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Document and Entity Information - shares shares in Millions	3 Months Ended
Document and Entity Information - shares shares in Millions	May 04, 2019	May 30, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	May 04, 2019
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Trading Symbol	MRVL
Entity Registrant Name	MARVELL TECHNOLOGY GROUP LTD
Entity Central Index Key	0001058057
Current Fiscal Year End Date	--02-01
Entity File Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		661.0

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019
Current assets:
Cash and cash equivalents	$ 571,893	$ 582,410
Accounts receivable, net	470,347	493,122
Inventories	260,981	276,005
Prepaid expenses and other current assets	39,711	43,721
Total current assets	1,342,932	1,395,258
Property and equipment, net	326,599	318,978
Goodwill	5,500,000	5,494,505
Acquired intangible assets, net	2,480,942	2,560,682
Other non-current assets	403,240	247,329
Total assets	10,048,218	10,016,752
Current liabilities:
Accounts payable	191,249	185,362
Accrued liabilities	333,680	335,509
Accrued employee compensation	122,441	115,925
Total current liabilities	647,370	636,796
Long-term debt	1,684,281	1,732,699
Non-current income taxes payable	56,621	59,221
Deferred tax liabilities	250,137	246,252
Other non-current liabilities	179,677	35,374
Total liabilities	2,818,086	2,710,342
Commitments and contingencies (Note 10)
Shareholders’ equity:
Common shares, $0.002 par value	1,323	1,317
Additional paid-in capital	6,200,231	6,188,598
Retained earnings	1,028,578	1,116,495
Total shareholders’ equity	7,230,132	7,306,410
Total liabilities and shareholders’ equity	$ 10,048,218	$ 10,016,752

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	May 04, 2019	Feb. 02, 2019
Statement of Financial Position [Abstract]
Common shares, par value (in usd per share)	$ 0.002	$ 0.002

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Income Statement [Abstract]
Net revenue	$ 662,452	$ 604,631
Cost of goods sold	301,024	228,938
Gross profit	361,428	375,693
Operating expenses:
Research and development	266,867	176,734
Selling, general and administrative	110,005	72,313
Restructuring related charges	5,682	1,567
Total operating expenses	382,554	250,614
Operating income (loss)	(21,126)	125,079
Interest income	1,268	6,069
Interest expense	(21,203)	(244)
Other income (loss), net	(116)	1,471
Interest and other income (loss), net	(20,051)	7,296
Income (loss) before income taxes	(41,177)	132,375
Provision for income taxes	7,273	3,763
Net income (loss)	$ (48,450)	$ 128,612
Net income (loss) per share - Basic	$ (0.07)	$ 0.26
Net income (loss) per share - Diluted	$ (0.07)	$ 0.25
Weighted average shares:
Basic (in shares)	658,963	497,335
Diluted (in shares)	658,963	508,716

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (48,450)	$ 128,612
Other comprehensive income (loss), net of tax:
Net change in unrealized gain (loss) on marketable securities	0	(82)
Other comprehensive income (loss), net of tax	0	(82)
Comprehensive income (loss), net of tax	$ (48,450)	$ 128,530

- Definition

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

+ References + Details

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in-Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Balance (in shares) at Feb. 03, 2018		495,913
Balance at beginning of period at Feb. 03, 2018	$ 4,141,413	$ 991	$ 2,733,292	$ (2,322)	$ 1,409,452
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares in connection with equity incentive plans (in shares)		3,837
Issuance of common shares in connection with equity incentive plans	11,054	$ 9	11,045
Tax withholdings related to net share settlement of restricted stock units	(23,892)		(23,892)
Share-based compensation	24,033		24,033
Cash dividends declared and paid (cumulatively $0.06 per share)	(29,798)				(29,798)
Net income (loss)	128,612				128,612
Other comprehensive gain (loss)	(82)			(82)
Balance (in shares) at May. 05, 2018		499,750
Balance at end of period at May. 05, 2018	4,285,511	$ 1,000	2,744,478	(2,404)	1,542,437
Balance (in shares) at Feb. 02, 2019		658,514
Balance at beginning of period at Feb. 02, 2019	7,306,410	$ 1,317	6,188,598	0	1,116,495
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares in connection with equity incentive plans (in shares)		5,120
Issuance of common shares in connection with equity incentive plans	30,996	$ 11	30,985
Tax withholdings related to net share settlement of restricted stock units	(28,756)		(28,756)
Share-based compensation	59,422		59,422
Repurchase of common stock (in shares)		(2,359)
Repurchase of common stock	(50,023)	$ (5)	(50,018)
Cash dividends declared and paid (cumulatively $0.06 per share)	(39,467)				(39,467)
Net income (loss)	(48,450)				(48,450)
Balance (in shares) at May. 04, 2019		661,275
Balance at end of period at May. 04, 2019	$ 7,230,132	$ 1,323	$ 6,200,231	$ 0	$ 1,028,578

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	May 04, 2019	May 05, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in usd per share)	$ 0.06	$ 0.06
Cash dividends paid (in usd per share)	$ 0.06	$ 0.06

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Cash flows from operating activities:
Net income (loss)	$ (48,450)	$ 128,612
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	44,298	20,343
Share-based compensation	58,598	23,852
Amortization of acquired intangible assets	79,740	0
Amortization of deferred debt issuance costs and debt discounts	1,681	0
Other non-cash expense, net	5,252	891
Deferred income taxes	4,356	824
Changes in assets and liabilities:
Accounts receivable	22,775	(47,393)
Inventories	15,848	2,680
Prepaid expenses and other assets	8,004	(14,108)
Accounts payable	(1,873)	14,744
Accrued liabilities and other non-current liabilities	(30,929)	20,439
Accrued employee compensation	6,516	(22,110)
Net cash provided by operating activities	165,816	128,774
Cash flows from investing activities:
Purchases of available-for-sale securities	0	(13,457)
Sales of available-for-sale securities	0	70,273
Maturities of available-for-sale securities	0	128,820
Purchases of time deposits	0	(25,000)
Maturities of time deposits	0	75,000
Purchases of technology licenses	(1,484)	(360)
Purchases of property and equipment	(19,183)	(13,588)
Other	(342)	(4,989)
Net cash provided by (used in) investing activities	(21,009)	216,699
Cash flows from financing activities:
Repurchases of common stock	(48,022)	0
Proceeds from employee stock plans	31,084	11,055
Tax withholding paid on behalf of employees for net share settlement	(28,758)	(23,893)
Dividend payments to shareholders	(39,467)	(29,798)
Payments on technology license obligations	(15,268)	(20,461)
Principal payments of debt	(50,000)	0
Payment of equity and debt financing costs	0	(3,600)
Other	(4,893)	0
Net cash used in financing activities	(155,324)	(66,697)
Net increase (decrease) in cash and cash equivalents	(10,517)	278,776
Cash and cash equivalents at beginning of period	582,410	888,482
Cash and cash equivalents at end of period	$ 571,893	$ 1,167,258

Basis of Presentation	3 Months Ended
Basis of Presentation	May 04, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The unaudited condensed consolidated financial statements of Marvell Technology Group Ltd., a Bermuda exempted company, and its wholly owned subsidiaries (the “Company”), as of and for the three months ended May 4, 2019, have been prepared as required by the U.S. Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted as permitted by the SEC. These unaudited condensed consolidated financial statements and related notes should be read in conjunction with the Company's fiscal year 2019 audited financial statements included in the Company's Annual Report on Form 10-K for the fiscal year ended February 2, 2019. In the opinion of management, the financial statements include all adjustments, including normal recurring adjustments and other adjustments, that are considered necessary for fair presentation of the Company’s financial position and results of operations. All inter-company accounts and transactions have been eliminated. Operating results for the periods presented herein are not necessarily indicative of the results that may be expected for the entire year. Certain prior year amounts have been reclassified to conform to current year presentation. These amounts were not material to any of the periods presented. These financial statements should also be read in conjunction with the Company’s critical accounting policies included in the Company’s Annual Report on Form 10-K for the year ended February 2, 2019 and those included in this Form 10-Q below. The Company’s fiscal year is the 52- or 53-week period ending on the Saturday closest to January 31. Accordingly, every fifth or sixth fiscal year will have a 53-week period. The additional week in a 53-week year is added to the fourth quarter, making such quarter consist of 14 weeks. Fiscal 2019 had a 52-week year. Fiscal 2020 is a 52-week year.

Recent Accounting Pronouncements	3 Months Ended
Recent Accounting Pronouncements	May 04, 2019
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Accounting Pronouncements Recently Adopted In February 2016, the Financial Accounting Standards Board (“FASB”) issued a new standard on the accounting for leases, which amends the existing guidance to require lessees to recognize assets and liabilities on the balance sheet for the rights and obligation created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. The Company adopted the new lease accounting standard on February 3, 2019, using the modified retrospective approach by applying the new standard to leases existing at the date of initial application and not restating comparative periods. See “Note 3 - Leases” for additional information. Accounting Pronouncements Not Yet Effective In June 2016, the FASB issued a new standard requiring financial assets measured at amortized cost be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The standard eliminates the threshold for initial recognition in current GAAP and reflects an entity’s current estimate of all expected credit losses. The measurement of expected credit losses is based on historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the financial assets. The standard is effective for the Company beginning in the first quarter of fiscal year 2021. The Company does not expect the adoption of this guidance will have a material effect on its consolidated financial statements. In August 2018, the FASB issued an accounting standards update to align the requirements for capitalizing implementation costs incurred in a software hosting arrangement that is a service contract and costs to develop or obtain internal-use software. The guidance is effective for the Company beginning in the first quarter of fiscal year 2021, with early adoption permitted. The Company is evaluating the effect this new guidance will have on its consolidated financial statements. In August 2018, the FASB issued an accounting standards update that modifies the disclosure requirements on fair value measurements. The new guidance adds, modifies and removes certain fair value measurement disclosure requirements. The guidance is effective for the company beginning in the first quarter of fiscal year 2021, with early adoption permitted. The Company is evaluating the effect this new guidance will have on its consolidated financial statements. In November 2018, the FASB issued an accounting standards update that clarifies when transactions between participants in a collaborative arrangement are within the scope of the new revenue recognition standard that the Company adopted at the beginning of fiscal 2019. The guidance is effective for the Company beginning in the first quarter of fiscal year 2021, with early adoption permitted. The guidance must be applied retrospectively as of the date of initial application of the revenue recognition standard. In addition, entities may elect to apply the guidance to all collaborative arrangements or only to collaborative arrangements that are not completed as of the date of initial application of the aforementioned revenue recognition standard. The Company is evaluating the effect this new guidance will have on its consolidated financial statements.

