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Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Feb. 02, 2013	Mar. 21, 2013	Jul. 27, 2012
Document Type	10-K
Amendment Flag	false
Document Period End Date	Feb. 02, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Trading Symbol	MRVL
Entity Registrant Name	MARVELL TECHNOLOGY GROUP LTD
Entity Central Index Key	0001058057
Current Fiscal Year End Date	--02-02
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		501,700,000
Entity Public Float			$ 3,893,000,000

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Current assets:
Cash and cash equivalents	$ 751,953	$ 784,902
Short-term investments	1,167,037	1,461,596
Accounts receivable, net of provision for sales returns and allowances of $7,921 and $2,663 in fiscal 2013 and 2012, respectively	330,238	407,263
Inventories	250,420	354,119
Prepaid expenses and other current assets	77,282	60,412
Deferred income taxes	8,416	10,669
Total current assets	2,585,346	3,078,961
Property and equipment, net	387,027	383,801
Long-term investments	16,769	23,215
Goodwill	2,032,138	2,031,991
Acquired intangible assets, net	89,655	141,505
Other non-current assets	150,829	108,146
Total assets	5,261,764	5,767,619
Current liabilities:
Accounts payable	286,552	304,695
Accrued liabilities	143,991	87,655
Accrued employee compensation	117,195	137,245
Deferred income	60,150	59,959
Total current liabilities	607,888	589,554
Non-current income taxes payable	112,871	131,579
Other non-current liabilities	56,410	32,468
Total liabilities	777,169	753,601
Commitments and contingencies (Note 10)
Shareholders' equity:
Preferred stock, $0.002 par value; 8,000 shares authorized; no shares issued and outstanding
Common stock, $0.002 par value; 992,000 shares authorized; 508,338 and 583,671 shares issued and outstanding in fiscal 2013 and 2012, respectively	1,017	1,167
Additional paid-in capital	2,945,643	3,683,112
Accumulated other comprehensive income	1,148	776
Retained earnings	1,536,787	1,328,963
Total shareholders' equity	4,484,595	5,014,018
Total liabilities and shareholders' equity	$ 5,261,764	$ 5,767,619

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Accounts receivable, provision for sales return and allowances	$ 7,921	$ 2,663
Preferred stock, par value	$ 0.002	$ 0.002
Preferred stock, shares authorized	8,000	8,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.002	$ 0.002
Common stock, shares authorized	992,000	992,000
Common stock, shares issued	508,338	583,671
Common stock, shares outstanding	508,338	583,671

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Net revenue	$ 3,168,630	$ 3,393,040	$ 3,611,893
Operating costs and expenses:
Cost of goods sold	1,493,497	1,465,805	1,473,274
Research and development	1,057,445	1,013,678	897,578
Selling and marketing	161,817	159,434	155,481
General and administrative	108,514	100,620	104,830
Amortization and write-off of acquired intangible assets	52,700	49,357	79,538
Total operating costs and expenses	2,873,973	2,788,894	2,710,701
Operating income	294,657	604,146	901,192
Interest and other income, net	15,533	14,913	9,270
Income before income taxes, net	310,190	619,059	910,462
Provision for income taxes	3,605	3,968	6,333
Net income	$ 306,585	$ 615,091	$ 904,129
Net income per share:
Basic	$ 0.55	$ 1.01	$ 1.39
Diluted	$ 0.54	$ 0.99	$ 1.34
Weighted average shares:
Basic	555,310	607,857	648,347
Diluted	563,123	623,268	676,878
Cash dividends declared per share	$ 0.18

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Net income	$ 306,585	$ 615,091	$ 904,129
Available-for-sale securities:
Change in unrealized gain on marketable securities	2,141	2,087	3,007
Less: Reclassification adjustments for net realized gains on marketable securities included in net income	(3,101)	(1,889)	(590)
Change in unrealized loss on auction rate securities	(1,396)	339	695
Derivative financial instruments:
Change in unrealized gain (loss) on cash flow hedges	233	757	(8)
Less: Reclassification adjustments for net realized loss (gain) on cash flow hedges included in net income	2,495	(1,605)	(1,126)
Other		(5)	(1)
Other comprehensive income (loss), net	372	(316)	1,977
Comprehensive income	$ 306,957	$ 614,775	$ 906,106

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Income (Deficit)
Beginning Balance (in shares) at Jan. 30, 2010		638,341
Beginning Balance at Jan. 30, 2010	$ 4,417,979	$ 1,277	$ 4,607,844	$ (885)	$ (190,257)
Shares issued pursuant to stock options and awards, net (in shares)	13,959	15,077
Shares issued pursuant to stock options and awards, net	$ 108,615	$ 30	108,585
Issuance of common stock under the employee stock purchase plan (in shares)		10,885
Issuance of common stock under the employee stock purchase plan	57,338	$ 22	57,316
Share-based compensation	118,857		118,857
Tax (deficiency) benefit from employee stock transactions	460		460
Repurchase of common stock (In Shares)		(4,931)
Repurchase of common stock	(87,486)	$ (10)	(87,476)
Net income	904,129				904,129
Other comprehensive income	1,977			1,977
Ending Balance (in shares) at Jan. 29, 2011		659,372
Ending Balance at Jan. 29, 2011	$ 5,521,869	$ 1,319	4,805,586	1,092	713,872
Shares issued pursuant to stock options and awards, net (in shares)	5,681	7,210
Shares issued pursuant to stock options and awards, net	$ 37,003	$ 14	36,989
Issuance of common stock under the employee stock purchase plan (in shares)		4,875
Issuance of common stock under the employee stock purchase plan	60,854	$ 10	60,844
Share-based compensation	120,390		120,390
Tax (deficiency) benefit from employee stock transactions	3		3
Repurchase of common stock (In Shares)		(87,786)
Repurchase of common stock	(1,340,876)	$ (176)	(1,340,700)
Net income	615,091				615,091
Other comprehensive income	(316)			(316)
Ending Balance (in shares) at Jan. 28, 2012		583,671
Ending Balance at Jan. 28, 2012	$ 5,014,018	$ 1,167	3,683,112	776	1,328,963
Shares issued pursuant to stock options and awards, net (in shares)	5,977	8,090
Shares issued pursuant to stock options and awards, net	$ 28,411	$ 17	28,394
Issuance of common stock under the employee stock purchase plan (in shares)		7,578
Issuance of common stock under the employee stock purchase plan	66,426	$ 15	66,411
Share-based compensation	126,683		126,683
Tax (deficiency) benefit from employee stock transactions	(52)		(52)
Repurchase of common stock (In Shares)		(91,001)
Repurchase of common stock	(959,087)	$ (182)	(958,905)
Cash dividends declared and paid (cumulatively $0.18 per share)	(98,761)				(98,761)
Net income	306,585				306,585
Other comprehensive income	372			372
Ending Balance (in shares) at Feb. 02, 2013		508,338
Ending Balance at Feb. 02, 2013	$ 4,484,595	$ 1,017	$ 2,945,643	$ 1,148	$ 1,536,787

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)	12 Months Ended
	Feb. 02, 2013 $ / shares
Cash dividends declared and paid	$ 0.18

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Cash flows from operating activities:
Net income	$ 306,585	$ 615,091	$ 904,129
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	91,028	88,454	93,190
Share-based compensation	127,280	119,863	118,405
Amortization and write-off of acquired intangible assets	52,700	49,357	79,538
Facility impairment			1,140
Other expense, net	7,392	15,190	7,581
Excess tax benefits from stock-based compensation	(58)	(164)	(899)
Deferred income tax	7,026	(3,245)	4,113
Changes in assets and liabilities, net of assets acquired and liabilities assumed in acquisitions:
Accounts receivable	77,025	54,550	(102,610)
Inventories	103,102	(101,109)	(3,655)
Prepaid expenses and other assets	(6,894)	30,736	50,236
Accounts payable	(24,304)	(47,095)	42,464
Accrued liabilities and other non-current liabilities	8,014	(21,614)	(38,059)
Accrued employee compensation	(20,050)	(12,565)	21,210
Deferred income	191	(16,202)	16,765
Net cash provided by operating activities	729,037	771,247	1,193,548
Cash flows from investing activities:
Purchases of available-for-sale securities	(1,543,902)	(1,851,696)	(1,262,767)
Purchases of strategic investments	(8,750)	(4,003)	(1,750)
Sales and maturities of available-for-sale securities	1,835,655	1,462,164	868,759
Cash paid for acquisitions, net	(1,000)	(93,916)	(29,446)
Proceeds from sale of equity investments			9,192
Purchases of technology licenses	(35,002)	(13,823)	(23,144)
Purchases of property and equipment	(68,186)	(88,779)	(90,173)
Net cash provided by (used) in investing activities	178,815	(590,053)	(529,329)
Cash flows from financing activities:
Repurchase of common stock	(936,935)	(1,340,876)	(87,486)
Proceeds from employee stock plans	104,936	106,039	175,359
Minimum tax withholding paid on behalf of employees for net share settlement	(10,099)	(8,182)	(9,405)
Dividend payments to shareholders	(98,761)
Principal payments on capital lease		(511)	(1,940)
Excess tax benefits from stock-based compensation	58	164	899
Net cash (used in) provided by financing activities	(940,801)	(1,243,366)	77,427
Net (decrease) increase in cash and cash equivalents	(32,949)	(1,062,172)	741,646
Cash and cash equivalents at beginning of the year	784,902	1,847,074	1,105,428
Cash and cash equivalents at end of the year	751,953	784,902	1,847,074
Supplemental cash flow information:
Cash paid for interest	563	722	144
Cash paid for income taxes, net	16,813	$ 14,096	$ 12,239
Non-Cash Investing and Financing Activities:
Purchase of intellectual property under license obligations	$ 42,692

The Company and its Significant Accounting Policies

12 Months Ended

Feb. 02, 2013

The Company and its Significant Accounting Policies

Note 1 — The Company and its Significant Accounting Policies:

The Company

Marvell Technology Group Ltd., a Bermuda company (the “Company”), is a leading global semiconductor provider of high-performance application specific standard products. The Company’s core strength of expertise is the development of complex System-on-a-Chip devices leveraging its extensive technology portfolio of intellectual property in the areas of analog, mixed-signal, digital signal processing, and embedded and stand alone ARM-based microprocessor integrated circuits. The Company develops platforms that it defines as integrated hardware along with software that incorporates digital computing technologies designed and configured to provide an optimized computing solution compared to individual components. The Company’s broad product portfolio includes devices for data storage, enterprise-class Ethernet data switching, Ethernet physical-layer transceivers, mobile handsets and other consumer electronics, Ethernet-based wireless networking, personal area networking, Ethernet-based PC connectivity, control plane communications controllers, video-image processing and power management solutions.

Basis of Presentation

The Company’s fiscal year is the 52- or 53-week period ending on the Saturday closest to January 31. In a 52-week year, each fiscal quarter consists of 13 weeks. The additional week in a 53-week year is added to the fourth quarter, making such quarter consist of 14 weeks. Fiscal 2013 had a 53-week period. Fiscal 2012 and 2011 each had a 52-week period.

Certain reclassifications have been made to prior period balances in order to conform to the current period’s presentation.

Use of Estimates

The preparation of consolidated financial statements in conformity with generally accepted accounting principles in the United States (“GAAP”) requires management to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an on-going basis, the Company evaluates its estimates, including those related to performance-based compensation, revenue recognition, provisions for sales returns and allowances, inventory excess and obsolescence, investment fair values, goodwill and other intangible assets, income taxes, litigation and other contingencies. In addition, the Company uses assumptions when employing the Monte Carlo simulation and Black-Scholes valuation models to calculate the fair value of stock-based awards that are granted. Actual results could differ from these estimates, and such differences could affect the results of operations reported in future periods.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated. The functional currency of the Company and its subsidiaries is the U.S. dollar.

Cash and Cash Equivalents

The Company considers all highly liquid investments with a maturity of three months or less from the date of purchase to be cash equivalents. Cash and cash equivalents consist of cash on deposit with banks, time deposits, federal agency notes, commercial paper and money market funds.

Investments

The Company’s marketable investments are classified as available-for-sale and are reported at fair value. The Company determines any realized gains or losses on the sale of available-for-sale securities on a specific identification method, and such gains and losses are recorded as a component of interest and other income, net. Unrealized gains and losses of the available-for-sale securities are excluded from earnings and reported as a component of accumulated other comprehensive income. The Company assesses whether an other-than-temporary impairment loss on its available-for-sale securities has occurred due to declines in fair value or other market conditions. Declines in fair value that are considered other-than-temporary are recorded as an impairment of investments in interest and other income, net within the consolidated statements of operations.

In general, investments with original maturities of greater than 90 days and remaining maturities of less than one year are classified as short-term investments. Investments with maturities beyond one year may also be classified as short-term based on their highly liquid nature and because such investments represent the investment of cash that is available for current operations.

The Company also has equity investments in privately-held companies. If the Company has the ability to exercise significant influence over the investee, but not control, or if the investee is a partnership type investment, the Company accounts for the investments under the equity method. If the Company does not have the ability to exercise significant influence over the operations of the investee, the Company accounts for the investment under the cost method. Investments in privately-held companies are included in other non-current assets.

Impairment of Investments

If a debt security’s market value is below amortized cost and the Company either intends to sell the security or it is more likely than not that the Company will be required to sell the security before its anticipated recovery, the Company records an other-than-temporary impairment charge to interest and other income, net within the consolidated statements of operations.

Investments in privately-held companies are subject to a periodic impairment review. Investments are considered impaired when the fair value is below the investment’s cost basis and the decline in value is judged to be other-than-temporary. This assessment is based on a qualitative and quantitative analysis, including, but not limited to, the investee’s revenue and earnings trends, available cash and liquidity, and the status of the investee’s products and the related market for such products.

Derivative Financial Instruments

The Company accounts for its derivative instruments as either assets or liabilities and carries them at fair value. For derivative instruments that hedge the exposure to variability in expected future cash flows and are designated as cash flow hedges, the effective portion of the gain or loss on the derivative instrument is reported as a component of accumulated other comprehensive income in shareholders’ equity and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. The ineffective portion of the gain or loss on the derivative instrument is recognized in current earnings. To receive hedge accounting treatment, cash flow hedges must be highly effective in offsetting changes to expected future cash flows on hedged transactions. Derivatives that are not designated as hedges must be adjusted to fair value through earnings.

Concentration of Credit Risk and Significant Customers

Financial instruments that potentially subject the Company to a significant concentration of credit risk consist principally of cash equivalents, short-term investments and accounts receivable. Cash, cash equivalents and short-term investments balances are maintained with high quality financial institutions, the composition and maturities of which are regularly monitored by management. The Company believes that the concentration of credit risk in its trade receivables, which consists of a customer base located primarily in the Asia Pacific Region, is substantially mitigated by the Company’s credit evaluation process, relatively short collection terms and the high level of credit worthiness of its customers. The Company performs ongoing credit evaluations of its customers’ financial conditions and limits the amount of credit extended when deemed necessary based upon payment history and the customer’s current credit worthiness, but generally requires no collateral. The Company regularly reviews the allowance for bad debt and doubtful accounts by considering factors such as historical experience, credit quality, age of the accounts receivable balances and current economic conditions that may affect a customer’s ability to pay.

The allowance for doubtful accounts at February 2, 2013 and January 28, 2012 was $1.0 million and $1.3 million, respectively. Please see “Note 1 — The Company and its Significant Accounting Policies – Revenue Recognition” for additional information on sales returns and allowances.

The following table sets forth sales to end customers comprising 10% or more of the Company’s net revenue for the periods indicated:


	Year Ended
Customer	February 2, 2013			January 28, 2012			January 29, 2011
Western Digital		24	%		19	%		21	%
Toshiba		10	%			*			*
Seagate		10	%			*			*
Research in Motion			*			*		14	%

*	Less than 10% of net revenue

In fiscal 2013, Western Digital acquired Hitachi’s HDD unit and in fiscal 2012, Seagate acquired the HDD operations of Samsung.

The Company’s accounts receivable were concentrated with two customers at February 2, 2013, representing 19% and 15% of gross accounts receivable, respectively, and were concentrated with three customers at January 28, 2012, representing 15%, 12% and 11% of gross accounts receivable, respectively.

In each of fiscal 2013 and 2012, one distributor accounted for more than 10% of the Company’s net revenue, and no distributor accounted for more than 10% of the Company’s net revenue in fiscal 2011. The Company continuously monitors the creditworthiness of its distributors and believes these distributors’ sales to diverse end customers and to diverse geographies further serve to mitigate the Company’s exposure to credit risk.

Inventories

Inventory is stated at the lower of cost or market, cost being determined under the first-in, first-out method. The Company records inventory excess and obsolescence provisions for estimated obsolete or unsellable inventory equal to the difference between the cost of inventory and estimated net realizable value based upon assumptions about future demand and market conditions. If actual future demand for the Company’s products is less than currently forecasted, additional inventory provisions may be required. Once a provision is recorded, it is maintained until the product to which it relates to is sold or otherwise disposed of. Shipping and handling costs are classified as a component of cost of goods sold in the consolidated statements of operations. In fiscal 2012, the Company recorded $4.4 million of step-up fair market value adjustments to inventory acquired in acquisitions, based on the estimated selling price less reasonable profit allowance for the selling effort.

Property and Equipment, Net

Property and equipment, net, are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, which ranges from three to seven years for machinery and equipment, computer software, and furniture and fixtures. Buildings are depreciated over an estimated useful life of 30 years and building improvements are depreciated over estimated useful lives of 15 years.

Goodwill

Goodwill is recorded when the consideration paid for a business acquisition exceeds the fair value of net tangible and intangible assets acquired. Goodwill is measured and tested for impairment annually or more frequently if the Company believes indicators of impairment exist. First, the Company assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If the company concludes that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, then a two-step quantitative impairment test is performed. The first step requires comparing the fair value of the reporting unit to its net book value, including goodwill. As the Company has only one reporting unit, the fair value of the reporting unit is determined by taking the market capitalization of the Company as determined through quoted market prices and adjusted for control premiums and other relevant factors. A potential impairment exists if the fair value of the reporting unit is lower than its net book value. The second step of the process is only performed if a potential impairment exists, and it involves determining the difference between the fair value of the reporting unit’s net assets other than goodwill and the fair value of the reporting unit. If the difference is less than the net book value of goodwill, impairment exists and is recorded. In the event that the Company determines that the value of goodwill has become impaired, the Company will record an accounting charge for the amount of impairment during the fiscal quarter in which the determination is made. The Company has not been required to perform this second step of the process because the fair value of the reporting unit has sufficiently exceeded its net book value at every measurement date.

Long-Lived Assets and Intangible Assets

Long-lived assets include property and equipment, technology licenses and intangible assets. Whenever events or changes in circumstances indicate that the carrying amount of long-lived assets may not be recoverable, the Company estimates the future cash flows, undiscounted and without interest charges, expected to result from the use of those assets and their eventual disposition. If the sum of the expected future cash flows is less than the carrying amount of those assets, the Company recognizes an impairment loss based on the excess of the carrying amount over the fair value of the assets. Please see “Note 7 — Goodwill and Acquired Intangible Assets” for further details regarding impairment of acquisition-related identified intangible assets.

Acquisition-related identified intangible assets are amortized on a straight-line basis over their estimated economic lives of 4 to 7 years for purchased technology, 5 to 8 years for core technology, 5 to 7 years for customer intangibles, and 5 years for trade name. In-process research and development (“IPR&D”) is not amortized until the completion of the related development.

Foreign Currency Transactions

The functional currency of all of the Company’s non-U.S. operations is the U.S. dollar. Monetary accounts maintained in currencies other than the U.S. dollar are re-measured using the foreign exchange rate at the balance sheet date. Operational accounts and nonmonetary balance sheet accounts are measured and recorded at the rate in effect at the date of the transaction. The effects of foreign currency re-measurement are reported in current operations.

Revenue Recognition

The Company recognizes revenue when there is persuasive evidence of an arrangement, delivery has occurred, the fee is fixed or determinable, and collection is reasonably assured.

Product revenue is generally recognized upon shipment of product to customers, net of accruals for estimated sales returns and rebates. However, some of the Company’s sales are made through distributors under agreements allowing for price protection, shipped from stock pricing adjustment rights, and limited rights of stock rotation on products unsold by the distributors. Although title passes to the distributor upon shipment terms and payment by the Company’s distributors is not contingent on resale of the product, product revenue on sales made through distributors with price protection, shipped from stock pricing adjustment rights and stock rotation rights are deferred until the distributors sell the product to end customers. Deferred revenue less the related cost of the inventories is reported as deferred income. The Company does not believe that there is any significant exposure related to impairment of deferred cost of sales, as its historical returns have been minimal and inventory turnover for its distributors generally ranges from 60 to 90 days. The Company’s sales to direct customers are made primarily pursuant to standard purchase orders for delivery of products.

A portion of the Company’s net revenue is derived from sales through third party logistics providers, who maintain warehouses in close proximity to the customer’s facilities. Revenue from sales through these third party logistics providers is not recognized until the product is pulled from stock by the end customer.

The provision for estimated sales returns on product sales is recorded in the same period the related revenues are recorded. These estimates are based on historical returns, analysis of credit memo data and other known factors. Actual returns could differ from these estimates. The Company accounts for rebates by recording reductions to revenue for rebates in the same period that the related revenue is recorded. The amount of these reductions is based upon the terms agreed to with the customer.

Advertising Expense

Advertising costs are expensed as incurred.

Stock-Based Compensation

Stock-based compensation is measured at the grant date, based on the fair value of the award, and is recognized as expense over the requisite service period. The Company amortizes stock-based compensation expense for time-based and market-based awards under the straight-line attribution method over the vesting period, which is generally four years for annual grants to employees and five years for new hire grants. Performance-based awards are amortized using the accelerated method.

The Company estimates the fair value of time-based stock option awards on the date of grant using the Black Scholes option-pricing model. The fair value of market-based stock option awards is estimated on the date of grant using a Monte Carlo simulation model. The value of the portion of the awards that is ultimately expected to vest is recognized as expense over the requisite service periods. The Black Scholes and Monte Carlo models incorporate various highly subjective assumptions including expected term of awards, expected future stock price volatility and expected forfeiture rates.

In developing estimates used to calculate assumptions, the Company establishes the expected term for employee stock options, as well as expected forfeiture rates, based on the historical settlement experience and after giving consideration to vesting schedules. Assumptions for stock option exercises and pre-vesting terminations of stock options were stratified by employee groups with sufficiently distinct behavior patterns. Expected volatility was developed based on equally weighted combination of historical stock price volatility and implied volatility derived from traded options on the Company’s stock in the marketplace. The expected dividend yield is calculated by dividing annualized dividend payments by the closing stock price on the grant date of the option.

Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from initial estimates. Stock-based compensation expense is recorded net of estimated forfeitures such that expense is recorded only for those stock-based awards that are expected to vest. Previously recognized expense is reversed for the portion of awards forfeited prior to vesting as and when forfeitures occurred.

The fair value of each restricted stock unit is estimated based on the market price of the Company’s common shares on the date of grant less the expected dividend yield.

Comprehensive Income

Comprehensive income is comprised of net income and unrealized gains and losses on available-for-sale securities and foreign exchange contracts. Accumulated other comprehensive income, as presented on the accompanying balance sheets, consists of net unrealized gains and losses on available-for-sale securities and foreign exchange contracts, net of tax.

Accounting for Income Taxes

The Company recognizes income taxes using an asset and liability approach. This approach requires the recognition of taxes payable or refundable for the current year and deferred tax liabilities and assets for the future tax consequences of events that have been recognized in the Company’s consolidated financial statements or tax returns. The measurement of current and deferred taxes is based on provisions of the enacted tax law and the effects of future changes in tax laws or rates are not anticipated.

Evaluating the need for an amount of a valuation allowance for deferred tax assets often requires judgment and analysis of all the positive and negative evidence available to determine whether all or some portion of the deferred tax assets will not be realized. A valuation allowance must be established for deferred tax assets when it is more likely than not that they will not be realized. Based on the available evidence and judgment, the Company has determined that it is more likely than not that U.S. research credits and certain acquired net operating losses will not be realized and therefore the Company has provided a full valuation allowance against these credits. If there is a change in the Company’s ability to realize its deferred tax assets, then the Company’s tax provision may decrease in the period in which it determines that realization is more likely than not.

As a multinational corporation, the Company conducts its business in many countries and is subject to taxation in many jurisdictions. The taxation of the Company’s business is subject to the application of various and sometimes conflicting tax laws and regulations as well as multinational tax conventions. The Company’s effective tax rate is highly dependent upon the geographic distribution of its worldwide earnings or losses, the tax regulations and tax holidays in each geographic region, the availability of tax credits and carryforwards, and the effectiveness of its tax planning strategies. The application of tax laws and regulations is subject to legal and factual interpretation, judgment and uncertainty. Tax laws themselves are subject to change as a result of changes in fiscal policy, changes in legislation, and the evolution of regulations and court rulings. Consequently, taxing authorities may impose tax assessments or judgments against the Company that could materially impact its tax liability and/or its effective income tax rate.

The Company is subject to income tax audits by the respective tax authorities in all of the jurisdictions in which the Company operates. The Company recognizes the effect of income tax positions only if these positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is more than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest and penalties related to unrecognized tax benefits in income tax expense. The calculation of the Company’s tax liabilities involves the inherent uncertainty associated with the application of GAAP and complex tax laws. The Company believes it has adequately provided for in its financial statements additional taxes that it estimates may be required to be paid as a result of such examinations. While the Company believes that it has adequately provided for all tax positions, amounts asserted by tax authorities could be greater or less than the Company’s accrued position. These tax liabilities, including the interest and penalties, are released pursuant to a settlement with tax authorities, completion of audit or expiration of various statutes of limitation. The material jurisdictions in which the Company may be subject to potential examination by tax authorities throughout the world include China, Israel, Singapore, Switzerland and the United States.

Warranty

The Company’s products are generally subject to warranty, which provides for the estimated future costs of repair, replacement or customer accommodation upon shipment of the product. The Company’s products carry a standard 90 day warranty, with certain exceptions in which the warranty period can extend to more than one year based on contractual agreements. The warranty accrual is primarily estimated based on historical claims compared to historical revenues and assumes that the Company will have to replace products subject to a claim. From time to time, the Company becomes aware of specific warranty situations, and it records specific accruals to cover these exposures.

Accounting Pronouncements Recently Adopted

The Company adopted the new accounting standard that provides additional guidance on fair value measurements and related disclosures at the beginning of fiscal 2013. This guidance clarifies the application of existing guidance on fair value measurement for non-financial assets and requires the disclosure of quantitative information about the unobservable inputs used in a fair value measurement. The adoption of this guidance had no impact on the Company’s financial statements.

The Company also adopted the new accounting standard that permits an entity the option to present the total of comprehensive income, the components of net income and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements at the beginning of fiscal 2013. This amended guidance eliminates the option to present the components of other comprehensive income as part of the statement of changes in shareholders’ equity. The Company has separately presented the statements of comprehensive income as part of its audited consolidated financial statements.

The Company also adopted the new accounting standard that amends the previous guidance regarding the testing of goodwill for impairment at the beginning of fiscal 2013. This amended guidance allows an entity to first assess qualitative factors to determine whether it is necessary to perform the two-step quantitative goodwill impairment test. An entity no longer is required to calculate the fair value of a reporting unit unless the entity determines, based on a qualitative assessment, that it is more likely than not that its fair value is less than its carrying amount. The adoption of this guidance had no impact on the Company’s financial statements.

Accounting Pronouncements Not Yet Effective for Fiscal 2013

In July 2012, the Financial Accounting Standards Board (“FASB”) issued an amendment to its guidance regarding the testing of indefinite-lived intangible assets for impairment. This amended guidance allows an entity first to assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired as a basis for determining whether it is necessary to perform the quantitative impairment test in accordance with the guidance on the impairment of intangible assets other than goodwill. This amended guidance is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. The adoption of this guidance is not expected to have an impact on the Company’s financial statements.

In February 2013, the FASB issued an amendment to its guidance regarding the reporting of amounts reclassified out of accumulated other comprehensive income. The amendments require an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either in the financial statements or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income. This amended guidance is effective prospectively for annual periods beginning after December 15, 2012 and interim periods within those years. The adoption of this guidance is not expected to have an impact on the Company’s financial statements.

Business Combinations

12 Months Ended

Feb. 02, 2013

Business Combinations

Note 2 — Business Combinations:

Acquisitions in fiscal 2013

There were no significant acquisitions individually or in aggregate during fiscal 2013.

Acquisitions in prior years

In December 2011, the Company acquired Xelerated AB (“Xelerated”), a company which specializes in network processing and programmable Ethernet switching solutions. The total purchase price was $75.2 million in cash, net of cash acquired. In addition to leveraging the existing acquired business and customer base, the objective of the acquisition was to expand the Company’s technology portfolio and enable more comprehensive integrated solutions for the networking market. The goodwill of $22.3 million was attributed to synergies specific to the Company in delivering these integrated solutions with its product portfolio, as well as the assembled workforce.

The terms of the Xelerated acquisition included contingent consideration of up to $5.0 million, based on specific revenue targets for the acquired business during calendar year 2011. Based on the actual results through the date of acquisition, the Company assessed there was no possibility of any of the earnout being paid, therefore the Company assigned no value to the contingent consideration. After the end of calendar year 2011, the Company concluded that the earnout requirements were not met.

The purchase price of Xelerated was allocated as follows (in thousands):


Accounts receivable	$	2,407
Inventory		6,481
Prepaid and other current assets		111
Property and equipment		441

Tangible assets acquired		9,440
Goodwill		22,324
Intangible assets		51,800

Total assets acquired		83,564
Accounts payable		(256	)
Accrued liabilities		(7,152	)
Deferred tax liability		(1,000	)

Net assets acquired	$	75,156

Costs that were recognized separately from the acquisition were not significant and were expensed in fiscal 2012. In addition to the consideration for the acquisition, the agreement included retention bonuses totaling $4.3 million in cash over the two years following the close of the acquisition. These amounts are being expensed as compensation expense over the course of the retention period, as payment is contingent upon future employment.

The acquired intangible assets from Xelerated were recognized as follows based upon their fair value as of the acquisition date (in thousands):


	Fair value		Estimated useful lives
Intangible assets:
Purchased technology	$	25,800		6 years
Customer intangible		24,700		5 years
Trade name		1,300		5 years

Total	$	51,800

The value of the purchased technology and the trade name of $25.8 million and $1.3 million, respectively, were determined based on the relief from royalty method, and the value of the customer intangible was determined using discounted cash flows.

In April 2011, the Company acquired the physical-layer transceivers business of a company, which specializes in the design of networking devices. Under the acquisition method of accounting, the total purchase price was determined to be $16.3 million and was allocated to tangible assets for $1.1 million, intangible assets for $13.6 million and goodwill for $1.6 million.

In December 2010, the Company completed the acquisition of a mobile software consulting firm specializing in user interface application software. The purchase consideration was determined to be $11.8 million and was allocated to intangible assets based on their fair values as of the date of the completion of the purchase under the acquisition method of accounting. The Company recorded the purchase price allocation to amortizable intangible assets of $7.5 million and goodwill of $4.3 million. Additional consideration of $9.3 million, which will be paid to employees, is contingent on continuing employment and therefore is being expensed as compensation over the course of the retention period.

In July 2010, the Company purchased the assets of a company engaged in the development of powerline communications for home networking and broadband over powerline applications. Under the acquisition method of accounting, the total purchase price of $20.7 million was allocated to tangible and intangible assets based on their fair values as of the date of the completion of the purchase. The Company recorded the purchase price allocation to tangible assets of $0.3 million, amortizable intangible assets of $7.8 million, IPR&D of $9.7 million and goodwill of $2.9 million.

The completed acquisitions in fiscal 2012 and 2011 both individually and in the aggregate were not significant to the Company’s consolidated statements of operations. The goodwill acquired is not deductible for tax purposes.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6996-128479

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1383-128463

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 88-16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph F4
-Subparagraph e
-Appendix F

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51, 52
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 67-73
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Investments

12 Months Ended

Feb. 02, 2013

Investments

Note 3 — Investments:

The following tables summarize the Company’s investments (in thousands):


	As of February 2, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Short-term investments:
Available-for-sale:
Corporate debt securities	$	577,120	$	2,886	$	(382	)	$	579,624
Asset backed securities		76,629		50		(64	)		76,615
Foreign government		4,320		—		(1	)		4,319
U.S. federal and state debt securities		318,226		258		(5	)		318,479
Time deposits		188,000		—		—			188,000

Total short-term investments		1,164,295		3,194		(452	)		1,167,037
Long-term investments:
Available-for-sale:
Auction rate securities		19,450		—		(2,681	)		16,769

Total long-term investments		19,450		—		(2,681	)		16,769

Total investments	$	1,183,745	$	3,194	$	(3,133	)	$	1,183,806


	As of January 28, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Short-term investments:
Available-for-sale:
Corporate debt securities	$	685,563	$	3,081	$	(799	)	$	687,845
Foreign government		2,033		3		—			2,036
U.S. federal and state debt securities		770,298		1,437		(20	)		771,715

Total short-term investments		1,457,894		4,521		(819	)		1,461,596
Long-term investments:
Available-for-sale:
Auction rate securities		24,500		—		(1,285	)		23,215

Total long-term investments		24,500		—		(1,285	)		23,215

Total investments	$	1,482,394	$	4,521	$	(2,104	)	$	1,484,811

The investment in foreign government debt as of February 2, 2013 and January 28, 2012 was in Canadian province debt. As of February 2, 2013, the Company’s investment portfolio included auction rate securities with an aggregate par value of $19.5 million. To estimate the fair value of the auction rate securities, the Company uses a discounted cash flow model based on estimated timing and amount of future interest and principal payments. In developing the cash flow model, the Company considers the credit quality and liquidity of the underlying securities and related issuer, the collateralization of underlying security investments and other considerations. The fair value of the auction rate securities as of February 2, 2013 was $2.7 million less than the par value and was recorded in long-term investments. Based on the Company’s balance of approximately $1.9 billion in cash, cash equivalents and short-term investments, and the fact that the Company continues to generate positive cash flow from operations on a quarterly basis, the Company does not anticipate having to sell these securities below par value and does not have the intent to sell these auction rate securities until recovery. Since the Company considers the impairment to be temporary, the Company recorded the unrealized loss to accumulated other comprehensive income, a component of shareholders’ equity.

The gross realized gains on sales of available-for-sale securities for fiscal 2013, 2012 and 2011 were $3.6 million, $2.4 million and $0.6 million, respectively. The gross realized losses on sales of available-for-sale securities for fiscal 2013, 2012 and 2011 were $0.3 million, $1.0 million and $0.2 million, respectively.

The contractual maturities of available-for-sale securities are presented in the following table (in thousands):


	February 2, 2013				January 28, 2012
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year or less	$	519,006	$	519,537	$	641,433	$	642,317
Due between one and five years		627,769		629,991		816,461		819,279
Due over five years		36,970		34,278		24,500		23,215

	$	1,183,745	$	1,183,806	$	1,482,394	$	1,484,811

For individual securities that have been in a continuous unrealized loss position, the fair value and gross unrealized loss for these securities aggregated by investment category and length of time in an unrealized position are presented in the following tables (in thousands):


	February 2, 2013
	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Corporate debt securities	$	141,915	$	(382	)	$	—	$	—		$	141,915	$	(382	)
U.S. federal and state debt securities		14,677		(5	)		—		—			14,677		(5	)
Auction rate securities		—		—			16,769		(2,681	)		16,769		(2,681	)
Asset backed securities		43,882		(64	)		—		—			43,882		(64	)
Foreign government		4,319		(1	)		—		—			4,319		(1	)

Total securities	$	204,793	$	(452	)	$	16,769	$	(2,681	)	$	221,562	$	(3,133	)


	January 28, 2012
	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Corporate debt securities	$	146,963	$	(799	)	$	—	$	—		$	146,963	$	(799	)
U.S. federal and state debt securities		107,603		(20	)		—		—			107,603		(20	)
Auction rate securities		—		—			23,215		(1,285	)		23,215		(1,285	)

Total securities	$	254,566	$	(819	)	$	23,215	$	(1,285	)	$	277,781	$	(2,104	)

Supplemental Financial Information

12 Months Ended

Feb. 02, 2013

Supplemental Financial Information

Note 4 — Supplemental Financial Information (in thousands):


	February 2, 2013		January 28, 2012
Cash and cash equivalents
Cash	$	583,527	$	503,095
Cash equivalents:
Corporate debt securities		—		12,500
Time deposits		119,874		205,060
Money market mutual fund		21,523		64,247
U.S. federal and state debt securities		27,029		—

Total cash and cash equivalents	$	751,953	$	784,902


	February 2, 2013		January 28, 2012
Inventories:
Work-in-process	$	140,805	$	190,779
Finished goods		109,615		163,340

Inventories	$	250,420	$	354,119


	February 3, 2013			January 28, 2012
Property and equipment, net:
Machinery and equipment	$	532,420		$	489,481
Buildings		144,320			144,320
Computer software		89,548			81,852
Land		69,246			69,246
Building improvements		49,516			42,083
Leasehold improvements		46,205			37,237
Furniture and fixtures		25,301			24,726
Construction in progress		5,333			9,846

		961,889			898,791
Less: Accumulated depreciation and amortization		(574,862	)		(514,990	)

Property and equipment, net	$	387,027		$	383,801

The Company recorded depreciation expense of $70.7 million, $63.5 million and $72.2 million for fiscal 2013, 2012 and 2011, respectively.


	February 2, 2013		January 28, 2012
Other non-current assets:
Technology and other licenses	$	81,523	$	50,212
Deferred tax assets		26,291		31,064
Deposits		10,451		11,532
Investments in privately held companies		14,486		6,309
Deferred compensation		3,220		5,419
Other		14,858		3,610

Other non-current assets	$	150,829	$	108,146

Amortization of technology and other licenses was $20.3 million, $24.9 million, and $21.0 million in fiscal 2013, 2012 and 2011, respectively.


	February 2, 2013		January 28, 2012
Accrued liabilities:
Accrued rebates	$	51,712	$	24,420
Accrued share repurchases		22,152		—
Accrued legal expense		18,357		13,999
Accrued royalties		12,695		16,896
Technology license obligations		9,865		5,250
Other		29,210		27,090

Accrued liabilities	$	143,991	$	87,655

In connection with the Company’s repurchases of its common shares during fiscal 2013, approximately $22.2 million of the repurchases was made in the final 3 days of the fiscal year and is included in accrued share repurchases in the consolidated balance sheet. The repurchased shares were retired immediately after the repurchases were completed.


	February 2, 2013		January 28, 2012
Other non-current liabilities:
Technology license obligations	$	34,270	$	—
Long-term accrued employee compensation		6,205		10,059
Other		15,935		22,409

Other non-current liabilities	$	56,410	$	32,468


	February 2, 2013			January 28, 2012
Accumulated other comprehensive income:
Unrealized gain on marketable securities	$	2,742		$	3,702
Unrealized loss on auction rate securities		(2,681	)		(1,285	)
Unrealized gain (loss) on cash flow hedges		1,087			(1,641	)

Accumulated other comprehensive income	$	1,148		$	776

Net income per share

The Company reports both basic net income per share, which is based on the weighted average number of common shares outstanding, and diluted net income per share, which is based on the weighted average number of common shares outstanding and potentially dilutive common shares. The computations of basic and diluted net income per share are presented in the following table (in thousands, except per share amounts):


	Year Ended
	February 2, 2013		January 28, 2012		January 29, 2011
Numerator:
Net income:	$	306,585	$	615,091	$	904,129

Denominator:
Weighted average common shares outstanding:		555,310		607,857		648,347
Effect of dilutive securities:
Common share-based awards		7,813		15,411		28,531

Weighted average shares — diluted		563,123		623,268		676,878

Net income per share:
Basic	$	0.55	$	1.01	$	1.39
Diluted	$	0.54	$	0.99	$	1.34


	Year Ended
	February 2, 2013		January 28, 2012		January 29, 2011
Anti-dilutive potential common shares:
Weighted average shares outstanding from stock options		28,124		21,014		12,211

Weighted-average exercise price:	$	17.48	$	18.79	$	21.39

Anti-dilutive potential common shares for stock options are excluded from the calculation of diluted earnings per share for the periods reported above because their exercise price exceeded the average market price during the period. The anti-dilutive shares reported above also include shares from stock options that contain market conditions for vesting since the market value of the Company’s stock as of February 2, 2013, January 28, 2012 and January 29, 2011 was lower than the required market condition. There were 3.0 million anti-dilutive shares in each of fiscal 2013 and 2012 and 3.1 million anti-dilutive shares in fiscal 2011, from stock options that contain market conditions. See “Note 12 — Shareholders’ Equity” for additional details.

Derivative Financial Instruments

12 Months Ended

Feb. 02, 2013

Derivative Financial Instruments

Note 5 — Derivative Financial Instruments:

The Company manages some of its foreign currency exchange rate risk through the purchase of foreign currency exchange contracts that hedge against the short-term effect of currency fluctuations. The Company’s policy is to enter into foreign currency forward contracts with maturities generally less than 12 months that mitigate the effect of rate fluctuations on certain local currency denominated operating expenses. All derivative instruments are recorded at fair value in either prepaid expenses and other current assets or accrued liabilities. The Company reports cash flows from derivative instruments in cash flows from operating activities. The Company uses quoted prices to value its derivative instruments.

The notional amounts of outstanding forward contracts were as follows (in thousands):


	Buy Contracts
	February 2, 2013		January 28, 2012
Israeli shekel	$	38,249	$	42,637

Cash Flow Hedges. The Company designates and documents its foreign currency forward exchange contracts as cash flow hedges for certain operating expenses denominated in Israeli shekels. The Company evaluates and calculates the effectiveness of each hedge at least quarterly. The effective change is recorded in accumulated other comprehensive income and is subsequently reclassified to operating expense when the hedged expense is recognized. Ineffectiveness is recorded in interest and other income, net.

Other Foreign Currency Forward Contracts. The Company enters into foreign currency forward exchange contracts to hedge certain assets and liabilities denominated in various foreign currencies that it does not designate as hedges for accounting purposes. The maturities of these contracts are generally less than 12 months. Gains or losses arising from the remeasurement of these contracts to fair value each period are recorded in interest and other income, net.

The fair value of foreign currency exchange contracts was not significant as of any period presented.

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 22: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Fair Value Measurements

12 Months Ended

Feb. 02, 2013

Fair Value Measurements

Note 6 — Fair Value Measurements:

Fair value is an exit price representing the amount that would be received in the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability. As a basis for considering such assumptions, the accounting guidance establishes a three-tier value hierarchy, which prioritizes the inputs used in the valuation methodologies in measuring fair value:

Level 1 — Observable inputs that reflect quoted prices for identical assets or liabilities in active markets.

Level 2 — Include other inputs that are directly or indirectly observable in the marketplace.

Level 3 — Unobservable inputs that are supported by little or no market activity.

The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The Company’s Level 1 assets include institutional money-market funds that are classified as cash equivalents and marketable investments in U.S. federal and state debt securities, which are valued primarily using quoted market prices. The Company’s Level 2 assets and liabilities include its marketable investments in corporate debt securities, foreign government debt securities and asset back securities as the market inputs to value these instruments consist of market yields, reported trades and broker/dealer quotes, which are corroborated with observable market data. In addition, foreign currency exchange contracts are classified within Level 2 as the valuation inputs are based on quoted prices and market observable data of similar instruments. The Company’s Level 3 assets include its investments in auction rate securities, which are classified within Level 3 because there are currently no active markets for the auction rate securities and consequently the Company is unable to obtain independent valuations from market sources. Therefore, the auction rate securities are valued using a discounted cash flow model. Some of the inputs to the cash flow model are unobservable in the market. The total amount of assets measured using Level 3 valuation methodologies represented 0.3% of total assets as of February 2, 2013.

