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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Aug. 03, 2013	Aug. 29, 2013
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Aug. 03, 2013
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q2
Trading Symbol	MRVL
Entity Registrant Name	MARVELL TECHNOLOGY GROUP LTD
Entity Central Index Key	0001058057
Current Fiscal Year End Date	--02-01
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		492,300,000

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Aug. 03, 2013	Feb. 02, 2013
Current assets:
Cash and cash equivalents	$ 591,655	$ 751,953
Short-term investments	1,134,543	1,167,037
Accounts receivable, net	430,874	330,238
Inventories	335,320	250,420
Prepaid expenses and other current assets	57,824	77,282
Deferred income taxes	8,414	8,416
Total current assets	2,558,630	2,585,346
Property and equipment, net	363,486	372,971
Long-term investments	16,299	16,769
Goodwill	2,032,538	2,032,138
Acquired intangible assets, net	71,717	89,655
Other non-current assets	161,574	164,885
Total assets	5,204,244	5,261,764
Current liabilities:
Accounts payable	355,164	286,552
Accrued liabilities	121,806	143,991
Accrued employee compensation	121,147	117,195
Deferred income	75,465	60,150
Total current liabilities	673,582	607,888
Non-current income taxes payable	90,502	112,871
Other non-current liabilities	47,650	56,410
Total liabilities	811,734	777,169
Commitments and contingencies (Note 9)
Shareholders' equity:
Common shares, $0.002 par value	988	1,017
Additional paid-in capital	2,801,316	2,945,643
Accumulated other comprehensive (loss) income	(1,572)	1,148
Retained earnings	1,591,778	1,536,787
Total shareholders' equity	4,392,510	4,484,595
Total liabilities and shareholders' equity	$ 5,204,244	$ 5,261,764

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Aug. 03, 2013	Feb. 02, 2013
Common shares, par value	$ 0.002	$ 0.002

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Net revenue	$ 807,056	$ 816,104	$ 1,541,425	$ 1,612,455
Operating costs and expenses:
Cost of goods sold	386,059	381,839	721,497	748,161
Research and development	292,642	264,175	571,694	520,145
Selling and marketing	38,548	41,034	78,537	81,100
General and administrative	27,192	25,718	53,515	51,423
Amortization and write-off of acquired intangible assets	10,638	13,023	21,324	27,378
Total operating costs and expenses	755,079	725,789	1,446,567	1,428,207
Operating income	51,977	90,315	94,858	184,248
Interest and other income, net	8,253	5,864	11,413	6,921
Income before income taxes	60,230	96,179	106,271	191,169
Provision (benefit) for income taxes	(1,596)	3,105	(8,764)	3,552
Net income	$ 61,826	$ 93,074	$ 115,035	$ 187,617
Net income per share:
Basic	$ 0.13	$ 0.17	$ 0.23	$ 0.33
Diluted	$ 0.12	$ 0.16	$ 0.23	$ 0.32
Weighted average shares:
Basic	494,293	562,362	498,237	571,193
Diluted	500,625	570,325	503,006	582,532
Cash dividend declared per share	$ 0.06	$ 0.06	$ 0.12	$ 0.06

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Net income	$ 61,826	$ 93,074	$ 115,035	$ 187,617
Other comprehensive income, net of tax:
Net change in unrealized gain/loss on marketable securities	(3,586)	584	(2,534)	873
Net change in unrealized gain/loss on auction rate securities	(251)	(112)	(170)	(112)
Net change in unrealized gain/loss on cash flow hedges	89	(1,411)	(16)	(159)
Other comprehensive (loss) income, net	(3,748)	(939)	(2,720)	602
Comprehensive income	$ 58,078	$ 92,135	$ 112,315	$ 188,219

- 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=31042434&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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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
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-Name Accounting Standards Codification
-Topic 220
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-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e565-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 19
-Article 5

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

+ Details

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012
Cash flows from operating activities:
Net income	$ 115,035	$ 187,617
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	50,663	42,484
Share-based compensation	74,604	60,420
Amortization and write-off of acquired intangible assets	21,324	27,378
Other expense, net	4,339	5,175
Excess tax benefits from share-based compensation	(32)	(44)
Changes in assets and liabilities:
Accounts receivable	(100,636)	16,491
Inventories	(84,293)	8,033
Prepaid expenses and other assets	19,305	15,635
Accounts payable	83,869	27,537
Accrued liabilities and other non-current liabilities	(33,094)	13,939
Accrued employee compensation	3,952	(24,681)
Deferred income	15,315	7,881
Net cash provided by operating activities	170,351	387,865
Cash flows from investing activities:
Purchases of available-for-sale securities	(471,469)	(646,907)
Sales and maturities of available-for-sale securities	498,680	881,309
Investments in privately-held companies	(750)	(5,750)
Cash paid for acquisition, net	(2,551)
Purchases of technology licenses	(7,610)	(6,452)
Purchases of property and equipment	(39,061)	(29,734)
Net cash (used in) provided by investing activities	(22,761)	192,466
Cash flows from financing activities:
Repurchase of common stock	(304,808)	(473,484)
Proceeds from employee stock plans	73,121	57,329
Minimum tax withholding paid on behalf of employees for net share settlement	(9,888)	(9,477)
Dividend payments to shareholders	(60,044)	(33,537)
Payments on technology license obligations	(6,301)
Excess tax benefits from share-based compensation	32	44
Net cash used in financing activities	(307,888)	(459,125)
Net (decrease) increase in cash and cash equivalents	(160,298)	121,206
Cash and cash equivalents at beginning of period	751,953	784,902
Cash and cash equivalents at end of period	$ 591,655	$ 906,108

The Company and Basis of Presentation

6 Months Ended

Aug. 03, 2013

The Company and Basis of Presentation

Note 1. The Company and Basis of Presentation

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 ARM-based microprocessor integrated circuits. The Company also 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.

Reclassification

Certain amounts in the unaudited condensed consolidated financial statements and notes to the unaudited condensed consolidated financial statements for prior years have been reclassified to conform to the fiscal 2014 presentation. Net operating results have not been affected by these reclassifications.

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 2014 has a 52-week period and fiscal 2013 had a 53-week period.

The unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. In the opinion of management, all adjustments consisting of normal and recurring entries considered necessary for a fair statement of the results for the interim periods have been included in the Company’s balance sheet as of August 3, 2013, the results of its operations for the three and six months ended August 3, 2013 and July 28, 2012, and its cash flows for the six months ended August 3, 2013 and July 28, 2012. The February 2, 2013 condensed consolidated balance sheet data was derived from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended February 2, 2013, but does not include all disclosures required for annual periods.

These condensed consolidated financial statements and related notes are unaudited and should be read in conjunction with the Company’s audited financial statements and related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended February 2, 2013 as filed on March 29, 2013 with the Securities and Exchange Commission. The results of operations for the three and six months ended August 3, 2013 are not necessarily indicative of the results that may be expected for any other interim period or for the full fiscal year.

Use of Estimates

The preparation of consolidated financial statements in conformity with 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 share-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 unaudited condensed 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.

Recent Accounting Pronouncements

6 Months Ended

Aug. 03, 2013

Recent Accounting Pronouncements

Note 2. Recent Accounting Pronouncements

Accounting Pronouncements Recently Adopted

The Company adopted the new accounting standard regarding the testing of indefinite-lived intangible assets for impairment at the beginning of fiscal 2014. 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. The adoption of this guidance had no impact on the Company’s financial statements.

The Company adopted the new accounting standard 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. The Company elected to disclose the information in the Notes to Unaudited Condensed Consolidated Financial Statements beginning in fiscal 2014.

- Definition

The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6510796

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=28359718&loc=d3e22583-107794

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

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-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
-URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699

Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6503790

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6523989

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 270
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-URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305

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-URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 01
-Paragraph b
-Subparagraph 6
-Article 10

+ Details

Investments

6 Months Ended

Aug. 03, 2013

Investments

Note 3. Investments

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


	As of August 3, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Short-term investments:
Available-for-sale:
Corporate debt securities	$	584,124	$	1,929	$	(1,574	)	$	584,479
U.S. government and agency debt		316,003		195		(44	)		316,154
Time deposits		138,000		—		—			138,000
Asset backed securities		72,646		—		(269	)		72,377
Foreign government and agency debt		10,319		—		(21	)		10,298
Municipal debt securities		13,243		6		(14	)		13,235

Total short-term investments		1,134,335		2,130		(1,922	)		1,134,543
Long-term investments:
Available-for-sale:
Auction rate securities		19,150		—		(2,851	)		16,299

Total long-term investments		19,150		—		(2,851	)		16,299

Total investments	$	1,153,485	$	2,130	$	(4,773	)	$	1,150,842


	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
U.S. government and agency debt		318,226		258		(5	)		318,479
Time deposits		188,000		—		—			188,000
Asset backed securities		76,629		50		(64	)		76,615
Foreign government and agency debt		4,320		—		(1	)		4,319

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 August 3, 2013, the Company’s investment portfolio included auction rate securities with an aggregate par value of $19.2 million. Beginning in February 2008, liquidity issues in the global credit markets resulted in a failure of auction rate securities, as the amount of securities submitted for sale in those auctions exceeded the amount of bids. Since this time, many of the issuers have refinanced their debt and paid down the auction rate securities, which have resulted in a smaller pool of outstanding securities. Although these securities have continued to pay interest and show an improvement in the underlying collateralization, there is currently limited trading volume. 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 August 3, 2013 was $2.9 million less than the par value and was recorded in long-term investments. Based on the Company’s balance of approximately $1.7 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 (loss) income, a component of shareholders’ equity.

