Xilinx (XLNX) 10-Q 22 Oct 20 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Sep. 26, 2020	Oct. 09, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 26, 2020
Document Transition Report	false
Entity File Number	000-18548
Entity Registrant Name	XILINX, INC
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	2100 Logic Drive
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Tax Identification Number	77-0188631
Entity Address, Postal Zip Code	95124
City Area Code	408
Local Phone Number	559-7778
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	XLNX
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		245,059,000
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000743988
Current Fiscal Year End Date	--04-03

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Net revenues	$ 766,535	$ 833,366	$ 1,493,208	$ 1,682,998
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	218,120	287,372	444,223	570,872
Cost, Depreciation and Amortization	6,696	5,734	13,393	9,003
Cost of revenues	224,816	293,106	457,616	579,875
Gross margin	541,719	540,260	1,035,592	1,103,123
Operating expenses:
Research and development	219,647	222,979	429,760	427,079
Selling, general and administrative	113,793	111,596	219,176	219,021
Amortization of acquisition-related intangibles	2,862	2,169	5,724	2,569
Total operating expenses	336,302	336,744	654,660	648,669
Operating income	205,417	203,516	380,932	454,454
Interest and other income (expense), net	(10,771)	12,329	(22,924)	23,941
Income before income taxes	194,646	215,845	358,008	478,395
Provision (benefit) for income taxes	830	(11,148)	70,356	9,943
Net income	$ 193,816	$ 226,993	$ 287,652	$ 468,452
Net income per common share:
Basic (in dollars per share)	$ 0.79	$ 0.90	$ 1.18	$ 1.85
Diluted (in dollars per share)	0.79	0.89	1.17	1.83
Common Stock, Dividends, Per Share, Declared	$ 0.38	$ 0.37	$ 0.76	$ 0.74
Shares used in per share calculations:
Basic (in shares)	244,837	252,399	243,602	252,728
Diluted (in shares)	246,763	255,269	245,847	256,509

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 193,816	$ 226,993	$ 287,652	$ 468,452
Other comprehensive income (loss), net of tax:
Change in net unrealized gains (losses) on available-for-sale securities	(100)	1,961	267	11,716
Reclassification adjustment for (gains) losses on available-for-sale securities	132	(366)	(145)	(799)
Change in unrealized gains (losses) on hedging transactions	2,420	(4,442)	9,549	(4,013)
Reclassification adjustment for (gains) losses on hedging transactions	(1,337)	1,329	350	2,151
Cumulative translation adjustment, net	4,834	(2,146)	1,968	(2,781)
Other comprehensive income (loss)	5,949	(3,664)	11,989	6,274
Total comprehensive income	$ 199,765	$ 223,329	$ 299,641	$ 474,726

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 26, 2020	Mar. 28, 2020
Current assets:
Cash and cash equivalents	$ 1,170,776	$ 1,777,703
Short-term investments	1,925,160	489,513
Accounts receivable, net	362,497	273,028
Inventories	282,048	304,340
Prepaid expenses and other current assets	73,034	64,557
Total current assets	3,813,515	2,909,141
Property, plant and equipment, at cost:	999,411	989,315
Accumulated depreciation and amortization	(641,931)	(616,741)
Net property, plant and equipment	357,480	372,574
Goodwill	619,413	619,196
Acquisition-related intangibles, net	181,227	200,344
Other assets	604,296	592,079
Total Assets	5,575,931	4,693,334
Current liabilities:
Accounts payable	106,021	102,131
Accrued payroll and related liabilities	312,356	231,439
Income taxes payable	38,386	36,217
Other accrued liabilities	134,146	216,634
Current portion of long-term debt	499,662	499,260
Total current liabilities	1,090,571	1,085,681
Long-term debt	1,492,066	747,110
Long-term income taxes payable	470,400	447,383
Other long-term liabilities	70,057	98,111
Commitments and contingencies (Note 17)
Stockholders' equity:
Preferred stock, $.01 par value	0	0
Common stock, $.01 par value	2,450	2,438
Additional paid-in capital	1,221,254	1,145,083
Retained earnings	1,237,421	1,187,805
Accumulated other comprehensive loss	(8,288)	(20,277)
Total stockholders’ equity	2,452,837	2,315,049
Total Liabilities and Stockholders’ Equity	$ 5,575,931	$ 4,693,334

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 26, 2020	Mar. 28, 2020
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019
Cash flows from operating activities:
Net income	$ 287,652	$ 468,452
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of software	61,998	42,551
Amortization - others	30,375	22,050
Stock-based compensation	108,822	92,575
Deferred income taxes	(10,028)	11,342
Others	3,462	(19,580)
Changes in assets and liabilities:
Accounts receivable, net	(89,468)	5,523
Inventories	22,292	(14,675)
Prepaid expenses and other current assets	(995)	(1,860)
Other assets	(21,530)	(12,539)
Accounts payable	(3,035)	(19,786)
Accrued liabilities	81,781	21
Income taxes payable	21,728	(52,164)
Net cash provided by operating activities	493,054	521,910
Cash flows from investing activities:
Purchases of available-for-sale securities	(2,743,360)	(671,515)
Proceeds from sale and maturity of available-for-sale and equity securities	1,231,731	1,458,286
Purchases of property, plant and equipment and software	(30,792)	(62,842)
Other investing activities	(12,198)	(5,453)
Acquisition of business, net of cash acquired	0	(454,613)
Net cash provided by (used in) investing activities	(1,554,619)	263,863
Cash flows from financing activities:
Repurchases of common stock	(53,682)	(477,245)
Taxes paid related to net share settlements of restricted stock units	(53,425)	(71,778)
Proceeds from issuance of common stock through various stock plans	20,114	19,802
Payment of dividends to stockholders	(185,519)	(187,445)
Proceeds from issuance of long-term debt, net	744,427	0
Other financing activities	(17,277)	(9,784)
Net cash provided by (used in) financing activities	454,638	(726,450)
Net increase (decrease) in cash and cash equivalents	(606,927)	59,323
Cash and cash equivalents at beginning of period		1,544,490
Cash and cash equivalents at end of period	1,170,776	1,603,813
Supplemental disclosure of cash flow information:
Interest paid	21,289	30,513
Income taxes paid, net	$ 59,145	$ 50,332