Leases

3 Months Ended

May 04, 2019

Leases [Abstract]

Leases

Effective February 3, 2019, the Company adopted the new lease accounting standard using the modified retrospective approach. The Company elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows the Company to carry forward the historical lease classification. The Company elected to apply the short-term lease measurement and recognition exemption in which right-of use assets (“ROU”) and lease liabilities are not recognized for short-term leases. Adoption of this standard resulted in the recording of net operating lease ROU assets and corresponding operating lease liabilities of $125 million and $149 million, respectively. The net ROU asset includes the effect of reclassifying a portion of facilities-related restructuring reserves as an offset in accordance with the transition guidance. The standard did not materially affect the condensed consolidated statements of operations and had no impact on cash flows.

The Company determines if an arrangement is a lease at inception. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Operating lease ROU assets also include any initial direct costs and prepayments less lease incentives. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options. As the Company's leases generally do not provide an implicit rate, the Company uses its collateralized incremental borrowing rate based on the information available at the lease commencement date, including lease term, in determining the present value of lease payments. Lease expense for these leases is recognized on a straight line basis over the lease term.

The Company's leases include facility leases and data center leases, which are all classified as operating leases. For data center leases, the Company elected the practical expedient to account for the lease and non-lease component as a single lease component.

Lease expense and supplemental cash flow information are as follows (in thousands):



	Three Months Ended May 4, 2019
Operating lease expenses	$	10,668
Cash paid for amounts included in the measurement of operating lease liabilities	$	7,244
Right-of-use assets obtained in exchange for lease obligation	$	1,137

Supplemental balance sheet information related to leases are as follows (in thousands):



	Classification on the Condensed Consolidated Balance Sheet	May 4, 2019
Right-of-use assets	Other non-current assets	$	118,624

Current portion of lease liabilities	Accrued liabilities	27,959
Non-current portion of lease liabilities	Other non-current liabilities	118,688
Total lease liabilities		$	146,647

The aggregate future lease payments for operating leases as of May 4, 2019 are as follows (in thousands):



Fiscal Year	Operating Leases
Remainder of 2020	$	27,835
2021	32,637
2022	29,578
2023	22,716
2024	14,647
Thereafter	40,422
Total lease payments	167,835
Less: Interest	21,188
Present value of lease liabilities	$	146,647

The aggregate future lease payments for operating leases as of February 2, 2019 are as follows (in thousands):



Fiscal Year	Operating Leases
2020	$	43,286
2021	29,866
2022	26,612
2023	21,272
2024	13,690
Thereafter	40,100
Total	$	174,826

Average lease terms and discount rates were as follows:



	Three Months Ended May 4, 2019
Weighted-average remaining lease term (years)	5.90
Weighted-average discount rate	3.85	%

Business Combination

3 Months Ended

May 04, 2019

Business Combinations [Abstract]

Business Combination

On July 6, 2018, the Company completed the acquisition of Cavium (the “Cavium acquisition”). Cavium is a provider of highly integrated semiconductor processors that enable intelligent processing for wired and wireless infrastructure and cloud for networking, communications, storage and security applications. The Cavium acquisition was primarily intended to create an opportunity for the combined company to emerge as a leader in infrastructure solutions. The total consideration paid to acquire Cavium, which consisted of cash, common stock of the Company and share based compensation awards was approximately $6.2 billion. The merger consideration was funded with a combination of cash on hand, new debt financing and issuance of the Company’s common shares. See “Note 8 - Debt” for discussion of the debt financing.

The merger consideration allocation set forth herein is preliminary and may be revised as additional information becomes available during the measurement period which could be up to 12 months from the closing date of the acquisition. Any such revisions or changes may be material.

The purchase price allocation is as follows:



	Previously Reported February 2, 2019 (Provisional)
Cash and cash equivalents	$	180,989
Accounts receivable	112,270
Inventories	330,778
Prepaid expense and other current assets	19,890
Assets held for sale	483
Property and equipment	115,428
Acquired intangible assets	2,744,000
Other non-current assets	89,139
Goodwill	3,501,195
Accounts payable	(52,383		)
Accrued liabilities	(126,007		)
Accrued employee compensation	(34,813		)
Deferred income	(2,466		)
Current portion of long-term debt	(6,123		)
Liabilities held for sale	(3,032		)
Long-term debt	(600,005		)
Non-current income taxes payable	(8,454		)
Deferred tax liabilities	(82,994		)
Other non-current liabilities	(16,099		)
Total merger consideration	$	6,161,796

The provisional amounts presented in the table above pertained to the preliminary purchase price allocation reported in the Company’s Form 10-K for the year ended February 2, 2019. There have been no measurement period adjustments during the three months ended May 4, 2019.

The Company incurred total acquisition related costs of $53.7 million. The Company also incurred $22.8 million of debt financing costs. As of May 4, 2019, $0.4 million associated with the Revolving Credit Facility was classified in prepaid expenses and other current assets, $1.2 million associated with the Revolving Credit Facility was classified in other non-current assets, and $9.2 million associated with the term loan and senior notes was classified in long-term debt in the condensed consolidated balance sheet. See “Note 8. Debt” for additional information. Additionally, the Company incurred $2.9 million of equity issuance costs, which were recorded in additional paid-in capital in the condensed consolidated balance sheet.

Unaudited Supplemental Pro Forma Information

The unaudited supplemental pro forma financial information presented below is for illustrative purposes only and is not necessarily indicative of the financial position or results of operations that would have been realized if the acquisition had been completed on the date indicated, does not reflect synergies that might have been achieved, nor is it indicative of future operating results or financial position. The pro forma adjustments are based upon currently available information and certain assumptions the Company believe are reasonable under the circumstances.

The following unaudited supplemental pro forma information presents the combined results of operations for the period presented, as if Cavium had been acquired as of the beginning of fiscal year 2018. The unaudited supplemental pro forma information includes adjustments to amortization and depreciation for acquired intangible assets and property and equipment, adjustments to share-based compensation expense, the purchase accounting effect on inventories acquired, interest expense, and transaction costs. The unaudited supplemental pro forma information presented below is for informational purposes only and is not necessarily indicative of our consolidated results of operations of the combined business had the Cavium acquisition actually occurred at the beginning of fiscal year 2018 or of the results of our future operations of the combined business.

The unaudited supplemental pro forma financial information for the period presented is as follows (in thousands):



	Three months ended
	May 5, 2018
Pro forma net revenue	$	835,392
Pro forma net income	$	52,065

Supplemental Financial Information

3 Months Ended

May 04, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Supplemental Financial Information

Supplemental Financial Information (in thousands)

Consolidated Balance Sheets



	May 4, 2019		February 2, 2019
Inventories:
Work-in-process	$	171,695	$	162,384
Finished goods	89,286		113,621
Total inventories	$	260,981	$	276,005



	May 4, 2019			February 2, 2019
Property and equipment, net:
Machinery and equipment	$	617,281		$	615,329
Land, buildings, and leasehold improvements	313,698			287,047
Computer software	105,059			105,539
Furniture and fixtures	25,398			23,924
	1,061,436			1,031,839
Less: Accumulated depreciation and amortization	(734,837		)	(712,861		)
Total property and equipment, net	$	326,599		$	318,978

Current accrued liabilities are comprised of the following at May 4, 2019 and February 2, 2019, respectively:



	May 4, 2019		February 2, 2019
Accrued liabilities:
Contract liabilities	$	131,936	$	142,378
Technology license obligations	50,876		48,018
Accrued income tax payable	36,894		47,079
Other	113,974		98,034
Total accrued liabilities	$	333,680	$	335,509

Accumulated Other Comprehensive Income (Loss)

As of May 4, 2019, there are no changes in accumulated other comprehensive income (loss) by components. The changes in accumulated other comprehensive income (loss) by components for the comparative period are presented in the following table:



	Unrealized Gain (Loss) on Marketable Securities (1)
Balance at February 3, 2018	$	(2,322	)
Other comprehensive income (loss) before reclassifications	(733		)
Amounts reclassified from accumulated other comprehensive income (loss)	651
Net current-period other comprehensive income (loss), net of tax	(82		)
Balance at May 5, 2018	$	(2,404	)

(1) The amounts of gains (losses) associated with the Company's marketable securities reclassified from accumulated other comprehensive income (loss) are recorded in interest and other income, net.

Share Repurchase Program

On November 17, 2016, the Company announced that its Board of Directors authorized a $1.0 billion share repurchase plan. The newly authorized stock repurchase program replaced in its entirety the prior $3.25 billion stock repurchase program. On October 16, 2018, the Company announced that its Board of Directors authorized a $700 million addition to the balance of its existing share repurchase plan. As of May 4, 2019, there was $904 million remaining available for future share repurchases. The Company intends to effect share repurchases in accordance with the conditions of Rule 10b-18 under the Exchange Act, but may also make repurchases in the open market outside of Rule 10b-18 or in privately negotiated transactions. The share repurchase program will be subject to market conditions and other factors, and does not obligate the Company to repurchase any dollar amount or number of its common shares and the repurchase program may be extended, modified, suspended or discontinued at any time.

The Company repurchased 2.4 million of its common shares for $50.0 million during the three months ended May 4, 2019. 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 their trade date. The Company did not repurchase any common shares during the three months ended May 5, 2018.

As of May 4, 2019, a total of 294.8 million shares have been repurchased to date under the Company’s share repurchase programs for a total $3.9 billion in cash and there was $904 million remaining available for future share repurchases.