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


	August 3, 2013				February 2, 2013
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year or less	$	438,999	$	439,334	$	519,006	$	519,537
Due between one and five years		681,370		681,316		627,769		629,991
Due over five years		33,116		30,192		36,970		34,278

	$	1,153,485	$	1,150,842	$	1,183,745	$	1,183,806

For individual securities that are in an 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):


	August 3, 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	$	251,224	$	(1,574	)	$	—	$	—		$	251,224	$	(1,574	)
Asset backed securities		65,076		(254	)		1,921		(15	)		66,997		(269	)
U.S. government and agency debt		61,493		(44	)		—		—			61,493		(44	)
Municipal debt securities		7,025		(14	)		—		—			7,025		(14	)
Foreign government and agency debt		5,978		(21	)		—		—			5,978		(21	)
Auction rate securities		—		—			16,299		(2,851	)		16,299		(2,851	)

Total securities	$	390,796	$	(1,907	)	$	18,220	$	(2,866	)	$	409,016	$	(4,773	)


	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	)
Asset backed securities		43,882		(64	)		—		—			43,882		(64	)
U.S. government and agency debt		14,677		(5	)		—		—			14,677		(5	)
Foreign government and agency debt		4,319		(1	)		—		—			4,319		(1	)
Auction rate securities		—		—			16,769		(2,681	)		16,769		(2,681	)

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

Supplemental Financial Information

6 Months Ended

Aug. 03, 2013

Supplemental Financial Information

Note 4. Supplemental Financial Information (in thousands)


	August 3, 2013			February 2, 2013
Inventories:
Work-in-process	$	217,971		$	140,805
Finished goods		117,349			109,615

Inventories	$	335,320		$	250,420


	August 3, 2013			February 2, 2013
Property and equipment, net:
Machinery and equipment	$	547,805		$	532,420
Buildings		144,320			144,320
Computer software		92,332			89,548
Land		53,373			53,373
Building improvements		49,555			49,516
Leasehold improvements		48,576			46,205
Furniture and fixtures		27,454			25,301
Construction in progress		2,455			5,333

		965,870			946,016
Less: Accumulated depreciation and amortization		(602,384	)		(573,045	)

Property and equipment, net	$	363,486		$	372,971


	August 3, 2013		February 2, 2013
Other non-current assets:
Technology and other licenses	$	78,697	$	81,523
Deferred tax assets		25,038		26,291
Investments in privately-held companies		13,946		14,486
Prepaid land use rights		13,900		14,056
Deposits		13,104		10,451
Other		16,889		18,078

Other non-current assets	$	161,574	$	164,885

Prepaid land use rights which were previously included in property and equipment have been reclassified to other non-current assets. The revision to the balance sheet at February 2, 2013 was not considered to be material and it had no impact on total assets, total liabilities, results of operations or cash flows.


	August 3, 2013		February 2, 2013
Accrued liabilities:
Accrued rebates	$	43,755	$	51,712
Accrued legal expense		26,807		18,357
Accrued royalties		16,239		12,695
Technology license obligations		8,103		9,865
Accrued share repurchases		144		22,152
Other		26,758		29,210

Accrued liabilities	$	121,806	$	143,991


	August 3, 2013		February 2, 2013
Other non-current liabilities:
Technology license obligations	$	29,978	$	34,270
Long-term accrued employee compensation		6,152		6,205
Other		11,520		15,935

Other non-current liabilities	$	47,650	$	56,410

Accumulated other comprehensive (loss) income:

The changes in accumulated other comprehensive (loss) income by component are presented in the following tables (in thousands):


	Unrealized Gain (Loss) on Marketable Securities			Unrealized Gain (Loss) on Auction Rate Securities			Unrealized Gain (Loss) on Cash Flow Hedges			Total
Balance at February 2, 2013	$	2,742		$	(2,681	)	$	1,087		$	1,148
Other comprehensive income (loss) before reclassifications		(1,991	)		(170	)		1,921			(240	)
Amounts reclassified from accumulated other comprehensive income		(543	)		—			(1,937	)		(2,480	)

Net current-period other comprehensive loss		(2,534	)		(170	)		(16	)		(2,720	)

Balance at August 3, 2013	$	208		$	(2,851	)	$	1,071		$	(1,572	)


	Unrealized Gain (Loss) on Marketable Securities			Unrealized Gain (Loss) on Auction Rate Securities			Unrealized Gain (Loss) on Cash Flow Hedges			Total
Balance at January 28, 2012	$	3,702		$	(1,285	)	$	(1,641	)	$	776
Other comprehensive income (loss) before reclassifications		1,644			(112	)		(1,830	)		(298	)
Amounts reclassified from accumulated other comprehensive income		(771	)		—			1,671			900

Net current-period other comprehensive income (loss)		873			(112	)		(159	)		602

Balance at July 28, 2012	$	4,575		$	(1,397	)	$	(1,800	)	$	1,378

The amounts reclassified from accumulated other comprehensive (loss) income by components are presented in the following table (in thousands):


	August 3, 2013
Affected Line Item in the Statement Where Net Income is Presented	Three Months Ended		Six Months Ended
Available-for-sale securities:
Interest and other income, net	$	167	$	543
Cash flow hedges:
Cost of goods sold		47		108
Research and development		726		1,671
Selling and marketing		63		145
General and administrative		5		13

Total	$	1,008	$	2,480

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):


	Three Months Ended				Six Months Ended
	August 3, 2013		July 28, 2012		August 3, 2013		July 28, 2012
Numerator:
Net income	$	61,826	$	93,074	$	115,035	$	187,617

Denominator:
Weighted average common shares outstanding:		494,293		562,362		498,237		571,193
Effect of dilutive securities:
Common share-based awards		6,332		7,963		4,769		11,339

Weighted average shares — diluted		500,625		570,325		503,006		582,532

Net income per share:
Basic	$	0.13	$	0.17	$	0.23	$	0.33
Diluted	$	0.12	$	0.16	$	0.23	$	0.32


	Three Months Ended				Six Months Ended
	August 3, 2013		July 28, 2012		August 3, 2013		July 28, 2012
Anti-dilutive potential common shares:
Weighted average shares outstanding from stock options		44,661		29,488		33,413		26,553

Weighted average exercise price	$	14.71	$	17.52	$	13.48	$	17.86

Anti-dilutive potential common shares for stock options are excluded from the calculation of diluted earnings per share for the periods reported above because either their exercise price exceeded the average market price during the period or certain stock options with exercise prices less than the average market price were determined to be anti-dilutive based on applying the treasury stock method. 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 August 3, 2013 and July 28, 2012 was lower than the required market condition. For the three and six months ended August 3, 2013, there were 2.7 million anti-dilutive shares from stock options that contain market conditions. For the corresponding three and six months ended July 28, 2012, there were 3.1 million anti-dilutive shares from stock options that contain market conditions.

Derivative Financial Instruments

6 Months Ended

Aug. 03, 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 foreign currency forward contracts were as follows (in thousands):


	Buy Contracts
	August 3, 2013		February 2, 2013
Euro	$	5,553	$	—
Israeli shekel		36,621		38,249

	$	42,174	$	38,249

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 derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

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Reference 14: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Fair Value Measurements

6 Months Ended

Aug. 03, 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. government and agency debt, which are valued primarily using quoted market prices. The Company’s Level 2 assets include its marketable investments in time deposits, corporate debt securities, foreign government and agency debt, municipal debt securities and asset backed 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, forward contracts and the severance pay fund 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 August 3, 2013.

The tables below set forth, by level, the Company’s assets that were accounted for at fair value as of August 3, 2013 and February 2, 2013. 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 August 3, 2013
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	12,348		—		—	$	12,348
U.S. government and agencies		3,000		—		—		3,000
Time deposits		—		63,035		—		63,035
Municipal debt securities		—		6,600		—		6,600
Corporate debt securities		—		1,599		—		1,599
Short-term investments:
U.S. government and agency debt		316,154		—		—		316,154
Corporate debt securities		—		584,479		—		584,479
Time deposits		—		138,000		—		138,000
Asset backed securities		—		72,377		—		72,377
Foreign government and agency debt		—		10,298		—		10,298
Municipal debt securities		—		13,235		—		13,235
Prepaid expenses and other current assets:
Forward contracts		—		1,127		—		1,127
Long-term investments:
Auction rate securities		—		—		16,299		16,299
Other non-current assets:
Severance pay fund		—		2,232		—		2,232

Total assets	$	331,502	$	892,982	$	16,299	$	1,240,783


	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:
U.S. government and agency debt	$	27,029		—		—	$	27,029
Money market funds		21,523		—		—		21,523
Time deposits		—		119,874		—		119,874
Short-term investments:
U.S. government and agency debt		318,479		—		—		318,479
Corporate debt securities		—		579,624		—		579,624
Time deposits		—		188,000		—		188,000
Asset backed securities		—		76,615		—		76,615
Foreign government and agency debt		—		4,319		—		4,319
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

The following table summarizes the change in fair value for Level 3 items (in thousands):


	Six Months Ended
	August 3, 2013			July 28, 2012
Beginning balance	$	16,769		$	23,215
Sales and redemptions		(300	)		(5,000	)
Unrealized losses included in accumulated other comprehensive income		(170	)		(112	)

Ending balance	$	16,299		$	18,103

- 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 + Details

Goodwill and Acquired Intangible Assets, Net

6 Months Ended

Aug. 03, 2013

Goodwill and Acquired Intangible Assets, Net

Note 7. Goodwill and Acquired Intangible Assets, Net

Goodwill

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


Balance at February 2, 2013	$	2,032,138
Additions due to business combinations		400

Balance at August 3, 2013	$	2,032,538

Acquired Intangible Assets, Net

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


		August 3, 2013							February 2, 2013
	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	$	(23,071	)	$	31,619	$	54,690	$	(18,552	)	$	36,138
Core technology	5 - 8 years		138,650		(132,960	)		5,690		138,650		(123,298	)		15,352
Trade names	5 years		1,300		(438	)		862		1,300		(308	)		992
Customer intangibles	5 - 7 years		89,400		(68,940	)		20,460		89,400		(61,927	)		27,473
IPR&D	*		13,086		—			13,086		9,700		—			9,700

Total intangible assets, net		$	297,126	$	(225,409	)	$	71,717	$	293,740	$	(204,085	)	$	89,655

Upon completion of the projects, the related in-process research and development (“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 write down the related IPR&D asset.