Condensed Consolidated Statemen

Condensed Consolidated Statements of Stockholders' Equity Statement - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Common Stock Outstanding, beginning balance (in shares) at Mar. 30, 2019		253,891
Beginning balance at Mar. 30, 2019	$ 2,861,509	$ 2,539	$ 1,005,411	$ 1,876,969	$ (23,410)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	468,452			468,452
Other comprehensive income	6,274				6,274
Tax withholding related to vesting of restricted stock units and other (in shares)		2,018
Issuance of common shares under employee stock plans, net	(51,976)	$ 20	(51,996)
Repurchase and retirement of common stock (in shares)		(4,443)
Repurchase and retirement of common stock	(493,484)	$ (44)	(67,768)	(425,672)
Stock-based compensation expense	$ 92,575		92,575
Common Stock, Dividends, Per Share, Declared	$ 0.74
Cash dividends declared	$ (187,445)			(187,445)
Common Stock Outstanding, ending balance (in shares) at Sep. 28, 2019		251,466
Ending balance at Sep. 28, 2019	2,695,905	$ 2,515	978,222	1,732,304	(17,136)
Common Stock Outstanding, beginning balance (in shares) at Jun. 29, 2019		251,020
Beginning balance at Jun. 29, 2019	2,612,584	$ 2,510	880,305	1,743,241	(13,472)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	226,993			226,993
Other comprehensive income	(3,664)				(3,664)
Tax withholding related to vesting of restricted stock units and other (in shares)		1,921
Issuance of common shares under employee stock plans, net	(47,856)	$ 20	(47,876)
Repurchase and retirement of common stock (in shares)		(1,475)
Repurchase and retirement of common stock	(48,490)	$ (15)	95,971	(144,446)
Stock-based compensation expense	$ 49,822		49,822
Common Stock, Dividends, Per Share, Declared	$ 0.37
Cash dividends declared	$ (93,484)			(93,484)
Common Stock Outstanding, ending balance (in shares) at Sep. 28, 2019		251,466
Ending balance at Sep. 28, 2019	2,695,905	$ 2,515	978,222	1,732,304	(17,136)
Common Stock Outstanding, beginning balance (in shares) at Mar. 28, 2020		243,810
Beginning balance at Mar. 28, 2020	2,315,049	$ 2,438	1,145,083	1,187,805	(20,277)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	287,652			287,652
Other comprehensive income	11,989				11,989
Tax withholding related to vesting of restricted stock units and other (in shares)		1,934
Issuance of common shares under employee stock plans, net	(35,154)	$ 19	(35,173)
Repurchase and retirement of common stock (in shares)		(685)
Repurchase and retirement of common stock	(50,002)	$ (7)	2,522	(52,517)
Stock-based compensation expense	$ 108,822		108,822
Common Stock, Dividends, Per Share, Declared	$ 0.76
Cash dividends declared	$ (185,519)			(185,519)
Common Stock Outstanding, ending balance (in shares) at Sep. 26, 2020		245,059
Ending balance at Sep. 26, 2020	2,452,837	$ 2,450	1,221,254	1,237,421	(8,288)
Common Stock Outstanding, beginning balance (in shares) at Jun. 27, 2020		243,231
Beginning balance at Jun. 27, 2020	2,319,653	$ 2,432	1,194,748	1,136,710	(14,237)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	193,816			193,816
Other comprehensive income	5,949				5,949
Tax withholding related to vesting of restricted stock units and other (in shares)		1,828
Issuance of common shares under employee stock plans, net	(31,915)	$ 18	(31,933)
Stock-based compensation expense	$ 58,439		58,439
Common Stock, Dividends, Per Share, Declared	$ 0.38
Cash dividends declared	$ (93,105)			(93,105)
Common Stock Outstanding, ending balance (in shares) at Sep. 26, 2020		245,059
Ending balance at Sep. 26, 2020	$ 2,452,837	$ 2,450	$ 1,221,254	$ 1,237,421	$ (8,288)

Basis of Presentation

Basis of Presentation	6 Months Ended
	Sep. 26, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Basis of Presentation The accompanying interim condensed consolidated financial statements have been prepared in conformity with United States (U.S.) generally accepted accounting principles (GAAP) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X, and should be read in conjunction with the Xilinx, Inc. (Xilinx or the Company) consolidated financial statements filed with the U.S. Securities and Exchange Commission (SEC) on Form 10-K for the fiscal year ended March 28, 2020. The interim financial statements are unaudited, but reflect all adjustments which are, in the opinion of management, of a normal, recurring nature necessary to provide a fair statement of results for the interim periods presented. The results of operations for the interim periods shown in this report are not necessarily indicative of the results that may be expected for the fiscal year ending April 3, 2021 or any future period. The Company uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2021 and fiscal 2020 are 53-week and 52-week years ending on April 3, 2021 and March 28, 2020, respectively. The quarters ended September 26, 2020 and September 28, 2019 each consisted of 13 weeks.