The tables below set forth, by level, the Company’s financial assets that were accounted for at fair value as of February 2, 2013 and January 28, 2012. The tables do not include assets and liabilities that are measured at historical cost or any basis other than fair value (in thousands):


	Level 1		Level 2		Level 3		Portion of Carrying Value Measured at Fair Value at February 2, 2013
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	21,523	$	—	$	—	$	21,523
U.S. federal and state debt securities		27,029		—		—		27,029
Time deposits		—		119,874		—		119,874
Short-term investments:
U.S. federal and state debt securities		318,479		—		—		318,479
Corporate debt securities		—		579,624		—		579,624
Foreign government		—		4,319		—		4,319
Asset backed securities		—		76,615		—		76,615
Time deposits		—		188,000		—		188,000
Prepaid expenses and other current assets:
Forward contracts		—		1,144		—		1,144
Long-term investments:
Auction rate securities		—		—		16,769		16,769
Other non-current assets:
Severance pay fund		—		1,977		—		1,977

Total assets	$	367,031	$	971,553	$	16,769	$	1,355,353


	Level 1		Level 2		Level 3		Portion of Carrying Value Measured at Fair Value at January 28, 2012
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	64,247	$	—	$	—	$	64,247
Corporate debt securities		—		12,500		—		12,500
Time deposits		—		205,060		—		205,060
Short-term investments:
U.S. federal and state debt securities		771,715		—		—		771,715
Corporate debt securities		—		687,845		—		687,845
Foreign government		—		2,036		—		2,036
Long-term investments:
Auction rate securities		—		—		23,215		23,215
Other non-current assets:
Severance pay fund		—		1,734		—		1,734

Total assets	$	835,962	$	909,175	$	23,215	$	1,768,352

Liabilities
Accrued liabilities:
Forward contracts	$	—	$	1,520	$	—	$	1,520

The following table summarizes the change in fair values for Level 3 assets for the year ended February 2, 2013 and January 28, 2012 (in thousands):


	Level 3
Changes in fair value during the year (pre-tax):
Beginning balance at January 29, 2011	$	26,226
Purchases		—
Sales, redemption and settlement		(3,350	)
Realized loss on sale		—
Unrealized gain included in accumulated other comprehensive income		339

Ending balance at January 28, 2012		23,215
Purchases		—
Sales, redemption and settlement		(5,050	)
Realized loss on sale		—
Unrealized loss included in accumulated other comprehensive income		(1,396	)

Ending balance at February 2, 2013	$	16,769

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13504-108611

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15B
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 17-22, 27, 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-Subparagraph a-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32, 33, 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 3, 10, 14, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Goodwill and Acquired Intangible Assets

12 Months Ended

Feb. 02, 2013

Goodwill and Acquired Intangible Assets

Note 7 — Goodwill and Acquired Intangible Assets:

Goodwill

During the second half of fiscal 2013, the Company experienced a decline in its stock price and a decrease in its outstanding shares from its share repurchase activity, resulting in a lower market capitalization. As a result, the Company performed an impairment assessment in each of its last two fiscal quarters. Since the Company has only one reporting unit, it determined the fair value of the reporting unit by taking the market capitalization of the Company as determined through quoted market prices and adjusted for control premiums and other relevant factors. As a result, the Company concluded there was no impairment of its goodwill in fiscal 2013. In fiscal 2012, the Company performed a similar annual assessment of goodwill impairment at the beginning of its fourth quarter of fiscal 2012 and as a result, concluded that there was no impairment.

The following table summarizes the activity related to the carrying value of goodwill (in thousands):


Balance at January 29, 2011	$	2,004,833
Additions due to business combinations		27,158

Balance at January 28, 2012		2,031,991
Additions due to business combinations		147

Balance at February 2, 2013	$	2,032,138

Acquired Intangible Assets

The carrying amounts of acquired intangible assets are as follows (in thousands):


			February 2, 2013							January 28, 2012
	Range of Useful Lives		Gross Carrying Amounts		Accumulated Amortization and Write-Offs			Net Carrying Amount		Gross Carrying Amounts		Accumulated Amortization and Write-Offs			Net Carrying Amount
Purchased technology		4 - 7 years	$	54,690	$	(18,552	)	$	36,138	$	103,490	$	(50,906	)	$	52,584
Core technology		5 - 8 years		138,650		(123,298	)		15,352		178,000		(142,932	)		35,068
Trade names		5 years		1,300		(308	)		992		1,500		(232	)		1,268
Customer intangibles		5 - 7 years		89,400		(61,927	)		27,473		89,900		(47,856	)		42,044
IPR&D		*		9,700		—			9,700		10,541		—			10,541

Total intangible assets, net			$	293,740	$	(204,085	)	$	89,655	$	383,431	$	(241,926	)	$	141,505

Upon completion of the project, the related IPR&D assets will be amortized over its estimated useful life. If any of the projects are abandoned or the forecast of the project indicates that the fair value is less than the carrying amount, the Company will be required to impair the related IPR&D asset.

Intangible assets, along with the related accumulated amortization, are removed for purposes of the above table at the end of the fiscal year they become fully amortized. In fiscal 2013, the Company wrote-off $0.8 million of IPR&D related to an abandoned project, which is included in amortization and write-off of acquired intangible assets in the consolidated statement of operations. There was no impairment of acquired intangible assets recorded in fiscal 2012 and 2011.

Based on the identified intangible assets recorded at February 2, 2013, the future amortization expense of identified intangibles excluding IPR&D for the next five fiscal years is as follows (in thousands):


Fiscal Year
2014	$	35,778
2015		14,942
2016		12,203
2017		11,018
2018		5,590
Thereafter		424

	$	79,955

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Restructuring

12 Months Ended

Feb. 02, 2013

Restructuring

Note 8 — Restructuring:

In fiscal 2013, the Company recorded a restructuring charge when the sublease of one of its previously vacated facilities was terminated. The Company also continued to make payments and incur on-going operating expenses related to previously vacated facilities during fiscal 2013 and 2012.

In fiscal 2012, the Company decided to vacate a leased facility it assumed in connection with the Xelerated acquisition immediately after the close of the transaction. As a result, the Company recorded an insignificant restructuring charge for the lease obligation. In fiscal 2012, the Company also completed the sale of its building that was previously classified as held for sale in fiscal 2011. The building was sold to an unrelated third party for $6.8 million, equal to its revised carrying value. In anticipation of the sale, the carrying value of this building was written down to its fair value and classified as held for sale within prepaid and other current assets in fiscal 2011. As a result, the Company recorded a charge of $1.1 million to research and development expenses in fiscal 2011.

The following table presents details of restructuring charges by functional line item (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012		January 29, 2011
Research and development	$	47		$	728	$	1,966
Selling and marketing		(3	)		8		—
General and administrative		1,213			1,120		1,217

	$	1,257		$	1,856	$	3,183

The following table sets forth a summary of the activity in the accrued liability for the years ended (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Restructuring liabilities, beginning of period	$	2,917		$	3,306		$	5,397
Facilities and related charges		553			1,619			3,420
Equipment and other related charges		—			237			94
Non-cash adjustment		10			(506	)		(1,272	)
Net cash payments		(1,329	)		(1,739	)		(4,002	)
Adjustments to previous assumptions		704			—			(331	)

Restructuring liabilities, end of period	$	2,855		$	2,917		$	3,306

The remaining restructuring liabilities will be paid out through fiscal 2018.

- Definition

The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

+ References + Details

Income Taxes

12 Months Ended

Feb. 02, 2013

Income Taxes

Note 9 — Income Taxes:

The U.S. and non-U.S. components of income before income taxes consist of the following (in thousands):


	Year Ended
	February 2, 2013		January 28, 2012		January 29, 2011
U.S. operations	$	34,900	$	28,039	$	22,647
Non-U.S. operations		275,290		591,020		887,815

	$	310,190	$	619,059	$	910,462

The provision for income taxes consists of the following (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Current income tax expense (benefit):
Federal	$	4,461		$	8,183		$	1,111
State		407			99			49
Foreign		(8,289	)		(1,069	)		3,282

Total current income tax expense (benefit)		(3,421	)		7,213			4,442

Deferred income tax expense (benefit):
Federal		6,306			(1,361	)		7,025
State		90			1,078			3,037
Foreign		630			(2,962	)		(8,171	)

Total deferred income tax expense (benefit)		7,026			(3,245	)		1,891

Total provision for income taxes	$	3,605		$	3,968		$	6,333

Deferred tax assets consist of the following (in thousands):


	February 2, 2013			January 28, 2012
Deferred tax assets:
Federal and California research and other tax credits	$	299,475		$	259,635
Reserves and accruals		27,830			32,328
Stock compensation		3,523			2,678
Net operating losses		20,553			21,813

Gross deferred tax assets		351,381			316,454
Valuation allowance		(299,449	)		(259,316	)

Total deferred tax assets		51,932			57,138
Total deferred tax liabilities		(17,225	)		(15,405	)

Net deferred tax assets	$	34,707		$	41,733

The non-current portion of the deferred tax assets as of February 2, 2013 and January 28, 2012 was $26.3 million and $31.1 million, respectively, and is included in other non-current assets. During fiscal 2013, deferred tax assets, net of a corresponding valuation allowance decreased $7.0 million from the end of fiscal 2012, mostly due to electing bonus depreciation for assets placed in service in the United States which created a deferred tax liability of $4.6 million. Bonus depreciation was recently extended for assets placed in service before January 1, 2014 under the American Taxpayer Relief Act of 2012.

As of February 2, 2013, the Company had net operating loss carryforwards available to offset future taxable income of approximately $80.5 million, $2.2 million and $7.5 million for foreign, U.S. federal and state of California purposes, respectively. The federal carryforwards will expire in various fiscal years between 2021 and 2027, and the California carryforwards will expire at various fiscal years between 2016 and 2033, if not utilized before these years. The losses in non-U.S. companies can be carried forward indefinitely. For U.S. federal income tax return purposes, the Company had research tax credit and solar credit carryforwards of approximately $194.4 million that expire through fiscal 2033. As of February 2, 2013, the Company had unused California research and tax credit carryforwards of approximately $193.7 million, which can be carryforward indefinitely. Included in the U.S. federal and California carryforward amounts are $51.7 million and $53.5 million, respectively, that are attributable to excess tax benefits from stock options. Upon realization, the benefit associated with these credits will increase additional paid-in capital. The Company also has research and investment tax credit carryforwards of approximately $16.7 million in other U.S. states that expire through fiscal 2028 due to the statute of limitation.

At the end of fiscal 2013, the Company has provided a full valuation allowance against its federal and various state research credits which it earns in excess of its current year tax liabilities, as well as its net operating loss carryforwards. Based on the available objective positive and negative evidence, the Company has determined that it is more likely than not that these research credits and acquired net operating losses will not be realized. Therefore, the Company has recorded a valuation allowance of $299.5 million, an increase of $40.1 million from fiscal 2012.

Reconciliation of the statutory federal income tax to the Company’s effective tax:


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Provision at U.S. notional statutory rate		35.0	%		35.0	%		35.0	%
Non-deductible stock-based compensation		15.4			6.9			5.6
Difference in U.S. and non-U.S. tax rates		(48.8	)		(40.7	)		(40.0	)
Benefits from utilization of general business credits		(13.8	)		(6.8	)		(3.7	)
Change in valuation allowance		12.9			5.6			3.4
Other		0.5			0.6			0.4

Effective tax rate		1.2	%		0.6	%		0.7	%

The following table reflects changes in the unrecognized tax benefits (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Unrecognized tax benefits as the beginning of the period	$	96,294		$	102,612		$	103,334
Increases related to prior year tax positions		1,106			987			494
Decreases related to prior year tax positions		—			(307	)		(149	)
Increases related to current year tax positions		1,139			1,229			1,317
Settlements		(3,956	)		(243	)		—
Lapse in the statute of limitations		(15,543	)		(9,529	)		(10,293	)
Foreign exchange (gain) loss		(9	)		1,545			7,909

Gross amounts of unrecognized tax benefits as of the end of the period	$	79,031		$	96,294		$	102,612

Included in the balances as of February 2, 2013 is $61.6 million of unrecognized tax benefit that would affect the effective income tax rate if recognized.

The amounts in the table above do not include the related interest and penalties. The amount of interest and penalties accrued as of February 2, 2013 was approximately $33.8 million, as of January 28, 2012 was approximately $35.3 million, and as of January 29, 2011 was approximately $33.4 million. The consolidated statements of operations for fiscal 2013, 2012 and 2011 included $5.8 million, $5.9 million and $7.0 million, respectively, of interest and penalties related to the unrecognized tax benefits.

The Company is subject to income tax audits by the respective tax authorities in all of the jurisdictions in which it operates. The examination of tax liabilities in each of these jurisdictions requires the interpretation and application of complex and sometimes uncertain tax laws and regulations. As of February 2, 2013, the material jurisdictions that are subject to examination include China, Israel, Singapore, Switzerland and the United States for the Company’s fiscal years 2003 through 2013. As of February 2, 2013, three of the Company’s non-U.S. entities are under examination for fiscal years encompassing 2006 through 2010, and two of the Company’s U.S. entities are under exam for fiscal 2010 through fiscal 2012.

During fiscal 2013, the Company will continue to review its tax positions and provide for or reverse unrecognized tax benefits as issues arise. During the next 12 months, it is reasonably possible that the amount of unrecognized tax benefits could decrease due to potential settlement with tax authorities and the expiration of applicable statutes of limitations. However, the amount cannot be reasonably estimated as the Company will have negotiations with various tax authorities throughout the year.

The Economic Development Board of Singapore (the “EDB”) initially granted a 10 year Pioneer Status in July 1999 to the Company’s subsidiary in Singapore if the Company meets several requirements as to investments, headcount and activities. In June 2006, the EDB agreed to extend the Pioneer Status to 15 years to June 2014 rather than 10 years. Fiscal 2013, 2012 and 2011 tax savings associated with this tax holiday were approximately $13.6 million, $3.1 million and $7.9 million, respectively, which if paid would impact the Company’s earnings per share results by $0.02 per share for fiscal 2013 and $0.01 per share for fiscal 2012 and fiscal 2011. As a result, the Company anticipates that a significant portion of the income it earns in Singapore during this period will be exempt from the Singapore income tax.

Under the Israeli Encouragement law of “approved or benefited enterprise,” two branches of Marvell Israel (M.I.S.L) Ltd. (“MISL”), the GTL branch and the cellular branch (formerly Marvell DSPC), are entitled to approved and benefited tax programs that include reduced tax rates and exemption of certain income. The first program was approved for MISL in fiscal 1996 and the most recent was started in fiscal 2013. The cellular branch has five approved programs and three benefited programs with the first approved in fiscal 1991 and the most recent benefited enterprise started in fiscal 2011. The benefit period is generally 10 to 15 years and begins in the first year in which the Company’s Israeli divisions earn taxable income from the approved or benefited enterprises, provided the maximum period has not elapsed. Income from the approved or benefited enterprises is subject to reduced tax rates ranging between 0% and 10% or tax exemptions for fiscal years 2008 through fiscal 2027. A new amendment to the Encouragement law, which was approved by the Israeli government in December 2011, came into effect January 1, 2012. For fiscal 2013, 2012 and 2011, the benefit associated with these approved or benefited enterprise programs was $13.8 million and $13.6 million and $18.4 million, respectively, which provided earnings per share benefit of $0.02 per share for fiscal 2013 and 2012 and $0.03 for fiscal 2011.

During fiscal 2007, each of the Swiss Federal Department of Economy and the Vaud Cantonal Tax Administration granted the Company’s subsidiary in Switzerland a 10 year tax holiday on revenues from research and design wafer supply trading activities commencing with its fiscal 2007. The fiscal 2013, 2012 and 2011 tax savings associated with this tax holiday is approximately $4.6 million, $4.7 million and $4.5 million, respectively, which provided an earnings per share benefit of less than $0.01 for all three years.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

+ Details

Commitments and Contingencies

12 Months Ended

Feb. 02, 2013

Commitments and Contingencies

Note 10 — Commitments and Contingencies:

Warranty Obligations

The Company’s products carry a standard 90 day warranty with certain exceptions in which the warranty period can extend to more than one year based on contractual agreements. The following table presents changes in the warranty accrual included in accrued liabilities in the Company’s consolidated balance sheets (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Beginning balance	$	2,354		$	2,439		$	1,965
Warranty expense		679			1,126			2,291
Acquisitions		—			408			—
Payments and other charges		(1,097	)		(1,619	)		(1,817	)

Ending balance	$	1,936		$	2,354		$	2,439

Lease Commitments

The Company leases some of its facilities, equipment and computer aided design software under non-cancelable operating leases. Rent expense, net of sublease income for fiscal 2013, 2012 and 2011 was approximately $23.7 million, $20.5 million and $17.1 million, respectively. The Company also purchases certain intellectual property under technology license obligations. Future minimum lease payments, net of estimated sublease, and payments under technology license obligations as of February 2, 2013, are presented in the following tables (in thousands):


Fiscal Year:	Minimum Lease Payments		Sublease Income			Net Operating Leases
2014	$	48,751	$	(215	)	$	48,536
2015		43,704		(72	)		43,632
2016		26,882		(75	)		26,807
2017		6,677		(46	)		6,631
2018		1,453		—			1,453
Thereafter		2,936		—			2,936

Total future minimum lease payments	$	130,403	$	(408	)	$	129,995


Fiscal Year:	Technology License Obligations
2014	$	9,351
2015		9,579
2016		9,807
2017		7,869
2018		9,180
Thereafter		—

Total future minimum lease payments	$	45,786

Less: amount representing interest		(3,094	)

Present value of future minimum payments		42,692
Less: current portion		(8,422	)

Non-current portion	$	34,270

Technology license obligations include the liabilities under the subscription agreements for technology licenses between the Company and various vendors.

Purchase Commitments

Under the Company’s manufacturing relationships with its foundry partners, cancellation of all outstanding purchase orders are allowed but require payment of all costs and expenses incurred through the date of cancellation. As of February 2, 2013, these foundries had incurred approximately $212.1 million of manufacturing costs and expenses relating to the Company’s outstanding purchase orders.

Intellectual Property Indemnification

The Company has agreed to indemnify certain customers for claims made against the Company’s products, where such claims allege infringement of third party intellectual property rights, including, but not limited to, patents, registered trademarks, and/or copyrights. Under the aforementioned indemnification clauses, the Company may be obligated to defend the customer and pay for the damages awarded against the customer under an infringement claim as well as the customer’s attorneys’ fees and costs. The Company’s indemnification obligations generally do not expire after termination or expiration of the agreement containing the indemnification obligation. Generally, there are limits on and exceptions to the Company’s potential liability for indemnification. Although historically the Company has not made significant payments under these indemnification obligations, the Company cannot estimate the amount of potential future payments, if any, that it might be required to make as a result of these agreements. The maximum potential amount of any future payments that the Company could be required to make under these indemnification obligations could be significant.

Contingencies

The Company and certain of its subsidiaries are currently a party to various legal proceedings, including those noted in this section. The legal proceedings and claims described below could result in substantial costs and could divert the attention and resources of the Company’s management. Litigation is subject to inherent uncertainties and unfavorable rulings could occur. An unfavorable ruling in litigation could require the Company to pay damages, one-time license fees, or ongoing royalty payments and could prevent the Company from manufacturing or selling some of its products or limit or restrict the type of work that employees involved in such litigation may perform for the Company, any of which could adversely affect financial results in future periods. The Company believes that its products do not infringe valid and enforceable claims and it will continue to conduct a vigorous defense in these proceedings. However, there can be no assurance that these matters will be resolved in a manner that is not adverse to the Company’s business, financial condition, results of operations or cash flows.

The Company has recorded an accrual of $5.7 million in fiscal 2013 related to an ongoing litigation matter. The amount recorded does not relate to the litigation with Carnegie Mellon University (“CMU”). Other than the matter for which the Company has recorded an accrual of $5.7 million, the Company has not recorded an accrual for contingent losses associated with these matters based on its belief that losses, while reasonably possible, are not probable. The Company is currently unable to predict the final outcome of these lawsuits and therefore cannot determine the likelihood of loss nor estimate a range of possible loss.

Carnegie Mellon Litigation. On March 6, 2009, CMU filed a complaint in the U.S. District Court for the Western District of Pennsylvania naming Marvell Semiconductor, Inc. (“MSI”) and the Company as defendants and alleging patent infringement. CMU has asserted U.S. Patent Nos. 6,201,839 and 6,438,180 (collectively, the “CMU patents in suit”), which relate to read-channel integrated circuit devices and the HDD products incorporating such devices. A jury trial began on November 26, 2012. On December 26, 2012, a jury delivered a verdict that found the CMU patents in suit were literally and willfully infringed and valid, and awarded past damages in the amount of $1.17 billion. Due to the finding of willfulness, the judge could enhance by some amount up to treble the damages during post trial proceedings. In addition, CMU has disclosed in its post trial motions that it is seeking pre-judgment interest of $322 million, post-judgment interest, attorneys’ fees, and an injunction or ongoing royalties. Post trial motions are scheduled to be heard on May 1 and 2, 2013, and the Company expects the District Court to issue its final judgment some time thereafter.

The Company and MSI believe that the evidence and the law do not support the jury’s findings of infringement, validity and the award of damages and do not believe a material loss is probable. The Company believes that there are strong grounds for appeal and the Company and MSI will seek to overturn the verdict in post trial motions before the District Court and, if necessary, to appeal to the U.S. Court of Appeals for the Federal Circuit in Washington, D.C. The Company and MSI intend to vigorously challenge the judgment through all appropriate post trial motions and appeal processes. In addition, the District Court in Pittsburgh has yet to rule on certain of the Company’s defenses and motions, including laches and the Company’s renewed request for a mistrial.

Jasmine Networks Litigation. On September 12, 2001, Jasmine Networks, Inc. (“Jasmine”) filed a lawsuit in the Santa Clara County Superior Court alleging claims against MSI and three of its officers for allegedly improperly obtaining and using information and technologies during the course of the negotiations with its personnel regarding the potential acquisition of certain Jasmine assets by MSI.

The case proceeded to trial on September 20, 2010. On November 24, 2010, a Santa Clara County jury returned a verdict in favor of MSI on all claims. On January 7, 2011, the court entered judgment in MSI’s favor. Pursuant to California Civil Procedure provisions, Jasmine filed motions for a new trial and for a judgment notwithstanding the verdict. These motions were heard by the court on February 25, 2011 and denied in written orders. Jasmine has appealed and MSI is contesting the appeal vigorously.

USEI Litigation. On October 9, 2009, U.S. Ethernet Innovations, LLC (“USEI”) filed a complaint in the U.S. District Court for the Eastern District of Texas, in which USEI has accused a number of system manufacturers, including the Company’s customers, of patent infringement (the “USEI litigation”). Specifically, USEI has asserted that these customers infringe U.S. Patent Nos. 5,307,459, 5,434,872, 5,732,094 and 5,299,313 (collectively, the “USEI patents in suit”), which relate to Ethernet technologies. The complaint seeks unspecified damages and an injunction.

On May 4, 2010, MSI filed a motion to intervene in the USEI litigation, which was granted on May 19, 2010. On July 13, 2010, the district court issued an order granting the defendants’ motion to transfer the action to the Northern District of California; the case was formally transferred on August 23, 2010. On September 14, 2011, USEI withdrew its allegations against MSI for the ‘459 patent. On October 21, 2011, the court conducted a claim construction hearing, and a ruling was issued on January 31, 2012. A supplemental claim construction hearing was held on May 3, 2012, and the claim construction was issued on August 29, 2012. Trial is scheduled for January 5, 2015.