Based on the identified intangible assets recorded at August 3, 2013, the future amortization expense excluding IPR&D for the next five fiscal years is as follows (in thousands):


Fiscal year
Remainder of fiscal 2014	$	14,454
2015		14,942
2016		12,203
2017		11,018
2018		5,590
Thereafter		424

	$	58,631

- 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

Income Tax

6 Months Ended

Aug. 03, 2013

Income Tax

Note 8. Income Tax

The income tax benefit for the three months ended August 3, 2013 included the current income tax liability of $5.2 million, which was offset by a net reduction in unrecognized tax benefits of $6.8 million in the three months ended August 3, 2013. The net reduction in unrecognized tax benefits arose from the expiration of the statute of limitations, less an increase in current unrecognized tax benefit estimates. The income tax benefit for the six months ended August 3, 2013 included the current income tax liability of $7.0 million plus $0.7 million in settlements of audits in non-U.S. jurisdictions, which were offset by a net reduction in unrecognized tax benefits of $16.5 million. The net reduction in unrecognized tax benefits primarily arose from the expiration of statute of limitations in non-U.S. jurisdictions and from the settlement of two audits in non-U.S. jurisdictions (one for $3.5 million and the other for $4.1 million), less an increase in current unrecognized tax estimates.

The income tax provision for the three and six months ended July 28, 2012 included the current income tax liability of $5.9 million and $8.6 million, respectively, which were partially offset by a net reduction in unrecognized tax benefits of $3.4 million in the three months ended July 28, 2012 and $6.0 million in the six months ended July 28, 2012. These net reductions in unrecognized tax benefits arose primarily from the expiration of the statute of limitations in non-U.S. jurisdictions less an increase in current unrecognized tax benefit estimates.

It is reasonably possible that the amount of unrecognized tax benefits could increase or decrease significantly due to changes in tax law in various jurisdictions, new tax audits, and changes in U.S. dollar as compared to foreign currencies within the next 12 months. Excluding these factors, uncertain tax positions may decrease by as much as $30 million from the lapse of the statutes of limitation in various jurisdictions during the next 12 months.

The Company operates under tax holidays in certain countries, which are extended if certain additional requirements are satisfied. The tax holidays are conditional upon meeting certain employment and investment thresholds. The impact of these tax holidays decreased foreign taxes by $9.2 million for the six months ended August 3, 2013. The benefit of the tax holidays on net income per share was less than $0.01 per share for the six months ended August 3, 2013.

Commitments and Contingencies

6 Months Ended

Aug. 03, 2013

Commitments and Contingencies

Note 9. Commitments and Contingencies

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 August 3, 2013, these foundries had incurred approximately $302.9 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 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. 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.

As of August 3, 2014, the Company has recorded a total charge of $10.4 million related to certain legal proceedings described below in this section. The amount recorded does not relate to the litigation with Carnegie Mellon University (“CMU”). Other than these matters for which the Company has recognized in the consolidated financial statements, it has not recorded any amounts for contingent losses associated with these matters based on its belief that losses, while reasonably possible, are not probable. Unless otherwise stated, 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 during post trial proceedings, the judge could enhance the damages by an amount up to triple the damages awarded by the jury at trial. In addition, CMU has disclosed in its post trial motions that it is seeking pre-judgment interest up to $322 million, post-judgment interest, attorneys’ fees, and an injunction or ongoing royalties. Post-trial motions were heard on May 1 and 2, 2013. On June 26, 2013, the District Court denied CMU’s post-trial motion for attorney fees. On August 23, 2013, the District Court denied the motion for mistrial. The Company expects the District Court to issue its final judgment sometime in the next few months.

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. The Company believes the low end of the possible range of loss is zero, but it cannot reasonably estimate the upper range of the possible loss, as a number of factors (including finalization of the post-trial motions at the District Court) could significantly change the assessment of damages.

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. Oral arguments on the appeal were heard on June 18, 2013. On July 17, 2013, the Court of Appeals unanimously affirmed judgment in favor of MSI. It is unknown whether Jasmine will appeal to the California Supreme Court.

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 U.S. District Court for 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 issued a ruling on January 31, 2012. A supplemental claim construction hearing was held on May 3, 2012, and a ruling was issued on August 29, 2012. On August 16, 2013, the District Court granted defendants’ summary judgment motion to preclude the plaintiff from recovering certain pre-suit damages. 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 ruling was issued on August 6, 2012. Lake Cherokee’s damages claim, which excluded non-U.S. related sales as a result of the District Court’s summary judgment ruling, was approximately $193 million at the start of trial. MSI strongly disputed its liability and the damages claimed by Lake Cherokee. The case proceeded to trial on August 12, 2013. On August 16, 2013, an Eastern District of Texas jury returned a verdict and unanimously found that MSI did not infringe the Lake Cherokee patents in suit. On the same day, the Court entered judgment in MSI’s favor. It is unknown whether Lake Cherokee will appeal the jury’s verdict.

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 alleged infringement of U.S. Patent Nos. 6,047,354 and 5,796,978. In April 2013, the parties reached an agreement to dismiss all claims and counterclaims. On June 25, 2013, MSI was dismissed from the cases. The resolution did not have a significant impact on the Company’s financial statements.

MOSAID Litigation. On March 16, 2011, MOSAID Technologies Inc. filed suit in the U.S. District Court for the Eastern District of Texas against MSI and 16 other companies. The complaint alleges that defendants’ products, which operate in compliance with various IEEE 802.11standards, 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 was held on April 16, 2013 and a claim construction ruling was issued by the magistrate judge on April 22, 2013. On June 3, 2013, the District Court issued an order denying plaintiff’s motion for reconsideration and adopted the magistrate’s claim construction ruling. On August 20, 2013, MSI and MOSAID reached a tentative settlement related to the litigation between the parties. The tentative settlement did not have a significant impact on the Company’s financial statements.

Azure Networks Litigation. On March 22, 2011, Azure Networks, LLC and Tri-County Excelsior Foundation filed suit in the U.S. District Court for 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 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 claim construction ruling. On May 20, 2013, the District Court issued an order denying plaintiff’s motion for reconsideration and adopted the magistrate judge’s claim construction ruling. On May 30, 2013, the District Court entered a judgment of non-infringement. On June 24, 2013, Azure appealed.

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 a ruling was issued on May 30, 2013. On June 14, 2013, the District Court entered a judgment of non-infringement. On June 17, 2013, PMS appealed.

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. On June 25, 2013, MSI was dismissed from the case.

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. 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. 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 October 24, 2013. No trial date has been set.

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. A claim construction hearing is scheduled for December 13, 2013. No trial date has been set.

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.

Shareholders' Equity

6 Months Ended

Aug. 03, 2013

Shareholders' Equity

Note 10. Shareholders’ Equity

Stock Plans

Activity under the Company’s stock option plans for the six months ended August 3, 2013 is summarized below (in thousands, except per share amounts):


	Time-Based Options					Market-Based Options					Total
	Number of Shares			Weighted Average Exercise Price		Number of Shares			Weighted Average Exercise Price		Number of Shares			Weighted Average Exercise Price
Balance at February 2, 2013		49,637		$	13.28		2,759		$	15.43		52,396		$	13.39
Granted		18,381		$	10.76		—		$	—		18,381		$	10.76
Exercised		(4,873	)	$	7.53		—		$	—		(4,873	)	$	7.53
Canceled/Forfeited		(1,675	)	$	15.56		(42	)	$	15.43		(1,717	)	$	15.56

Balance at August 3, 2013		61,470		$	12.92		2,717		$	15.43		64,187		$	13.03

Vested or expected to vest at August 3, 2013		57,294		$	13.03

Exercisable at August 3, 2013		36,550		$	13.65

For time-based stock options vested and expected to vest at August 3, 2013, the aggregate intrinsic value was $110.6 million and the weighted average remaining contractual term was 5.6 years. For time-based stock options exercisable at August 3, 2013, the aggregate intrinsic value was $73.0 million and the weighted average remaining contractual term was 3.5 years. The aggregate intrinsic value of stock options exercised during the three months ended August 3, 2013 and July 28, 2012 was $5.0 million and $5.4 million, respectively. The aggregate intrinsic value of stock options exercised during the six months ended August 3, 2013 and July 28, 2012 was $16.1 million and $23.7 million, respectively. There was no aggregate intrinsic value for market-based stock options at August 3, 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 August 3, 2013 was 7.7 years. The Company’s closing stock price of $13.12 as reported on the NASDAQ Global Select Market for all in-the-money options as of August 2, 2013 was used to calculate the aggregate intrinsic value.