Recent Accounting Changes and A

Recent Accounting Changes and Accounting Pronouncements	6 Months Ended
	Sep. 26, 2020
Accounting Changes and Error Corrections [Abstract]
Accounting Changes and Error Corrections [Text Block]	Recent Accounting Changes and Accounting Pronouncements Recent Accounting Pronouncements Adopted Credit Losses In June 2016, the Financial Accounting Standards Board (FASB) issued authoritative guidance to replace the incurred loss impairment methodology under current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The guidance requires a forward-looking expected credit loss model for financial assets, including accounts receivable and available for sale debt securities. The Company adopted this authoritative guidance in the first quarter of fiscal 2021 and the impact of the adoption was not material to the Company's condensed consolidated financial statements. Goodwill In January 2017, the FASB issued authoritative guidance that simplifies the accounting for goodwill impairment. The authoritative guidance removes Step 2 of the goodwill impairment test, which required a hypothetical purchase price allocation. Goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance remains largely unchanged. Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. The Company adopted this authoritative guidance in the first quarter of fiscal 2021 and the adoption did not impact the Company's condensed consolidated financial statements. Cloud Computing Arrangements In August 2018, the FASB issued new guidance requiring a customer in a cloud computing arrangement (i.e., hosting arrangement) that is a service contract to follow the internal-use software guidance to determine which implementation costs to capitalize as assets or expense as incurred. Capitalized implementation costs related to a hosting arrangement that is a service contract will be amortized over the term of the hosting arrangement, beginning when the module or component of the hosting arrangement is ready for its intended use. The Company adopted this authoritative guidance in the first quarter of fiscal 2021 and the impact of the adoption was not material to the Company's condensed consolidated financial statements. Recent Accounting Pronouncements Not Yet Adopted Income Taxes In December 2019, the FASB issued authoritative guidance that simplifies the accounting for income taxes as part of the overall initiative to reduce complexity in accounting standards. Amendments include removal of certain exceptions to the general principles of Accounting Standards Codification 740, Income Taxes. The amendments also include simplification in several other areas, such as recognition of deferred tax assets on step-up in tax basis in goodwill and accounting for franchise tax that is partially based on income. For public entities, the guidance is effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years, which for Xilinx would be the first quarter of fiscal 2022. Early adoption is permitted in any interim or annual period, with any adjustments reflected as of the beginning of the fiscal year of adoption. The Company has decided not to early adopt this new authoritative guidance and is currently evaluating the impact of this authoritative guidance on its consolidated financial statements.

Significant Customers and Conce

Significant Customers and Concentrations of Credit Risk (Notes)	6 Months Ended
	Sep. 26, 2020
Significant Customers and Concentrations of Credit Risk [Abstract]
Concentration Risk Disclosure [Text Block]	Significant Customers and Concentrations of Credit Risk Avnet, Inc. (Avnet), one of the Company’s distributors, distributes the Company’s products worldwide. As of September 26, 2020 and March 28, 2020, Avnet accounted for 25% and 31% of the Company’s total net accounts receivable, respectively. Net revenues from Avnet accounted for 41% and 43% of the Company’s worldwide net revenues in the second quarter and the first six months of fiscal 2021, respectively. Net revenues from Avnet accounted for 40% of the Company’s worldwide net revenues in both the second quarter and the first six months of fiscal 2020. While the percentage of worldwide net revenues from Avnet fluctuates from period to period, overall the percentage is within historical ranges. For the second quarter and the first six months of fiscal 2021, approximately 52% and 57% of the Company's net revenues were from products sold to distributors for subsequent resale to original equipment manufacturers (OEMs) or their subcontract manufacturers, respectively. For both the second quarter and the first six months of fiscal 2020 the percentages of the Company's net revenues from distributors were 49%. No other distributor or end customer accounted for more than 10% of the Company’s worldwide net revenues for the second quarter and the first six months of fiscal 2021. No other distributor accounted for more than 10% of the Company’s worldwide net revenues for the second quarter and the first six months of fiscal 2020. However, one end customer accounted for 12% and 10% of the Company's worldwide net revenues for the second quarter and the first six months of fiscal 2020, respectively. Xilinx is subject to concentrations of credit risk primarily in its trade accounts receivable and investments in debt securities to the extent of the amounts recorded on the condensed consolidated balance sheet. The Company attempts to mitigate the concentrations of credit risk in its trade receivables through its credit evaluation process, collection terms, distributor sales to diverse end customers and through geographical dispersion of sales. Xilinx generally does not require collateral for receivables from its end customers or distributors. The Company mitigates concentrations of credit risk in its investments in debt securities by currently investing approximately 97% of its portfolio in AA (or its equivalent) or higher-grade securities as rated by Standard & Poor’s or Moody’s Investors Service. The Company’s methods to arrive at investment decisions are not solely based on the rating agencies’ credit ratings. Xilinx also performs additional credit due diligence and conducts regular portfolio credit reviews, including a review of counterparty credit risk related to the Company’s forward currency exchange contracts. Additionally, Xilinx limits its investments in the debt securities of a single issuer based upon the issuer’s credit rating and attempts to further mitigate credit risk by diversifying risk across geographies and type of issuer. As of September 26, 2020, all of the mortgage-backed securities in the Company's investment portfolio were issued by U.S. government-sponsored enterprises and agencies and are rated AA+ by Standard & Poor’s and Aaa by Moody’s Investors Service.