Fair Value Measurements

3 Months Ended

May 04, 2019

Fair Value Disclosures [Abstract]

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—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 which are valued primarily using quoted market prices. The Company’s Level 2 assets include time deposits, as the market inputs used to value these instruments consist of market yields. In addition, the severance pay fund is classified as Level 2 assets as the valuation inputs are based on quoted prices and market observable data of similar instruments.

The tables below set forth, by level, the Company’s assets and liabilities that are measured at fair value on a 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):



	Fair Value Measurements at May 4, 2019
	Level 1		Level 2		Level 3		Total
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	6,749	$	—	$	—	$	6,749
Time deposits	—		29,000		—		29,000
Other non-current assets:
Severance pay fund	—		625		—		625
Total assets	$	6,749	$	29,625	$	—	$	36,374



	Fair Value Measurements at February 2, 2019
	Level 1		Level 2		Level 3		Total
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	16,829	$	—	$	—	$	16,829
Time deposits	—		73,935		—		73,935
Other non-current assets:
Severance pay fund	—		727		—		727
Total assets	$	16,829	$	74,662	$	—	$	91,491

Fair Value of Debt

The Company classified the Term Loan, the 2023 Notes and 2028 Notes under Level 2 of the fair value measurement hierarchy. The carrying value of the Term Loan approximates its fair value as the Term Loan is carried at a market observable interest rate that resets periodically. The estimated aggregate fair value of the 2023 Notes and 2028 Notes was $1 billion at May 4, 2019 and February 2, 2019, and were classified as Level 2 as there are quoted prices from less active markets for the notes.

- 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

3 Months Ended

May 04, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Acquired Intangible Assets, Net

Goodwill

Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. The carrying value of goodwill as of May 4, 2019 and February 2, 2019 is $5.5 billion. See “Note 4 - Business Combination” for further discussion of the acquisition.

Acquired Intangible Assets, Net

In connection with the Cavium acquisition on July 6, 2018, the Company acquired $2.7 billion of intangible assets. As of May 4, 2019 and February 2, 2019, net carrying amounts are as follows (in thousands, except for weighted average remaining amortization period):



	May 4, 2019
	Gross Carrying Amounts		Accumulated Amortization			Net Carrying Amounts		Weighted average remaining amortization period (years)
Developed technologies	$	1,868,000	$	(194,073	)	$	1,673,927	7.00
Customer contracts and related relationships	465,000		(64,395		)	400,605		8.17
Trade names	23,000		(4,590		)	18,410		3.62
Total acquired amortizable intangible assets	$	2,356,000	$	(263,058	)	$	2,092,942	7.19
IPR&D	388,000		—			388,000		n/a
Total acquired intangible assets	$	2,744,000	$	(263,058	)	$	2,480,942



	February 2, 2019
	Gross Carrying Amounts		Accumulated Amortization			Net Carrying Amounts		Weighted average remaining amortization period (years)
Developed technologies	$	1,743,000	$	(134,167	)	$	1,608,833	7.10
Customer contracts and related relationships	465,000		(45,939		)	419,061		8.42
Trade names	23,000		(3,212		)	19,788		3.85
Total acquired amortizable intangible assets	$	2,231,000	$	(183,318	)	$	2,047,682	7.34
IPR&D	513,000		—			513,000		n/a
Total acquired intangible assets	$	2,744,000	$	(183,318	)	$	2,560,682

The intangible assets are amortized on a straight-line basis over the estimated useful lives, except for customer contracts and related relationships, which are amortized using an accelerated method of amortization over the expected customer lives, which more accurately reflects the pattern of realization of economic benefits expected to be obtained. The IPR&D will be accounted for as an indefinite-lived intangible asset and will not be amortized until the underlying projects reach technological feasibility and commercial production at which point the IPR&D will be amortized over the estimated useful life. Useful lives for these IPR&D projects are expected to range between 4 to 9 years. In the event the IPR&D is abandoned the related assets will be written off.

Amortization expense for acquired intangible assets for the three months ended May 4, 2019 was $79.7 million. The following table presents the estimated future amortization expense of acquired amortizable intangible assets as of May 4, 2019 (in thousands):



Fiscal Year	Amount
Remainder of 2020	$	242,692
2021	315,469
2022	306,913
2023	299,485
2024	280,871
Thereafter	647,512
	$	2,092,942

Debt

3 Months Ended

May 04, 2019

Debt Disclosure [Abstract]

Debt

In connection with the acquisition of Cavium (see “Note 4 - Business Combination”), the Company executed debt agreements in June 2018 to obtain a $900 million term loan, a $500 million revolving credit facility and $1.0 billion of senior unsecured notes. Upon completion of the offering of the senior unsecured notes in June 2018, the Company terminated an $850 million bridge loan commitment. This bridge loan commitment was provided by the underwriting bankers at the time the Merger Agreement was executed in November 2017. The bridge loan was never drawn upon.

Term Loan and Revolving Credit Facility

On June 13, 2018, the Company entered into a credit agreement (“Credit Agreement”) with certain lenders and Goldman Sachs Bank USA, as the general administrative agent and the term facility agent, and Bank of America, N.A., as the revolving facility agent. The Credit Agreement provides for borrowings of: (i) up to $500.0 million in the form of a revolving line of credit (“Revolving Credit Facility”) and (ii) $900.0 million in the form of a term loan (“Term Loan”). The proceeds of the Term Loan were used to fund a portion of the cash consideration for the Cavium acquisition, repay Cavium’s debt, and pay transaction expenses in connection with the Cavium acquisition. The proceeds of the Revolving Credit Facility is intended for general corporate purposes of the Company and its subsidiaries, which may include, among other things, the financing of acquisitions, the refinancing of other indebtedness and the payment of transaction expenses related to the foregoing. As of May 4, 2019, the Revolving Credit Facility has not been drawn upon. Following is further detail of the terms of the various debt agreements.

The Term Loan has a three year term which matures on July 6, 2021 and has a stated floating interest rate which equates to reserve-adjusted LIBOR + 137.5 bps. The effective interest rate for the Term Loan was 4.334% as of May 4, 2019. The Term Loan does not require any scheduled principal payments prior to final maturity but does permit the Company to make early principal payments without premium or penalty. During the three months ended May 4, 2019, the Company repaid $50 million of the principal outstanding, and wrote off $0.5 million of associated unamortized debt issuance costs. The Revolving Credit Facility has a five year term and has a stated floating interest rate which equates to reserve-adjusted LIBOR + 150.0 bps. As of May 4, 2019, the full amount of the Revolving Credit Facility of $500 million was undrawn and will be available for draw down through June 13, 2023. An unused commitment fee is payable quarterly based on unused balances at a rate that is based on the ratings of the Company's senior unsecured long-term indebtedness. This rate was 0.175% at May 4, 2019.

The Credit Agreement requires that the Company and its subsidiaries comply, subject to certain exceptions, with covenants relating to customary matters such as creating or permitting certain liens, entering into sale and leaseback transactions, consolidating, merging, liquidating or dissolving, and entering into restrictive agreements. It also prohibits subsidiaries of the Company from incurring additional indebtedness, and requires the Company to comply with a leverage ratio financial covenant not to exceed 3 to 1 as of the end of any fiscal quarter. As of May 4, 2019, the Company was in compliance with all of its debt covenants.

Senior Unsecured Notes

On June 22, 2018, the Company completed a public offering of (i) $500.0 million aggregate principal amount of the Company's 4.200% Senior Notes due 2023 (the “2023 Notes”) and (ii) $500.0 million aggregate principal amount of the Company's 4.875% Senior Notes due 2028 (the “2028 Notes” and, together with the 2023 Notes, the “Senior Notes”).

The 2023 Notes mature on June 22, 2023 and the 2028 Notes mature on June 22, 2028. The stated and effective interest rates for the 2023 Notes are 4.200% and 4.423%, respectively. The stated and effective interest rates for the 2028 Notes are 4.875% and 5.012%, respectively. The Company may redeem the Senior Notes, in whole or in part, at any time prior to their maturity at the redemption prices set forth in Senior Notes. In addition, upon the occurrence of a change of control repurchase event (which involves the occurrence of both a change of control and a ratings event involving the Senior Notes being rated below investment grade), the Company will be required to make an offer to repurchase the Senior Notes at a price equal to 101% of the principal amount of the notes, plus accrued and unpaid interest to, but excluding, the repurchase date. The indenture governing the Senior Notes also contains certain limited covenants restricting the Company’s ability to incur certain liens, enter into certain sale and leaseback transactions and merge or consolidate with any other entity or convey, transfer or lease all or substantially all of the Company’s properties or assets to another person, which, in each case, are subject to certain qualifications and exceptions.

Summary of Borrowings and Outstanding Debt

The following table summarizes the Company's outstanding debt at May 4, 2019 and February 2, 2019 (in thousands):



	May 4, 2019			February 2, 2019
Face Value Outstanding:
Term Loan	$	700,000		$	750,000
2023 Notes	500,000			500,000
2028 Notes	500,000			500,000
Total borrowings	$	1,700,000		$	1,750,000
Less: Unamortized debt discount and issuance cost	(15,719		)	(17,301		)
Net carrying amount of debt	$	1,684,281		$	1,732,699
Less: Current portion	—			—
Non-current portion	$	1,684,281		$	1,732,699

During the three months ended May 4, 2019, the Company recognized $19.3 million of interest expense in its condensed consolidated statements of operations related to interest, amortization of debt issuance costs and accretion of discount associated with the outstanding Term Loan and Senior Notes, respectively.