As of August 3, 2013, the unamortized compensation expense for time-based stock options was $78.0 million and market-based stock options was $2.0 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 3.3 years and 0.4 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 Units Outstanding			Weighted Average Grant Date Fair Value
Balance at February 2, 2013		12,739		$	15.78
Granted		3,075		$	10.43
Vested		(3,544	)	$	16.51
Canceled/Forfeited		(632	)	$	14.53

Balance at August 3, 2013		11,638		$	14.21

The aggregate intrinsic value of restricted stock units expected to vest as of August 3, 2013 was $137.6 million. The number of restricted stock units that are expected to vest is 10.5 million shares.

As of August 3, 2013, unamortized compensation expense related to restricted stock units was $123.7 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 2.1 years.

Employee Stock Purchase Plan

During the three and six months ended August 3, 2013, a total of 5.0 million shares were issued at a weighted-average price of $7.34 per share under the 2000 Employee Stock Purchase Plan, as amended and restated (the “ESPP”). During the three and six months ended July 28, 2012, a total of 3.3 million shares were issued at a weighted-average price of $10.40 per share under the ESPP. As of August 3, 2013, there was $40.9 million of unrecognized compensation cost related to the ESPP.

Share Repurchase Program

The Company repurchased 7.2 million of its common shares for $82.6 million in cash during the three months ended August 3, 2013 and 19.8 million of its common shares for $250.3 million in cash during the three months ended July 28, 2012. The Company repurchased 27.1 million common shares for $282.8 million in cash during the six months ended August 3, 2013 and 34.4 million common shares for $473.5 million in cash during the six months ended July 28, 2012.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 $0.1 million of repurchases during the three months ended August 3, 2013 was made within the final three days of the fiscal quarter and is included in accrued liabilities in the condensed consolidated balance sheet due to the standard three-day settlement period. As of August 3, 2013, a total of 210.8 million cumulative shares have been repurchased under the Company’s share repurchase program for a total $2.7 billion in cash and there was $329.8 million remaining available for future share repurchases.

Subsequent to the end of the quarter through August 29, 2013, the Company repurchased an additional 1.8 million of its common shares for $21.6 million at an average price per share of $11.85.

Dividend Program

Cash dividends of $0.06 per share were paid for a total of $29.7 million in the three months ended August 3, 2013 and cash dividends of $0.12 per share were paid for a total of $60.0 million in the six months ended August 3, 2013. Cash dividends of $0.06 per share were paid for a total of $33.5 million in the three and six months ended July 28, 2012. 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.

On August 22, 2013, the Company announced that its board of directors declared a cash dividend of $0.06 per share to be paid on October 3, 2013 to shareholders of record as of September 12, 2013.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: 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.(d),(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

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 210.5-02.29-31)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph d
-Article 4

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Share-Based Compensation

6 Months Ended

Aug. 03, 2013

Share-Based Compensation

Note 11. Share-Based Compensation

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


	Three Months Ended				Six Months Ended
	August 3, 2013		July 28, 2012		August 3, 2013		July 28, 2012
Cost of goods sold	$	1,868	$	1,775	$	3,735	$	3,898
Research and development		28,982		22,413		52,261		39,587
Selling and marketing		3,648		3,458		7,040		6,494
General and administrative		6,593		5,582		11,568		10,441

	$	41,091	$	33,228	$	74,604	$	60,420

Share-based compensation capitalized in inventory was $2.1 million at August 3, 2013 and $1.5 million at February 2, 2013.

Valuation Assumptions

The following weighted average assumptions were used for each respective period to calculate the fair value of each time-based stock option award on the date of grant using the Black-Scholes valuation model:


	Three Months Ended						Six Months Ended
	August 3, 2013			July 28, 2012			August 3, 2013			July 28, 2012
Time-based Stock Options:
Weighted average fair value	$	3.63		$	3.73		$	3.41		$	5.59
Expected volatility		44	%		46	%		45	%		44	%
Expected term (in years)		5.0			4.8			5.0			4.8
Risk-free interest rate		1.2	%		0.7	%		0.8	%		0.9	%
Expected dividend yield		2.1	%		2.0	%		2.4	%		0-2.0	%


	Three and Six Months Ended
	August 3, 2013			July 28, 2012
Employee Stock Purchase Plan:
Estimated fair value	$	3.45		$	3.77
Volatility		40	%		39	%
Expected term (in years)		1.3			1.3
Risk-free interest rate		0.2	%		0.2	%
Dividend yield		2.2	%		2.0	%

The Company and Basis of Presentation (Policies)	6 Months Ended
The Company and Basis of Presentation (Policies)	Aug. 03, 2013
The Company	*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 ARM-based microprocessor integrated circuits. The Company also 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.
Reclassification	*Reclassification* Certain amounts in the unaudited condensed consolidated financial statements and notes to the unaudited condensed consolidated financial statements for prior years have been reclassified to conform to the fiscal 2014 presentation. Net operating results have not been affected by these reclassifications.
Basis of Presentation	*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 2014 has a 52-week period and fiscal 2013 had a 53-week period. The unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. In the opinion of management, all adjustments consisting of normal and recurring entries considered necessary for a fair statement of the results for the interim periods have been included in the Company’s balance sheet as of August 3, 2013, the results of its operations for the three and six months ended August 3, 2013 and July 28, 2012, and its cash flows for the six months ended August 3, 2013 and July 28, 2012. The February 2, 2013 condensed consolidated balance sheet data was derived from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended February 2, 2013, but does not include all disclosures required for annual periods. These condensed consolidated financial statements and related notes are unaudited and should be read in conjunction with the Company’s audited financial statements and related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended February 2, 2013 as filed on March 29, 2013 with the Securities and Exchange Commission. The results of operations for the three and six months ended August 3, 2013 are not necessarily indicative of the results that may be expected for any other interim period or for the full fiscal year.
Use of Estimates	*Use of Estimates* The preparation of consolidated financial statements in conformity with 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 share-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	*Principles of Consolidation* The unaudited condensed 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.
Accounting Pronouncements Recently Adopted	*Accounting Pronouncements Recently Adopted* The Company adopted the new accounting standard regarding the testing of indefinite-lived intangible assets for impairment at the beginning of fiscal 2014. 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. The adoption of this guidance had no impact on the Company’s financial statements. The Company adopted the new accounting standard 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. The Company elected to disclose the information in the Notes to Unaudited Condensed Consolidated Financial Statements beginning in fiscal 2014.

- Definition

Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.

+ References + Details

Investments (Tables)

6 Months Ended

Aug. 03, 2013

Schedule of Available-for-sale Securities Reconciliation

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


	As of August 3, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Short-term investments:
Available-for-sale:
Corporate debt securities	$	584,124	$	1,929	$	(1,574	)	$	584,479
U.S. government and agency debt		316,003		195		(44	)		316,154
Time deposits		138,000		—		—			138,000
Asset backed securities		72,646		—		(269	)		72,377
Foreign government and agency debt		10,319		—		(21	)		10,298
Municipal debt securities		13,243		6		(14	)		13,235

Total short-term investments		1,134,335		2,130		(1,922	)		1,134,543
Long-term investments:
Available-for-sale:
Auction rate securities		19,150		—		(2,851	)		16,299

Total long-term investments		19,150		—		(2,851	)		16,299

Total investments	$	1,153,485	$	2,130	$	(4,773	)	$	1,150,842


	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
U.S. government and agency debt		318,226		258		(5	)		318,479
Time deposits		188,000		—		—			188,000
Asset backed securities		76,629		50		(64	)		76,615
Foreign government and agency debt		4,320		—		(1	)		4,319

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

Investments Classified by Contractual Maturity Date

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


	August 3, 2013				February 2, 2013
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year or less	$	438,999	$	439,334	$	519,006	$	519,537
Due between one and five years		681,370		681,316		627,769		629,991
Due over five years		33,116		30,192		36,970		34,278

	$	1,153,485	$	1,150,842	$	1,183,745	$	1,183,806

Unrealized Loss Position Investments


	August 3, 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	$	251,224	$	(1,574	)	$	—	$	—		$	251,224	$	(1,574	)
Asset backed securities		65,076		(254	)		1,921		(15	)		66,997		(269	)
U.S. government and agency debt		61,493		(44	)		—		—			61,493		(44	)
Municipal debt securities		7,025		(14	)		—		—			7,025		(14	)
Foreign government and agency debt		5,978		(21	)		—		—			5,978		(21	)
Auction rate securities		—		—			16,299		(2,851	)		16,299		(2,851	)

Total securities	$	390,796	$	(1,907	)	$	18,220	$	(2,866	)	$	409,016	$	(4,773	)