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Sep. 26, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value MeasurementsThe authoritative guidance for fair value measurements established by the FASB defines fair value as the exchange price that would be received from selling an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market in which Xilinx would transact and also considers assumptions that market participants would use when pricing the asset or liability, such as inherent risk, transfer restrictions and risk of nonperformance. The Company determines the fair value for marketable debt securities using industry standard pricing services, data providers and other third-party sources and by internally performing valuation testing and analysis. The Company primarily uses a consensus price or weighted-average price for its fair value assessment. The Company determines the consensus price using market prices from a variety of industry standard pricing services, data providers, security master files from large financial institutions and other third-party sources and uses those multiple prices as inputs into a distribution-curve-based algorithm to determine the daily market value. The pricing services use multiple inputs to determine market prices, including reportable trades, benchmark yield curves, credit spreads and broker/dealer quotes as well as other industry and economic events. For certain securities with short maturities, such as discount commercial paper and certificates of deposit, the security is accreted from purchase price to face value at maturity. If a subsequent transaction on the same security is observed in the marketplace, the price on the subsequent transaction is used as the current daily market price and the security will be accreted to face value based on the revised price. The Company validates the consensus prices by taking random samples from each asset type and corroborating those prices using reported trade activity, benchmark yield curves, binding broker/dealer quotes or other relevant price information. There have not been any changes to the Company’s fair value methodology during the second quarter of fiscal 2021 and the Company did not adjust or override any fair value measurements as of September 26, 2020. Fair Value Hierarchy The fair value framework requires the categorization of assets and liabilities into three levels based upon the assumptions (inputs) used to price the assets or liabilities. The guidance for fair value measurements requires that assets and liabilities carried at fair value be classified and disclosed in one of the following categories: Level 1 — Quoted (unadjusted) prices in active markets for identical assets or liabilities. Level 2 — Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability. Level 3 — Unobservable inputs to the valuation methodology that are supported by little or no market activity and that are significant to the measurement of the fair value of the assets or liabilities. Level 3 assets and liabilities include those whose fair value measurements are determined using pricing models, discounted cash flow methodologies or similar valuation techniques, as well as significant management judgment or estimation. Assets and Liabilities Measured at Fair Value on a Recurring Basis In instances where the inputs used to measure fair value fall into different levels of the fair value hierarchy, the fair value measurement has been determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular item to the fair value measurement in its entirety requires judgment, including the consideration of inputs specific to the asset or liability. The following tables present information about the Company’s assets and liabilities measured at fair value on a recurring basis as of September 26, 2020 and March 28, 2020: September 26, 2020 (In thousands) Total Fair Assets Cash equivalents: Money market funds $ 385,263 $ — $ — $ 385,263 Financial institution securities — 80,834 — 80,834 Non-financial institution securities — 269,884 — 269,884 U.S. government and agency securities 64,992 122,989 — 187,981 Foreign government and agency securities — 110,237 — 110,237 Short-term investments: Financial institution securities — 325,000 — 325,000 Non-financial institution securities — 402,103 — 402,103 U.S. government and agency securities 474,867 112,593 — 587,460 Foreign government and agency securities — 489,624 — 489,624 Mortgage-backed securities — 99,260 — 99,260 Asset-backed securities — 875 — 875 Commercial mortgage-backed securities — 19,300 — 19,300 Marketable equity securities 1,538 — — 1,538 Derivative financial instruments, net — 2,416 — 2,416 Total assets measured at fair value $ 926,660 $ 2,035,115 $ — $ 2,961,775 March 28, 2020 (In thousands) Total Fair Assets Cash equivalents: Money market funds $ 656,038 $ — $ — $ 656,038 Financial institution securities — 175,000 — 175,000 Non-financial institution securities — 361,692 — 361,692 U.S. government and agency securities 150,999 62,274 — 213,273 Foreign government and agency securities — 244,300 — 244,300 Short-term investments: Financial institution securities — 150,000 — 150,000 Non-financial institution securities — 115,043 — 115,043 U.S. government and agency securities 1,000 2,000 — 3,000 Foreign government and agency securities — 9,973 — 9,973 Mortgage-backed securities — 158,804 — 158,804 Asset-backed securities — 2,549 — 2,549 Commercial mortgage-backed securities — 50,144 — 50,144 Total assets measured at fair value $ 808,037 $ 1,331,779 $ — $ 2,139,816 Liabilities Derivative financial instruments, net $ — $ 12,381 $ — $ 12,381 Total liabilities measured at fair value $ — $ 12,381 $ — $ 12,381 Net assets measured at fair value $ 808,037 $ 1,319,398 $ — $ 2,127,435 For certain of the Company’s financial instruments, including cash held in banks, accounts receivable and accounts payable, the carrying amounts approximate fair value due to their short maturities, and are therefore excluded from the fair value tables above. Financial Instruments Not Recorded at Fair Value on a Recurring Basis The Company's $500.0 million principal amount of 3.000% notes due March 15, 2021 (2021 Notes), $750.0 million principal amount of 2.950% senior notes due June 1, 2024 (2024 Notes) and $750.0 million principal amount of 2.375% senior notes due June 1, 2030 (2030 Notes) are measured at fair value on a quarterly basis for disclosure purposes. The fair values of the 2021 Notes, 2024 Notes and 2030 Notes as of September 26, 2020 were approximately $506.0 million, $804.0 million and $793.3 million, respectively, based on the last trading price for the period (classified as Level 2 in fair value hierarchy due to relatively low trading volume). Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis As of September 26, 2020, the Company had non-marketable securities in private companies of $107.4 million, which were classified as Level 3 assets. The Company’s investments in non-marketable equity securities of private companies are recorded at fair value if the Company recognizes an observable price adjustment or an impairment. Such impairment losses or observable price adjustments were not material during all periods presented. The Company’s investments in non-financial assets such as property, plant and equipment, goodwill and acquisition-related intangibles, are recorded at cost (net of accumulated depreciation or amortization, where applicable). These non-financial assets are reduced to fair value when impaired.