As of May 4, 2019, the aggregate future contractual maturities of the Company's outstanding debt, at face value, were as follows (in thousands):



Fiscal year	Amount
Remainder of 2020	$	—
2021	—
2022	700,000
2023	—
2024	500,000
Thereafter	500,000
Total	$	1,700,000

Restructuring and Other Related Charges

3 Months Ended

May 04, 2019

Restructuring and Related Activities [Abstract]

Restructuring and Other Related Charges

The following table presents details related to the restructuring related charges as presented in the condensed Consolidated Statements of Operations (in thousands):



	Three Months Ended
	May 4, 2019			May 5, 2018
Severance and related costs	$	1,488		$	1,451
Facilities and related costs	478			28
Other exit-related costs	191			88
	2,157			1,567
Release of reserves:
Facilities and related costs	(188		)	—
Other exit-related costs	(127		)	—

Other restructuring charges
Impairment of equipment and other	633			—
Right-of-use asset amortization and impairment	3,207			—
	$	5,682		$	1,567

The Company continuously evaluates its existing operations to increase operational efficiency, decrease costs and increase profitability. The Company recorded restructuring and other related charges of $5.7 million for the three months ended May 4, 2019. These restructuring costs consist of approximately $3.2 million in right-of-use asset amortization and impairment related to certain restructured leases, $1.5 million in severance and related costs, $0.6 million in asset write off costs, $0.3 million in facilities and related costs, and $0.1 million in other exit-related costs. The Company expects to complete these restructuring actions by the end of fiscal 2020.

The Company recorded restructuring and other related charges of $1.6 million for the three months ended May 5, 2018. These restructuring costs consist of approximately $1.5 million in severance and related costs, and $0.1 million in other exit-related costs.

The following table sets forth a reconciliation of the beginning and ending restructuring liability balances by each major type of cost associated with the restructuring charges (in thousands):



	Severance and related costs			Facilities and related costs			Other exit-related costs			Total
Balance at February 2, 2019	$	12,403		$	26,904		$	1,049		$	40,356
Restructuring charges	1,488			478			191			2,157
Net cash payments	(9,009		)	(579		)	(887		)	(10,475		)
Release of reserves	—			(188		)	(127		)	(315		)
Effect of adoption of ASC 842	—			(25,893		)	—			(25,893		)
Balance at May 4, 2019	4,882			722			226			5,830
Less: non-current portion	—			658			—			658
Current portion	$	4,882		$	64		$	226		$	5,172

Upon adoption of the new lease accounting standard (see Note 3 - “Leases”), certain restructuring liabilities were required to be recognized as a reduction of the ROU asset.

The remaining accrued severance and related costs and the other exit-related costs are expected to be paid in fiscal 2020.

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	May 04, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Purchase Commitments Under the Company’s manufacturing relationships with its foundry partners, cancellation of outstanding purchase orders is allowed but requires payment of all costs and expenses incurred through the date of cancellation. As of May 4, 2019, these foundries had incurred approximately $152.4 million of manufacturing costs and expenses relating to the Company’s outstanding purchase orders. Contingencies and Legal Proceedings The Company may from time to time be a party to claims, lawsuits, governmental inquiries, inspections or investigations and other legal proceedings (collectively, “Legal Matters”) arising in the course of its business. Such Legal Matters, even if not meritorious, could result in the expenditure of significant financial and managerial resources. In 2015 the Securities and Exchange Commission (the “SEC”) and Department of Justice commenced an investigation regarding disclosures relating to certain revenue recognized in the first and second quarters of fiscal 2016 and the fourth quarter of fiscal 2015, including transactions that would have, in the normal course of events and but for action by certain Marvell employees, been completed and recognized in a subsequent quarter (referred to internally as “pull-ins”). The Company has been fully cooperating with the investigation. The Company is currently unable to predict the final outcome of its Legal Matters and therefore cannot determine the likelihood of loss or estimate a range of possible loss, except with respect to amounts where it has determined a loss is both probable and estimable and has made an accrual. The Company evaluates, at least on a quarterly basis, developments in its Legal Matters that could affect the amount of any accrual, as well as any developments that would result in a loss contingency to become both probable and reasonably estimable. The ultimate outcome of any Legal Matter involves judgments, estimates and inherent uncertainties. An unfavorable outcome in a Legal Matter, particularly in a patent dispute, could require the Company to pay damages or could prevent the Company from selling some of its products in certain jurisdictions. While the Company cannot predict with certainty the results of the Legal Matters in which it is currently involved, the Company does not expect that the ultimate costs to resolve these Legal Matters will individually or in the aggregate have a material adverse effect on its financial condition, however, there can be no assurance that the current or any future Legal Matters will be resolved in a manner that is not adverse to the Company’s business, financial condition, results of operations or cash flows. 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 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 condensed 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. Intellectual Property Indemnification In addition to the above indemnities, 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 as well as the attorneys’ fees and costs under an infringement claim. The Company’s indemnification obligations generally do not expire after termination or expiration of the agreement containing the indemnification obligation. Generally, there are limits on and exceptions to the Company’s potential liability for indemnification. Although historically the Company has not made significant payments under these indemnification obligations, the Company cannot estimate the amount of potential future payments, if any, that it might be required to make as a result of these agreements. The maximum potential amount of any future payments that the Company could be required to make under these indemnification obligations could be significant.

Revenue

3 Months Ended

May 04, 2019

Revenue from Contract with Customer [Abstract]

Revenue

The majority of the Company's revenue is generated from sales of the Company’s products. The following table summarizes net revenue disaggregated by product group (in thousands, except percentages):



	Three Months Ended				Three Months Ended
	May 4, 2019		% of Total		May 5, 2018		% of Total
Net revenue by product group:
Storage (1)	$	278,667	42	%	$	317,069	52	%
Networking (2)	341,344		52	%	244,228		41	%
Other (3)	42,441		6	%	43,334		7	%
	$	662,452			$	604,631


1)	Storage products are comprised primarily of HDD, SSD Controllers, Fibre Channel Adapters and Data Center Storage Solutions.


2)	Networking products are comprised primarily of Ethernet Switches, Ethernet Transceivers, Ethernet NICs, Embedded Communications and Infrastructure Processors, Automotive Ethernet, Security Adapters and Processors as well as Connectivity products. In addition, this grouping includes a few legacy product lines in which the Company no longer invests, but will generate revenue for several years.


3)	Other products are comprised of primarily Printer Solutions, Application Processors and others.

The following table summarizes net revenue disaggregated by primary geographical market (in thousands, except percentages):



	Three Months Ended				Three Months Ended
	May 4, 2019		% of Total		May 5, 2018		% of Total
Net revenue based on destination of shipment:
China	$	246,134	37	%	$	276,622	46	%
United States	73,005		11	%	16,030		3	%
Malaysia	63,320		10	%	90,623		15	%
Philippines	62,488		9	%	57,767		9	%
Thailand	46,666		7	%	41,534		7	%
Other	170,839		26	%	122,055		20	%
	$	662,452			$	604,631

The following table summarizes net revenue disaggregated by customer type (in thousands, except percentages):



	Three Months Ended				Three Months Ended
	May 4, 2019		% of Total		May 5, 2018		% of Total
Net revenue by customer type:
Direct customers	$	514,558	78	%	$	470,476	78	%
Distributors	147,894		22	%	134,155		22	%
	$	662,452			$	604,631

Contract Liabilities

Contract liabilities consist of the Company’s obligation to transfer goods or services to a customer for which the Company has received consideration or the amount is due from the customer. As of May 4, 2019, contract liability balances are comprised of variable consideration estimated based on a portfolio basis using the expected value methodology based on analysis of historical data, current economic conditions, and contractual terms. Variable consideration estimates consist of the estimated returns, price discounts, price protection, rebates, and stock rotation programs. As of the end of a reporting period, some of the performance obligations associated with contracts will have been unsatisfied or only partially satisfied. In accordance with the practical expedients available in the guidance, the Company does not disclose the value of unsatisfied performance obligations for contracts with an original expected duration of one year or less. Contract liabilities are included in accrued liabilities in the condensed consolidated balance sheets.

The opening balance of contract liabilities at the beginning of the first quarter of fiscal year 2020 was $142.4 million. During the three months ended May 4, 2019, contract liabilities increased by $129.5 million associated with variable consideration estimates, offset by $138.9 million decrease in such reserves primarily due to credit memos issued to customers. The ending balance of contract liabilities as of the first quarter of fiscal year 2020 was $133.0 million. The amount of revenue recognized during the three months ended May 4, 2019 that was included in the contract liabilities balance at February 2, 2019 was not material.

Sales Commissions

The Company has elected to apply the practical expedient to expense commissions when incurred as the amortization period is typically one year or less. These costs are recorded in selling, general and administrative expenses in the condensed consolidated statements of operations.

Income Tax	3 Months Ended
Income Tax	May 04, 2019
Income Tax Disclosure [Abstract]
Income Tax	Income Tax The Company’s tax provision for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items, if any, that arise during the period. Each quarter, the Company updates its estimate of the annual effective tax rate, and if the estimated annual effective tax rate changes, the Company makes a cumulative adjustment in such period. The Company’s quarterly tax provision, and estimate of its annual effective tax rate, is subject to variation due to several factors, including variability in accurately predicting our pre-tax income or loss and the mix of jurisdictions to which they relate, intercompany transactions, the applicability of special tax regimes, changes in how we do business, and acquisitions, as well as the integration of such acquisitions. The Company’s estimated effective tax rate for the year differs from the U.S. statutory rate of 21% primarily due to the benefit of a substantial portion of its earnings being taxed at rates lower than the U.S. statutory rate. The Company estimates that its effective tax rate could be adversely affected by pre-tax losses incurred in certain non-U.S. jurisdictions subject to tax rates lower than 21% for which it does not realize a tax benefit. These losses reduce the Company's pre-tax income without a corresponding reduction in its tax expense, and therefore increase its effective tax rate. The income tax expense of $7.3 million for the three months ended May 4, 2019 included a tax benefit from a net reduction in unrecognized tax benefits of $3.2 million, offset by $9.9 million in tax due on amounts that were previously considered indefinitely reinvested. 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 the 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 $15.3 million from the lapse of statutes of limitation in various jurisdictions during the next 12 months. Government tax authorities from several non-U.S. jurisdictions are also examining the Company’s tax returns. The Company believes that it has adequately provided for any reasonably foreseeable outcomes related to its tax audits and that any settlement will not have a material effect on its results at this time. The Company operates under tax incentives in certain countries that may be extended if certain additional requirements are satisfied. The tax incentives are conditional upon meeting certain employment and investment thresholds. The impact of these tax incentives decreased foreign taxes by $0.1 million for the three months ended May 4, 2019, and $0.7 million for the three months ended May 5, 2018, respectively. The benefit of the tax incentives on net income per share was less than $0.01 per share for both the three months ended May 4, 2019 and May 5, 2018. The Company’s principal source of liquidity as of May 4, 2019 consisted of approximately $572 million of cash, cash equivalents and short-term investments, of which approximately $543 million was held by subsidiaries outside of Bermuda. The Company has not recognized a deferred tax liability on $138 million of these assets as those amounts are deemed to be indefinitely reinvested. The Company plans to use such amounts to fund various activities outside of Bermuda, including working capital requirements, capital expenditures for expansion, funding of future acquisitions or other financing activities.