	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	)
Asset backed securities		43,882		(64	)		—		—			43,882		(64	)
U.S. government and agency debt		14,677		(5	)		—		—			14,677		(5	)
Foreign government and agency debt		4,319		(1	)		—		—			4,319		(1	)
Auction rate securities		—		—			16,769		(2,681	)		16,769		(2,681	)

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

Supplemental Financial Information (Tables)

6 Months Ended

Aug. 03, 2013

Schedule of Inventory, Current


	August 3, 2013		February 2, 2013
Inventories:
Work-in-process	$	217,971	$	140,805
Finished goods		117,349		109,615

Inventories	$	335,320	$	250,420

Property, Plant and Equipment


	August 3, 2013			February 2, 2013
Property and equipment, net:
Machinery and equipment	$	547,805		$	532,420
Buildings		144,320			144,320
Computer software		92,332			89,548
Land		53,373			53,373
Building improvements		49,555			49,516
Leasehold improvements		48,576			46,205
Furniture and fixtures		27,454			25,301
Construction in progress		2,455			5,333

		965,870			946,016
Less: Accumulated depreciation and amortization		(602,384	)		(573,045	)

Property and equipment, net	$	363,486		$	372,971

Other Noncurrent Liabilities


	August 3, 2013		February 2, 2013
Other non-current assets:
Technology and other licenses	$	78,697	$	81,523
Deferred tax assets		25,038		26,291
Investments in privately-held companies		13,946		14,486
Prepaid land use rights		13,900		14,056
Deposits		13,104		10,451
Other		16,889		18,078

Other non-current assets	$	161,574	$	164,885

Schedule of Accrued Liabilities


	August 3, 2013		February 2, 2013
Accrued liabilities:
Accrued rebates	$	43,755	$	51,712
Accrued legal expense		26,807		18,357
Accrued royalties		16,239		12,695
Technology license obligations		8,103		9,865
Accrued share repurchases		144		22,152
Other		26,758		29,210

Accrued liabilities	$	121,806	$	143,991

Schedule of Other Assets, Noncurrent


	August 3, 2013		February 2, 2013
Other non-current liabilities:
Technology license obligations	$	29,978	$	34,270
Long-term accrued employee compensation		6,152		6,205
Other		11,520		15,935

Other non-current liabilities	$	47,650	$	56,410

Changes in Accumulated Other Comprehensive (Loss) Income by Component

The changes in accumulated other comprehensive (loss) income by component are presented in the following tables (in thousands):


	Unrealized Gain (Loss) on Marketable Securities			Unrealized Gain (Loss) on Auction Rate Securities			Unrealized Gain (Loss) on Cash Flow Hedges			Total
Balance at February 2, 2013	$	2,742		$	(2,681	)	$	1,087		$	1,148
Other comprehensive income (loss) before reclassifications		(1,991	)		(170	)		1,921			(240	)
Amounts reclassified from accumulated other comprehensive income		(543	)		—			(1,937	)		(2,480	)

Net current-period other comprehensive loss		(2,534	)		(170	)		(16	)		(2,720	)

Balance at August 3, 2013	$	208		$	(2,851	)	$	1,071		$	(1,572	)


	Unrealized Gain (Loss) on Marketable Securities			Unrealized Gain (Loss) on Auction Rate Securities			Unrealized Gain (Loss) on Cash Flow Hedges			Total
Balance at January 28, 2012	$	3,702		$	(1,285	)	$	(1,641	)	$	776
Other comprehensive income (loss) before reclassifications		1,644			(112	)		(1,830	)		(298	)
Amounts reclassified from accumulated other comprehensive income		(771	)		—			1,671			900

Net current-period other comprehensive income (loss)		873			(112	)		(159	)		602

Balance at July 28, 2012	$	4,575		$	(1,397	)	$	(1,800	)	$	1,378

Changes in Accumulated Other Comprehensive (Loss) Income by Component

The amounts reclassified from accumulated other comprehensive (loss) income by components are presented in the following table (in thousands):


	August 3, 2013
Affected Line Item in the Statement Where Net Income is Presented	Three Months Ended		Six Months Ended
Available-for-sale securities:
Interest and other income, net	$	167	$	543
Cash flow hedges:
Cost of goods sold		47		108
Research and development		726		1,671
Selling and marketing		63		145
General and administrative		5		13

Total	$	1,008	$	2,480

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):


	Three Months Ended				Six Months Ended
	August 3, 2013		July 28, 2012		August 3, 2013		July 28, 2012
Numerator:
Net income	$	61,826	$	93,074	$	115,035	$	187,617

Denominator:
Weighted average common shares outstanding:		494,293		562,362		498,237		571,193
Effect of dilutive securities:
Common share-based awards		6,332		7,963		4,769		11,339

Weighted average shares — diluted		500,625		570,325		503,006		582,532

Net income per share:
Basic	$	0.13	$	0.17	$	0.23	$	0.33
Diluted	$	0.12	$	0.16	$	0.23	$	0.32


	Three Months Ended				Six Months Ended
	August 3, 2013		July 28, 2012		August 3, 2013		July 28, 2012
Anti-dilutive potential common shares:
Weighted average shares outstanding from stock options		44,661		29,488		33,413		26,553

Weighted average exercise price	$	14.71	$	17.52	$	13.48	$	17.86

Derivative Financial Instruments (Tables)

6 Months Ended

Aug. 03, 2013

Schedule of Derivative Instruments

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


	Buy Contracts
	August 3, 2013		February 2, 2013
Euro	$	5,553	$	—
Israeli shekel		36,621		38,249

	$	42,174	$	38,249

- 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
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41641-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41678-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41638-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 8: 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 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959

Reference 10: 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

Reference 11: 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=26873400&loc=d3e23780-122690

+ Details

Fair Value Measurements (Tables)

6 Months Ended

Aug. 03, 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 August 3, 2013
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	12,348		—		—	$	12,348
U.S. government and agencies		3,000		—		—		3,000
Time deposits		—		63,035		—		63,035
Municipal debt securities		—		6,600		—		6,600
Corporate debt securities		—		1,599		—		1,599
Short-term investments:
U.S. government and agency debt		316,154		—		—		316,154
Corporate debt securities		—		584,479		—		584,479
Time deposits		—		138,000		—		138,000
Asset backed securities		—		72,377		—		72,377
Foreign government and agency debt		—		10,298		—		10,298
Municipal debt securities		—		13,235		—		13,235
Prepaid expenses and other current assets:
Forward contracts		—		1,127		—		1,127
Long-term investments:
Auction rate securities		—		—		16,299		16,299
Other non-current assets:
Severance pay fund		—		2,232		—		2,232

Total assets	$	331,502	$	892,982	$	16,299	$	1,240,783


	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:
U.S. government and agency debt	$	27,029		—		—	$	27,029
Money market funds		21,523		—		—		21,523
Time deposits		—		119,874		—		119,874
Short-term investments:
U.S. government and agency debt		318,479		—		—		318,479
Corporate debt securities		—		579,624		—		579,624
Time deposits		—		188,000		—		188,000
Asset backed securities		—		76,615		—		76,615
Foreign government and agency debt		—		4,319		—		4,319
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

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

The following table summarizes the change in fair value for Level 3 items (in thousands):


	Six Months Ended
	August 3, 2013			July 28, 2012
Beginning balance	$	16,769		$	23,215
Sales and redemptions		(300	)		(5,000	)
Unrealized losses included in accumulated other comprehensive income		(170	)		(112	)

Ending balance	$	16,299		$	18,103

Goodwill and Acquired Intangible Assets, Net (Tables)

6 Months Ended

Aug. 03, 2013

Summary of Activity Related to Goodwill

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


Balance at February 2, 2013	$	2,032,138
Additions due to business combinations		400

Balance at August 3, 2013	$	2,032,538

Schedule of Finite-Lived Intangible Assets by Major Class

Acquired Intangible Assets, Net

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


		August 3, 2013							February 2, 2013
	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	$	(23,071	)	$	31,619	$	54,690	$	(18,552	)	$	36,138
Core technology	5 - 8 years		138,650		(132,960	)		5,690		138,650		(123,298	)		15,352
Trade names	5 years		1,300		(438	)		862		1,300		(308	)		992
Customer intangibles	5 - 7 years		89,400		(68,940	)		20,460		89,400		(61,927	)		27,473
IPR&D	*		13,086		—			13,086		9,700		—			9,700

Total intangible assets, net		$	297,126	$	(225,409	)	$	71,717	$	293,740	$	(204,085	)	$	89,655

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Based on the identified intangible assets recorded at August 3, 2013, the future amortization expense excluding IPR&D for the next five fiscal years is as follows (in thousands):


Fiscal year
Remainder of fiscal 2014	$	14,454
2015		14,942
2016		12,203
2017		11,018
2018		5,590
Thereafter		424

	$	58,631

Shareholders' Equity (Tables)

6 Months Ended

Aug. 03, 2013

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

Activity under the Company’s stock option plans for the six months ended August 3, 2013 is summarized below (in thousands, except per share amounts):


	Time-Based Options					Market-Based Options					Total
	Number of Shares			Weighted Average Exercise Price		Number of Shares			Weighted Average Exercise Price		Number of Shares			Weighted Average Exercise Price
Balance at February 2, 2013		49,637		$	13.28		2,759		$	15.43		52,396		$	13.39
Granted		18,381		$	10.76		—		$	—		18,381		$	10.76
Exercised		(4,873	)	$	7.53		—		$	—		(4,873	)	$	7.53
Canceled/Forfeited		(1,675	)	$	15.56		(42	)	$	15.43		(1,717	)	$	15.56