Financial Instruments

Financial Instruments	6 Months Ended
	Sep. 26, 2020
Investments, All Other Investments [Abstract]
Financial Instruments	Financial Instruments The following is a summary of cash equivalents and available-for-sale securities as of the end of the periods presented: September 26, 2020 March 28, 2020 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Money market funds $ 385,263 $ — $ — $ 385,263 $ 656,038 $ — $ — $ 656,038 Financial institution securities 405,834 — — 405,834 325,000 — — 325,000 Non-financial institution securities 671,987 — — 671,987 476,735 — — 476,735 U.S. government and agency securities 775,394 51 (4) 775,441 216,178 95 — 216,273 Foreign government and agency securities 599,862 — (1) 599,861 254,283 7 (17) 254,273 Mortgage-backed securities 97,500 2,017 (257) 99,260 156,836 2,445 (477) 158,804 Asset-backed securities 857 18 — 875 2,533 18 (2) 2,549 Commercial mortgage- backed securities 19,359 133 (192) 19,300 50,566 134 (556) 50,144 $ 2,956,056 $ 2,219 $ (454) $ 2,957,821 $ 2,138,169 $ 2,699 $ (1,052) $ 2,139,816 Financial institution securities include securities issued or managed by financial institutions in various forms, such as commercial paper and time deposits. Substantially all time deposits were issued by institutions outside the U.S. as of September 26, 2020 and March 28, 2020. The following tables show the fair values and gross unrealized losses of the Company’s investments, aggregated by investment category, for individual securities that have been in a continuous unrealized loss position for the length of time specified, as of September 26, 2020 and March 28, 2020: September 26, 2020 Less Than 12 Months 12 Months or Greater Total (In thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Non-financial institution securities $ 19,993 $ — $ — $ — $ 19,993 $ — U.S. government and agency securities 149,947 (4) — — 149,947 (4) Foreign government and agency securities 24,997 (1) — — 24,997 (1) Mortgage-backed securities 9,134 (76) 12,474 (181) 21,608 (257) Commercial mortgage- backed securities 3,665 (59) 684 (133) 4,349 (192) $ 207,736 $ (140) $ 13,158 $ (314) $ 220,894 $ (454) March 28, 2020 Less Than 12 Months 12 Months or Greater Total (In thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Mortgage-backed securities $ 13,492 $ (88) $ 31,819 $ (389) $ 45,311 $ (477) Asset-backed securities 1,641 (2) — — 1,641 (2) Foreign government and agency securities 30,998 (17) — — 30,998 (17) Commercial mortgage- backed securities 30,593 (282) 2,589 (274) 33,182 (556) $ 76,724 $ (389) $ 34,408 $ (663) $ 111,132 $ (1,052) The Company reviewed the investment portfolio and determined that the gross unrealized losses on these investments as of September 26, 2020 and March 28, 2020 were temporary in nature as evidenced by the fluctuations in the gross unrealized losses within the investment categories. The marketable debt securities (non-financial institution securities, U.S. and foreign government and agency securities, asset-backed securities, mortgage-backed securities and commercial mortgage-backed securities) are highly rated by the credit rating agencies, there have been no defaults on any of these securities and the Company has received interest payments as they become due. Therefore, the Company believes that it will be able to collect both principal and interest amount due to the Company. Additionally, in the past several years a portion of the Company's investment in the mortgage-backed securities was redeemed or prepaid by the debtors at par. Furthermore, the aggregate of individual unrealized losses that had been outstanding for twelve months or more was not significant as of September 26, 2020 and March 28, 2020. The Company neither intends to sell these investments nor concludes that it is more-likely-than-not that it will have to sell them until recovery of their carrying values. The amortized cost and estimated fair value of marketable debt securities, by contractual maturity, are shown in the table below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations without call or prepayment penalties. September 26, 2020 (In thousands) Amortized Estimated Due in one year or less $ 2,454,654 $ 2,454,704 Due after one year through five years 2,752 2,792 Due after five years through ten years 15,182 15,872 Due after ten years 98,205 99,190 $ 2,570,793 $ 2,572,558 As of September 26, 2020, $117.9 million of marketable debt securities with contractual maturities of greater than one year were classified as short-term investments. Additionally, the above table does not include investments in money market funds because these investments do not have specific contractual maturities. Certain information related to available-for-sale securities is as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Proceeds from sale of available-for-sale securities $ 18,798 $ 143,529 $ 56,455 $ 299,623 Gross realized gains on sale of available-for-sale securities $ 53 $ 607 $ 413 $ 1,212 Gross realized losses on sale of available-for-sale securities (224) (133) (224) (172) Net realized gains (losses) on sale of available-for-sale securities $ (171) $ 474 $ 189 $ 1,040 Amortization of premiums (discounts) on available-for-sale securities $ (25) $ 1,636 $ (117) $ 2,347 The cost of securities matured or sold is based on the specific identification method.

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
	Sep. 26, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments The Company’s primary objective for holding derivative financial instruments is to manage foreign currency exchange rate risk and interest rate risk. As a result of the use of derivative financial instruments, the Company is exposed to the risk that counterparties to derivative contracts may fail to meet their contractual obligations. The Company manages counterparty credit risk in derivative contracts by reviewing counterparty creditworthiness on a regular basis, establishing collateral requirement and limiting exposure to any single counterparty. The right of set-off that exists with certain transactions enables the Company to net amounts due to and from the counterparty, reducing the maximum loss from credit risk in the event of counterparty default. In March and May 2020, the Company entered into interest rate swap contracts with an independent financial institution in an effort to reduce the risk of changes in the underlying benchmark interest rate. During the first quarter of fiscal 2021, the Company unwound the interest rate swap contracts and recognized an immaterial loss. The loss is being amortized as an additional increase to interest expense over the remaining life of the 2030 Notes. There was no ineffectiveness during all periods presented.

Stock-Based Compensation Plans

Stock-Based Compensation Plans	6 Months Ended
	Sep. 26, 2020
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation Plans	Stock-Based Compensation Plans The Company’s equity incentive plans are broad-based, long-term retention programs that cover employees, consultants and non-employee directors of the Company. These plans are intended to attract and retain talented employees, consultants and non-employee directors and to provide such persons with a proprietary interest in the Company. Stock-Based Compensation The following table summarizes stock-based compensation expense related to stock awards granted under the Company’s equity incentive plans and rights to acquire stock granted under the Company’s Employee Stock Purchase Plan (ESPP): Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Stock-based compensation included in: Cost of revenues $ 2,963 $ 2,812 $ 5,684 $ 5,425 Research and development 36,110 29,702 66,479 54,576 Selling, general and administrative 19,366 17,308 36,659 32,574 $ 58,439 $ 49,822 $ 108,822 $ 92,575 Employee Stock Option Plans The types of awards allowed under the 2007 Equity Incentive Plan (2007 Equity Plan) include incentive stock options, non-qualified stock options, restricted stock units (RSUs), restricted stock and stock appreciation rights. As of September 26, 2020, 12.6 million shares remained available for grant under the 2007 Equity Plan. RSU Awards A summary of the Company’s RSU activity and related information is as follows: RSUs Outstanding (Shares in thousands) Number of Shares Weighted-Average Grant-Date Fair Value Per Share March 30, 2019 7,331 $ 59.54 Granted 2,756 $ 109.53 Vested (2,820) $ 55.24 Cancelled (487) $ 75.09 March 28, 2020 6,780 $ 80.53 Granted 2,968 $ 95.11 Vested (2,234) $ 70.90 Cancelled (488) $ 82.66 September 26, 2020 7,026 $ 89.19 The estimated fair values of RSUs were calculated based on the market price of Xilinx common stock on the date of grant, reduced by the present value of dividends expected to be paid on Xilinx common stock prior to vesting. The per share weighted-average fair value of RSUs granted during the second quarter of fiscal 2021 was $95.59 ($113.02 for the second quarter of fiscal 2020), which were calculated based on estimates at the date of grant using the following weighted-average assumptions: Three Months Ended Six Months Ended September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Risk-free interest rate 0.3 % 1.8 % 0.3 % 1.8 % Dividend yield 1.5 % 1.3 % 1.5 % 1.3 % For the majority of RSUs granted, the number of shares of common stock issued on the date the RSU awards vest is net of the minimum statutory withholding requirements that the Company pays in cash to the appropriate taxing authorities on behalf of the Company's employees. During the first six months of fiscal 2021 and 2020, the Company withheld $53.4 million and $71.8 million worth of RSU awards, respectively, to satisfy the employees’ tax obligations. During the second quarter and the first six months of fiscal 2021, the Company realized excess tax benefits of $12.4 million and $12.7 million, respectively, primarily from RSU vesting. During the second quarter and the first six months of fiscal 2020, the excess tax benefits were $32.2 million and $34.3 million, respectively, primarily from RSU vesting. These tax benefits were recorded in the condensed consolidated statements of income as a component of the provision (benefit) for income taxes. Employee Stock Purchase Plan Under the Company’s ESPP, shares are only issued during the second and fourth quarters of each fiscal year. Employees purchased 283 thousand shares for $19.8 million during the second quarter of fiscal 2021 and 241 thousand shares for $19.7 million during the second quarter of fiscal 2020. The per-share weighted-average fair value of stock purchase rights granted under the ESPP during the second quarter of fiscal 2021 and 2020 was $31.40 and $33.79, respectively. The fair values of stock purchase plan rights granted in the second quarter of fiscal 2021 and 2020 were estimated using the Black-Scholes option pricing model at the date of grant using the following assumptions: 2021 2020 Expected life of options (years) 1.25 1.25 Expected stock price volatility 0.38 0.37 Risk-free interest rate 0.1 % 1.9 % Dividend yield 1.4 % 1.3 %