Net Income Per Share

3 Months Ended

May 04, 2019

Earnings Per Share [Abstract]

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 during the period, and diluted net income per share, which is based on the weighted average number of common shares outstanding and potentially dilutive shares outstanding during the period.

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
	May 4, 2019			May 5, 2018
Numerator:
Net income (loss)	$	(48,450	)	$	128,612
Denominator:
Weighted average shares — basic	658,963			497,335
Effect of dilutive securities:
Share-based awards	—			11,381
Weighted average shares — diluted	658,963			508,716
Net income per share:
Basic	$	(0.07	)	$	0.26
Diluted	$	(0.07	)	$	0.25

Potential dilutive securities include dilutive common shares from share-based awards attributable to the assumed exercise of stock options, restricted stock units and employee stock purchase plan shares using the treasury stock method. Under the treasury stock method, potential common shares outstanding are not included in the computation of diluted net income per share if their effect is anti-dilutive.

Anti-dilutive potential shares are presented in the following table (in thousands):



	Three Months Ended
	May 4, 2019	May 5, 2018
Weighted average shares outstanding:
Share-based awards	13,969	5,237

Anti-dilutive potential shares from share-based awards are excluded from the calculation of diluted earnings per share for all periods reported above because either their exercise price exceeded the average market price during the period or the share-based awards were determined to be anti-dilutive based on applying the treasury stock method. Anti-dilutive potential shares are also excluded from the calculation of diluted earnings per share for the three months ended May 4, 2019 due to the net loss reported in that period.

Subsequent Events (Notes)	3 Months Ended
Subsequent Events (Notes)	May 04, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Subsequent to quarter end, on May 6, 2019, the Company announced its intent to acquire Aquantia, Corp. (“Aquantia”), a publicly traded company. It is a manufacturer of high speed transceivers which includes copper and optical physical layer products. The Company will pay Aquantia's stockholders $13.25 per share in cash. This represents approximately $452 million in transaction value after adjusting for net cash on Aquantia's balance sheet. The transaction is expected to close by December 2019, subject to regulatory approval as well as other customary closing conditions, including the approval by Aquantia's stockholders of the merger agreement. Subsequent to quarter end, on May 20, 2019, the Company announced its intent to acquire Avera Semiconductor (“Avera”), the application specific integrated circuit (“ASIC”) business of GlobalFoundries Inc. (“GlobalFoundries”). The Company will pay GlobalFoundries $650 million in cash at closing plus an additional $90 million in cash if certain business conditions are satisfied within the next 15 months. The transaction is expected to close by January 2020 pending receipt of regulatory approvals and other customary closing conditions. Subsequent to quarter end, on May 29, 2019, the Company announced its intent to sell its wi-fi connectivity business to NXP for $1.76 billion in cash. The divestiture encompasses the Company's wi-fi and bluetooth technology portfolios and related assets. The business employs approximately 550 people worldwide and generated approximately $300 million in revenue in the Company's fiscal 2019. This transaction has been approved by the boards of directors of NXP and the Company and is expected to close by March 2020, subject to customary closing conditions and regulatory approvals. Subsequent to quarter end, in June 2019, the Company executed a funded research and development agreement with a business partner. In conjunction with the agreement, the Company issued a warrant to purchase 9 million of the Company's common shares, subject to certain vesting and exercise conditions.

Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	May 04, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Fiscal Period	The Company’s fiscal year is the 52- or 53-week period ending on the Saturday closest to January 31. Accordingly, every fifth or sixth fiscal year will have a 53-week period. The additional week in a 53-week year is added to the fourth quarter, making such quarter consist of 14 weeks. Fiscal 2019 had a 52-week year. Fiscal 2020 is a 52-week year.
Recent Accounting Pronouncements	Accounting Pronouncements Recently Adopted In February 2016, the Financial Accounting Standards Board (“FASB”) issued a new standard on the accounting for leases, which amends the existing guidance to require lessees to recognize assets and liabilities on the balance sheet for the rights and obligation created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. The Company adopted the new lease accounting standard on February 3, 2019, using the modified retrospective approach by applying the new standard to leases existing at the date of initial application and not restating comparative periods. See “Note 3 - Leases” for additional information. Accounting Pronouncements Not Yet Effective In June 2016, the FASB issued a new standard requiring financial assets measured at amortized cost be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The standard eliminates the threshold for initial recognition in current GAAP and reflects an entity’s current estimate of all expected credit losses. The measurement of expected credit losses is based on historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the financial assets. The standard is effective for the Company beginning in the first quarter of fiscal year 2021. The Company does not expect the adoption of this guidance will have a material effect on its consolidated financial statements. In August 2018, the FASB issued an accounting standards update to align the requirements for capitalizing implementation costs incurred in a software hosting arrangement that is a service contract and costs to develop or obtain internal-use software. The guidance is effective for the Company beginning in the first quarter of fiscal year 2021, with early adoption permitted. The Company is evaluating the effect this new guidance will have on its consolidated financial statements. In August 2018, the FASB issued an accounting standards update that modifies the disclosure requirements on fair value measurements. The new guidance adds, modifies and removes certain fair value measurement disclosure requirements. The guidance is effective for the company beginning in the first quarter of fiscal year 2021, with early adoption permitted. The Company is evaluating the effect this new guidance will have on its consolidated financial statements. In November 2018, the FASB issued an accounting standards update that clarifies when transactions between participants in a collaborative arrangement are within the scope of the new revenue recognition standard that the Company adopted at the beginning of fiscal 2019. The guidance is effective for the Company beginning in the first quarter of fiscal year 2021, with early adoption permitted. The guidance must be applied retrospectively as of the date of initial application of the revenue recognition standard. In addition, entities may elect to apply the guidance to all collaborative arrangements or only to collaborative arrangements that are not completed as of the date of initial application of the aforementioned revenue recognition standard. The Company is evaluating the effect this new guidance will have on its consolidated financial statements.

Leases (Tables)

3 Months Ended

May 04, 2019

Leases [Abstract]

Schedule of Lease Expense and Supplemental Cash Flow Information

Lease expense and supplemental cash flow information are as follows (in thousands):



	Three Months Ended May 4, 2019
Operating lease expenses	$	10,668
Cash paid for amounts included in the measurement of operating lease liabilities	$	7,244
Right-of-use assets obtained in exchange for lease obligation	$	1,137

Supplemental Balance Sheet Information

Supplemental balance sheet information related to leases are as follows (in thousands):



	Classification on the Condensed Consolidated Balance Sheet	May 4, 2019
Right-of-use assets	Other non-current assets	$	118,624

Current portion of lease liabilities	Accrued liabilities	27,959
Non-current portion of lease liabilities	Other non-current liabilities	118,688
Total lease liabilities		$	146,647

Maturities of Operating Lease Liabilities

The aggregate future lease payments for operating leases as of May 4, 2019 are as follows (in thousands):



Fiscal Year	Operating Leases
Remainder of 2020	$	27,835
2021	32,637
2022	29,578
2023	22,716
2024	14,647
Thereafter	40,422
Total lease payments	167,835
Less: Interest	21,188
Present value of lease liabilities	$	146,647

Future Minimum Lease Payments, Net of Estimated Sublease Income Under Previous Accounting Standard

The aggregate future lease payments for operating leases as of February 2, 2019 are as follows (in thousands):



Fiscal Year	Operating Leases
2020	$	43,286
2021	29,866
2022	26,612
2023	21,272
2024	13,690
Thereafter	40,100
Total	$	174,826

Schedule of Average Lease Terms And Discount Rates

Average lease terms and discount rates were as follows:



	Three Months Ended May 4, 2019
Weighted-average remaining lease term (years)	5.90
Weighted-average discount rate	3.85	%

Business Combination (Tables)

3 Months Ended

May 04, 2019

Business Combinations [Abstract]

Purchase Price Allocation

The purchase price allocation is as follows:



	Previously Reported February 2, 2019 (Provisional)
Cash and cash equivalents	$	180,989
Accounts receivable	112,270
Inventories	330,778
Prepaid expense and other current assets	19,890
Assets held for sale	483
Property and equipment	115,428
Acquired intangible assets	2,744,000
Other non-current assets	89,139
Goodwill	3,501,195
Accounts payable	(52,383		)
Accrued liabilities	(126,007		)
Accrued employee compensation	(34,813		)
Deferred income	(2,466		)
Current portion of long-term debt	(6,123		)
Liabilities held for sale	(3,032		)
Long-term debt	(600,005		)
Non-current income taxes payable	(8,454		)
Deferred tax liabilities	(82,994		)
Other non-current liabilities	(16,099		)
Total merger consideration	$	6,161,796

Supplemental Pro Forma Financial Information

The unaudited supplemental pro forma financial information for the period presented is as follows (in thousands):



	Three months ended
	May 5, 2018
Pro forma net revenue	$	835,392
Pro forma net income	$	52,065

Supplemental Financial Information (Tables)

3 Months Ended

May 04, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Inventories



	May 4, 2019		February 2, 2019
Inventories:
Work-in-process	$	171,695	$	162,384
Finished goods	89,286		113,621
Total inventories	$	260,981	$	276,005

Schedule of Property and Equipment, Net



	May 4, 2019			February 2, 2019
Property and equipment, net:
Machinery and equipment	$	617,281		$	615,329
Land, buildings, and leasehold improvements	313,698			287,047
Computer software	105,059			105,539
Furniture and fixtures	25,398			23,924
	1,061,436			1,031,839
Less: Accumulated depreciation and amortization	(734,837		)	(712,861		)
Total property and equipment, net	$	326,599		$	318,978

Schedule of Current Accrued Liabilities

Current accrued liabilities are comprised of the following at May 4, 2019 and February 2, 2019, respectively:



	May 4, 2019		February 2, 2019
Accrued liabilities:
Contract liabilities	$	131,936	$	142,378
Technology license obligations	50,876		48,018
Accrued income tax payable	36,894		47,079
Other	113,974		98,034
Total accrued liabilities	$	333,680	$	335,509

Changes in Accumulated Other Comprehensive Income (Loss) by Components

The changes in accumulated other comprehensive income (loss) by components for the comparative period are presented in the following table:



	Unrealized Gain (Loss) on Marketable Securities (1)
Balance at February 3, 2018	$	(2,322	)
Other comprehensive income (loss) before reclassifications	(733		)
Amounts reclassified from accumulated other comprehensive income (loss)	651
Net current-period other comprehensive income (loss), net of tax	(82		)
Balance at May 5, 2018	$	(2,404	)

(1) The amounts of gains (losses) associated with the Company's marketable securities reclassified from accumulated other comprehensive income (loss) are recorded in interest and other income, net.