Balance at August 3, 2013		61,470		$	12.92		2,717		$	15.43		64,187		$	13.03

Vested or expected to vest at August 3, 2013		57,294		$	13.03

Exercisable at August 3, 2013		36,550		$	13.65

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 Units Outstanding			Weighted Average Grant Date Fair Value
Balance at February 2, 2013		12,739		$	15.78
Granted		3,075		$	10.43
Vested		(3,544	)	$	16.51
Canceled/Forfeited		(632	)	$	14.53

Balance at August 3, 2013		11,638		$	14.21

Share-Based Compensation (Tables)

6 Months Ended

Aug. 03, 2013

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):


	Three Months Ended				Six Months Ended
	August 3, 2013		July 28, 2012		August 3, 2013		July 28, 2012
Cost of goods sold	$	1,868	$	1,775	$	3,735	$	3,898
Research and development		28,982		22,413		52,261		39,587
Selling and marketing		3,648		3,458		7,040		6,494
General and administrative		6,593		5,582		11,568		10,441

	$	41,091	$	33,228	$	74,604	$	60,420

Employee Stock Purchase Plan

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


	Three and Six Months Ended
	August 3, 2013			July 28, 2012
Employee Stock Purchase Plan:
Estimated fair value	$	3.45		$	3.77
Volatility		40	%		39	%
Expected term (in years)		1.3			1.3
Risk-free interest rate		0.2	%		0.2	%
Dividend yield		2.2	%		2.0	%

Time Based Option Award

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


	Three Months Ended						Six Months Ended
	August 3, 2013			July 28, 2012			August 3, 2013			July 28, 2012
Time-based Stock Options:
Weighted average fair value	$	3.63		$	3.73		$	3.41		$	5.59
Expected volatility		44	%		46	%		45	%		44	%
Expected term (in years)		5.0			4.8			5.0			4.8
Risk-free interest rate		1.2	%		0.7	%		0.8	%		0.9	%
Expected dividend yield		2.1	%		2.0	%		2.4	%		0-2.0	%

Summary of Investments (Detail) - USD ($) $ in Thousands	Aug. 03, 2013	Feb. 02, 2013
Gain (Loss) on Investments [Line Items]
Estimated Fair Value	$ 1,150,842	$ 1,183,806
Short-term Investments
Gain (Loss) on Investments [Line Items]
Amortized Cost	1,134,335	1,164,295
Gross Unrealized Gains	2,130	3,194
Gross Unrealized Losses	(1,922)	(452)
Estimated Fair Value	1,134,543	1,167,037
Short-term Investments \| Available-for-sale \| Corporate debt securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	584,124	577,120
Gross Unrealized Gains	1,929	2,886
Gross Unrealized Losses	(1,574)	(382)
Estimated Fair Value	584,479	579,624
Short-term Investments \| Available-for-sale \| U.S. government and agency debt
Gain (Loss) on Investments [Line Items]
Amortized Cost	316,003	318,226
Gross Unrealized Gains	195	258
Gross Unrealized Losses	(44)	(5)
Estimated Fair Value	316,154	318,479
Short-term Investments \| Available-for-sale \| Time Deposits
Gain (Loss) on Investments [Line Items]
Amortized Cost	138,000	188,000
Estimated Fair Value	138,000	188,000
Short-term Investments \| Available-for-sale \| Asset-backed Securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	72,646	76,629
Gross Unrealized Gains		50
Gross Unrealized Losses	(269)	(64)
Estimated Fair Value	72,377	76,615
Short-term Investments \| Available-for-sale \| Foreign government and agency debt
Gain (Loss) on Investments [Line Items]
Amortized Cost	10,319	4,320
Gross Unrealized Losses	(21)	(1)
Estimated Fair Value	10,298	4,319
Short-term Investments \| Available-for-sale \| Municipal debt securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	13,243
Gross Unrealized Gains	6
Gross Unrealized Losses	(14)
Estimated Fair Value	13,235
Long-term investments
Gain (Loss) on Investments [Line Items]
Amortized Cost	19,150	19,450
Gross Unrealized Losses	(2,851)	(2,681)
Estimated Fair Value	16,299	16,769
Long-term investments \| Auction rate securities
Gain (Loss) on Investments [Line Items]
Gross Unrealized Losses	(2,900)
Long-term investments \| Available-for-sale \| Auction rate securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	19,150	19,450
Gross Unrealized Losses	(2,851)	(2,681)
Estimated Fair Value	16,299	16,769
Investments
Gain (Loss) on Investments [Line Items]
Amortized Cost	1,153,485	1,183,745
Gross Unrealized Gains	2,130	3,194
Gross Unrealized Losses	(4,773)	(3,133)
Estimated Fair Value	$ 1,150,842	$ 1,183,806

Investments - Additional Information (Detail) - USD ($) $ in Thousands	Aug. 03, 2013	Feb. 02, 2013
Gain (Loss) on Investments [Line Items]
Cash, cash equivalents and short-term investments	$ 1,700,000
Long-term investments
Gain (Loss) on Investments [Line Items]
Gross Unrealized Losses	2,851	$ 2,681
Long-term investments \| Auction rate securities
Gain (Loss) on Investments [Line Items]
Par value of auction rate securities	19,200
Gross Unrealized Losses	$ 2,900

- 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	Aug. 03, 2013	Feb. 02, 2013
Amortized Cost
Due in one year or less	$ 438,999	$ 519,006
Due between one and five years	681,370	627,769
Due over five years	33,116	36,970
Marketable Securities, Debt Maturities, Amortized Cost, Total	1,153,485	1,183,745
Estimated Fair Value
Due in one year or less	439,334	519,537
Due between one and five years	681,316	629,991
Due over five years	30,192	34,278
Estimated Fair Value	$ 1,150,842	$ 1,183,806

Summary of Investments Gross Unrealized Losses and Fair Value (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Aug. 03, 2013	Feb. 02, 2013
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	$ 390,796	$ 204,793
Less than 12 months Unrealized Losses	(1,907)	(452)
12 months or more Fair Value	18,220	16,769
12 months or more Unrealized Losses	(2,866)	(2,681)
Total Fair Value	409,016	221,562
Total Unrealized Losses	(4,773)	(3,133)
Corporate debt securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	251,224	141,915
Less than 12 months Unrealized Losses	(1,574)	(382)
Total Fair Value	251,224	141,915
Total Unrealized Losses	(1,574)	(382)
Asset-backed Securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	65,076	43,882
Less than 12 months Unrealized Losses	(254)	(64)
12 months or more Fair Value	1,921
12 months or more Unrealized Losses	(15)
Total Fair Value	66,997	43,882
Total Unrealized Losses	(269)	(64)
U.S. government and agency debt
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	61,493	14,677
Less than 12 months Unrealized Losses	(44)	(5)
Total Fair Value	61,493	14,677
Total Unrealized Losses	(44)	(5)
Municipal debt securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	7,025
Less than 12 months Unrealized Losses	(14)
Total Fair Value	7,025
Total Unrealized Losses	(14)
Foreign government and agency debt
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	5,978	4,319
Less than 12 months Unrealized Losses	(21)	(1)
Total Fair Value	5,978	4,319
Total Unrealized Losses	(21)	(1)
Auction rate securities
Investments, Unrealized Loss Position [Line Items]
12 months or more Fair Value	16,299	16,769
12 months or more Unrealized Losses	(2,851)	(2,681)
Total Fair Value	16,299	16,769
Total Unrealized Losses	$ (2,851)	$ (2,681)

Inventories (Detail) - USD ($) $ in Thousands	Aug. 03, 2013	Feb. 02, 2013
Inventory [Line Items]
Work-in-process	$ 217,971	$ 140,805
Finished goods	117,349	109,615
Inventories	$ 335,320	$ 250,420

Property and Equipment Net (Detail) - USD ($) $ in Thousands	Aug. 03, 2013	Feb. 02, 2013
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 547,805	$ 532,420
Buildings	144,320	144,320
Computer software	92,332	89,548
Land	53,373	53,373
Building improvements	49,555	49,516
Leasehold improvements	48,576	46,205
Furniture and fixtures	27,454	25,301
Construction in progress	2,455	5,333
Property, Plant and Equipment, Gross, Total	965,870	946,016
Less: Accumulated depreciation and amortization	(602,384)	(573,045)
Property and equipment, net	$ 363,486	$ 372,971

Other Non Current Assets (Detail) - USD ($) $ in Thousands	Aug. 03, 2013	Feb. 02, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Technology and other licenses	$ 78,697	$ 81,523
Deferred tax assets	25,038	26,291
Investments in privately-held companies	13,946	14,486
Prepaid land use rights	13,900	14,056
Deposits	13,104	10,451
Other	16,889	18,078
Other non-current assets	$ 161,574	$ 164,885

Accrued Liabilities (Detail) - USD ($) $ in Thousands	Aug. 03, 2013	Feb. 02, 2013
Schedule of Accrued Liabilities [Line Items]
Accrued rebates	$ 43,755	$ 51,712
Accrued legal expense	26,807	18,357
Accrued royalties	16,239	12,695
Technology license obligations	8,103	9,865
Accrued share repurchases	144	22,152
Other	26,758	29,210
Accrued liabilities	$ 121,806	$ 143,991