Net Income Per Common Share

Net Income Per Common Share	6 Months Ended
	Sep. 26, 2020
Earnings Per Share [Abstract]
Net Income Per Common Share	Net Income Per Common Share The computation of basic net income per common share for all periods presented is derived from information on the condensed consolidated statements of income, and there are no reconciling items in the numerator used to compute the diluted net income per common share. The following table summarizes the computation of basic and diluted net income per common share: Three Months Ended Six Months Ended (In thousands, except per share amounts) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Net income available to common stockholders $ 193,816 $ 226,993 $ 287,652 $ 468,452 Weighted average common shares outstanding-basic 244,837 252,399 243,602 252,728 Dilutive effect of employee equity incentive plans 1,926 2,870 2,245 3,781 Weighted average common shares outstanding-diluted 246,763 255,269 245,847 256,509 Basic net income per common share $ 0.79 $ 0.90 $ 1.18 $ 1.85 Diluted net income per common share $ 0.79 $ 0.89 $ 1.17 $ 1.83 The total shares used in the denominator of the diluted net income per common share calculation include potentially dilutive common equivalent shares outstanding that are not included in basic net income per common share calculation. The diluted shares were calculated by applying the treasury stock method to the impact of the equity incentive plans. Certain shares of outstanding stock options and RSUs were excluded from diluted net income per common share calculation by applying the treasury stock method, as their inclusion would have been anti-dilutive. These excluded options and RSUs were immaterial for the second quarter and the first six months of fiscal 2021 and 2020, respectively, but could be dilutive in the future if the Company’s average share price increases and is greater than the combined exercise prices and the unamortized fair values of these options and RSUs.

Inventories

Inventories	6 Months Ended
	Sep. 26, 2020
Inventory Disclosure [Abstract]
Inventory Disclosure [Text Block]	Inventories Inventories are stated at the lower of actual cost (determined using the first-in, first-out method), or market (estimated net realizable value) and are comprised of the following: (In thousands) September 26, 2020 March 28, 2020 Raw materials $ 28,237 $ 35,562 Work-in-process 179,529 204,501 Finished goods 74,282 64,277 $ 282,048 $ 304,340

Debt and Credit Facility

Debt and Credit Facility	6 Months Ended
	Sep. 26, 2020
Debt Disclosure [Abstract]
Debt and Credit Facility	Debt and Credit Facility 2021 Notes On March 12, 2014, the Company issued the 2021 Notes at a discounted price of 99.281% of par. Interest on the 2021 Notes is payable semi-annually on March 15 and September 15. The effective interest rate of the 2021 Notes is 3.115%. The coupon interest rate of the 2021 Notes is 3.000%. The Company received net proceeds of $495.4 million from issuance of the 2021 Notes, after the debt discount and deduction of debt issuance costs. The debt discounts and issuance costs are amortized to interest expense over the terms of the 2021 Notes. As of September 26, 2020, the remaining term of the 2021 Notes is 0.5 years. The following table summarizes the carrying value of the 2021 Notes as of September 26, 2020 and March 28, 2020: (In thousands) September 26, 2020 March 28, 2020 Principal amount of the 2021 Notes $ 500,000 $ 500,000 Unamortized discount of the 2021 Notes (236) (517) Unamortized debt issuance costs associated with 2021 Notes (102) (223) Carrying value of the 2021 Notes $ 499,662 $ 499,260 Interest expense related to the 2021 Notes was included in interest and other income (expense), net on the condensed consolidated statements of income as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Contractual coupon interest $ 3,750 $ 3,750 $ 7,500 $ 7,500 Amortization of debt issuance costs 61 61 121 122 Amortization of debt discount, net 140 136 281 271 Total interest expense related to the 2021 Notes $ 3,951 $ 3,947 $ 7,902 $ 7,893 2024 Notes On May 30, 2017, the Company issued the 2024 Notes at a discounted price of 99.887% of par. Interest on the 2024 Notes is payable semi-annually on June 1 and December 1. The effective interest rate of the 2024 Notes is 2.968%. The coupon interest rate of the 2024 Notes is 2.950%. The Company received $745.2 million from the issuance of the 2024 Notes, after the debt discount and deduction of debt issuance costs. The debt discounts and issuance costs are amortized to interest expense over the term of the 2024 Notes. As of September 26, 2020, the remaining term of the 2024 Notes is approximately 3.7 years. The following table summarizes the carrying value of the 2024 Notes as of September 26, 2020 and March 28, 2020: (In thousands) September 26, 2020 March 28, 2020 Principal amount of the 2024 Notes $ 750,000 $ 750,000 Unamortized discount of the 2024 Notes (466) (525) Unamortized debt issuance costs associated with 2024 Notes (2,081) (2,365) Carrying Value of the 2024 Notes $ 747,453 $ 747,110 Interest expense related to the 2024 Notes was included in interest and other income (expense), net on the condensed consolidated statements of income as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Contractual coupon interest $ 5,444 $ 5,444 $ 10,887 $ 11,986 Amortization of debt issuance costs 142 142 284 284 Amortization of debt discount, net 30 29 59 58 Total interest expense related to the 2024 Notes $ 5,616 $ 5,615 $ 11,230 $ 12,328 2030 Notes On May 19, 2020, the Company issued the 2030 Notes at a discounted price of 99.973% of par. Interest on the 2030 Notes is payable semi-annually on June 1 and December 1. The effective interest rate of the 2030 Notes is 2.378%. The coupon interest rate of the 2030 Notes is 2.375%. The Company received $744.4 million from the issuance of the 2030 Notes, after the debt discount and deduction of debt issuance costs. The debt discounts and issuance costs are amortized to interest expense over the term of the 2030 Notes. As of September 26, 2020, the remaining term of the 2030 Notes is approximately 9.7 years. The following table summarizes the carrying value of the 2030 Notes as of September 26, 2020: (In thousands) September 26, 2020 Principal amount of the 2030 Notes $ 750,000 Unamortized discount of the 2030 Notes (196) Unamortized debt issuance costs associated with 2030 Notes (5,191) Carrying Value of the 2030 Notes $ 744,613 Interest expense related to the 2030 Notes was included in interest and other income (expense), net on the condensed consolidated statements of income as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Contractual coupon interest $ 4,521 $ — $ 6,565 $ — Amortization of debt issuance costs 134 — 179 — Amortization of debt discount, net 4 — 7 — Total interest expense related to the 2030 Notes $ 4,659 $ — $ 6,751 $ — Revolving Credit Facility On December 7, 2016, the Company entered into a $400.0 million senior unsecured revolving credit facility that, upon certain conditions, may be extended by an additional $150.0 million, with a syndicate of banks (expiring in December 2021). Borrowings under the credit facility will bear interest at a benchmark rate plus an applicable margin based upon the Company’s credit rating. In connection with the credit facility, the Company is required to maintain certain financial and nonfinancial covenants. As of September 26, 2020, the Company had made no borrowings under this credit facility and was not in violation of any of the covenants.