Lake Cherokee Patent Litigation. On June 30, 2010, Lake Cherokee Hard Drive Technologies, L.L.C. filed a complaint in the U.S. District Court for the Eastern District of Texas. The complaint alleges infringement of U.S. Patent Nos. 5,844,738 and 5,978,162 (collectively, the “Lake Cherokee patents in suit”). The Lake Cherokee patents in suit relate to read-channel integrated circuit devices, and to certain HDD products incorporating such devices. MSI filed its answer and counterclaims to the complaint on September 13, 2010. Defendants filed a motion to transfer on April 1, 2011, which was denied on February 13, 2012. Lake Cherokee filed an amended complaint on April 21, 2011. MSI filed its answer and counterclaims to the amended complaint on May 9, 2011. A claim construction hearing was held on May 14, 2012, and the claim construction was issued on August 6, 2012. Trial is set for August 5, 2013.

APT Patent Litigations. On January 18, 2011, Advanced Processor Technologies, LLC (“APT”), a subsidiary of Acacia Research Corp., filed a complaint in the U.S. District Court for the Eastern District of Texas. The complaint names MSI and eight other defendants and alleges infringement of U.S. Patent Nos. 6,047,354 (“’354 patent”) and 5,796,978 (“’978 patent”). The asserted patents relate to microprocessor technologies. The complaint seeks unspecified damages and a permanent injunction. A first amended complaint was filed on January 26, 2011. The first amended complaint continues to assert the ‘354 patent against MSI, but appears to no longer assert the ‘978 patent against MSI. MSI filed its answer and counterclaims on April 15, 2011. A claim construction hearing was held on January 29, 2013. On March 23, 2012, APT filed a separate complaint in the U.S. District Court for the Eastern District of Texas. The complaint alleges that MSI infringes U.S. Patent Nos. 6,092,172 and 6,629,207. The asserted patents relate to microprocessor technologies. The complaint seeks unspecified damages and a permanent injunction. MSI filed its answer and counterclaims on May 25, 2012. In both cases, ARM filed a motion to intervene on July 23, 2012, which was granted on January 7, 2013, and a motion to transfer on July 27, 2012, which was denied on March 20, 2013. On January 30, 2013, the Court consolidated these two cases, as well as several other cases that APT had filed against various defendants, into a single case. A claim construction hearing in the consolidated case is scheduled for May 14, 2013 and jury selection is set for January 6, 2014.

MOSAID Litigation. On March 16, 2011, MOSAID Technologies Inc. filed suit in the U.S. District for the Eastern District of Texas against MSI and 16 other companies. The complaint alleges that defendants’ products, which operate in compliance with the IEEE 802.11a, 802.11b, 802.11g, and 802.11n standards, infringe the six asserted patents (U.S. Patent Nos. 5,131,006; 5,151,920; 5,422,887; 5,706,428; 6,563,768; 6,992,972). MSI filed its answer and counterclaims on June 9, 2011. On March 28, 2012, MSI and other defendants filed a motion to transfer, which was denied. A claim construction hearing is scheduled for April 16, 2013 and jury selection is set for January 8, 2014.

Azure Networks Litigation. On March 22, 2011, Azure Networks, LLC and Tri-County Excelsior Foundation filed suit in the Eastern District of Texas against MSI and eight other companies. The Complaint asserts U.S. Patent No. 7,756,129 against MSI’s Bluetooth products. MSI filed its answer and counterclaims on July 20, 2011. On December 9, 2011, defendants filed a motion to dismiss or transfer venue to S.D.N.Y. or, alternatively, to N.D. Cal., which was denied on June 25, 2012. On November 2, 2012, defendants filed a motion for summary judgment of invalidity, which was denied. A claim construction hearing was held on December 20, 2012. On January 15, 2013, the magistrate judge issued a Markman ruling. Currently, a trial is set for November 12, 2013. MSI believes that it does not infringe any valid and enforceable claim of the Azure Networks patents in suit, and intends to litigate this action vigorously.

Power Management Systems Litigation. On August 22, 2011, Power Management Systems LLC (“PMS”), a subsidiary of Acacia Research Corp., filed a complaint against the Company’s subsidiary Marvell Semiconductor, Ltd. (“MSL”) and other defendants, in the U.S. District Court for the District of Delaware. The complaint asserts U.S. Patent No. 5,504,909, which relates to a power management apparatus, against various products. The complaint seeks unspecified damages. On October 17, 2011, PMS amended its complaint by substituting MSL with MSI. MSI filed its answer and counterclaims on November 4, 2011. A claim construction hearing was held on January 18, 2013 and trial is set for March 3, 2014.

HSM/TPL Litigation. On September 1, 2011, HSM Portfolio, LLC and Technology Properties Limited, LLC filed a complaint against the Company and MSL in the U.S. District Court for the District of Delaware. The complaint also named numerous other defendants. The complaint asserts U.S. Patent No. 5,030,853, relating to high speed logic and memory circuitry, against various products. The complaint seeks unspecified damages. On January 9, 2012, HSM/TPL filed an amended complaint adding MSI to the case. On February 15, 2012, the Company and MSL were dismissed from the case. On July 18, 2012, HSM filed a second amended complaint against MSI, and MSI filed its answer and counterclaims on August 13, 2012. A claim construction hearing is scheduled for November 25, 2013, and trial is scheduled to commence on January 25, 2015.

France Telecom Litigation. On June 26, 2012, France Telecom S.A. (“France Telecom”) filed a complaint against MSI in the U.S. District Court for the Southern District of New York. The complaint asserts U.S. Patent No 5,446,747 (the “’747 patent”) against MSI’s communications processors and thin modems. The complaint seeks unspecified damages as well as injunctive relief. MSI answered the complaint on July 18, 2012 and August 1, 2012. On July 30, 2012, MSI filed a motion to transfer the lawsuit to the U.S. District Court for the Northern District of California. On September 17, 2012, the Court granted MSI’s motion and transferred the case to the Northern District of California. A claim construction hearing is scheduled for July 24, 2013, and a trial is scheduled for May 12, 2014.

Freescale Litigation. On July 6, 2012, Freescale Semiconductor, Inc. (“Freescale”) filed a complaint against MSI in the U.S. District Court for the Western District of Texas. The complaint asserts U.S. Patent Nos. 6,920,316, 5,825,640, 5,943,274, 5,467,455 and 7,927,927 (collectively, the “Freescale patents in suit”) against certain of the Company’s integrated circuits and/or chipsets. The complaint seeks unspecified damages and a permanent injunction. On September 17, 2012, MSI filed a motion to dismiss the complaint for failure to state a claim pursuant to FRCP 12(b)(6) as to direct infringement of U.S. Patent No. 7,927,927, indirect infringement of the Freescale patents in suit, and willful infringement of the Freescale patents in suit. Freescale filed an amended complaint on January 14, 2013, and withdrew its assertion of U.S. Patent No. 5,825,640; MSI filed its answer to the amended complaint on February 4, 2013. This case has been consolidated for pre-trial purposes with nine other pending cases. A claim construction hearing is scheduled for September 9, 2013.

On January 4, 2013, three of the Company’s subsidiaries, MSI, Marvell International Ltd. and Marvell World Trade Ltd., filed a complaint against Freescale in the U.S. District Court for the Western District of Texas, and filed an amended complaint on January 14, 2013. The amended complaint alleges that Freescale infringes U.S. Patents Nos. 6,903,448 and 7,379,718.

Indemnities, Commitments and Guarantees

During its normal course of business, the Company has made certain indemnities, commitments and guarantees under which it may be required to make payments in relation to certain transactions. These indemnities may include intellectual property indemnities to the Company’s customers in connection with the sales of its products, indemnities for liabilities associated with the infringement of other parties’ technology based upon the Company’s products, indemnities for general commercial obligations, indemnities to various lessors in connection with facility leases for certain claims arising from such facility or lease, and indemnities to directors and officers of the Company to the maximum extent permitted under the laws of Bermuda. In addition, the Company has contractual commitments to various customers, which could require the Company to incur costs to repair an epidemic defect with respect to its products outside of the normal warranty period if such defect were to occur. The duration of these indemnities, commitments and guarantees varies, and in certain cases, is indefinite. Some of these indemnities, commitments and guarantees do not provide for any limitation of the maximum potential future payments that the Company could be obligated to make. In general, the Company does not record any liability for these indemnities, commitments and guarantees in the accompanying consolidated balance sheets as the amounts cannot be reasonably estimated and are not considered probable. The Company does, however, accrue for losses for any known contingent liability, including those that may arise from indemnification provisions, when future payment is probable.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Benefit Plans

12 Months Ended

Feb. 02, 2013

Benefit Plans

Note 11 — Benefit Plans:

The Company sponsors a 401(k) savings and investment plan that allows eligible U.S. employees to participate by making pre-tax contributions to the 401(k) plan ranging from 1% to 50% of eligible earnings subject to a required annual limit. The Company matches 100% of the employee contribution up to $500 per eligible employee on a quarterly basis. The participant must be employed by the Company on the last day of the calendar quarter to qualify for the match. At the end of the calendar year, the eligible employees receive a true-up match equal to the accumulated employee contribution for the calendar year up to $2,000. The Company made matching contributions to employees of $5.0 million, $4.8 million and $4.5 million during fiscal 2013, 2012 and 2011, respectively. As of February 2, 2013, the 401(k) plan offers a variety of investment alternatives, representing different asset classes. Employees may not invest in the Company’s common shares through the 401(k) plan.

The Company also has voluntary defined contribution plans in various non-U.S. locations. The Company made contributions on behalf of employees totaling $17.2 million, $16.2 million and $16.0 million during fiscal 2013, 2012 and 2011, respectively. The Company also maintains a limited number of defined benefit plans for certain non-U.S. locations. Total costs under these plans were not significant.

Shareholders' Equity

12 Months Ended

Feb. 02, 2013

Shareholders' Equity

Note 12 — Shareholders’ Equity:

Common and Preferred Stock

As of February 2, 2013, the Company is authorized to issue 992.0 million shares of $0.002 par value common stock and 8.0 million shares of $0.002 par value preferred stock. As of February 2, 2013 and January 28, 2012, no shares of preferred stock were outstanding.

1995 Stock Option Plan

In April 1995, the Company adopted the 1995 Stock Option Plan (the “Option Plan”). The Option Plan, as amended from time to time, had 383.4 million common shares reserved for issuance thereunder as of February 2, 2013. Options granted under the Option Plan generally have a term of 10 years and generally must be issued at prices equal to the fair market value of the stock on the date of grant. Incentive stock options granted to shareholders who own greater than 10% of the outstanding stock at the time of the grant may not have a term exceeding five years and these options must be issued at prices of at least 110% of the fair market value of the stock on the date of grant.

In addition, the Company can also grant stock awards, which may be subject to vesting. Further, the Company can grant restricted stock unit awards. Restricted stock unit awards are denominated in shares of stock, but may be settled in cash or shares upon vesting, as determined by the Company at the time of grant.

Equity awards to new hires under the Option Plan generally vest 20% one year after the vesting commencement date, and the remaining shares vest one-sixtieth per month over the remaining 48 months. Other equity awards generally vest annually in four equal installments.

As of February 2, 2013, approximately 111.5 million shares remained available for future issuance under the Option Plan.

1997 Directors’ Stock Option Plan

In August 1997, the Company adopted the 1997 Directors’ Stock Option Plan (the “1997 Directors’ Plan”). Under the 1997 Directors’ Plan, an outside director was granted an option to purchase 30,000 common shares upon appointment to the Company’s Board of Directors. These options vested 20% one year after the vesting commencement date and remaining shares vest one-sixtieth per month over the remaining 48 months. An outside director was also granted an option to purchase 6,000 common shares on the date of each annual meeting of the shareholders. These options vested one-twelfth per month over 12 months after the fourth anniversary of the vesting commencement date. Options granted under the 1997 Directors’ Plan could be exercised prior to vesting and had a term of 10 years. The 1997 Directors’ Plan was terminated in October 2007. There are two outstanding grants remaining under the 1997 Directors’ Plan.

2007 Directors’ Stock Incentive Plan

In October 2007, the Company adopted the 2007 Directors’ Stock Incentive Plan (the “2007 Directors’ Plan”). Shareholders have approved 750,000 common shares for issuance, which is the total amount authorized under the 2007 Directors’ Plan. On March 15, 2012, the Board approved an amendment and restatement to revise the size of automatic annual awards under the 2007 Directors’ Plan. Prior to the amendment and restatement, each outside director was granted an option to purchase 50,000 common shares upon his or her initial appointment to the Company’s Board of Directors. These options vested one-third on the one year anniversary of the date of grant and one-third of the shares on each one-year anniversary thereafter.

In fiscal 2012, an outside director who had been serving on the Company’s Board of Directors for the prior six months was granted — upon re-election by the shareholders at the annual general meeting — an option to purchase 9,000 common shares immediately following each annual general meeting of shareholders. These options vest 100% on the earlier of the date of the next annual general meeting of shareholders or the one year anniversary of the date of grant. In addition, an outside director who had been serving on the Company’s Board of Directors for the prior six months was also granted a restricted stock unit award (the “Annual RSU Award”) that covered a number of shares with an aggregate fair market value as reported on the NASDAQ Global Select Market equal to $70,000 immediately following the annual general meeting of shareholders. These Annual RSU Awards vest 100% on the earlier of the date of the next annual general meeting of shareholders or the one year anniversary of the date of grant.

Beginning in fiscal 2013, each outside director who was appointed at the annual general meeting of shareholders was granted a stock option award that covers a number of shares with an aggregate grant date fair value equal to $110,000 immediately following each annual general meeting of shareholders. In addition, each outside director was granted an Annual RSU Award that will cover a number of shares with an aggregate fair market value equal to $110,000 immediately following each annual general meeting of shareholders. The annual stock option award and the Annual RSU Award vest 100% on the earlier of the date of the next annual general meeting of shareholders or the one year anniversary of the date of grant. An outside director who is elected or appointed after an annual general meeting of shareholders will receive a pro rata stock option award and restricted stock unit award based on the number of quarters completed since such annual general meeting of shares.

As of February 2, 2013, approximately 343,000 shares remained available for future issuance under the 2007 Directors’ Plan.

2000 Employee Stock Purchase Plan

Under the 2000 Employee Stock Purchase Plan, as amended and restated on October 31, 2011 (the “ESPP”), participants purchase the Company’s stock using payroll deductions, which may not exceed 15% of their total cash compensation. Pursuant to the terms of the current ESPP, the “look-back” period for the stock purchase price was changed from six months to 24 months. This change was effective for the offering that began in December 2011 and is applicable for each successive offering period thereafter. Offering and purchase periods will continue to begin on December 8 and June 8 of each year. Participants enrolled in a 24-month offering period will continue in that offering period until the earlier of the end of the offering period or the reset of the offering period. A reset occurs if the fair market value of the Company’s common shares on any purchase date is less than it was on the first day of the offering period. Participants in a 24-month offering period will be granted the right to purchase common shares at a price per share that is 85% of the lesser of the fair market value of the shares at (i) the participant’s entry date into the two-year offering period or (ii) the end of each six-month purchase period within the offering period.

During fiscal 2013, a total of 7.6 million shares were issued under the ESPP at a weighted-average price of $8.77. During fiscal 2012, a total of 4.9 million shares were issued under the ESPP at a weighted-average price of $12.48. During fiscal 2011, a total of 10.9 million shares were issued under the ESPP at a weighted-average price of $5.27.

As of February 2, 2013, approximately 26.6 million shares remained available for future issuance under the ESPP.

Option Plan and Stock Award Activity

During the first quarter of fiscal 2012, the Company issued 3.1 million stock options with a market-based condition for a group of senior employees. If the market price condition is not met within five years from the date of grant, the options automatically expire.

The following table summarizes the activity under all of the option plans and other stock based arrangements (in thousands, except for per share amounts):


	Time-Based Options					Market-Based Options					Total
	Options Outstanding			Weighted Average Exercise Price		Options Outstanding			Weighted Average Exercise Price		Options Outstanding			Weighted Average Exercise Price
Balance at January 30, 2010		70,966		$	11.28		—			—		70,966		$	11.28
Granted		2,018		$	20.17		—			—		2,018		$	20.17
Exercised		(13,959	)	$	8.45		—			—		(13,959	)	$	8.45
Canceled/Forfeited		(2,700	)	$	18.47		—			—		(2,700	)	$	18.47
Expired		—			—		—			—		—			—

Balance at January 29, 2011		56,325		$	11.96		—			—		56,325		$	11.96
Granted		3,477		$	15.31		3,149		$	15.43		6,626		$	15.37
Exercised		(5,681	)	$	7.95		—			—		(5,681	)	$	7.95
Canceled/Forfeited		(1,654	)	$	14.57		(25	)	$	15.43		(1,679	)	$	14.58
Expired		—			—		—			—		—			—

Balance at January 28, 2012		52,467		$	12.53		3,124		$	15.43		55,591		$	12.70
Granted		7,041		$	14.59		—			—		7,041		$	14.59
Exercised		(5,977	)	$	6.44		—			—		(5,977	)	$	6.44
Canceled/Forfeited		(3,894	)	$	16.10		(365	)	$	15.43		(4,259	)	$	16.04
Expired		—			—		—			—		—			—

Balance at February 2, 2013		49,637		$	13.28		2,759		$	15.43		52,396		$	13.39

Vested or expected to vest at February 2, 2013		48,584		$	13.25

Exercisable at February 2, 2013		39,789		$	12.91

For time-based stock options vested and expected to vest at February 2, 2013, the aggregate intrinsic value was $29.6 million and the weighted average remaining contractual term was 4.4 years. For time-based stock options exercisable at February 2, 2013, the aggregate intrinsic value was $28.3 million and the weighted average remaining contractual term was 3.5 years. The aggregate intrinsic value of stock options exercised during fiscal 2013, 2012 and 2011 was $33.6 million, $41.8 million and $162.9 million, respectively. There was no aggregate intrinsic value for market-based stock options at February 2, 2013 and the weighted average remaining contractual term of market-based stock options vested and expected to reach the end of the vesting period at February 2, 2013 was 8.2 years. The Company’s closing stock price of $9.51 as reported on the NASDAQ Global Select Market for all in-the-money options as of February 1, 2013 was used to calculate the aggregate intrinsic value.

As of February 2, 2013, the unamortized compensation expense for time-based stock options was $41.3 million and market-based stock options was $4.6 million. The unamortized compensation expense for time-based and market-based stock options will be amortized on a straight-line basis and is expected to be recognized over a weighted-average period of 2.7 years and 0.9 years, respectively.

Included in the following table is activity related to the non-vested portion of the restricted stock units as follows (in thousands, except for share prices):


	Restricted Stock Outstanding			Weighted Average Grant Date Fair Value
Balance at January 30, 2010		2,746		$	8.99
Granted		4,718		$	20.76
Vested		(1,619	)	$	9.13
Canceled/Forfeited		(359	)	$	13.87

Balance at January 29, 2011		5,486		$	18.75
Granted		6,877		$	15.80
Vested		(2,014	)	$	15.90
Canceled/Forfeited		(703	)	$	16.81

Balance at January 28, 2012		9,646		$	17.38
Granted		7,370		$	14.64
Vested		(2,796	)	$	17.78
Canceled/Forfeited		(1,481	)	$	17.16

Balance at February 2, 2013		12,739		$	15.78

The aggregate intrinsic value of restricted stock units expected to vest as of February 2, 2013 was $108.7 million. The number of restricted stock units that are expected to vest is 11.4 million shares.

As of February 2, 2013, compensation costs related to restricted stock units not yet recognized amounted to $134.0 million. The unamortized compensation expense for restricted stock units will be amortized on a straight-line basis and is expected to be recognized over a weighted-average period of 2.7 years.

Share-Based Compensation

The following table presents details of share-based compensation expenses by functional line item (in thousands):


	Year Ended
	February 2, 2013		January 28, 2012		January 29, 2011
Cost of goods sold	$	8,142	$	6,995	$	7,522
Research and development		87,149		85,924		82,524
Selling and marketing		13,278		12,920		11,769
General and administrative		18,711		14,024		16,590

	$	127,280	$	119,863	$	118,405

Share-based compensation capitalized in inventory was $1.5 million at February 2, 2013, $2.1 million at January 28, 2012 and $1.5 million at January 29, 2011.

Valuation Assumptions

The expected volatility for awards granted during fiscal 2013 and 2012 was based on an equally weighted combination of historical stock price volatility and implied volatility derived from traded options on the Company’s stock in the marketplace. The expected volatility for awards granted during fiscal 2011 was based solely on historical stock price volatility. The Company believes that the combination of historical volatility and implied volatility provides a better estimate of future stock price volatility.

The expected dividend yield is calculated by dividing annualized dividend payments by the closing stock price on the date of grant of the option.

The following weighted average assumptions were used for each respective period to calculate the fair value of each time-based equity award on the date of grant using the Black-Scholes option pricing model and of each market-based equity award using a Monte Carlo simulation model:


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Time-based Stock Options:
Weighted average fair value	$	5.52		$	6.05		$	9.33
Expected volatility		44	%		44	%		53	%
Expected term (in years)		4.8			4.8			4.7
Risk-free interest rate		0.9	%		2.0	%		2.2	%
Expected dividend yield		0.3	%		—			—

The expected dividend yield for options granted during fiscal year 2013 used to calculate the weighted average in the above table ranged from 0% to 3.1%.


	Year Ended
	February 2, 2013			January 28, 2012
Market-based Stock Options:
Weighted average fair value	$	—		$	5.08
Expected volatility		—	%		42	%
Risk-free interest rate		—	%		0.9 - 3.6	%

There were no market-based stock options granted during fiscal 2013. The above table includes market-based stock options granted during the three months ended April 30, 2011. The fair value of each market-based stock option award is estimated on the date of grant using a Monte Carlo simulation model that uses the assumptions noted in the above table, including the same volatility applied to the Company’s time-based options. Because a Monte Carlo simulation model incorporates ranges of assumptions for inputs, those ranges are disclosed where applicable. The Company uses historical data to estimate employee termination within the valuation model. The expected term was 2.66 years for market-based stock options granted during the three months ended April 30, 2011 and was derived from the output of the valuation model and represents the period of time that options granted are expected to be outstanding.


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Employee Stock Purchase Plan:
Estimated fair value	$	3.13		$	4.63		$	5.91
Volatility		40	%		44	%		53	%
Expected term (in years)		1.2			1.1			0.5
Risk-free interest rate		0.2	%		0.1	%		0.2	%
Dividend yield		2.4	%		—			—

Share Repurchase Program

In August 2010, the Company announced that its board of directors had authorized a share repurchase program of up to $500 million of the Company’s common shares in open market, privately negotiated or block transactions.