Other Long Term Liabilities (Detail) - USD ($) $ in Thousands	Aug. 03, 2013	Feb. 02, 2013
Schedule of Other Liabilities [Line Items]
Technology license obligations	$ 29,978	$ 34,270
Long-term accrued employee compensation	6,152	6,205
Other	11,520	15,935
Other non-current liabilities	$ 47,650	$ 56,410

Changes in Accumulated Other Comprehensive (Loss) Income by Component (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 1,148	$ 776
Other comprehensive income (loss) before reclassifications			(240)	(298)
Amounts reclassified from accumulated other comprehensive income			(2,480)	900
Other comprehensive (loss) income, net	$ (3,748)	$ (939)	(2,720)	602
Ending Balance	(1,572)	1,378	(1,572)	1,378
Interest and other income, net	8,253	5,864	11,413	6,921
Cost of goods sold	(386,059)	(381,839)	(721,497)	(748,161)
Research and development	(292,642)	(264,175)	(571,694)	(520,145)
Selling and marketing	(38,548)	(41,034)	(78,537)	(81,100)
General and administrative	(27,192)	(25,718)	(53,515)	(51,423)
Total	61,826	93,074	115,035	187,617
Reclassification out of Accumulated Other Comprehensive Income
Other Comprehensive Income (Loss) [Line Items]
Total	1,008		2,480
Unrealized Gain (Loss) on Cash Flow Hedges
Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			1,087	(1,641)
Other comprehensive income (loss) before reclassifications			1,921	(1,830)
Amounts reclassified from accumulated other comprehensive income			(1,937)	1,671
Other comprehensive (loss) income, net			(16)	(159)
Ending Balance	1,071	(1,800)	1,071	(1,800)
Unrealized Gain (Loss) on Cash Flow Hedges \| Reclassification out of Accumulated Other Comprehensive Income
Other Comprehensive Income (Loss) [Line Items]
Cost of goods sold	47		108
Research and development	726		1,671
Selling and marketing	63		145
General and administrative	5		13
Unrealized Gain (Loss) on Marketable Securities
Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			2,742	3,702
Other comprehensive income (loss) before reclassifications			(1,991)	1,644
Amounts reclassified from accumulated other comprehensive income			(543)	(771)
Other comprehensive (loss) income, net			(2,534)	873
Ending Balance	208	4,575	208	4,575
Unrealized Gain (Loss) on Marketable Securities \| Reclassification out of Accumulated Other Comprehensive Income
Other Comprehensive Income (Loss) [Line Items]
Interest and other income, net	167		543
Auction rate securities
Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(2,681)	(1,285)
Other comprehensive income (loss) before reclassifications			(170)	(112)
Other comprehensive (loss) income, net			(170)	(112)
Ending Balance	$ (2,851)	$ (1,397)	$ (2,851)	$ (1,397)

Computations of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Numerator:
Net income	$ 61,826	$ 93,074	$ 115,035	$ 187,617
Denominator:
Weighted average common shares outstanding:	494,293	562,362	498,237	571,193
Effect of dilutive securities:
Common share-based awards	6,332	7,963	4,769	11,339
Weighted average shares - diluted	500,625	570,325	503,006	582,532
Basic	$ 0.13	$ 0.17	$ 0.23	$ 0.33
Diluted	$ 0.12	$ 0.16	$ 0.23	$ 0.32
Employee Stock Option
Effect of dilutive securities:
Weighted average shares outstanding from stock options	44,661	29,488	33,413	26,553
Weighted average exercise price	$ 14.71	$ 17.52	$ 13.48	$ 17.86

Supplemental Financial Information - Additional Information (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Market Based Option Award
Computation Of Earnings Per Share Line Items
Anti-dilutive options excluded from the computation of diluted net income per share	2.7	3.1	2.7	3.1

Notional Amounts of Outstanding Foreign Currency Forward Contracts (Detail) - Foreign Exchange Contract - USD ($) $ in Thousands	Aug. 03, 2013	Feb. 02, 2013
Derivative [Line Items]
Buy Contracts	$ 42,174	$ 38,249
Euro
Derivative [Line Items]
Buy Contracts	5,553
Israeli shekel
Derivative [Line Items]
Buy Contracts	$ 36,621	$ 38,249

Fair Value Measurements - Additional Information (Detail)	Aug. 03, 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	Aug. 03, 2013	Feb. 02, 2013
Assets
Total assets	$ 1,240,783	$ 1,355,353
Cash equivalents \| Money market funds
Assets
Cash equivalents	12,348	21,523
Cash equivalents \| U.S. government and agency debt
Assets
Cash equivalents	3,000	27,029
Cash equivalents \| Time deposits
Assets
Cash equivalents	63,035	119,874
Cash equivalents \| Municipal debt securities
Assets
Cash equivalents	6,600
Cash equivalents \| Corporate debt securities
Assets
Cash equivalents	1,599
Short-term Investments \| U.S. government and agency debt
Assets
Investments	316,154	318,479
Short-term Investments \| Time deposits
Assets
Investments	138,000	188,000
Short-term Investments \| Municipal debt securities
Assets
Investments	13,235
Short-term Investments \| Corporate debt securities
Assets
Investments	584,479	579,624
Short-term Investments \| Asset-backed Securities
Assets
Investments	72,377	76,615
Short-term Investments \| Foreign government and agency debt
Assets
Investments	10,298	4,319
Prepaid expenses and other current assets \| Forward contracts
Assets
Prepaid expenses and other current assets	1,127	1,144
Long-term investments \| Auction rate securities
Assets
Investments	16,299	16,769
Other non-current assets \| Severance Pay Fund
Assets
Other non-current asset	2,232	1,977
Level 1
Assets
Total assets	331,502	367,031
Level 1 \| Cash equivalents \| Money market funds
Assets
Cash equivalents	12,348	21,523
Level 1 \| Cash equivalents \| U.S. government and agency debt
Assets
Cash equivalents	3,000	27,029
Level 1 \| Short-term Investments \| U.S. government and agency debt
Assets
Investments	316,154	318,479
Level 2
Assets
Total assets	892,982	971,553
Level 2 \| Cash equivalents \| Time deposits
Assets
Cash equivalents	63,035	119,874
Level 2 \| Cash equivalents \| Municipal debt securities
Assets
Cash equivalents	6,600
Level 2 \| Cash equivalents \| Corporate debt securities
Assets
Cash equivalents	1,599
Level 2 \| Short-term Investments \| Time deposits
Assets
Investments	138,000	188,000
Level 2 \| Short-term Investments \| Municipal debt securities
Assets
Investments	13,235
Level 2 \| Short-term Investments \| Corporate debt securities
Assets
Investments	584,479	579,624
Level 2 \| Short-term Investments \| Asset-backed Securities
Assets
Investments	72,377	76,615
Level 2 \| Short-term Investments \| Foreign government and agency debt
Assets
Investments	10,298	4,319
Level 2 \| Prepaid expenses and other current assets \| Forward contracts
Assets
Prepaid expenses and other current assets	1,127	1,144
Level 2 \| Other non-current assets \| Severance Pay Fund
Assets
Other non-current asset	2,232	1,977
Level 3
Assets
Total assets	16,299	16,769
Level 3 \| Long-term investments \| Auction rate securities
Assets
Investments	$ 16,299	$ 16,769

Summary of Change in Fair Values for Level Three Items (Detail) - USD ($) $ in Thousands	6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 16,769	$ 23,215
Sales and redemptions	(300)	(5,000)
Unrealized losses included in accumulated other comprehensive income	(170)	(112)
Ending balance	$ 16,299	$ 18,103

Carrying Value of Goodwill (Detail) $ in Thousands	6 Months Ended
Carrying Value of Goodwill (Detail) $ in Thousands	Aug. 03, 2013 USD ($)
Goodwill [Line Items]
Beginning balance	$ 2,032,138
Additions due to business combinations	400
Ending balance	$ 2,032,538

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

6 Months Ended

Aug. 03, 2013

Feb. 02, 2013

Acquired Finite-Lived Intangible Assets [Line Items]

Gross Carrying Amounts

$ 297,126

$ 293,740

Accumulated Amortization and Write-Offs

(225,409)

(204,085)

Net Carrying Amount

71,717

89,655

Purchased technology

Acquired Finite-Lived Intangible Assets [Line Items]

Gross Carrying Amounts

54,690

Accumulated Amortization and Write-Offs

(23,071)

(18,552)

Net Carrying Amount

$ 31,619

36,138

Purchased technology | Minimum

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

4 years

Purchased technology | Maximum

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

7 years

Core technology

Acquired Finite-Lived Intangible Assets [Line Items]

Gross Carrying Amounts

$ 138,650

138,650

Accumulated Amortization and Write-Offs

(132,960)

(123,298)

Net Carrying Amount

$ 5,690

15,352

Core technology | Minimum

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

5 years

Core technology | Maximum

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

8 years

Trade names

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

5 years

Gross Carrying Amounts

$ 1,300

1,300

Accumulated Amortization and Write-Offs

(438)

(308)

Net Carrying Amount

862

992

Customer intangibles

Acquired Finite-Lived Intangible Assets [Line Items]

Gross Carrying Amounts

89,400

Accumulated Amortization and Write-Offs

(68,940)

(61,927)

Net Carrying Amount

$ 20,460

27,473

Customer intangibles | Minimum

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

5 years

Customer intangibles | Maximum

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

7 years

In-process research and development

Acquired Finite-Lived Intangible Assets [Line Items]

Useful Lives

^[1]

Gross Carrying Amounts

$ 13,086

9,700

Net Carrying Amount

$ 13,086

$ 9,700

[1]

Upon completion of the projects, the related in-process research and development ("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 write down the related IPR&D asset.