Common Stock Repurchase Program

Common Stock Repurchase Program	6 Months Ended
	Sep. 26, 2020
Stockholders' Equity Note [Abstract]
Common Stock and Debentures Repurchase Program	Common Stock Repurchase Program The Board of Directors (Board) has approved stock repurchase programs enabling the Company to repurchase its common stock and debentures in the open market or through negotiated transactions with independent financial institutions. On October 22, 2019, the Board authorized another program (2019 Repurchase Program) to repurchase the Company's common stock and debentures up to $1.00 billion. The 2019 Repurchase Program has no stated expiration date. Through September 26, 2020, the Company has used $716.3 million of the $1.00 billion authorized under the 2019 Repurchase Program, leaving $283.7 million available for future repurchases. The Company’s current policy is to retire all repurchased shares, and consequently, no treasury shares were held as of September 26, 2020 and March 28, 2020. During the first six months of fiscal 2021, the Company repurchased 0.7 million shares of common stock in the open market for a total of $53.7 million.

Interest and Other Expense, Net

Interest and Other Expense, Net	6 Months Ended
	Sep. 26, 2020
Other Income and Expenses [Abstract]
Interest and Other Expense, Net	Interest and Other Income (Expense), Net The components of interest and other income (expense), net are as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Interest income $ 1,969 $ 13,813 $ 6,923 $ 31,801 Interest expense (14,226) (9,562) (25,883) (20,693) Other income (expense), net 1,486 8,078 (3,964) 12,833 Total interest and other income (expense), net $ (10,771) $ 12,329 $ (22,924) $ 23,941

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	6 Months Ended
	Sep. 26, 2020
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive LossComprehensive income (loss) is defined as the change in equity of a company during a period from transactions and other events and circumstances from non-owner sources. The components of the Company's accumulated other comprehensive loss are as follows: (In thousands) September 26, 2020 March 28, 2020 Accumulated unrealized gains on available-for-sale securities, net of tax $ 1,441 $ 1,319 Accumulated unrealized losses on hedging transactions, net of tax (271) (10,170) Accumulated cumulative translation adjustment, net of tax (9,458) (11,426) Total accumulated other comprehensive loss $ (8,288) $ (20,277) The related tax effects of other comprehensive income (loss) were not material for all periods presented.