Fair Value Measurements (Tables)

3 Months Ended

May 04, 2019

Fair Value Disclosures [Abstract]

Fair Value, Assets and Liabilities Measured on Recurring Basis



	Fair Value Measurements at May 4, 2019
	Level 1		Level 2		Level 3		Total
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	6,749	$	—	$	—	$	6,749
Time deposits	—		29,000		—		29,000
Other non-current assets:
Severance pay fund	—		625		—		625
Total assets	$	6,749	$	29,625	$	—	$	36,374



	Fair Value Measurements at February 2, 2019
	Level 1		Level 2		Level 3		Total
Items measured at fair value on a recurring basis:
Assets
Cash equivalents:
Money market funds	$	16,829	$	—	$	—	$	16,829
Time deposits	—		73,935		—		73,935
Other non-current assets:
Severance pay fund	—		727		—		727
Total assets	$	16,829	$	74,662	$	—	$	91,491

Goodwill and Acquired Intangible Assets, Net (Tables)

3 Months Ended

May 04, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets by Major Class

As of May 4, 2019 and February 2, 2019, net carrying amounts are as follows (in thousands, except for weighted average remaining amortization period):



	May 4, 2019
	Gross Carrying Amounts		Accumulated Amortization			Net Carrying Amounts		Weighted average remaining amortization period (years)
Developed technologies	$	1,868,000	$	(194,073	)	$	1,673,927	7.00
Customer contracts and related relationships	465,000		(64,395		)	400,605		8.17
Trade names	23,000		(4,590		)	18,410		3.62
Total acquired amortizable intangible assets	$	2,356,000	$	(263,058	)	$	2,092,942	7.19
IPR&D	388,000		—			388,000		n/a
Total acquired intangible assets	$	2,744,000	$	(263,058	)	$	2,480,942



	February 2, 2019
	Gross Carrying Amounts		Accumulated Amortization			Net Carrying Amounts		Weighted average remaining amortization period (years)
Developed technologies	$	1,743,000	$	(134,167	)	$	1,608,833	7.10
Customer contracts and related relationships	465,000		(45,939		)	419,061		8.42
Trade names	23,000		(3,212		)	19,788		3.85
Total acquired amortizable intangible assets	$	2,231,000	$	(183,318	)	$	2,047,682	7.34
IPR&D	513,000		—			513,000		n/a
Total acquired intangible assets	$	2,744,000	$	(183,318	)	$	2,560,682

Schedule of Indefinite-Lived Intangible Assets

As of May 4, 2019 and February 2, 2019, net carrying amounts are as follows (in thousands, except for weighted average remaining amortization period):



	May 4, 2019
	Gross Carrying Amounts		Accumulated Amortization			Net Carrying Amounts		Weighted average remaining amortization period (years)
Developed technologies	$	1,868,000	$	(194,073	)	$	1,673,927	7.00
Customer contracts and related relationships	465,000		(64,395		)	400,605		8.17
Trade names	23,000		(4,590		)	18,410		3.62
Total acquired amortizable intangible assets	$	2,356,000	$	(263,058	)	$	2,092,942	7.19
IPR&D	388,000		—			388,000		n/a
Total acquired intangible assets	$	2,744,000	$	(263,058	)	$	2,480,942



	February 2, 2019
	Gross Carrying Amounts		Accumulated Amortization			Net Carrying Amounts		Weighted average remaining amortization period (years)
Developed technologies	$	1,743,000	$	(134,167	)	$	1,608,833	7.10
Customer contracts and related relationships	465,000		(45,939		)	419,061		8.42
Trade names	23,000		(3,212		)	19,788		3.85
Total acquired amortizable intangible assets	$	2,231,000	$	(183,318	)	$	2,047,682	7.34
IPR&D	513,000		—			513,000		n/a
Total acquired intangible assets	$	2,744,000	$	(183,318	)	$	2,560,682

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table presents the estimated future amortization expense of acquired amortizable intangible assets as of May 4, 2019 (in thousands):



Fiscal Year	Amount
Remainder of 2020	$	242,692
2021	315,469
2022	306,913
2023	299,485
2024	280,871
Thereafter	647,512
	$	2,092,942

Debt (Tables)

3 Months Ended

May 04, 2019

Debt Disclosure [Abstract]

Summary of Outstanding Debt

The following table summarizes the Company's outstanding debt at May 4, 2019 and February 2, 2019 (in thousands):



	May 4, 2019			February 2, 2019
Face Value Outstanding:
Term Loan	$	700,000		$	750,000
2023 Notes	500,000			500,000
2028 Notes	500,000			500,000
Total borrowings	$	1,700,000		$	1,750,000
Less: Unamortized debt discount and issuance cost	(15,719		)	(17,301		)
Net carrying amount of debt	$	1,684,281		$	1,732,699
Less: Current portion	—			—
Non-current portion	$	1,684,281		$	1,732,699

Aggregate Future Contractual Maturities of Debt

As of May 4, 2019, the aggregate future contractual maturities of the Company's outstanding debt, at face value, were as follows (in thousands):



Fiscal year	Amount
Remainder of 2020	$	—
2021	—
2022	700,000
2023	—
2024	500,000
Thereafter	500,000
Total	$	1,700,000

Restructuring and Other Related Charges (Tables)

3 Months Ended

May 04, 2019

Restructuring and Related Activities [Abstract]

Summary of Restructuring and Other Related Charges

The following table presents details related to the restructuring related charges as presented in the condensed Consolidated Statements of Operations (in thousands):



	Three Months Ended
	May 4, 2019			May 5, 2018
Severance and related costs	$	1,488		$	1,451
Facilities and related costs	478			28
Other exit-related costs	191			88
	2,157			1,567
Release of reserves:
Facilities and related costs	(188		)	—
Other exit-related costs	(127		)	—

Other restructuring charges
Impairment of equipment and other	633			—
Right-of-use asset amortization and impairment	3,207			—
	$	5,682		$	1,567

Reconciliation of Beginning and Ending Restructuring Liability Balances by Major Type of Costs

The following table sets forth a reconciliation of the beginning and ending restructuring liability balances by each major type of cost associated with the restructuring charges (in thousands):



	Severance and related costs			Facilities and related costs			Other exit-related costs			Total
Balance at February 2, 2019	$	12,403		$	26,904		$	1,049		$	40,356
Restructuring charges	1,488			478			191			2,157
Net cash payments	(9,009		)	(579		)	(887		)	(10,475		)
Release of reserves	—			(188		)	(127		)	(315		)
Effect of adoption of ASC 842	—			(25,893		)	—			(25,893		)
Balance at May 4, 2019	4,882			722			226			5,830
Less: non-current portion	—			658			—			658
Current portion	$	4,882		$	64		$	226		$	5,172

Revenue (Tables)

3 Months Ended

May 04, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table summarizes net revenue disaggregated by product group (in thousands, except percentages):



	Three Months Ended				Three Months Ended
	May 4, 2019		% of Total		May 5, 2018		% of Total
Net revenue by product group:
Storage (1)	$	278,667	42	%	$	317,069	52	%
Networking (2)	341,344		52	%	244,228		41	%
Other (3)	42,441		6	%	43,334		7	%
	$	662,452			$	604,631


1)	Storage products are comprised primarily of HDD, SSD Controllers, Fibre Channel Adapters and Data Center Storage Solutions.


2)	Networking products are comprised primarily of Ethernet Switches, Ethernet Transceivers, Ethernet NICs, Embedded Communications and Infrastructure Processors, Automotive Ethernet, Security Adapters and Processors as well as Connectivity products. In addition, this grouping includes a few legacy product lines in which the Company no longer invests, but will generate revenue for several years.


3)	Other products are comprised of primarily Printer Solutions, Application Processors and others.