In March, July and December 2011, and May and December 2012, the Company announced that its board of directors authorized the Company to repurchase up to an additional $500 million, respectively, for a total of $3.0 billion, of its outstanding common shares. The repurchase program is subject to market conditions and other factors and does not obligate the Company to repurchase any dollar amount or number of its common shares. The program may be extended, modified, suspended or discontinued at any time. The future repurchases, which are expected to be funded from the Company’s current cash and short-term investments position of over $1.9 billion, may occur in open market, privately negotiated or block transactions.

The Company repurchased 91.0 million of its common shares for $959.1 million in cash during fiscal 2013, 87.8 million of its common shares for $1.3 billion in cash during fiscal 2012 and 4.9 million of its common shares for $87.5 million in cash during fiscal 2011. All of the repurchased shares were retired immediately after the repurchases were completed. The Company records all repurchases, as well as investment purchases and sales, based on trade date. Approximately $22.2 million of the repurchases was made in the final 3 days of the fiscal year and was not included in the consolidated statement of cash flow due to the standard 3-day settlement period. As of February 2, 2013, a total of 183.7 million cumulative shares have been repurchased under the Company’s share repurchase program for a total $2.4 billion in cash and there was $612.6 million remaining available for future share repurchases.

Subsequent to the end of fiscal 2013 through March 21, 2013, the Company repurchased an additional 8.7 million of its common shares for $85.5 million at an average price per share of $9.80.

Dividends

In May 2012, the Company announced the initiation of paying its first quarterly dividend of $0.06 per share. Future payment of a regular quarterly cash dividend on the Company’s common shares will be subject to, among other things, the best interests of its shareholders, the Company’s results of operations, cash balances and future cash requirements, financial condition, statutory requirements of Bermuda law and other factors that the Company’s board of directors may deem relevant. As a result, cash dividends of $0.18 per share were paid for a total of $98.8 million during fiscal 2013.

On February 21, 2013, the Company announced that its board of directors declared a cash dividend of $0.06 per share to be paid on April 4, 2013 to shareholders of record as of March 14, 2013.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.4-08.(d),(e))
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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
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Reference 23: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Segment and Geographic Information

12 Months Ended

Feb. 02, 2013

Segment and Geographic Information

Note 13 — Segment and Geographic Information:

The Company operates in one reportable segment — the design, development and sale of integrated circuits. The chief executive officer has been identified as the chief operating decision maker (“CODM”). The Company’s CODM is ultimately responsible and actively involved in the allocation of resources and the assessment of the Company’s operational and financial performance. The fact that the Company operates in only one reportable segment is based on the following:

•

The Company uses a highly integrated approach in developing its products in that discrete technologies developed by the Company are frequently integrated across many of its products. Substantially all of the Company’s integrated circuits are manufactured under similar manufacturing processes.

•

The Company’s organizational structure is based along functional lines. Each of the functional department heads reports directly to the CODM. Shared resources in the Company also report directly to the CODM or to a direct report of the CODM.

•

The assessments of performance across the Company, including assessment of the Company’s incentive compensation plan, are based largely on operational performance and consolidated financial performance.

•

The decisions on allocation of resources and other operational decisions are made by the CODM based on his hands-on involvement with the Company’s operations and product development.

The following tables present net revenue and long-lived asset information based on geographic region. Net revenue is based on the destination of the shipments and long-lived assets are based on the physical location of the assets (in thousands):


	Year Ended
Net Revenue:	February 2, 2013		January 28, 2012		January 29, 2011
United States	$	176,581	$	194,638	$	157,259
China		1,599,681		1,496,864		1,209,982
Thailand		369,855		531,073		602,639
Malaysia		351,401		420,382		348,271
Philippines		246,269		207,450		187,156
Others		424,843		542,633		1,106,586

	$	3,168,630	$	3,393,040	$	3,611,893


Property and equipment, net:	February 2, 2013		January 28, 2012
Bermuda	$	5,691	$	8,256
China		37,469		32,205
Israel		36,671		26,061
Singapore		82,358		92,563
United States		208,459		207,848
Others		16,379		16,868

	$	387,027	$	383,801

The following table presents net revenue by end market (in thousands):


	Year Ended
Net Revenue by End Market	February 2, 2013		January 28, 2012		January 29, 2011
Storage products	$	1,494,959	$	1,560,772	$	1,650,465
Mobile and Wireless		822,533		968,706		1,124,442
Networking		708,821		697,865		683,103
Other		142,317		165,697		153,883

	$	3,168,630	$	3,393,040	$	3,611,893

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Related Party Transactions

12 Months Ended

Feb. 02, 2013

Related Party Transactions

Note 14 — Related Party Transactions:

MIL is party to a technology license agreement with VeriSilicon Holdings Co., Ltd. (“VeriSilicon”). MIL assumed this technology license agreement between VeriSilicon and UTStarcom, Inc. after the Company’s acquisition of the semiconductor business of UTStarcom in December 2005. MIL has subsequently entered into various addenda to this agreement for additional technology beyond the scope of the original agreement. During fiscal 2013, MIL entered into two new addenda with VeriSilicon related to the technology license agreement. In addition, in September 2010, MIL entered into a services agreement with VeriSilicon, pursuant to which VeriSilicon has agreed to provide design support services to MIL. Under the services agreement, VeriSilicon helped on three projects for MIL during fiscal 2013. In connection with all of its transactions with VeriSilicon, MIL paid $2.8 million and $1.2 million to VeriSilicon during fiscal 2013 and fiscal 2012, respectively. As of February 2, 2013, the Company had $0.5 million of liability to VeriSilicon. Weili Dai’s brother (and Dr. Sehat Sutardja’s brother-in-law) is the Chairman, President and Chief Executive Officer of VeriSilicon. Ms. Dai is also a shareholder of VeriSilicon. Ms. Dai is a greater than ten percent shareholder of the Company and Dr. Sehat Sutardja is the Company’s President and Chief Executive Officer. Dr. Sehat Sutardja and Ms. Dai are husband and wife.

In December 2009, MIL entered into a technology license agreement with Vivante Corporation (“Vivante”) that provides for the license of graphics technology and associated services. This agreement restates, expands and succeeds previous agreements between the parties for the same technology. In December 2012, the parties renewed this technology license agreement for another three years. The total amount of the license fee was approximately $13.0 million (to be paid over three years) and ten percent for support fees (to be paid over three years). In February 2012, the parties entered into a services agreement, pursuant to which Vivante agreed to provide support services to MIL. In connection with all of its transactions with Vivante, MIL paid $8.6 million and $5.8 million to Vivante during fiscal 2013 and fiscal 2012, respectively. As of February 2, 2013, the Company had $13.8 million of liability to Vivante. Dr. Sehat Sutardja and Ms. Dai, through their ownership and control of Estopia LLC, are indirect shareholders of Vivante. In addition, Dr. Sehat Sutardja is also a direct shareholder and Chairman of the board of directors of Vivante. Ms. Dai’s brother (and Dr. Sehat Sutardja’s brother-in-law) is the Chief Executive Officer of Vivante.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Publisher SEC
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-Number 210
-Section 04
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Supplementary Data (Unaudited)

12 Months Ended

Feb. 02, 2013

Supplementary Data (Unaudited)

MARVELL TECHNOLOGY GROUP LTD.

SUPPLEMENTARY DATA

(Unaudited)

The following table presents the unaudited consolidated statements of operations data for each of the eight quarters in the period ended February 2, 2013. In management’s opinion, this information has been presented on the same basis as the audited consolidated financial statements included in a separate section of this Annual Report on Form 10-K, and all necessary adjustments, consisting only of normal recurring adjustments, have been included in the amounts below to fairly state the unaudited quarterly results when read in conjunction with the audited consolidated financial statements and related notes. The operating results for any period should not be considered indicative of results to be expected in any future period. The Company expects the quarterly operating results to fluctuate in future periods due to a variety of reasons, including those discussed in Part I, Item 1A “Risk Factors.”


	Fiscal 2013
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(In thousands, except per share amounts)
Net revenue	$	796,351	$	816,104	$	780,881	$	775,294
Gross profit	$	430,029	$	434,265	$	406,378	$	404,461
Net income	$	94,543	$	93,074	$	68,816	$	50,152
Net income per share:
Basic	$	0.16	$	0.17	$	0.12	$	0.10
Diluted	$	0.16	$	0.16	$	0.12	$	0.09

	Fiscal 2012
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(In thousands, except per share amounts)
Net revenue	$	802,402	$	897,520	$	950,417	$	742,701
Gross profit	$	467,927	$	519,403	$	538,317	$	401,588
Net income	$	146,861	$	192,392	$	195,121	$	80,717
Net income per share:
Basic	$	0.23	$	0.32	$	0.32	$	0.14
Diluted	$	0.22	$	0.31	$	0.32	$	0.13

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

Schedule II VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Feb. 02, 2013

Schedule II VALUATION AND QUALIFYING ACCOUNTS

Schedule II

VALUATION AND QUALIFYING ACCOUNTS


	Balance at Beginning of Year		Additions		Deductions			Balance at End of Year
	(in thousands)
Fiscal year ended February 2, 2013
Allowance for doubtful accounts and sales return reserve	$	2,663	$	9,024	$	(3,766	)	$	7,921

Deferred tax valuation	$	259,316	$	40,133	$	—		$	299,449


Fiscal year ended January 28, 2012
Allowance for doubtful accounts and sales return reserve	$	7,366	$	4,393	$	(9,096	)	$	2,663

Deferred tax valuation	$	224,853	$	34,694	$	(231	)	$	259,316


Fiscal year ended January 29, 2011
Allowance for doubtful accounts and sales return reserve	$	5,912	$	12,217	$	(10,763	)	$	7,366

Deferred tax valuation	$	197,710	$	30,621	$	(3,478	)	$	224,853

The Company and its Significant Accounting Policies (Policies)

12 Months Ended

Feb. 02, 2013

The Company

The Company

Basis of Presentation

Basis of Presentation

Certain reclassifications have been made to prior period balances in order to conform to the current period’s presentation.

Use of Estimates

Use of Estimates

Principles of Consolidation

Principles of Consolidation

Cash and Cash Equivalents

Cash and Cash Equivalents

Investments

Investments

Impairment of Investments

Impairment of Investments

Derivative Financial Instruments

Derivative Financial Instruments

Concentration of Credit Risk and Significant Customers

Concentration of Credit Risk and Significant Customers

The following table sets forth sales to end customers comprising 10% or more of the Company’s net revenue for the periods indicated:


	Year Ended
Customer	February 2, 2013			January 28, 2012			January 29, 2011
Western Digital		24	%		19	%		21	%
Toshiba		10	%			*			*
Seagate		10	%			*			*
Research in Motion			*			*		14	%

*	Less than 10% of net revenue

In fiscal 2013, Western Digital acquired Hitachi’s HDD unit and in fiscal 2012, Seagate acquired the HDD operations of Samsung.

Inventories

Inventories

Property and Equipment, Net

Property and Equipment, Net

Goodwill

Goodwill

Long-Lived Assets and Intangible Assets

Long-Lived Assets and Intangible Assets

Foreign Currency Transactions

Foreign Currency Transactions

Revenue Recognition

Revenue Recognition

The Company recognizes revenue when there is persuasive evidence of an arrangement, delivery has occurred, the fee is fixed or determinable, and collection is reasonably assured.

Advertising Expense

Advertising Expense

Advertising costs are expensed as incurred.

Stock-Based Compensation

Stock-Based Compensation

The fair value of each restricted stock unit is estimated based on the market price of the Company’s common shares on the date of grant less the expected dividend yield.

Comprehensive Income

Comprehensive Income

Accounting for Income Taxes

Accounting for Income Taxes

Warranty

Warranty

Accounting Pronouncements Recently Adopted

Accounting Pronouncements Recently Adopted

Accounting Pronouncements Not Yet Effective for Fiscal 2013

Accounting Pronouncements Not Yet Effective for Fiscal 2013

The Company and its Significant Accounting Policies (Tables)

12 Months Ended

Feb. 02, 2013

Schedules of Concentration of Risk, by Risk Factor

The following table sets forth sales to end customers comprising 10% or more of the Company’s net revenue for the periods indicated:


	Year Ended
Customer	February 2, 2013			January 28, 2012			January 29, 2011
Western Digital		24	%		19	%		21	%
Toshiba		10	%			*			*
Seagate		10	%			*			*
Research in Motion			*			*		14	%

*	Less than 10% of net revenue

- Definition

Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.

+ References + Details

Business Combinations (Tables)

12 Months Ended

Feb. 02, 2013

Schedule of Purchase Price Allocation

The purchase price of Xelerated was allocated as follows (in thousands):


Accounts receivable	$	2,407
Inventory		6,481
Prepaid and other current assets		111
Property and equipment		441

Tangible assets acquired		9,440
Goodwill		22,324
Intangible assets		51,800

Total assets acquired		83,564
Accounts payable		(256	)
Accrued liabilities		(7,152	)
Deferred tax liability		(1,000	)

Net assets acquired	$	75,156

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination

The acquired intangible assets from Xelerated were recognized as follows based upon their fair value as of the acquisition date (in thousands):


	Fair value		Estimated useful lives
Intangible assets:
Purchased technology	$	25,800		6 years
Customer intangible		24,700		5 years
Trade name		1,300		5 years

Total	$	51,800

Investments (Tables)

12 Months Ended

Feb. 02, 2013

Schedule of Available-for-sale Securities Reconciliation

The following tables summarize the Company’s investments (in thousands):


	As of February 2, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Short-term investments:
Available-for-sale:
Corporate debt securities	$	577,120	$	2,886	$	(382	)	$	579,624
Asset backed securities		76,629		50		(64	)		76,615
Foreign government		4,320		—		(1	)		4,319
U.S. federal and state debt securities		318,226		258		(5	)		318,479
Time deposits		188,000		—		—			188,000

Total short-term investments		1,164,295		3,194		(452	)		1,167,037
Long-term investments:
Available-for-sale:
Auction rate securities		19,450		—		(2,681	)		16,769

Total long-term investments		19,450		—		(2,681	)		16,769

Total investments	$	1,183,745	$	3,194	$	(3,133	)	$	1,183,806


	As of January 28, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Short-term investments:
Available-for-sale:
Corporate debt securities	$	685,563	$	3,081	$	(799	)	$	687,845
Foreign government		2,033		3		—			2,036
U.S. federal and state debt securities		770,298		1,437		(20	)		771,715

Total short-term investments		1,457,894		4,521		(819	)		1,461,596
Long-term investments:
Available-for-sale:
Auction rate securities		24,500		—		(1,285	)		23,215

Total long-term investments		24,500		—		(1,285	)		23,215

Total investments	$	1,482,394	$	4,521	$	(2,104	)	$	1,484,811

Investments Classified by Contractual Maturity Date

The contractual maturities of available-for-sale securities are presented in the following table (in thousands):


	February 2, 2013				January 28, 2012
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year or less	$	519,006	$	519,537	$	641,433	$	642,317
Due between one and five years		627,769		629,991		816,461		819,279
Due over five years		36,970		34,278		24,500		23,215

	$	1,183,745	$	1,183,806	$	1,482,394	$	1,484,811

Unrealized Loss Position Investments


	February 2, 2013
	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Corporate debt securities	$	141,915	$	(382	)	$	—	$	—		$	141,915	$	(382	)
U.S. federal and state debt securities		14,677		(5	)		—		—			14,677		(5	)
Auction rate securities		—		—			16,769		(2,681	)		16,769		(2,681	)
Asset backed securities		43,882		(64	)		—		—			43,882		(64	)
Foreign government		4,319		(1	)		—		—			4,319		(1	)

Total securities	$	204,793	$	(452	)	$	16,769	$	(2,681	)	$	221,562	$	(3,133	)


	January 28, 2012
	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Corporate debt securities	$	146,963	$	(799	)	$	—	$	—		$	146,963	$	(799	)
U.S. federal and state debt securities		107,603		(20	)		—		—			107,603		(20	)
Auction rate securities		—		—			23,215		(1,285	)		23,215		(1,285	)

Total securities	$	254,566	$	(819	)	$	23,215	$	(1,285	)	$	277,781	$	(2,104	)

Supplemental Financial Information (Tables)

12 Months Ended

Feb. 02, 2013

Schedule of Cash and Cash Equivalents


	February 2, 2013		January 28, 2012
Cash and cash equivalents
Cash	$	583,527	$	503,095
Cash equivalents:
Corporate debt securities		—		12,500
Time deposits		119,874		205,060
Money market mutual fund		21,523		64,247
U.S. federal and state debt securities		27,029		—

Total cash and cash equivalents	$	751,953	$	784,902

Schedule of Inventory, Current


	February 2, 2013		January 28, 2012
Inventories:
Work-in-process	$	140,805	$	190,779
Finished goods		109,615		163,340

Inventories	$	250,420	$	354,119

Property, Plant and Equipment


	February 3, 2013			January 28, 2012
Property and equipment, net:
Machinery and equipment	$	532,420		$	489,481
Buildings		144,320			144,320
Computer software		89,548			81,852
Land		69,246			69,246
Building improvements		49,516			42,083
Leasehold improvements		46,205			37,237
Furniture and fixtures		25,301			24,726
Construction in progress		5,333			9,846

		961,889			898,791
Less: Accumulated depreciation and amortization		(574,862	)		(514,990	)

Property and equipment, net	$	387,027		$	383,801

Schedule of Other Assets, Noncurrent


	February 2, 2013		January 28, 2012
Other non-current assets:
Technology and other licenses	$	81,523	$	50,212
Deferred tax assets		26,291		31,064
Deposits		10,451		11,532
Investments in privately held companies		14,486		6,309
Deferred compensation		3,220		5,419
Other		14,858		3,610

Other non-current assets	$	150,829	$	108,146

Schedule of Accrued Liabilities


	February 2, 2013		January 28, 2012
Accrued liabilities:
Accrued rebates	$	51,712	$	24,420
Accrued share repurchases		22,152		—
Accrued legal expense		18,357		13,999
Accrued royalties		12,695		16,896
Technology license obligations		9,865		5,250
Other		29,210		27,090

Accrued liabilities	$	143,991	$	87,655

Other Noncurrent Liabilities


	February 2, 2013		January 28, 2012
Other non-current liabilities:
Technology license obligations	$	34,270	$	—
Long-term accrued employee compensation		6,205		10,059
Other		15,935		22,409

Other non-current liabilities	$	56,410	$	32,468

Schedule of Accumulated Other Comprehensive Income (Loss)


	February 2, 2013			January 28, 2012
Accumulated other comprehensive income:
Unrealized gain on marketable securities	$	2,742		$	3,702
Unrealized loss on auction rate securities		(2,681	)		(1,285	)
Unrealized gain (loss) on cash flow hedges		1,087			(1,641	)

Accumulated other comprehensive income	$	1,148		$	776

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

The computations of basic and diluted net income per share are presented in the following table (in thousands, except per share amounts):


	Year Ended
	February 2, 2013		January 28, 2012		January 29, 2011
Numerator:
Net income:	$	306,585	$	615,091	$	904,129

Denominator:
Weighted average common shares outstanding:		555,310		607,857		648,347
Effect of dilutive securities:
Common share-based awards		7,813		15,411		28,531

Weighted average shares — diluted		563,123		623,268		676,878

Net income per share:
Basic	$	0.55	$	1.01	$	1.39
Diluted	$	0.54	$	0.99	$	1.34


	Year Ended
	February 2, 2013		January 28, 2012		January 29, 2011
Anti-dilutive potential common shares:
Weighted average shares outstanding from stock options		28,124		21,014		12,211

Weighted-average exercise price:	$	17.48	$	18.79	$	21.39

Derivative Financial Instruments (Tables)

12 Months Ended

Feb. 02, 2013

Schedule of Derivative Instruments

The notional amounts of outstanding forward contracts were as follows (in thousands):


	Buy Contracts
	February 2, 2013		January 28, 2012
Israeli shekel	$	38,249	$	42,637

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(2))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959

+ Details

Fair Value Measurements (Tables)

12 Months Ended

Feb. 02, 2013

Fair Value, Assets Measured on Recurring Basis

The tables do not include assets and liabilities that are measured at historical cost or any basis other than fair value (in thousands):


	Level 1		Level 2		Level 3		Portion of Carrying Value Measured at Fair Value at February 2, 2013
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	21,523	$	—	$	—	$	21,523
U.S. federal and state debt securities		27,029		—		—		27,029
Time deposits		—		119,874		—		119,874
Short-term investments:
U.S. federal and state debt securities		318,479		—		—		318,479
Corporate debt securities		—		579,624		—		579,624
Foreign government		—		4,319		—		4,319
Asset backed securities		—		76,615		—		76,615
Time deposits		—		188,000		—		188,000
Prepaid expenses and other current assets:
Forward contracts		—		1,144		—		1,144
Long-term investments:
Auction rate securities		—		—		16,769		16,769
Other non-current assets:
Severance pay fund		—		1,977		—		1,977

Total assets	$	367,031	$	971,553	$	16,769	$	1,355,353


	Level 1		Level 2		Level 3		Portion of Carrying Value Measured at Fair Value at January 28, 2012
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	64,247	$	—	$	—	$	64,247
Corporate debt securities		—		12,500		—		12,500
Time deposits		—		205,060		—		205,060
Short-term investments:
U.S. federal and state debt securities		771,715		—		—		771,715
Corporate debt securities		—		687,845		—		687,845
Foreign government		—		2,036		—		2,036
Long-term investments:
Auction rate securities		—		—		23,215		23,215
Other non-current assets:
Severance pay fund		—		1,734		—		1,734

Total assets	$	835,962	$	909,175	$	23,215	$	1,768,352

Liabilities
Accrued liabilities:
Forward contracts	$	—	$	1,520	$	—	$	1,520

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The following table summarizes the change in fair values for Level 3 assets for the year ended February 2, 2013 and January 28, 2012 (in thousands):


	Level 3
Changes in fair value during the year (pre-tax):
Beginning balance at January 29, 2011	$	26,226
Purchases		—
Sales, redemption and settlement		(3,350	)
Realized loss on sale		—
Unrealized gain included in accumulated other comprehensive income		339

Ending balance at January 28, 2012		23,215
Purchases		—
Sales, redemption and settlement		(5,050	)
Realized loss on sale		—
Unrealized loss included in accumulated other comprehensive income		(1,396	)

Ending balance at February 2, 2013	$	16,769

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References + Details

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References + Details

Goodwill and Acquired Intangible Assets (Tables)

12 Months Ended

Feb. 02, 2013

Schedule of Goodwill

The following table summarizes the activity related to the carrying value of goodwill (in thousands):


Balance at January 29, 2011	$	2,004,833
Additions due to business combinations		27,158

Balance at January 28, 2012		2,031,991
Additions due to business combinations		147

Balance at February 2, 2013	$	2,032,138

Schedule of Finite-Lived Intangible Assets by Major Class

The carrying amounts of acquired intangible assets are as follows (in thousands):