Future Amortization Expense of Identified Intangibles (Detail) - In Process Research and Development Excluded $ in Thousands	Aug. 03, 2013 USD ($)
Fiscal year
Remainder of fiscal 2014	$ 14,454
2015	14,942
2016	12,203
2017	11,018
2018	5,590
Thereafter	424
Finite-Lived Intangible Assets, Net, Total	$ 58,631

Income Tax - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Income Taxes [Line Items]
Current income tax liability	$ 5.2	$ 5.9	$ 7.0	$ 8.6
Reduction in unrecognized tax benefits arising from the expiration of statute of limitations	6.8	$ 3.4	16.5	$ 6.0
Settlements of audits in non-U.S. jurisdictions			0.7
Estimated possible decrease of uncertain tax positions within next 12 months	(30.0)		(30.0)
Tax holidays, tax savings amount			$ 9.2
Maximum
Income Taxes [Line Items]
Tax holidays, per share effect on earning			$ 0.01
Audit Settlement One
Income Taxes [Line Items]
Settlements of audits in non-U.S. jurisdictions	3.5
Audit Settlement Two
Income Taxes [Line Items]
Settlements of audits in non-U.S. jurisdictions	$ 4.1

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended
	Dec. 26, 2012	Aug. 06, 2012	Aug. 03, 2013
Commitments and Contingencies Disclosure [Line Items]
Charges related to certain current legal proceedings			$ 10,400
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	$ 1,170,000
Pre-judgment interest	322,000
Low end of the possible range of loss	$ 0
Lake Cherokee Patent Litigation
Commitments and Contingencies Disclosure [Line Items]
Date of lawsuit filed		Jun. 30, 2010
Previously claimed damages reduced amount		$ 193,000
Manufacturing Expense
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment, outstanding commitment			$ 302,900

Stock Option Plan Activity (Detail) shares in Thousands	6 Months Ended
Stock Option Plan Activity (Detail) shares in Thousands	Aug. 03, 2013 $ / shares shares
Options Outstanding
Beginning Balance \| shares	52,396
Granted \| shares	18,381
Exercised \| shares	(4,873)
Canceled/Forfeited \| shares	(1,717)
Ending Balance \| shares	64,187
Weighted Average Exercise Price
Beginning Balance \| $ / shares	$ 13.39
Granted \| $ / shares	10.76
Exercised \| $ / shares	7.53
Canceled/Forfeited \| $ / shares	15.56
Ending Balance \| $ / shares	$ 13.03
Time Based Option Award
Options Outstanding
Beginning Balance \| shares	49,637
Granted \| shares	18,381
Exercised \| shares	(4,873)
Canceled/Forfeited \| shares	(1,675)
Ending Balance \| shares	61,470
Vested or expected to vest at August 3, 2013 \| shares	57,294
Exercisable at August 3, 2013 \| shares	36,550
Weighted Average Exercise Price
Beginning Balance \| $ / shares	$ 13.28
Granted \| $ / shares	10.76
Exercised \| $ / shares	7.53
Canceled/Forfeited \| $ / shares	15.56
Ending Balance \| $ / shares	12.92
Vested or expected to vest at August 3, 2013 \| $ / shares	13.03
Exercisable at August 3, 2013 \| $ / shares	$ 13.65
Market Based Option Award
Options Outstanding
Beginning Balance \| shares	2,759
Canceled/Forfeited \| shares	(42)
Ending Balance \| shares	2,717
Weighted Average Exercise Price
Beginning Balance \| $ / shares	$ 15.43
Canceled/Forfeited \| $ / shares	15.43
Ending Balance \| $ / shares	$ 15.43

Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Aug. 29, 2013	Aug. 22, 2013	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012	Aug. 02, 2013
Stockholders Equity Note [Line Items]
Aggregate intrinsic value of stock options exercised			$ 5,000,000	$ 5,400,000	$ 16,100,000	$ 23,700,000
Closing stock price							$ 13.12
Dividend per share, paid			$ 0.06	$ 0.06	$ 0.12	$ 0.06
Total dividends paid			$ 29,700,000	$ 33,500,000	$ 60,044,000	$ 33,537,000
Common Stock Repurchase Program
Stockholders Equity Note [Line Items]
Share repurchase program, shares repurchased			7.2	19.8	27.1	34.4
Share repurchase program, amount repurchased			$ 82,600,000	$ 250,300,000	$ 282,800,000	$ 473,500,000
Share repurchase program, shares repurchased			210.8		210.8
Share repurchase program, total amount of repurchases			$ 2,700,000,000		$ 2,700,000,000
Share repurchase program, remaining amount			329,800,000		329,800,000
Common Stock Repurchase Program \| Repurchase During Final Three Days of Fiscal Quarter
Stockholders Equity Note [Line Items]
Repurchase of common stock			100,000
Employee Stock Purchase Plan, 2000 Restated Plan
Stockholders Equity Note [Line Items]
Unrecognized share based compensation cost			$ 40,900,000		$ 40,900,000
Employee stock purchase plan, shares issued			5.0	3.3	5.0	3.3
Employee stock purchase plan, weighted-average price			$ 7.34	$ 10.40	$ 7.34	$ 10.40
Subsequent Event \| Dividend Declared
Stockholders Equity Note [Line Items]
Dividend per share, paid		$ 0.06
Subsequent Event \| Common Stock Repurchase Program
Stockholders Equity Note [Line Items]
Share repurchase program, shares repurchased	1.8
Share repurchase program, amount repurchased	$ 21,600,000
Share repurchase program, additional shares repurchased, average price per share	$ 11.85
Time Based Option Award
Stockholders Equity Note [Line Items]
Options vested and expected to vest, aggregate intrinsic value			$ 110,600,000		$ 110,600,000
Options vested and expected to vest, weighted average remaining contractual term (in years)					5 years 7 months 6 days
Options exercisable, aggregate intrinsic value			73,000,000		$ 73,000,000
Options exercisable, weighted average remaining contractual term (in years)					3 years 6 months
Unrecognized share based compensation cost			78,000,000		$ 78,000,000
Unrecognized share based compensation cost, weighted-average period of recognition					3 years 3 months 18 days
Market Based Option Award
Stockholders Equity Note [Line Items]
Options vested and expected to vest, aggregate intrinsic value			0		$ 0
Options vested and expected to vest, weighted average remaining contractual term (in years)					7 years 8 months 12 days
Unrecognized share based compensation cost			2,000,000		$ 2,000,000
Unrecognized share based compensation cost, weighted-average period of recognition					4 months 24 days
Restricted Stock Units (RSUs)
Stockholders Equity Note [Line Items]
Unrecognized share based compensation cost			123,700,000		$ 123,700,000
Unrecognized share based compensation cost, weighted-average period of recognition					2 years 1 month 6 days
Restricted stock units, aggregate intrinsic value			$ 137,600,000		$ 137,600,000
Restricted stock units vested and expected to vest			10.5		10.5

Activity Related to Non Vested Portion of Restricted Stock Units (Detail) - Restricted Stock Units (RSUs) shares in Thousands	6 Months Ended
	Aug. 03, 2013 $ / shares shares
Restricted Stock Units Outstanding
Beginning Balance \| shares	12,739
Granted \| shares	3,075
Vested \| shares	(3,544)
Canceled/Forfeited \| shares	(632)
Ending Balance \| shares	11,638
Weighted Average Grant Date Fair Value
Beginning Balance \| $ / shares	$ 15.78
Granted \| $ / shares	10.43
Vested \| $ / shares	16.51
Canceled/Forfeited \| $ / shares	14.53
Ending Balance \| $ / shares	$ 14.21

Total Stock Compensation by Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 41,091	$ 33,228	$ 74,604	$ 60,420
Cost of goods sold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	1,868	1,775	3,735	3,898
Research and Development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	28,982	22,413	52,261	39,587
Selling and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	3,648	3,458	7,040	6,494
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 6,593	$ 5,582	$ 11,568	$ 10,441

Share Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	Aug. 03, 2013	Feb. 02, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation capitalized in inventory	$ 2.1	$ 1.5

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	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value	$ 3.63	$ 3.73	$ 3.41	$ 5.59
Expected volatility	44.00%	46.00%	45.00%	44.00%
Expected term (in years)	5 years	4 years 9 months 18 days	5 years	4 years 9 months 18 days
Risk-free interest rate	1.20%	0.70%	0.80%	0.90%
Expected dividend yield	2.10%	2.00%	2.40%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield				0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield				2.00%

Valuation Assumptions (Detail) - Employee Stock Purchase Plan - $ / shares	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated fair value	$ 3.45	$ 3.77	$ 3.45	$ 3.77
Volatility	40.00%	39.00%	40.00%	39.00%
Expected term (in years)	1 year 3 months 18 days	1 year 3 months 18 days	1 year 3 months 18 days	1 year 3 months 18 days
Risk-free interest rate	0.20%	0.20%	0.20%	0.20%
Dividend yield	2.20%	2.00%	2.20%	2.00%