The following table summarizes net revenue disaggregated by primary geographical market (in thousands, except percentages):



	Three Months Ended				Three Months Ended
	May 4, 2019		% of Total		May 5, 2018		% of Total
Net revenue based on destination of shipment:
China	$	246,134	37	%	$	276,622	46	%
United States	73,005		11	%	16,030		3	%
Malaysia	63,320		10	%	90,623		15	%
Philippines	62,488		9	%	57,767		9	%
Thailand	46,666		7	%	41,534		7	%
Other	170,839		26	%	122,055		20	%
	$	662,452			$	604,631

The following table summarizes net revenue disaggregated by customer type (in thousands, except percentages):



	Three Months Ended				Three Months Ended
	May 4, 2019		% of Total		May 5, 2018		% of Total
Net revenue by customer type:
Direct customers	$	514,558	78	%	$	470,476	78	%
Distributors	147,894		22	%	134,155		22	%
	$	662,452			$	604,631

Net Income Per Share (Tables)

3 Months Ended

May 04, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

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
	May 4, 2019			May 5, 2018
Numerator:
Net income (loss)	$	(48,450	)	$	128,612
Denominator:
Weighted average shares — basic	658,963			497,335
Effect of dilutive securities:
Share-based awards	—			11,381
Weighted average shares — diluted	658,963			508,716
Net income per share:
Basic	$	(0.07	)	$	0.26
Diluted	$	(0.07	)	$	0.25

Schedule of Anti-dilutive Potential Shares

Anti-dilutive potential shares are presented in the following table (in thousands):



	Three Months Ended
	May 4, 2019	May 5, 2018
Weighted average shares outstanding:
Share-based awards	13,969	5,237

Leases - Additional Information (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 03, 2019
Leases [Abstract]
Right-of-use assets	$ 118,624	$ 125,000
Operating lease liabilities	$ 146,647	$ 149,000

Leases - Lease Expense and Supplemental Cash Flow Information (Details) $ in Thousands	3 Months Ended
	May 04, 2019 USD ($)
Leases [Abstract]
Operating lease expenses	$ 10,668
Cash paid for amounts included in the measurement of operating lease liabilities	7,244
Right-of-use assets obtained in exchange for lease obligation	$ 1,137

Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 03, 2019
Leases [Abstract]
Right-of-use assets	$ 118,624	$ 125,000
Current portion of lease liabilities	27,959
Non-current portion of lease liabilities	118,688
Total lease liabilities	$ 146,647	$ 149,000

Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 03, 2019
Leases [Abstract]
Remainder of 2020	$ 27,835
2021	32,637
2022	29,578
2023	22,716
2024	14,647
Thereafter	40,422
Total lease payments	167,835
Less: Interest	21,188
Present value of lease liabilities	$ 146,647	$ 149,000

Leases - Future Minimum Lease Payments Under Previous Accounting Standard (Details) $ in Thousands	Feb. 02, 2019 USD ($)
Leases [Abstract]
2020	$ 43,286
2021	29,866
2022	26,612
2023	21,272
2024	13,690
Thereafter	40,100
Total	$ 174,826

Leases - Schedule of Average Lease Terms And Discount Rates (Details)	May 04, 2019
Leases [Abstract]
Weighted-average remaining lease term (years)	5 years 10 months 24 days
Weighted-average discount rate	3.85%

Business Combination - Additional Information (Details) - Cavium - USD ($) $ in Millions		3 Months Ended
	Jul. 06, 2018	May 04, 2019
Business Acquisition [Line Items]
Consideration paid	$ 6,200.0
Acquisition related costs		$ 53.7
Debt financing costs		22.8
Equity issuance costs		2.9
Prepaid Expenses and Other Current Assets
Business Acquisition [Line Items]
Debt financing costs		0.4
Other Non-current Assets
Business Acquisition [Line Items]
Debt financing costs		1.2
Long-term Debt
Business Acquisition [Line Items]
Debt financing costs		$ 9.2

Business Combination - Purchase Price Allocation (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019	Jul. 06, 2018
Business Acquisition [Line Items]
Goodwill	$ 5,500,000	$ 5,494,505
Cavium
Business Acquisition [Line Items]
Cash and cash equivalents		180,989
Accounts receivable		112,270
Inventories		330,778
Prepaid expense and other current assets		19,890
Assets held for sale		483
Property and equipment		115,428
Acquired intangible assets		2,744,000	$ 2,700,000
Other non-current assets		89,139
Goodwill		3,501,195
Accounts payable		(52,383)
Accrued liabilities		(126,007)
Accrued employee compensation		(34,813)
Deferred income		(2,466)
Current portion of long-term debt		(6,123)
Liabilities held for sale		(3,032)
Long-term debt		(600,005)
Non-current income taxes payable		(8,454)
Deferred tax liabilities		(82,994)
Other non-current liabilities		(16,099)
Total merger consideration		$ 6,161,796

Business Combination - Supplemental Pro Forma Information (Details) - Cavium $ in Thousands	3 Months Ended
	May 05, 2018 USD ($)
Business Acquisition [Line Items]
Pro forma net revenue	$ 835,392
Pro forma net income	$ 52,065

Supplemental Financial Information - Inventories (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019
Inventories:
Work-in-process	$ 171,695	$ 162,384
Finished goods	89,286	113,621
Total inventories	$ 260,981	$ 276,005

Supplemental Financial Information - Property and Equipment, Net (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,061,436	$ 1,031,839
Less: Accumulated depreciation and amortization	(734,837)	(712,861)
Total property and equipment, net	326,599	318,978
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	617,281	615,329
Land, buildings, and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	313,698	287,047
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	105,059	105,539
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 25,398	$ 23,924

Supplemental Financial Information - Accrued Liabilities (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019
Accrued liabilities:
Contract liabilities	$ 131,936	$ 142,378
Technology license obligations	50,876	48,018
Accrued income tax payable	36,894	47,079
Other	113,974	98,034
Total accrued liabilities	$ 333,680	$ 335,509

Supplemental Financial Information - Changes in Accumulated Other Comprehensive Income (Loss) by Components (Details) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Increase (Decrease) in AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 7,306,410	$ 4,141,413
Other comprehensive income (loss), net of tax	0	(82)
Balance at end of period	$ 7,230,132	4,285,511
Unrealized Gain (Loss) on Marketable Securities
Increase (Decrease) in AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period		(2,322)
Other comprehensive income (loss) before reclassifications		(733)
Amounts reclassified from accumulated other comprehensive income (loss)		651
Other comprehensive income (loss), net of tax		(82)
Balance at end of period		$ (2,404)

Supplemental Financial Information - Share Repurchase Program (Details) - USD ($) shares in Millions	3 Months Ended
	May 04, 2019	Oct. 16, 2018	Jan. 28, 2017	Nov. 17, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Authorized repurchase amount		$ 700,000,000	$ 3,250,000,000.00	$ 1,000,000,000.0
Remaining available for future share repurchases (in shares)	$ 904,000,000
Number of common shares repurchased and retired during period (in shares)	2.4
Value of common shares repurchased and retired during period	$ 50,000,000
Total shares repurchased to date (in shares)	294.8
Total amount of shares repurchased to date	$ 3,900,000,000

Fair Value Measurements (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019
Assets
Other non-current assets	$ 625	$ 727
Total assets	36,374	91,491
Money market funds
Assets
Cash equivalents	6,749	16,829
Time deposits
Assets
Cash equivalents	29,000	73,935
Level 1
Assets
Other non-current assets	0	0
Total assets	6,749	16,829
Level 1 \| Money market funds
Assets
Cash equivalents	6,749	16,829
Level 1 \| Time deposits
Assets
Cash equivalents	0	0
Level 2
Assets
Other non-current assets	625	727
Total assets	29,625	74,662
Level 2 \| Notes
Assets
Estimated aggregate fair value of debt	1,000,000	1,000,000
Level 2 \| Money market funds
Assets
Cash equivalents	0	0
Level 2 \| Time deposits
Assets
Cash equivalents	29,000	73,935
Level 3
Assets
Other non-current assets	0	0
Total assets	0	0
Level 3 \| Money market funds
Assets
Cash equivalents	0	0
Level 3 \| Time deposits
Assets
Cash equivalents	$ 0	$ 0

Goodwill and Acquired Intangible Assets, Net - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended
	Jul. 06, 2018	May 04, 2019	May 05, 2018	Feb. 02, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill		$ 5,500,000		$ 5,494,505
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining amortization period (years)		7 years 2 months 9 days	7 years 4 months 2 days
Amortization of acquired intangible assets		$ 79,740	$ 0
IPR&D \| Minimum
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining amortization period (years)	4 years
IPR&D \| Maximum
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining amortization period (years)	9 years
Cavium
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill				3,501,195
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 2,700,000			$ 2,744,000

Goodwill and Acquired Intangible Assets, Net - Net Carrying Amounts and Weighted Average Amortization Period (Details) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018	Feb. 02, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	$ 2,356,000		$ 2,231,000
Accumulated Amortization	(263,058)		(183,318)
Net Carrying Amounts	$ 2,092,942		2,047,682
Weighted average remaining amortization period (years)	7 years 2 months 9 days	7 years 4 months 2 days
Gross Carrying Amounts, Total acquired intangible assets	$ 2,744,000		2,744,000
Accumulated Amortization	(263,058)		(183,318)
IPR&D	388,000		513,000
Net Carrying Amounts, Total acquired intangible assets	2,480,942		2,560,682
Developed technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	1,868,000		1,743,000
Accumulated Amortization	(194,073)		(134,167)
Net Carrying Amounts	$ 1,673,927		1,608,833
Weighted average remaining amortization period (years)	7 years	7 years 1 month 6 days
Accumulated Amortization	$ (194,073)		(134,167)
Customer contracts and related relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	465,000		465,000
Accumulated Amortization	(64,395)		(45,939)
Net Carrying Amounts	$ 400,605		419,061
Weighted average remaining amortization period (years)	8 years 2 months 1 day	8 years 5 months 1 day
Accumulated Amortization	$ (64,395)		(45,939)
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	23,000		23,000
Accumulated Amortization	(4,590)		(3,212)
Net Carrying Amounts	$ 18,410		19,788
Weighted average remaining amortization period (years)	3 years 7 months 13 days	3 years 10 months 6 days
Accumulated Amortization	$ (4,590)		$ (3,212)

Goodwill and Acquired Intangible Assets, Net - Future Amortization (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2020	$ 242,692
2021	315,469
2022	306,913
2023	299,485
2024	280,871
Thereafter	647,512
Net Carrying Amounts	$ 2,092,942	$ 2,047,682

Debt - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended
Debt - Additional Information (Details) - USD ($)	Jun. 30, 2018	May 04, 2019	Jun. 22, 2018	Jun. 13, 2018
Debt Instrument [Line Items]
Interest expense		$ 19,300,000
Bridge Loan
Debt Instrument [Line Items]
Amount of debt extinguished	$ 850,000,000
Term Loan
Debt Instrument [Line Items]
Borrowing capacity				$ 900,000,000
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity				$ 500,000,000
Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount			$ 1,000,000,000