			February 2, 2013							January 28, 2012
	Range of Useful Lives		Gross Carrying Amounts		Accumulated Amortization and Write-Offs			Net Carrying Amount		Gross Carrying Amounts		Accumulated Amortization and Write-Offs			Net Carrying Amount
Purchased technology		4 - 7 years	$	54,690	$	(18,552	)	$	36,138	$	103,490	$	(50,906	)	$	52,584
Core technology		5 - 8 years		138,650		(123,298	)		15,352		178,000		(142,932	)		35,068
Trade names		5 years		1,300		(308	)		992		1,500		(232	)		1,268
Customer intangibles		5 - 7 years		89,400		(61,927	)		27,473		89,900		(47,856	)		42,044
IPR&D		*		9,700		—			9,700		10,541		—			10,541

Total intangible assets, net			$	293,740	$	(204,085	)	$	89,655	$	383,431	$	(241,926	)	$	141,505

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense


Fiscal Year
2014	$	35,778
2015		14,942
2016		12,203
2017		11,018
2018		5,590
Thereafter		424

	$	79,955

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References + Details

Restructuring (Tables)

12 Months Ended

Feb. 02, 2013

Schedule of Restructuring Reserve by Type of Cost

The following table presents details of restructuring charges by functional line item (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012		January 29, 2011
Research and development	$	47		$	728	$	1,966
Selling and marketing		(3	)		8		—
General and administrative		1,213			1,120		1,217

	$	1,257		$	1,856	$	3,183

Schedule of Restructuring and Related Costs

The following table sets forth a summary of the activity in the accrued liability for the years ended (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Restructuring liabilities, beginning of period	$	2,917		$	3,306		$	5,397
Facilities and related charges		553			1,619			3,420
Equipment and other related charges		—			237			94
Non-cash adjustment		10			(506	)		(1,272	)
Net cash payments		(1,329	)		(1,739	)		(4,002	)
Adjustments to previous assumptions		704			—			(331	)

Restructuring liabilities, end of period	$	2,855		$	2,917		$	3,306

Income Taxes (Tables)

12 Months Ended

Feb. 02, 2013

Schedule Of US and non US Components of Income Before Income Tax Expense (Benefit)

The U.S. and non-U.S. components of income before income taxes consist of the following (in thousands):


	Year Ended
	February 2, 2013		January 28, 2012		January 29, 2011
U.S. operations	$	34,900	$	28,039	$	22,647
Non-U.S. operations		275,290		591,020		887,815

	$	310,190	$	619,059	$	910,462

Schedule of Components of Income Tax Expense (Benefit)

The provision for income taxes consists of the following (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Current income tax expense (benefit):
Federal	$	4,461		$	8,183		$	1,111
State		407			99			49
Foreign		(8,289	)		(1,069	)		3,282

Total current income tax expense (benefit)		(3,421	)		7,213			4,442

Deferred income tax expense (benefit):
Federal		6,306			(1,361	)		7,025
State		90			1,078			3,037
Foreign		630			(2,962	)		(8,171	)

Total deferred income tax expense (benefit)		7,026			(3,245	)		1,891

Total provision for income taxes	$	3,605		$	3,968		$	6,333

Schedule of Deferred Tax Assets and Liabilities

Deferred tax assets consist of the following (in thousands):


	February 2, 2013			January 28, 2012
Deferred tax assets:
Federal and California research and other tax credits	$	299,475		$	259,635
Reserves and accruals		27,830			32,328
Stock compensation		3,523			2,678
Net operating losses		20,553			21,813

Gross deferred tax assets		351,381			316,454
Valuation allowance		(299,449	)		(259,316	)

Total deferred tax assets		51,932			57,138
Total deferred tax liabilities		(17,225	)		(15,405	)

Net deferred tax assets	$	34,707		$	41,733

Reconciliation Of United States Statutory Federal Tax Rate

Reconciliation of the statutory federal income tax to the Company’s effective tax:


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Provision at U.S. notional statutory rate		35.0	%		35.0	%		35.0	%
Non-deductible stock-based compensation		15.4			6.9			5.6
Difference in U.S. and non-U.S. tax rates		(48.8	)		(40.7	)		(40.0	)
Benefits from utilization of general business credits		(13.8	)		(6.8	)		(3.7	)
Change in valuation allowance		12.9			5.6			3.4
Other		0.5			0.6			0.4

Effective tax rate		1.2	%		0.6	%		0.7	%

Unrecognized Tax Benefits Reconciliation

The following table reflects changes in the unrecognized tax benefits (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Unrecognized tax benefits as the beginning of the period	$	96,294		$	102,612		$	103,334
Increases related to prior year tax positions		1,106			987			494
Decreases related to prior year tax positions		—			(307	)		(149	)
Increases related to current year tax positions		1,139			1,229			1,317
Settlements		(3,956	)		(243	)		—
Lapse in the statute of limitations		(15,543	)		(9,529	)		(10,293	)
Foreign exchange (gain) loss		(9	)		1,545			7,909

Gross amounts of unrecognized tax benefits as of the end of the period	$	79,031		$	96,294		$	102,612

Commitments and Contingencies (Tables)

12 Months Ended

Feb. 02, 2013

Schedule of Product Warranty Liability

The following table presents changes in the warranty accrual included in accrued liabilities in the Company’s consolidated balance sheets (in thousands):


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Beginning balance	$	2,354		$	2,439		$	1,965
Warranty expense		679			1,126			2,291
Acquisitions		—			408			—
Payments and other charges		(1,097	)		(1,619	)		(1,817	)

Ending balance	$	1,936		$	2,354		$	2,439

Operating Leases of Lessee Disclosure

Future minimum lease payments, net of estimated sublease, and payments under technology license obligations as of February 2, 2013, are presented in the following tables (in thousands):


Fiscal Year:	Minimum Lease Payments		Sublease Income			Net Operating Leases
2014	$	48,751	$	(215	)	$	48,536
2015		43,704		(72	)		43,632
2016		26,882		(75	)		26,807
2017		6,677		(46	)		6,631
2018		1,453		—			1,453
Thereafter		2,936		—			2,936

Total future minimum lease payments	$	130,403	$	(408	)	$	129,995

Future Minimum Lease Payments Under Technology License Obligations


Fiscal Year:	Technology License Obligations
2014	$	9,351
2015		9,579
2016		9,807
2017		7,869
2018		9,180
Thereafter		—

Total future minimum lease payments	$	45,786

Less: amount representing interest		(3,094	)

Present value of future minimum payments		42,692
Less: current portion		(8,422	)

Non-current portion	$	34,270

- Definition

Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

+ References + Details

Shareholders' Equity (Tables)

12 Months Ended

Feb. 02, 2013

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

The following table summarizes the activity under all of the option plans and other stock based arrangements (in thousands, except for per share amounts):


	Time-Based Options					Market-Based Options					Total
	Options Outstanding			Weighted Average Exercise Price		Options Outstanding			Weighted Average Exercise Price		Options Outstanding			Weighted Average Exercise Price
Balance at January 30, 2010		70,966		$	11.28		—			—		70,966		$	11.28
Granted		2,018		$	20.17		—			—		2,018		$	20.17
Exercised		(13,959	)	$	8.45		—			—		(13,959	)	$	8.45
Canceled/Forfeited		(2,700	)	$	18.47		—			—		(2,700	)	$	18.47
Expired		—			—		—			—		—			—

Balance at January 29, 2011		56,325		$	11.96		—			—		56,325		$	11.96
Granted		3,477		$	15.31		3,149		$	15.43		6,626		$	15.37
Exercised		(5,681	)	$	7.95		—			—		(5,681	)	$	7.95
Canceled/Forfeited		(1,654	)	$	14.57		(25	)	$	15.43		(1,679	)	$	14.58
Expired		—			—		—			—		—			—

Balance at January 28, 2012		52,467		$	12.53		3,124		$	15.43		55,591		$	12.70
Granted		7,041		$	14.59		—			—		7,041		$	14.59
Exercised		(5,977	)	$	6.44		—			—		(5,977	)	$	6.44
Canceled/Forfeited		(3,894	)	$	16.10		(365	)	$	15.43		(4,259	)	$	16.04
Expired		—			—		—			—		—			—

Balance at February 2, 2013		49,637		$	13.28		2,759		$	15.43		52,396		$	13.39

Vested or expected to vest at February 2, 2013		48,584		$	13.25

Exercisable at February 2, 2013		39,789		$	12.91

Schedule of Nonvested Share Activity

Included in the following table is activity related to the non-vested portion of the restricted stock units as follows (in thousands, except for share prices):


	Restricted Stock Outstanding			Weighted Average Grant Date Fair Value
Balance at January 30, 2010		2,746		$	8.99
Granted		4,718		$	20.76
Vested		(1,619	)	$	9.13
Canceled/Forfeited		(359	)	$	13.87

Balance at January 29, 2011		5,486		$	18.75
Granted		6,877		$	15.80
Vested		(2,014	)	$	15.90
Canceled/Forfeited		(703	)	$	16.81

Balance at January 28, 2012		9,646		$	17.38
Granted		7,370		$	14.64
Vested		(2,796	)	$	17.78
Canceled/Forfeited		(1,481	)	$	17.16

Balance at February 2, 2013		12,739		$	15.78

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The following table presents details of share-based compensation expenses by functional line item (in thousands):


	Year Ended
	February 2, 2013		January 28, 2012		January 29, 2011
Cost of goods sold	$	8,142	$	6,995	$	7,522
Research and development		87,149		85,924		82,524
Selling and marketing		13,278		12,920		11,769
General and administrative		18,711		14,024		16,590

	$	127,280	$	119,863	$	118,405

Employee Stock Purchase Plan

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Employee Stock Purchase Plan:
Estimated fair value	$	3.13		$	4.63		$	5.91
Volatility		40	%		44	%		53	%
Expected term (in years)		1.2			1.1			0.5
Risk-free interest rate		0.2	%		0.1	%		0.2	%
Dividend yield		2.4	%		—			—

Time Based Option Award

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions


	Year Ended
	February 2, 2013			January 28, 2012			January 29, 2011
Time-based Stock Options:
Weighted average fair value	$	5.52		$	6.05		$	9.33
Expected volatility		44	%		44	%		53	%
Expected term (in years)		4.8			4.8			4.7
Risk-free interest rate		0.9	%		2.0	%		2.2	%
Expected dividend yield		0.3	%		—			—

Market Based Option Award

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions


	Year Ended
	February 2, 2013			January 28, 2012
Market-based Stock Options:
Weighted average fair value	$	—		$	5.08
Expected volatility		—	%		42	%
Risk-free interest rate		—	%		0.9 - 3.6	%

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

+ References + Details

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

+ References + Details

Segment and Geographic Information (Tables)

12 Months Ended

Feb. 02, 2013

Schedule Of Revenues From External Customers And Long Lived Assets By Geographical Areas


	Year Ended
Net Revenue:	February 2, 2013		January 28, 2012		January 29, 2011
United States	$	176,581	$	194,638	$	157,259
China		1,599,681		1,496,864		1,209,982
Thailand		369,855		531,073		602,639
Malaysia		351,401		420,382		348,271
Philippines		246,269		207,450		187,156
Others		424,843		542,633		1,106,586

	$	3,168,630	$	3,393,040	$	3,611,893


Property and equipment, net:	February 2, 2013		January 28, 2012
Bermuda	$	5,691	$	8,256
China		37,469		32,205
Israel		36,671		26,061
Singapore		82,358		92,563
United States		208,459		207,848
Others		16,379		16,868

	$	387,027	$	383,801

Revenue from External Customers by Products and Services

The following table presents net revenue by end market (in thousands):


	Year Ended
Net Revenue by End Market	February 2, 2013		January 28, 2012		January 29, 2011
Storage products	$	1,494,959	$	1,560,772	$	1,650,465
Mobile and Wireless		822,533		968,706		1,124,442
Networking		708,821		697,865		683,103
Other		142,317		165,697		153,883

	$	3,168,630	$	3,393,040	$	3,611,893

Supplementary Data (Unaudited) (Tables)

12 Months Ended

Feb. 02, 2013

Schedule of Quarterly Financial Information


	Fiscal 2013
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(In thousands, except per share amounts)
Net revenue	$	796,351	$	816,104	$	780,881	$	775,294
Gross profit	$	430,029	$	434,265	$	406,378	$	404,461
Net income	$	94,543	$	93,074	$	68,816	$	50,152
Net income per share:
Basic	$	0.16	$	0.17	$	0.12	$	0.10
Diluted	$	0.16	$	0.16	$	0.12	$	0.09

	Fiscal 2012
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(In thousands, except per share amounts)
Net revenue	$	802,402	$	897,520	$	950,417	$	742,701
Gross profit	$	467,927	$	519,403	$	538,317	$	401,588
Net income	$	146,861	$	192,392	$	195,121	$	80,717
Net income per share:
Basic	$	0.23	$	0.32	$	0.32	$	0.14
Diluted	$	0.22	$	0.31	$	0.32	$	0.13

The Company and Its Significant Accounting Policies - Additional Information (Detail) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 02, 2013 USD ($)	Feb. 02, 2013 USD ($) Entity Customer	Feb. 28, 2012	Jan. 28, 2012 USD ($) Entity Customer	Jan. 29, 2011 Entity
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 1.0	$ 1.0		$ 1.3
Number of major customers \| Customer		2		3
Number of distributors with more than 10% revenue \| Entity		1		1
Step-up fair market value adjustments to inventory acquired in acquisitions				$ 4.4
Inventory turnover period, minimum (in days)		60 days
Inventory turnover period, maximum (in days)		90 days
Minimum likelihood that uncertain tax position will be sustained as a result of examination by income tax audits		50.00%
Standard Product Warranty Time Period		90 days
Core technology \| Maximum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		8 years
Core technology \| Minimum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		5 years
Customer intangibles \| Maximum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		7 years
Customer intangibles \| Minimum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		5 years
Trade names
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		5 years
Credit Concentration Risk \| Accounts Receivable \| Customer A
Significant Accounting Policies [Line Items]
Concentration of risk percentage		19.00%		15.00%
Credit Concentration Risk \| Accounts Receivable \| Customer B
Significant Accounting Policies [Line Items]
Concentration of risk percentage		15.00%		12.00%
Credit Concentration Risk \| Accounts Receivable \| Customer C
Significant Accounting Policies [Line Items]
Concentration of risk percentage				11.00%
Typical Cases
Significant Accounting Policies [Line Items]
Standard Product Warranty Time Period		90 days
Non-Typical Cases \| Minimum
Significant Accounting Policies [Line Items]
Standard Product Warranty Time Period		1 year
Annual Grant
Significant Accounting Policies [Line Items]
Stock-based compensation, vest term (in years)		4 years
New Hire
Significant Accounting Policies [Line Items]
Stock-based compensation, vest term (in years)		5 years
Intangible Assets, Amortization Period \| Developed Technology Rights \| Maximum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		7 years
Intangible Assets, Amortization Period \| Developed Technology Rights \| Minimum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		4 years
Intangible Assets, Amortization Period \| Core technology \| Maximum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		8 years
Intangible Assets, Amortization Period \| Core technology \| Minimum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		5 years
Intangible Assets, Amortization Period \| Customer intangibles \| Maximum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		7 years
Intangible Assets, Amortization Period \| Customer intangibles \| Minimum
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		5 years
Intangible Assets, Amortization Period \| Trade names
Significant Accounting Policies [Line Items]
Intangible assets, estimated economic lives (in years)		5 years
Buildings
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives (in years)			30 years
Building Improvements
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives (in years)			15 years
Machinery and Equipment \| Maximum
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives (in years)			7 years
Machinery and Equipment \| Minimum
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives (in years)			3 years
Computer Software, Intangible Asset \| Maximum
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives (in years)			7 years
Computer Software, Intangible Asset \| Minimum
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives (in years)			3 years
Furniture and Fixtures \| Maximum
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives (in years)			7 years
Furniture and Fixtures \| Minimum
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful lives (in years)			3 years
Cash equivalents \| Maximum
Significant Accounting Policies [Line Items]
Maturity period to classify investments	3 months
Short-term Investments \| Maximum
Significant Accounting Policies [Line Items]
Maturity period to classify investments	1 year
Short-term Investments \| Minimum
Significant Accounting Policies [Line Items]
Maturity period to classify investments	90 days

Sales to End Customers Comprising 10% or More of Net Revenue (Detail) - Customer Concentration Risk

12 Months Ended

Feb. 02, 2013

Jan. 28, 2012

Jan. 29, 2011

Western Digital

Concentration Risk [Line Items]

Concentration of risk percentage

24.00%

19.00%

21.00%

Toshiba

Concentration Risk [Line Items]

Concentration of risk percentage

10.00%

^[1]

Seagate

Concentration Risk [Line Items]

Concentration of risk percentage

10.00%

^[1]

Research in Motion

Concentration Risk [Line Items]

Concentration of risk percentage

^[1]

14.00%

[1]	Less than 10% of net revenue

Business Combinations - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jan. 28, 2012	Feb. 02, 2013	Dec. 31, 2011	Apr. 30, 2011	Dec. 31, 2010	Jul. 31, 2010
Xelerated Ab
Business Acquisition [Line Items]
Business acquisition purchase price			$ 75,200
Business acquisition purchase price allocation, goodwill			22,324
Fair value of acquired intangible assets		$ 51,800
Business acquisition purchase price allocation, tangible assets			9,440
Business acquisition purchase price allocation, amortizable intangible assets			$ 51,800
Xelerated Ab \| Purchased technology
Business Acquisition [Line Items]
Fair value of acquired intangible assets		25,800
Xelerated Ab \| Trade names
Business Acquisition [Line Items]
Fair value of acquired intangible assets		1,300
Xelerated Ab \| Retention bonuses
Business Acquisition [Line Items]
Business acquisition, additional contingent consideration	$ 4,300
Business acquisition, additional contingent consideration, payable term	2 years
Xelerated Ab \| Maximum
Business Acquisition [Line Items]
Business acquisition, additional contingent consideration		$ 5,000
Ethernet physical-layer transceivers ("PHY")
Business Acquisition [Line Items]
Business acquisition purchase price				$ 16,300
Business acquisition purchase price allocation, goodwill				1,600
Business acquisition purchase price allocation, tangible assets				1,100
Business acquisition purchase price allocation, intangible assets				$ 13,600
Mobile software consulting firm specializing in user interface application software
Business Acquisition [Line Items]
Business acquisition purchase price					$ 11,800
Business acquisition purchase price allocation, goodwill					4,300
Business acquisition, additional contingent consideration					9,300
Business acquisition purchase price allocation, amortizable intangible assets					$ 7,500
Company engaged in development of powerline communication for home networking and broadband over powerline applications
Business Acquisition [Line Items]
Business acquisition purchase price						$ 20,700
Business acquisition purchase price allocation, goodwill						2,900
Business acquisition purchase price allocation, tangible assets						300
Business acquisition purchase price allocation, amortizable intangible assets						7,800
Business acquisition purchase price allocation, IPR&D						$ 9,700

Purchase Price Consideration of Xelerated (Detail) - Xelerated Ab $ in Thousands	Dec. 31, 2011 USD ($)
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Accounts receivable	$ 2,407
Inventory	6,481
Prepaid and other current assets	111
Property and equipment	441
Tangible assets acquired	9,440
Goodwill	22,324
Intangible assets	51,800
Total assets acquired	83,564
Accounts payable	(256)
Accrued liabilities	(7,152)
Deferred tax liability	(1,000)
Net assets acquired	$ 75,156

Recognized Acquired Intangible Assets for Xelerated Based Upon Fair Value as of Acquisition Date (Detail) $ in Thousands	12 Months Ended
	Feb. 02, 2013 USD ($)
Trade names
Business Acquisition [Line Items]
Estimated useful lives	5 years
Xelerated Ab
Business Acquisition [Line Items]
Fair value	$ 51,800
Xelerated Ab \| Purchased technology
Business Acquisition [Line Items]
Fair value	$ 25,800
Estimated useful lives	6 years
Xelerated Ab \| Customer intangible
Business Acquisition [Line Items]
Fair value	$ 24,700
Estimated useful lives	5 years
Xelerated Ab \| Trade names
Business Acquisition [Line Items]
Fair value	$ 1,300
Estimated useful lives	5 years

Summary of Investments (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Gain (Loss) on Investments [Line Items]
Estimated Fair Value	$ 1,183,806	$ 1,484,811
Short-term Investments
Gain (Loss) on Investments [Line Items]
Amortized Cost	1,164,295	1,457,894
Gross Unrealized Gains	3,194	4,521
Gross Unrealized Losses	(452)	(819)
Estimated Fair Value	1,167,037	1,461,596
Short-term Investments \| Available-for-sale \| Corporate debt securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	577,120	685,563
Gross Unrealized Gains	2,886	3,081
Gross Unrealized Losses	(382)	(799)
Estimated Fair Value	579,624	687,845
Short-term Investments \| Available-for-sale \| Asset-backed Securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	76,629
Gross Unrealized Gains	50
Gross Unrealized Losses	(64)
Estimated Fair Value	76,615
Short-term Investments \| Available-for-sale \| Foreign Government
Gain (Loss) on Investments [Line Items]
Amortized Cost	4,320	2,033
Gross Unrealized Gains		3
Gross Unrealized Losses	(1)
Estimated Fair Value	4,319	2,036
Short-term Investments \| Available-for-sale \| U.S. federal and state debt securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	318,226	770,298
Gross Unrealized Gains	258	1,437
Gross Unrealized Losses	(5)	(20)
Estimated Fair Value	318,479	771,715
Short-term Investments \| Available-for-sale \| Time Deposits
Gain (Loss) on Investments [Line Items]
Amortized Cost	188,000
Estimated Fair Value	188,000
Long-term investments
Gain (Loss) on Investments [Line Items]
Amortized Cost	19,450	24,500
Gross Unrealized Losses	(2,681)	(1,285)
Estimated Fair Value	16,769	23,215
Long-term investments \| Auction rate securities
Gain (Loss) on Investments [Line Items]
Gross Unrealized Losses	(2,700)
Long-term investments \| Available-for-sale \| Auction rate securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	19,450	24,500
Gross Unrealized Losses	(2,681)	(1,285)
Estimated Fair Value	16,769	23,215
Investments
Gain (Loss) on Investments [Line Items]
Amortized Cost	1,183,745	1,482,394
Gross Unrealized Gains	3,194	4,521
Gross Unrealized Losses	(3,133)	(2,104)
Estimated Fair Value	$ 1,183,806	$ 1,484,811

Investments - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Gain (Loss) on Investments [Line Items]
Cash, cash equivalents and short-term investments	$ 1,900,000
Available-for-sale securities, gross realized gain	3,600	$ 2,400	$ 600
Available-for-sale securities, gross realized loss	300	1,000	$ 200
Long-term investments
Gain (Loss) on Investments [Line Items]
Gross Unrealized Losses	2,681	$ 1,285
Long-term investments \| Auction rate securities
Gain (Loss) on Investments [Line Items]
Par value of auction rate securities	19,500
Gross Unrealized Losses	$ 2,700

- Definition

Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

+ References + Details

Contractual Maturities of Available for Sale Securities (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Amortized Cost
Due in one year or less	$ 519,006	$ 641,433
Due between one and five years	627,769	816,461
Due over five years	36,970	24,500
Marketable Securities, Debt Maturities, Amortized Cost, Total	1,183,745	1,482,394
Estimated Fair Value
Due in one year or less	519,537	642,317
Due between one and five years	629,991	819,279
Due over five years	34,278	23,215
Estimated Fair Value	$ 1,183,806	$ 1,484,811

Summary of Investments Gross Unrealized Losses and Fair Value (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	$ 204,793	$ 254,566
Less than 12 months Unrealized Losses	(452)	(819)
12 months or more Fair Value	16,769	23,215
12 months or more Unrealized Losses	(2,681)	(1,285)
Total Fair Value	221,562	277,781
Total Unrealized Losses	(3,133)	(2,104)
Corporate debt securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	141,915	146,963
Less than 12 months Unrealized Losses	(382)	(799)
Total Fair Value	141,915	146,963
Total Unrealized Losses	(382)	(799)
U.S. federal and state debt securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	14,677	107,603
Less than 12 months Unrealized Losses	(5)	(20)
Total Fair Value	14,677	107,603
Total Unrealized Losses	(5)	(20)
Auction rate securities
Investments, Unrealized Loss Position [Line Items]
12 months or more Fair Value	16,769	23,215
12 months or more Unrealized Losses	(2,681)	(1,285)
Total Fair Value	16,769	23,215
Total Unrealized Losses	(2,681)	$ (1,285)
Asset-backed Securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	43,882
Less than 12 months Unrealized Losses	(64)
Total Fair Value	43,882
Total Unrealized Losses	(64)
Foreign Government
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	4,319
Less than 12 months Unrealized Losses	(1)
Total Fair Value	4,319
Total Unrealized Losses	$ (1)

Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010
Cash, cash equivalents and marketable securities [Line Items]
Cash	$ 583,527	$ 503,095
Cash equivalents:
Corporate debt securities		12,500
Time deposits	119,874	205,060
Money market mutual fund	21,523	64,247
U.S. federal and state debt securities	27,029
Total cash and cash equivalents	$ 751,953	$ 784,902	$ 1,847,074	$ 1,105,428

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6676-107765

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3044-108585

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 1
-Article 5

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7, 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7
-Footnote 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 8, 9
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Any certificate of deposit or savings account held by a bank or other financial institution for a short-term specified period of time. Because of their short-term, time deposits are considered highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

+ References + Details

- Definition

Debt securities issued by a United States government agency such as Government National Mortgage Association (Ginnie Mae), Federal Home Loan Mortgage Corporation (Freddie Mac), and Federal National Mortgage Association (Fannie Mae), which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

+ References + Details

Inventories (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Schedule of Inventory [Line Items]
Work-in-process	$ 140,805	$ 190,779
Finished goods	109,615	163,340
Inventories	$ 250,420	$ 354,119

Property and Equipment Net (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 532,420	$ 489,481
Buildings	144,320	144,320
Computer software	89,548	81,852
Land	69,246	69,246
Building improvements	49,516	42,083
Leasehold improvements	46,205	37,237
Furniture and fixtures	25,301	24,726
Construction in progress	5,333	9,846
Property, Plant and Equipment, Gross, Total	961,889	898,791
Less: Accumulated depreciation and amortization	(574,862)	(514,990)
Property and equipment, net	$ 387,027	$ 383,801

Supplemental Financial Information - Additional Information (Detail) - USD ($) $ in Thousands, shares in Millions	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Computation Of Earnings Per Share Line Items
Depreciation expense	$ 70,700	$ 63,500	$ 72,200
Amortization expense	52,700	$ 49,357	$ 79,538
Share repurchase program, amount repurchased	$ 22,152
Market Based Option Award
Computation Of Earnings Per Share Line Items
Anti-dilutive options excluded from the computation of diluted net income per share	3.0	3.0	3.1
Technology and Other Licenses
Computation Of Earnings Per Share Line Items
Amortization expense	$ 20,300	$ 24,900	$ 21,000

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Other Non Current Assets (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Technology and other licenses	$ 81,523	$ 50,212
Deferred tax assets	26,291	31,064
Deposits	10,451	11,532
Investments in privately held companies	14,486	6,309
Deferred compensation	3,220	5,419
Other	14,858	3,610
Other non-current assets	$ 150,829	$ 108,146

- Definition

This item represents the aggregate carrying amount of all cost-method investments as reported on or included in the balance sheet. The original cost of the investments may differ from the aggregate carrying amount disclosed due to various adjustments such as: (i) dividends received in excess of earnings after the date of investment that are considered a return of investment and therefore recorded as reductions to cost of the investment, or (ii) a series of operating losses of an investee or other factors which may indicate that a decrease in value of the investment has occurred which is other than temporary and accordingly such decrease in value has been recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 20
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6383889&loc=d3e40346-111594

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 18
-Paragraph 6
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 18
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-1
-Paragraph 22
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

+ References + Details

Accrued Liabilities (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Schedule of Accrued Liabilities [Line Items]
Accrued rebates	$ 51,712	$ 24,420
Accrued share repurchases	22,152
Accrued legal expense	18,357	13,999
Accrued royalties	12,695	16,896
Technology license obligations	9,865	5,250
Other	29,210	27,090
Accrued liabilities	$ 143,991	$ 87,655

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References + Details

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References + Details

Other Long Term Liabilities (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Schedule of Other Liabilities [Line Items]
Technology license obligations	$ 34,270
Long-term accrued employee compensation	6,205	$ 10,059
Other	15,935	22,409
Other non-current liabilities	$ 56,410	$ 32,468

Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized gain on marketable securities	$ 2,742	$ 3,702
Unrealized loss on auction rate securities	(2,681)	(1,285)
Unrealized gain (loss) on cash flow hedges	1,087	(1,641)
Accumulated other comprehensive income	$ 1,148	$ 776

- Definition

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

+ References + Details

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e637-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e681-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 31
-Article 5

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 14, 17, 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Computations of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Numerator:
Net income:	$ 50,152	$ 68,816	$ 93,074	$ 94,543	$ 80,717	$ 195,121	$ 192,392	$ 146,861	$ 306,585	$ 615,091	$ 904,129
Denominator:
Weighted average common shares outstanding:									555,310	607,857	648,347
Effect of dilutive securities:
Common share-based awards									7,813	15,411	28,531
Weighted average shares - diluted									563,123	623,268	676,878
Net income per share:
Basic	$ 0.10	$ 0.12	$ 0.17	$ 0.16	$ 0.14	$ 0.32	$ 0.32	$ 0.23	$ 0.55	$ 1.01	$ 1.39
Diluted	$ 0.09	$ 0.12	$ 0.16	$ 0.16	$ 0.13	$ 0.32	$ 0.31	$ 0.22	$ 0.54	$ 0.99	$ 1.34
Stock Options
Net income per share:
Weighted average shares outstanding from stock options									28,124	21,014	12,211
Weighted-average exercise price:									$ 17.48	$ 18.79	$ 21.39

Notional Amounts of Outstanding Forward Contracts (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Foreign Exchange Contract \| Israeli shekel
Derivative [Line Items]
Buy Contracts	$ 38,249	$ 42,637

Fair Value Measurements - Additional Information (Detail)	Feb. 02, 2013
Fair Value, Measurement Inputs, Disclosure [Line Items]
Percentage of total amount of assets measured using Level 3 valuation methodologies to total assets	0.30%

Financial Assets that were Accounted for at Fair Value (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Assets
Total assets	$ 1,355,353	$ 1,768,352
Cash equivalents \| Money market funds
Assets
Cash equivalents	21,523	64,247
Cash equivalents \| U.S. federal and state debt securities
Assets
Cash equivalents	27,029
Cash equivalents \| Corporate debt securities
Assets
Cash equivalents		12,500
Cash equivalents \| Time deposits
Assets
Cash equivalents	119,874	205,060
Short-term Investments \| U.S. federal and state debt securities
Assets
Investments	318,479	771,715
Short-term Investments \| Corporate debt securities
Assets
Investments	579,624	687,845
Short-term Investments \| Foreign Government
Assets
Investments	4,319	2,036
Short-term Investments \| Asset-backed Securities
Assets
Investments	76,615
Short-term Investments \| Time deposits
Assets
Investments	188,000
Prepaid expenses and other current assets \| Forward contracts
Assets
Prepaid expenses and other current assets	1,144
Long-term investments \| Auction rate securities
Assets
Investments	16,769	23,215
Other non-current assets \| Severance Pay Fund
Assets
Other non-current asset	1,977	1,734
Accrued Liabilities \| Forward contracts
Liabilities
Forward contracts		1,520
Level 1
Assets
Total assets	367,031	835,962
Level 1 \| Cash equivalents \| Money market funds
Assets
Cash equivalents	21,523	64,247
Level 1 \| Cash equivalents \| U.S. federal and state debt securities
Assets
Cash equivalents	27,029
Level 1 \| Short-term Investments \| U.S. federal and state debt securities
Assets
Investments	318,479	771,715
Level 2
Assets
Total assets	971,553	909,175
Level 2 \| Cash equivalents \| Corporate debt securities
Assets
Cash equivalents		12,500
Level 2 \| Cash equivalents \| Time deposits
Assets
Cash equivalents	119,874	205,060
Level 2 \| Short-term Investments \| Corporate debt securities
Assets
Investments	579,624	687,845
Level 2 \| Short-term Investments \| Foreign Government
Assets
Investments	4,319	2,036
Level 2 \| Short-term Investments \| Asset-backed Securities
Assets
Investments	76,615
Level 2 \| Short-term Investments \| Time deposits
Assets
Investments	188,000
Level 2 \| Prepaid expenses and other current assets \| Forward contracts
Assets
Prepaid expenses and other current assets	1,144
Level 2 \| Other non-current assets \| Severance Pay Fund
Assets
Other non-current asset	1,977	1,734
Level 2 \| Accrued Liabilities \| Forward contracts
Liabilities
Forward contracts		1,520
Level 3
Assets
Total assets	16,769	23,215
Level 3 \| Long-term investments \| Auction rate securities
Assets
Investments	$ 16,769	$ 23,215

Summary of the Change in Fair Values for Level 3 Items (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 23,215	$ 26,226
Purchases
Sales, redemption and settlement	(5,050)	(3,350)
Realized loss on sale
Unrealized gain loss included in accumulated other comprehensive income	(1,396)	339
Ending Balance	$ 16,769	$ 23,215

Carrying Value of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012
Goodwill [Line Items]
Beginning balance	$ 2,031,991	$ 2,004,833
Additions due to business combinations	147	27,158
Ending balance	$ 2,032,138	$ 2,031,991

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Acquired Intangible Assets Net (Detail) - USD ($)
$ in Thousands

12 Months Ended

Feb. 02, 2013

Jan. 28, 2012

Acquired Finite-Lived Intangible Assets [Line Items]

Gross Carrying Amounts

$ 293,740

$ 383,431

Accumulated Amortization and Write-Offs

(204,085)

(241,926)

Net Carrying Amount

89,655

141,505

Purchased technology

Acquired Finite-Lived Intangible Assets [Line Items]

Gross Carrying Amounts

54,690

103,490

Accumulated Amortization and Write-Offs

(18,552)

(50,906)

Net Carrying Amount

36,138

52,584

Core technology

Acquired Finite-Lived Intangible Assets [Line Items]

Gross Carrying Amounts

138,650

178,000

Accumulated Amortization and Write-Offs

(123,298)

(142,932)

Net Carrying Amount

$ 15,352

35,068

Trade names

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

5 years

Gross Carrying Amounts

$ 1,300

1,500

Accumulated Amortization and Write-Offs

(308)

(232)

Net Carrying Amount

992

1,268

Customer intangibles

Acquired Finite-Lived Intangible Assets [Line Items]

Gross Carrying Amounts

89,400

89,900

Accumulated Amortization and Write-Offs

(61,927)

(47,856)

Net Carrying Amount

$ 27,473

42,044

In-process research and development

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

^[1]

Gross Carrying Amounts

$ 9,700

10,541

Net Carrying Amount

$ 9,700

$ 10,541

Minimum | Purchased technology

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

4 years

Minimum | Core technology

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

5 years

Minimum | Customer intangibles

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

5 years

Maximum | Purchased technology

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

7 years

Maximum | Core technology

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

8 years

Maximum | Customer intangibles

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

7 years

[1]

Goodwill and Acquired Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Goodwill and Intangible Assets Disclosure [Line Items]
Write off of acquired IPR&D	$ 0.8
Write off of acquisition related intangible assets		$ 0.0	$ 0.0

Future Amortization Expense of Identified Intangibles (Detail) - In Process Research and Development Excluded $ in Thousands	Feb. 02, 2013 USD ($)
Fiscal Year
2014	$ 35,778
2015	14,942
2016	12,203
2017	11,018
2018	5,590
Thereafter	424
Finite-Lived Intangible Assets, Net, Total	$ 79,955

Restructuring - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011
Restructuring Cost and Reserve [Line Items]
Proceeds from sale of building held for sale	$ 6.8
Research and development
Restructuring Cost and Reserve [Line Items]
Charge to write-down the carrying value to fair value of building classified as held for sale		$ 1.1

- Definition

The charge against earnings in the period, comprised of costs associated with restructuring activities not otherwise specified in the taxonomy pursuant to a duly authorized plan, excluding a discontinued operation as defined by generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, but excludes costs associated with the retirement of a long-lived asset and severance costs associated with established compensation plans.

+ References + Details

Restructuring Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
Restructuring Charges (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,257	$ 1,856	$ 3,183
Research and development
Restructuring Cost and Reserve [Line Items]
Restructuring charges	47	728	1,966
Selling and marketing
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(3)	8
General and administrative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,213	$ 1,120	$ 1,217

Analysis of the Components of the Restructuring Charges and the Payments Made (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities, beginning of period	$ 2,917	$ 3,306	$ 5,397
Restructuring charges	1,257	1,856	3,183
Non-cash adjustment	10	(506)	(1,272)
Net cash payments	(1,329)	(1,739)	(4,002)
Adjustments to previous assumptions	704		(331)
Restructuring liabilities, end of period	2,855	2,917	3,306
Facilities and related charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 553	1,619	3,420
Equipment and other related charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 237	$ 94

- Definition

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

+ References + Details

U.S. and Non-U.S. Components of Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
U.S. operations	$ 34,900	$ 28,039	$ 22,647
Non-U.S. operations	275,290	591,020	887,815
Income before income taxes, net	$ 310,190	$ 619,059	$ 910,462

Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Current income tax expense (benefit):
Federal	$ 4,461	$ 8,183	$ 1,111
State	407	99	49
Foreign	(8,289)	(1,069)	3,282
Total current income tax expense (benefit)	(3,421)	7,213	4,442
Deferred income tax expense (benefit):
Federal	6,306	(1,361)	7,025
State	90	1,078	3,037
Foreign	630	(2,962)	(8,171)
Total deferred income tax expense (benefit)	7,026	(3,245)	1,891
Total provision for income taxes	$ 3,605	$ 3,968	$ 6,333

Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Deferred tax assets:
Federal and California research and other tax credits	$ 299,475	$ 259,635
Reserves and accruals	27,830	32,328
Stock compensation	3,523	2,678
Net operating losses	20,553	21,813
Gross deferred tax assets	351,381	316,454
Valuation allowance	(299,449)	(259,316)
Total deferred tax assets	51,932	57,138
Total deferred tax liabilities	(17,225)	(15,405)
Net deferred tax assets	$ 34,707	$ 41,733

Income Taxes - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Income Taxes [Line Items]
Deferred tax assets, non-current	$ 26,291	$ 31,064
Increase (decrease) in net deferred tax		7,000
Deferred tax liability due to bonus depreciation	4,600
Unrecognized tax benefit that would affect the effective income tax rate if recognized	61,600
Unrecognized tax benefit, interest and penalties accrued	33,800	35,300	$ 33,400
Interest and penalties related to unrecognized tax benefits included in consolidated statements of operation	5,800	5,900	7,000
Research
Income Taxes [Line Items]
Tax credit carryforwards			$ 299,500
Valuation allowance commentary			At the end of fiscal 2013, the Company has provided a full valuation allowance against its federal and various state research credits which it earns in excess of its current year tax liabilities, as well as its net operating loss carryforwards. Based on the available objective positive and negative evidence, the Company has determined that it is more likely than not that these research credits and acquired net operating losses will not be realized
Tax credit carryforwards, increase in valuation allowance		40,100
Foreign Country
Income Taxes [Line Items]
Net operating loss carryforwards, foreign	$ 80,500
Net operating loss carryforwards, expiration date	The losses in non-U.S. components can be carried forward indefinitely
Internal Revenue Service (IRS)
Income Taxes [Line Items]
Net operating loss carryforwards, U.S. federal	$ 2,200
Net operating loss carryforwards, expiration date	The federal carryforwards will expire in various fiscal years between 2021 and 2027
Internal Revenue Service (IRS) \| Research
Income Taxes [Line Items]
Tax credit carryforwards	$ 194,400
Tax credit carryforward, expiration dates	Expire through fiscal 2033
Net operating loss carryforwards, amount attributable to excess tax benefits from stock options	$ 51,700
California State
Income Taxes [Line Items]
Net operating loss carryforwards, state	$ 7,500
Net operating loss carryforwards, expiration date	The California carryforwards will expire at various fiscal years between 2016 and 2033, if not utilized before these years
California State \| Research
Income Taxes [Line Items]
Tax credit carryforwards	$ 193,700
Tax credit carryforward, expiration dates	Which can be carryforward indefinitely
Net operating loss carryforwards, amount attributable to excess tax benefits from stock options	$ 53,500
Other State \| Research and Investment
Income Taxes [Line Items]
Tax credit carryforwards	$ 16,700
Tax credit carryforward, expiration dates	Expire through fiscal 2028
Economic Development Board of Singapore Pioneer Status
Income Taxes [Line Items]
Expiration of tax exemption	10 years
Tax savings associated with the tax holiday	$ 13,600	$ 3,100	$ 7,900
Tax holidays, per share effect on earnings	$ 0.02	$ 0.01	$ 0.01
Economic Development Board of Singapore Pioneer Status \| Extended Expiration
Income Taxes [Line Items]
Expiration of tax exemption	15 years
Israeli Law of Approved or Benefited Enterprise
Income Taxes [Line Items]
Tax holidays, per share effect on earnings	$ 0.02	$ 0.02	$ 0.03
Tax holidays, tax savings amount	$ 13,800	$ 13,600	$ 18,400
Israeli Law of Approved or Benefited Enterprise \| Minimum
Income Taxes [Line Items]
Expiration of tax exemption	10 years
Tax holidays, reduced income tax rate	0.00%
Israeli Law of Approved or Benefited Enterprise \| Maximum
Income Taxes [Line Items]
Expiration of tax exemption	15 years
Tax holidays, reduced income tax rate	10.00%
Swiss Federal Department of Economy and the Vaud Cantonal Tax Administration Tax Holiday
Income Taxes [Line Items]
Expiration of tax exemption	10 years
Tax holidays, per share effect on earnings	$ 0.01	$ 0.01	$ 0.01
Tax holidays, tax savings amount	$ 4,600	$ 4,700	$ 4,500

Reconciliation of Statutory Federal Income Tax to Effective Tax (Detail)	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Reconciliation of Statutory Federal Tax Rate [Line Items]
Provision at U.S. notional statutory rate	35.00%	35.00%	35.00%
Non-deductible stock-based compensation	15.40%	6.90%	5.60%
Difference in U.S. and non-U.S. tax rates	(48.80%)	(40.70%)	(40.00%)
Benefits from utilization of general business credits	(13.80%)	(6.80%)	(3.70%)
Change in valuation allowance	12.90%	5.60%	3.40%
Other	0.50%	0.60%	0.40%
Effective tax rate	1.20%	0.60%	0.70%

Changes in Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized tax benefits as the beginning of the period	$ 96,294	$ 102,612	$ 103,334
Increases related to prior year tax positions	1,106	987	494
Decreases related to prior year tax positions		(307)	(149)
Increases related to current year tax positions	1,139	1,229	1,317
Settlements	(3,956)	(243)
Lapse in the statute of limitations	(15,543)	(9,529)	(10,293)
Foreign exchange (gain) loss	(9)	1,545	7,909
Gross amounts of unrecognized tax benefits as of the end of the period	$ 79,031	$ 96,294	$ 102,612

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Feb. 02, 2013	Dec. 26, 2012	Jan. 28, 2012	Jan. 28, 2011
Commitments and Contingencies Disclosure [Line Items]
Standard warranty period	90 days
Extended warranty period	1 year
Description of extended warranty period	Warranty period can extend to more than one year based on contractual agreements
Accrual related to an ongoing litigation matter	$ 5.7
Carnegie Mellon University
Commitments and Contingencies Disclosure [Line Items]
Date of lawsuit filed		Mar. 06, 2009
Damages in the amount alleged in pre-trial proceedings		$ 1,170.0
Pre-judgment interest		$ 322.0
Manufacturing Expense
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment, outstanding commitment	212.1
Operating Lease Expense
Commitments and Contingencies Disclosure [Line Items]
Rent expense, net of sublease income	$ 23.7		$ 20.5	$ 17.1

Changes in Warranty Accrual Included in Accrued Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Product Liability Contingency [Line Items]
Beginning balance	$ 2,354	$ 2,439	$ 1,965
Warranty expense	679	1,126	2,291
Acquisitions		408
Payments and other charges	(1,097)	(1,619)	(1,817)
Ending balance	$ 1,936	$ 2,354	$ 2,439

Future Minimum Lease Payments, Net of Estimated Sublease Income under Operating and Capital Leases (Detail) $ in Thousands	Feb. 02, 2013 USD ($)
Fiscal Year:
2014	$ 48,536
2015	43,632
2016	26,807
2017	6,631
2018	1,453
Thereafter	2,936
Total future minimum lease payments	129,995
Minimum Lease Payments
Fiscal Year:
2014	48,751
2015	43,704
2016	26,882
2017	6,677
2018	1,453
Thereafter	2,936
Total future minimum lease payments	130,403
Sublease Income
Fiscal Year:
2014	(215)
2015	(72)
2016	(75)
2017	(46)
Total future minimum lease payments	$ (408)