Debt - Term Loan and Revolving Credit Facility (Details)		3 Months Ended
	Jun. 13, 2018 USD ($)	May 04, 2019 USD ($)	May 05, 2018 USD ($)
Line of Credit Facility [Line Items]
Payment of principal		$ 50,000,000	$ 0
Unused commitment fee percentage	0.175%
Leverage ratio	3
Line of Credit \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowing capacity	$ 500,000,000
Debt term		5 years
Amount available for draw		$ 500,000,000
Line of Credit \| Revolving Credit Facility \| LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	1.50%
Term Loan
Line of Credit Facility [Line Items]
Borrowing capacity	$ 900,000,000
Debt term		3 years
Effective interest rate		4.334%
Payment of principal		$ 50,000,000
Write off of unamortized debt issuance costs		$ 500,000
Term Loan \| LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	1.375%

Debt - Senior Unsecured Notes (Details) - Senior Notes	Jun. 22, 2018 USD ($)
Debt Instrument [Line Items]
Aggregate principal amount	$ 1,000,000,000
Redemption price percentage	101.00%
2023 Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 500,000,000
Stated interest rate	4.20%
Effective interest rate	4.423%
2028 Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 500,000,000
Stated interest rate	4.875%
Effective interest rate	5.012%

Debt - Summary of Outstanding Debt (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019
Debt Instrument [Line Items]
Total borrowings	$ 1,700,000	$ 1,750,000
Less: Unamortized debt discount and issuance cost	(15,719)	(17,301)
Net carrying amount of debt	1,684,281	1,732,699
Less: Current portion	0	0
Non-current portion	1,684,281	1,732,699
Term Loan
Debt Instrument [Line Items]
Total borrowings	700,000	750,000
Notes \| 2023 Notes
Debt Instrument [Line Items]
Total borrowings	500,000	500,000
Notes \| 2028 Notes
Debt Instrument [Line Items]
Total borrowings	$ 500,000	$ 500,000

Debt - Future Maturities (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019
Fiscal year
Remainder of 2020	$ 0
2021	0
2022	700,000
2023	0
2024	500,000
Thereafter	500,000
Net carrying amount of debt	$ 1,684,281	$ 1,732,699

Restructuring and Other Related Charges - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Restructuring and Related Activities [Abstract]
Severance and related costs	$ 1,488	$ 1,451
Facilities and related costs	478	28
Other exit-related costs	191	88
Restructuring charges	2,157	1,567
Restructuring Cost and Reserve [Line Items]
Release of reserves	(315)
Other restructuring charges
Impairment of equipment and other	633	0
Right-of-use asset amortization and impairment	3,207	0
Restructuring and other related charges	5,682	1,567
Facilities and related costs
Restructuring and Related Activities [Abstract]
Restructuring charges	478
Restructuring Cost and Reserve [Line Items]
Release of reserves	(188)	0
Other restructuring charges
Restructuring and other related charges	300
Other exit-related costs
Restructuring and Related Activities [Abstract]
Restructuring charges	191
Restructuring Cost and Reserve [Line Items]
Release of reserves	(127)	0
Other restructuring charges
Restructuring and other related charges	$ 100	$ 100

Restructuring and Other Related Charges - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	$ 5,682	$ 1,567
Right-of-use asset amortization and impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	3,200
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	1,500	1,500
Asset write off costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	600
Facilities and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	300
Other exit-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other related charges	$ 100	$ 100

Restructuring and Other Related Charges - Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 40,356
Restructuring charges	2,157	$ 1,567
Net cash payments	(10,475)
Release of reserves	(315)
Effect of adoption of ASC 842	(25,893)
Balance at end of period	5,830
Less: non-current portion	658
Current portion	5,172
Severance and related costs
Restructuring Reserve [Roll Forward]
Balance at beginning of period	12,403
Restructuring charges	1,488
Net cash payments	(9,009)
Release of reserves	0
Effect of adoption of ASC 842	0
Balance at end of period	4,882
Current portion	4,882
Facilities and related costs
Restructuring Reserve [Roll Forward]
Balance at beginning of period	26,904
Restructuring charges	478
Net cash payments	(579)
Release of reserves	(188)	0
Effect of adoption of ASC 842	(25,893)
Balance at end of period	722
Less: non-current portion	658
Current portion	64
Other exit-related costs
Restructuring Reserve [Roll Forward]
Balance at beginning of period	1,049
Restructuring charges	191
Net cash payments	(887)
Release of reserves	(127)	$ 0
Effect of adoption of ASC 842	0
Balance at end of period	226
Current portion	$ 226

Commitments and Contingencies (Details) $ in Millions	May 04, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Outstanding purchase orders	$ 152.4

Revenue - Net Revenue by Product Group (Details) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Disaggregation of Revenue [Line Items]
Net revenue	$ 662,452	$ 604,631
Storage
Disaggregation of Revenue [Line Items]
Net revenue	$ 278,667	$ 317,069
Storage \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	42.00%	52.00%
Networking
Disaggregation of Revenue [Line Items]
Net revenue	$ 341,344	$ 244,228
Networking \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	52.00%	41.00%
Other
Disaggregation of Revenue [Line Items]
Net revenue	$ 42,441	$ 43,334
Other \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	6.00%	7.00%

Revenue - Net Revenue Based on Destination of Shipment (Details) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Disaggregation of Revenue [Line Items]
Net revenue	$ 662,452	$ 604,631
China
Disaggregation of Revenue [Line Items]
Net revenue	$ 246,134	$ 276,622
China \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	37.00%	46.00%
United States
Disaggregation of Revenue [Line Items]
Net revenue	$ 73,005	$ 16,030
United States \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	11.00%	3.00%
Malaysia
Disaggregation of Revenue [Line Items]
Net revenue	$ 63,320	$ 90,623
Malaysia \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	10.00%	15.00%
Philippines
Disaggregation of Revenue [Line Items]
Net revenue	$ 62,488	$ 57,767
Philippines \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	9.00%	9.00%
Thailand
Disaggregation of Revenue [Line Items]
Net revenue	$ 46,666	$ 41,534
Thailand \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	7.00%	7.00%
Other
Disaggregation of Revenue [Line Items]
Net revenue	$ 170,839	$ 122,055
Other \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	26.00%	20.00%

Revenue - Net Revenue by Customer Type (Details) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Disaggregation of Revenue [Line Items]
Net revenue	$ 662,452	$ 604,631
Direct customers
Disaggregation of Revenue [Line Items]
Net revenue	$ 514,558	$ 470,476
Direct customers \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	78.00%	78.00%
Distributors
Disaggregation of Revenue [Line Items]
Net revenue	$ 147,894	$ 134,155
Distributors \| Net revenue
Disaggregation of Revenue [Line Items]
% of Total	22.00%	22.00%

Revenue - Contract Liabilities (Details) $ in Millions	3 Months Ended
Revenue - Contract Liabilities (Details) $ in Millions	May 04, 2019 USD ($)
Change in Contract with Customer, Asset and Liability [Abstract]
Beginning balance	$ 142.4
Estimates for additional shipments	129.5
Credit memos issued	138.9
Ending balance	$ 133.0

Income Tax (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	May 04, 2019	May 05, 2018
Income Tax Disclosure [Abstract]
Current income tax expense (benefit)	$ 7.3
Unrecognized tax benefits decrease	3.2
Tax due on amounts previously considered permanently reinvested	9.9
Uncertain tax positions, decrease from the lapse of statutes of limitation in various jurisdictions during next 12 months	15.3
Tax incentives, decrease in foreign taxes	$ 0.1	$ 0.7
Tax incentives, effect on net income per share (less than) (in usd per share)	$ 0.01	$ 0.01
Income Taxes [Line Items]
Cash, cash equivalents and short-term investments	$ 572.0
Undistributed earnings of foreign subsidiaries	138.0
Foreign Subsidiaries
Income Taxes [Line Items]
Cash, cash equivalents and short-term investments	$ 543.0

Net Income Per Share - Computations of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Numerator:
Net income (loss)	$ (48,450)	$ 128,612
Denominator:
Weighted average shares — basic (in shares)	658,963	497,335
Effect of dilutive securities:
Share-based awards (in shares)	0	11,381
Weighted average shares — diluted (in shares)	658,963	508,716
Net income per share:
Net income (loss) per share - Basic (in usd per share)	$ (0.07)	$ 0.26
Net income (loss) per share - Diluted (in usd per share)	$ (0.07)	$ 0.25

Net Income Per Share - Anti-dilutive Potential Shares (Details) - shares shares in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Earnings Per Share [Abstract]
Share-based awards (in shares)	13,969	5,237

Subsequent Events (Details) $ / shares in Units, $ in Thousands				3 Months Ended		12 Months Ended
	May 29, 2019 USD ($) employee	May 20, 2019 USD ($)	May 06, 2019 USD ($) $ / shares	May 04, 2019 USD ($)	May 05, 2018 USD ($)	Feb. 02, 2019 USD ($)	Jun. 06, 2019 shares
Subsequent Event [Line Items]
Net revenue				$ 662,452	$ 604,631
Subsequent Event
Subsequent Event [Line Items]
Shares available under warrant (in shares) \| shares							9,000,000
Aquantia, Corp. \| Subsequent Event
Subsequent Event [Line Items]
Acquisition share price (in usd per share) \| $ / shares			$ 13.25
Consideration paid			$ 452,000
Avera Semiconductor \| Subsequent Event
Subsequent Event [Line Items]
Consideration paid		$ 650,000
Contingent consideration		$ 90,000
Wi-Fi Connectivity Business
Subsequent Event [Line Items]
Net revenue						$ 300,000
Wi-Fi Connectivity Business \| Subsequent Event
Subsequent Event [Line Items]
Proceeds from divestiture of businesses	$ 1,760,000
Number of employees employed by disposal group \| employee	550

Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 34,171,000
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 34,171,000