Future Minimum Payments Under Technology License Obligations (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Jan. 28, 2012
Fiscal Year:
Less: current portion	$ (9,865)	$ (5,250)
Non-current portion	34,270
Technology License Agreement
Fiscal Year:
2014	9,351
2015	9,579
2016	9,807
2017	7,869
2018	9,180
Thereafter
Total future minimum lease payments	45,786
Less: amount representing interest	(3,094)
Present value of future minimum payments	42,692
Less: current portion	(8,422)
Non-current portion	$ 34,270

Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Defined Contribution Pension Plan 401k
Postemployment Benefits Disclosure [Line Items]
401(k) savings and investment plan, general description of the plan	The Company sponsors a 401(k) savings and investment plan that allows eligible U.S. employees to participate by making pre-tax contributions to the 401(k) plan ranging from 1% to 50% of eligible earnings subject to a required annual limit. The Company matches 100% of the employee contribution up to $500 per eligible employee on a quarterly basis. The participant must be employed by the Company on the last day of the calendar quarter to qualify for the match. At the end of the calendar year, the eligible employees receive a true-up match equal to the accumulated employee contribution for the calendar year up to $2,000.
Employer match contributions	$ 5,000,000	$ 4,800,000	$ 4,500,000
Defined Contribution Pension Plan 401k \| Minimum
Postemployment Benefits Disclosure [Line Items]
Employee pre-tax contributions to 401(k)	1.00%
Defined Contribution Pension Plan 401k \| Maximum
Postemployment Benefits Disclosure [Line Items]
Employee pre-tax contributions to 401(k)	50.00%
Defined Contribution Pension Plan 401k \| Quarterly Match \| Maximum
Postemployment Benefits Disclosure [Line Items]
Employer match contributions	$ 500
Defined Contribution Pension Plan 401k \| Annual True Up Match \| Maximum
Postemployment Benefits Disclosure [Line Items]
Employer match contributions	2,000
Defined Contribution Plans Non-U.S Locations
Postemployment Benefits Disclosure [Line Items]
Employer match contributions	$ 17,200,000	$ 16,200,000	$ 16,000,000

Shareholders' Equity - Additional Information (Detail)		1 Months Ended					3 Months Ended		12 Months Ended
Shareholders' Equity - Additional Information (Detail)	Feb. 01, 2013 USD ($) $ / shares	Mar. 31, 2013 USD ($) $ / shares shares	Feb. 28, 2013 $ / shares	Dec. 24, 2011 USD ($)	Aug. 31, 2010	Aug. 19, 2010 USD ($)	Feb. 02, 2013 USD ($) $ / shares shares	Apr. 30, 2011 shares	Feb. 02, 2013 USD ($) Installment $ / shares shares	Feb. 01, 2013 $ / shares	Jan. 28, 2012 USD ($) $ / shares shares	Jan. 29, 2011 USD ($) $ / shares shares	Jan. 28, 2011 USD ($) shares	May 16, 2012 USD ($)	Jul. 30, 2011 USD ($)	Mar. 26, 2011 USD ($)
Stockholders Equity Note [Line Items]
Common shares, shares authorized \| shares							992,000,000		992,000,000		992,000,000
Common shares, par value \| $ / shares							$ 0.002		$ 0.002		$ 0.002
Preferred shares, shares authorized \| shares							8,000,000		8,000,000		8,000,000
Preferred shares, par value \| $ / shares							$ 0.002		$ 0.002		$ 0.002
Shares Granted \| shares									7,041,000		6,626,000	2,018,000
Aggregate intrinsic value of stock options exercised									$ 33,600,000		$ 41,800,000	$ 162,900,000
Closing stock price \| $ / shares	$ 9.51									$ 9.51
Stock-based compensation capitalized in inventory							$ 1,500,000		1,500,000		$ 2,100,000	$ 1,500,000
Cash and short-term investments							$ 1,900,000,000		$ 1,900,000,000
Share repurchase program, amount repurchased	$ 22,200,000
Dividend per share, paid \| $ / shares							$ 0.06		$ 0.18
Total Dividends paid									$ 98,761,000
Dividend Declared
Stockholders Equity Note [Line Items]
Dividend per share, paid \| $ / shares			$ 0.06
Director Stock Incentive Plan, 2007 Plan
Stockholders Equity Note [Line Items]
Shares reserved for issuance, authorized \| shares							750,000		750,000
Number of shares available for future issuance \| shares							343,000		343,000
Stock option award									$ 110,000
Market Based Option Award
Stockholders Equity Note [Line Items]
Stock option, vesting term								2 years 7 months 28 days
Shares Granted \| shares								3,100,000			3,149,000
Terms of options									If the market price condition is not met within five years from the date of grant, the options automatically expire.
Options vested and expected to vest, aggregate intrinsic value							$ 0		$ 0
Options vested and expected to vest, weighted average remaining contractual term (in years)									8 years 2 months 12 days
Unrecognized share based compensation cost							$ 4,600,000		$ 4,600,000
Unrecognized share based compensation cost, weighted-average period of recognition									10 months 24 days
Upon Appointment To Board of Directors \| Director Stock Incentive Plan, 2007 Plan
Stockholders Equity Note [Line Items]
Number of shares authorized to a director \| shares							50,000		50,000
Upon Appointment To Board of Directors \| Director Stock Incentive Plan, 2007 Plan \| First Anniversary Of Grant Date
Stockholders Equity Note [Line Items]
Stock Option Plan, vesting rate of remaining shares									One-third
Upon Appointment To Board of Directors \| Director Stock Incentive Plan, 2007 Plan \| Second Anniversary Of Grant Date and Thereafter
Stockholders Equity Note [Line Items]
Stock Option Plan, vesting rate of remaining shares									One-third
Upon ReElection By Shareholders \| Director Stock Incentive Plan, 2007 Plan
Stockholders Equity Note [Line Items]
Stock Option Plan, percentage to vest after vesting commencement date							100.00%		100.00%
Number of shares authorized to a director \| shares							9,000		9,000
Restricted Stock Awards
Stockholders Equity Note [Line Items]
Annual RSU Award									$ 70,000
Annual RSU awards, percentage to vest after vesting commencement date							100.00%		100.00%
Restricted Stock Awards \| Director Stock Incentive Plan, 2007 Plan
Stockholders Equity Note [Line Items]
Annual RSU Award									$ 110,000
Annual RSU awards, percentage to vest after vesting commencement date							100.00%		100.00%
Time Based Option Award
Stockholders Equity Note [Line Items]
Shares Granted \| shares									7,041,000		3,477,000	2,018,000
Options vested and expected to vest, aggregate intrinsic value							$ 29,600,000		$ 29,600,000
Options vested and expected to vest, weighted average remaining contractual term (in years)									4 years 4 months 24 days
Options exercisable, aggregate intrinsic value							28,300,000		$ 28,300,000
Options exercisable, weighted average remaining contractual term (in years)									3 years 6 months
Unrecognized share based compensation cost							41,300,000		$ 41,300,000
Unrecognized share based compensation cost, weighted-average period of recognition									2 years 8 months 12 days
Expected dividend yield									0.30%
Time Based Option Award \| Minimum
Stockholders Equity Note [Line Items]
Expected dividend yield									0.00%
Time Based Option Award \| Maximum
Stockholders Equity Note [Line Items]
Expected dividend yield									3.10%
Restricted Stock Units (RSUs)
Stockholders Equity Note [Line Items]
Unrecognized share based compensation cost							134,000,000		$ 134,000,000
Unrecognized share based compensation cost, weighted-average period of recognition									2 years 8 months 12 days
Restricted stock units, aggregate intrinsic value							$ 108,700,000		$ 108,700,000
Restricted stock units vested and expected to vest \| shares							11,400,000		11,400,000
Employee Stock Option Plan, 1995 Plan
Stockholders Equity Note [Line Items]
Shares reserved for issuance, authorized \| shares							383,400,000		383,400,000
Stock option, expiration term									10 years
Stock Option Plan, percentage to vest after vesting commencement date							20.00%		20.00%
Stock Option Plan, vesting rate of remaining shares									One-sixtieth per month
Stock option Plan, number of installments \| Installment									4
Number of shares available for future issuance \| shares							111,500,000		111,500,000
Employee Stock Option Plan, 1995 Plan \| After One Year From Vesting Commencement Date
Stockholders Equity Note [Line Items]
Stock option, vesting term									48 months
Employee Stock Option Plan, 1995 Plan \| Market Based Option Award
Stockholders Equity Note [Line Items]
Stock option, expiration term										5 years
Employee Stock Option Plan, 1995 Plan \| Incentive Stock Option
Stockholders Equity Note [Line Items]
Employee stock purchase plan, purchase price									110.00%
Directors Stock Option Plan, 1997 Plan
Stockholders Equity Note [Line Items]
Stock option, expiration term									10 years
Directors Stock Option Plan, 1997 Plan \| Upon Appointment To Board of Directors
Stockholders Equity Note [Line Items]
Stock Option Plan, percentage to vest after vesting commencement date							20.00%		20.00%
Stock Option Plan, vesting rate of remaining shares									One-sixtieth per month
Number of shares authorized to a director \| shares							30,000		30,000
Directors Stock Option Plan, 1997 Plan \| Upon Appointment To Board of Directors \| After One Year From Vesting Commencement Date
Stockholders Equity Note [Line Items]
Stock option, vesting term									48 months
Directors Stock Option Plan, 1997 Plan \| On Date Of Annual Meeting Of Shareholders
Stockholders Equity Note [Line Items]
Stock Option Plan, vesting rate of remaining shares									One-twelfth per month
Stock option, vesting term									12 months
Number of shares authorized to a director \| shares							6,000		6,000
Employee Stock Purchase Plan, 2000 Restated Plan
Stockholders Equity Note [Line Items]
Employee stock purchase plan, purchase price									85.00%
Number of shares available for future issuance \| shares							26,600,000		26,600,000
Employee stock purchase plan, percentage discount of purchase price per share of common shares									15.00%
Employee stock purchase plan, "look-back" period									24 months
Employee stock purchase plan, shares issued \| shares									7,600,000		4,900,000	10,900,000
Employee stock purchase plan, weighted-average price \| $ / shares							$ 8.77		$ 8.77		$ 12.48	$ 5.27
Stock Repurchase Plan 2010
Stockholders Equity Note [Line Items]
Share repurchase program, amount authorized						$ 500,000,000
Share repurchase program, terms					In August 2010, the Company announced that its board of directors had authorized a share repurchase program of up to $500 million of the Company's common shares in open market, privately negotiated or block transactions.
Common Stock Repurchase Program
Stockholders Equity Note [Line Items]
Share repurchase program, amount authorized				$ 3,000,000,000
Share repurchase program, terms									In March, July and December 2011, and May and December 2012, the Company announced that its board of directors authorized the Company to repurchase up to an additional $500 million, respectively, for a total of $3.0 billion, of its outstanding common shares. The repurchase program is subject to market conditions and other factors and does not obligate the Company to repurchase any dollar amount or number of its common shares. The program may be extended, modified, suspended or discontinued at any time. The future repurchases, which are expected to be funded from the Company’s current cash and short-term investments position of over $1.9 billion, may occur in open market, privately negotiated or block transactions.
Share repurchase program, additional authorized amount				$ 500,000,000										$ 500,000,000	$ 500,000,000	$ 500,000,000
Cash and short-term investments							$ 1,900,000,000		$ 1,900,000,000
Share repurchase program, shares repurchased \| shares									91,000,000		87,800,000		4,900,000
Share repurchase program, amount repurchased									$ 959,100,000		$ 1,300,000,000		$ 87,500,000
Share repurchase program, amount repurchased \| shares							183,700,000		183,700,000
Share repurchase program, total amount of repurchases							$ 2,400,000,000		$ 2,400,000,000
Share repurchase program, amount repurchased									$ 612,600,000
Common Stock Repurchase Program \| Repurchase of Equity
Stockholders Equity Note [Line Items]
Share repurchase program, shares repurchased \| shares		8,700,000
Share repurchase program, amount repurchased		$ 85,500,000
Share repurchase program, additional shares repurchased, average price per share \| $ / shares		$ 9.80
Employee Stock Purchase Plan, 2000 Plan
Stockholders Equity Note [Line Items]
Employee stock purchase plan, "look-back" period											6 months

Stock Option Plan Activity (Detail) - $ / shares shares in Thousands	3 Months Ended	12 Months Ended
	Apr. 30, 2011	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Options Outstanding
Beginning Balance	56,325	55,591	56,325	70,966
Granted		7,041	6,626	2,018
Exercised		(5,977)	(5,681)	(13,959)
Canceled/Forfeited		(4,259)	(1,679)	(2,700)
Expired
Ending Balance		52,396	55,591	56,325
Weighted Average Exercise Price
Beginning Balance	$ 11.96	$ 12.70	$ 11.96	$ 11.28
Granted		14.59	15.37	20.17
Exercised		6.44	7.95	8.45
Canceled/Forfeited		16.04	14.58	18.47
Expired
Ending Balance		$ 13.39	$ 12.70	$ 11.96
Time Based Option Award
Options Outstanding
Beginning Balance	56,325	52,467	56,325	70,966
Granted		7,041	3,477	2,018
Exercised		(5,977)	(5,681)	(13,959)
Canceled/Forfeited		(3,894)	(1,654)	(2,700)
Expired
Ending Balance		49,637	52,467	56,325
Vested or expected to vest at February 2, 2013		48,584
Exercisable at February 2, 2013		39,789
Weighted Average Exercise Price
Beginning Balance	$ 11.96	$ 12.53	$ 11.96	$ 11.28
Granted		14.59	15.31	20.17
Exercised		6.44	7.95	8.45
Canceled/Forfeited		16.10	14.57	18.47
Expired
Ending Balance		13.28	$ 12.53	$ 11.96
Vested or expected to vest at February 2, 2013		13.25
Exercisable at February 2, 2013		$ 12.91
Market Based Option Award
Options Outstanding
Beginning Balance		3,124
Granted	3,100		3,149
Canceled/Forfeited		(365)	(25)
Expired
Ending Balance		2,759	3,124
Weighted Average Exercise Price
Beginning Balance		$ 15.43
Granted			$ 15.43
Canceled/Forfeited		15.43	15.43
Expired
Ending Balance		$ 15.43	$ 15.43

Activity Related to Non Vested Portion of Restricted Stock Units (Detail) - Restricted Stock Units (RSUs) - $ / shares shares in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Restricted Stock Units Outstanding
Beginning Balance	9,646	5,486	2,746
Granted	7,370	6,877	4,718
Vested	(2,796)	(2,014)	(1,619)
Canceled/Forfeited	(1,481)	(703)	(359)
Ending Balance	12,739	9,646	5,486
Weighted Average Grant Date Fair Value
Beginning Balance	$ 17.38	$ 18.75	$ 8.99
Granted	14.64	15.80	20.76
Vested	17.78	15.90	9.13
Canceled/Forfeited	17.16	16.81	13.87
Ending Balance	$ 15.78	$ 17.38	$ 18.75

Total Stock Compensation by Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 127,280	$ 119,863	$ 118,405
Cost of goods sold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	8,142	6,995	7,522
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	87,149	85,924	82,524
Selling and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	13,278	12,920	11,769
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 18,711	$ 14,024	$ 16,590

Weighted Average Assumptions used to Calculate Fair Value of Each Time Based Equity Award Using Black Scholes Option Pricing Model (Detail) - Time Based Option Award - $ / shares	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value	$ 5.52	$ 6.05	$ 9.33
Expected volatility	44.00%	44.00%	53.00%
Expected term (in years)	4 years 9 months 18 days	4 years 9 months 18 days	4 years 8 months 12 days
Risk-free interest rate	0.90%	2.00%	2.20%
Expected dividend yield	0.30%

Fair Value of Each Market Based Option Award Estimated Using Monte Carlo Simulation Model (Detail) - Market Based Option Award	12 Months Ended
	Jan. 28, 2012 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value	$ 5.08
Expected volatility	42.00%
Risk-free interest rate, minimum	0.90%
Risk-free interest rate, maximum	3.60%

Fair value of Each Restricted Stock Unit Estimated Based on Market Price of Common Shares on Date of Grant Less Expected Dividend Yield (Detail) - Employee Stock Purchase Plan - $ / shares	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated fair value	$ 3.13	$ 4.63	$ 5.91
Volatility	40.00%	44.00%	53.00%
Expected term (in years)	1 year 2 months 12 days	1 year 1 month 6 days	6 months
Risk-free interest rate	0.20%	0.10%	0.20%
Dividend yield	2.40%

Net Revenue and Long-Lived Asset Information based on Geographic Region (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Net Revenue:
Net revenue	$ 775,294	$ 780,881	$ 816,104	$ 796,351	$ 742,701	$ 950,417	$ 897,520	$ 802,402	$ 3,168,630	$ 3,393,040	$ 3,611,893
Property and equipment, net:
Property and equipment, net	387,027				383,801				387,027	383,801
United States
Net Revenue:
Net revenue									176,581	194,638	157,259
Property and equipment, net:
Property and equipment, net	208,459				207,848				208,459	207,848
China
Net Revenue:
Net revenue									1,599,681	1,496,864	1,209,982
Property and equipment, net:
Property and equipment, net	37,469				32,205				37,469	32,205
Thailand
Net Revenue:
Net revenue									369,855	531,073	602,639
Malaysia
Net Revenue:
Net revenue									351,401	420,382	348,271
Philippines
Net Revenue:
Net revenue									246,269	207,450	187,156
Others
Net Revenue:
Net revenue									424,843	542,633	$ 1,106,586
Property and equipment, net:
Property and equipment, net	16,379				16,868				16,379	16,868
Bermuda
Property and equipment, net:
Property and equipment, net	5,691				8,256				5,691	8,256
Israel
Property and equipment, net:
Property and equipment, net	36,671				26,061				36,671	26,061
Singapore
Property and equipment, net:
Property and equipment, net	$ 82,358				$ 92,563				$ 82,358	$ 92,563

Net Revenue by End Market (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
Net Revenue by End Market (Detail) - USD ($) $ in Thousands	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Segment Reporting Information [Line Items]
Net revenue	$ 775,294	$ 780,881	$ 816,104	$ 796,351	$ 742,701	$ 950,417	$ 897,520	$ 802,402	$ 3,168,630	$ 3,393,040	$ 3,611,893
Storage products
Segment Reporting Information [Line Items]
Net revenue									1,494,959	1,560,772	1,650,465
Mobile and Wireless
Segment Reporting Information [Line Items]
Net revenue									822,533	968,706	1,124,442
Networking
Segment Reporting Information [Line Items]
Net revenue									708,821	697,865	683,103
Other products
Segment Reporting Information [Line Items]
Net revenue									$ 142,317	$ 165,697	$ 153,883

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 30, 2010
Related Party Transaction [Line Items]
Technology license agreement, renewed term	3 years
Veri Silicon Holdings Company Limited \| Technology License Agreement
Related Party Transaction [Line Items]
License Agreement	MIL is party to a technology license agreement with VeriSilicon Holdings Co., Ltd. (“VeriSilicon”). MIL assumed this technology license agreement between VeriSilicon and UTStarcom, Inc. after the Company’s acquisition of the semiconductor business of UTStarcom in December 2005. MIL has subsequently entered into various addenda to this agreement for additional technology beyond the scope of the original agreement. During fiscal 2013, MIL entered into two new addenda with VeriSilicon related to the technology license agreement. In addition, in September 2010, MIL entered into a services agreement with VeriSilicon, pursuant to which VeriSilicon has agreed to provide design support services to MIL pursuant to which VeriSilicon helped on two projects for MIL during fiscal 2012.
Liability to related party	$ 0.5
Veri Silicon Holdings Company Limited \| Technology License Agreement \| License and Support Fees
Related Party Transaction [Line Items]
Amount of transactions with related parties	$ 2.8	$ 1.2
Vivante Corporation \| Technology License Agreement
Related Party Transaction [Line Items]
License Agreement	In December 2009, MIL entered into a technology license agreement with Vivante Corporation ("Vivante") that provides for the license of graphics technology and associated services. This agreement restates, expands and succeeds previous agreements between the parties for the same technology.
Vivante Corporation \| Restated Technology Agreement
Related Party Transaction [Line Items]
Liability to related party	$ 13.8
Vivante Corporation \| Restated Technology Agreement \| License and Support Fees
Related Party Transaction [Line Items]
Amount of transactions with related parties	$ 8.6	$ 5.8
Vivante Corporation \| Restated Technology Agreement \| License Fees
Related Party Transaction [Line Items]
Amount of transactions with related parties			$ 13.0
Payment period			3 years
Vivante Corporation \| Restated Technology Agreement \| Support Fees
Related Party Transaction [Line Items]
Payment period			3 years
Maintenance fees			10.00%

Quarterly Unaudited Consolidated Statements of Operations Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Quarterly Financial Information [Line Items]
Net revenue	$ 775,294	$ 780,881	$ 816,104	$ 796,351	$ 742,701	$ 950,417	$ 897,520	$ 802,402	$ 3,168,630	$ 3,393,040	$ 3,611,893
Gross profit	404,461	406,378	434,265	430,029	401,588	538,317	519,403	467,927
Net income	$ 50,152	$ 68,816	$ 93,074	$ 94,543	$ 80,717	$ 195,121	$ 192,392	$ 146,861	$ 306,585	$ 615,091	$ 904,129
Net income per share:
Basic	$ 0.10	$ 0.12	$ 0.17	$ 0.16	$ 0.14	$ 0.32	$ 0.32	$ 0.23	$ 0.55	$ 1.01	$ 1.39
Diluted	$ 0.09	$ 0.12	$ 0.16	$ 0.16	$ 0.13	$ 0.32	$ 0.31	$ 0.22	$ 0.54	$ 0.99	$ 1.34

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.21)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.23)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 18
-Article 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 36, 37, 38
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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-Number 210
-Section 03
-Paragraph 20
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 21
-Article 9

+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.18)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.22)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e565-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 10, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A7
-Appendix A

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 87-21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 19
-Article 5

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28, 29, 30
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

+ Details

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Allowance for doubtful accounts and sales return reserve
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 2,663	$ 7,366	$ 5,912
Additions	9,024	4,393	12,217
Deductions	(3,766)	(9,096)	(10,763)
Balance at End of Year	7,921	2,663	7,366
Deferred tax valuation
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	259,316	224,853	197,710
Additions	40,133	34,694	30,621
Deductions		(231)	(3,478)
Balance at End of Year	$ 299,449	$ 259,316	$ 224,853