Income Taxes

Income Taxes	6 Months Ended
	Sep. 26, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company recorded a tax provision of $0.8 million and $70.4 million for the second quarter and the first six months of fiscal 2021, respectively, representing effective tax rates of 0.4% and 19.7%, respectively. The Company recorded a tax benefit of $(11.1) million and a tax provision of $9.9 million for the second quarter and the first six months of fiscal 2020, respectively, representing effective tax rates of (5.2)% and 2.1%, respectively. The difference between the U.S. federal statutory tax rate of 21% and the Company's effective tax rate in the second quarter of fiscal 2021 was primarily due to the beneficial impact of income earned in lower tax rate jurisdictions and excess tax benefits with respect to stock-based compensation, which was partially offset by the U.S. tax on global intangible low-taxed income (GILTI). The difference between the U.S. federal statutory tax rate of 21% and the Company's effective tax rate in the first six months of fiscal 2021 was primarily due to the beneficial impact of income earned in lower tax rate jurisdictions and excess tax benefits with respect to stock-based compensation, which was partially offset by tax on GILTI and the recognition of prior and current year detrimental impacts of including stock-based compensation in the intercompany research and development (R&D) cost sharing arrangement. The difference between the U.S. federal statutory tax rate of 21% and the Company's effective tax rate in the second quarter and the first six months of fiscal 2020 was primarily due to the beneficial impact of income earned in lower tax rate jurisdictions and excess tax benefits with respect to stock-based compensation, which was partially offset by tax on GILTI. On June 22, 2020, the United States Supreme Court denied certiorari in the case of Altera Corp. v. Commissioner (“Altera”). The company is not a party to the proceedings but is subject to the findings of the case. The Altera tax case concerns related party R&D cost sharing arrangements and whether stock-based compensation should be included in the pool of costs to be shared. With the Supreme Court’s decision not to hear the Altera case, the decision of the 9th Circuit (which applies to taxpayers such as Xilinx) that stock-based compensation is to be included in the pool of costs to be shared remains in place. During the fiscal quarter ended June 27, 2020, the Company recorded a one-time charge of $56.8 million for prior year taxes and interest representing the cumulative adverse impact for fiscal 2017 through fiscal 2020. Despite the decision in the Altera case, the Company has concluded the related law remains unsettled and will continue to monitor developments and the potential effect on its consolidated financial statements and tax filings. The Company’s total gross unrecognized tax benefits as of September 26, 2020, determined in accordance with authoritative guidance for measuring uncertain tax positions, increased by $7.0 million in the second quarter of fiscal 2021 to $155.0 million. The total amount of unrecognized tax benefits that, if realized in a future period, would favorably affect the effective tax rate was $111.9 million as of September 26, 2020. It is reasonably possible that changes to the Company's unrecognized tax benefits could be significant in the next twelve months due to tax audit settlements and lapses of statutes of limitation. As a result of uncertainties regarding tax audit settlements and their possible outcomes, an estimate of the range of increase or decrease that could occur in the next twelve months cannot be made. The Company’s policy is to include interest and penalties related to income tax liabilities within the provision for income taxes on the condensed consolidated statements of income. The balance of accrued interest and penalties recorded in the condensed consolidated balance sheets was $4.1 million as of September 26, 2020 and not material for the prior period presented. The amounts of interest and penalties included in the Company's provision for income taxes were not material for all periods presented. The statutes of limitations have closed for U.S. federal income tax purposes for years through fiscal 2016, for significant U.S. state income tax purposes for years through fiscal 2014, and for Ireland income tax purposes for years through fiscal 2015.

Leases and Commitments

Leases and Commitments	6 Months Ended
	Sep. 26, 2020
Commitments and Contingencies Disclosure [Abstract]
Leases and Commitments	Leases and Commitments Xilinx leases some of its facilities and office buildings under non-cancelable operating leases that expire at various dates through August 2029. Additionally, Xilinx entered into a land lease in conjunction with the Company’s building in Singapore, which will expire in November 2035 and the lease cost was settled in an up-front payment in June 2006. Some of the operating leases for facilities and office buildings require payment of operating costs, including property taxes, repairs, maintenance and insurance. Most of the Company’s leases contain renewal options for varying terms. T hese renewal terms can extend the lease term from 1 to 15 years and are included in the lease term when it is reasonably certain that the Company will exercise the option. The following table presents the maturities of lease liabilities as of September 26, 2020: Fiscal (In thousands) 2021 (remaining six months) $ 6,778 2022 11,776 2023 7,615 2024 6,533 2025 6,280 Thereafter 28,877 Total lease payments $ 67,859 Less: Imputed interest (14,363) Total lease liabilities $ 53,496 The Company's leases were included as a component of the following condensed consolidated balance sheet lines: (In thousands) September 26, 2020 March 28, 2020 Other assets $ 51,009 $ 57,819 Other accrued liabilities 10,545 11,109 Other long-term liabilities 42,951 48,964 The components of lease costs were as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Operating lease cost $ 3,558 $ 4,334 $ 7,258 $ 8,606 Lease income (1,050) (671) (1,972) (1,467) Total lease cost $ 2,508 $ 3,663 $ 5,286 $ 7,139 Other information related to leases were as follows: Six Months Ended ($ in thousands) September 26, 2020 September 28, 2019 Cash paid for operating leases included in operating cash flows $ 6,808 $ 6,079 September 26, 2020 Weighted-average remaining lease term - operating leases (in years) 7.1 Weighted-average remaining discount rate - operating leases 5.7 % three

Product Warranty and Indemnific

Product Warranty and Indemnification	6 Months Ended
	Sep. 26, 2020
Product Warranties Disclosures [Abstract]
Product Warranty Disclosure [Text Block]	Product Warranty and Indemnification The Company generally sells products with a limited warranty for product quality. The Company provides an accrual for known product issues if a loss is probable and can be reasonably estimated. As of the end of the second quarter of fiscal 2021 and the end of fiscal 2020, the accrual balances of the product warranty liability were immaterial. The Company offers, subject to certain terms and conditions, to indemnify customers and distributors for costs and damages awarded against these parties in the event the Company’s hardware products are found to infringe third-party intellectual property rights, including patents, copyrights or trademarks, and to compensate certain customers for limited specified costs they actually incur in the event the Company's hardware products experience epidemic failure. To a lesser extent, the Company may from time-to-time offer limited indemnification with respect to its software products. The terms and conditions of these indemnity obligations are limited by contract, which obligations are typically perpetual from the effective date of the agreement. The Company has historically received only a limited number of requests for indemnification under these provisions and has not made any significant payments pursuant to these provisions. The Company cannot estimate the maximum amount of potential future payments, if any, that the Company may be required to make as a result of these obligations due to the limited history of indemnification claims and the unique facts and circumstances that are likely to be involved in each particular claim and indemnification provision. However, there can be no assurances that the Company will not incur any financial liabilities in the future as a result of these obligations.

Contingencies

Contingencies	6 Months Ended
	Sep. 26, 2020
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Patent Litigation On October 18, 2019, a patent infringement lawsuit was filed by Arbor Global Strategies LLC (Arbor) against the Company in the U.S. District Court in Delaware (Arbor Global Strategies LLC, v. Xilinx, Inc., Case No. 1:19-cv-01986). The lawsuit pertains to four patents and Arbor seeks unspecified damages, interest, attorneys’ fees, and costs. The Company filed a motion to dismiss the case on December 19, 2019 that was denied on August 12, 2020. Discovery in the case is now open, but Arbor has not yet served its infringement contentions. A trial has been set to begin on May 23, 2022. On September 4, 2020, the Company filed four inter partes review (IPR) petitions directed at each of the four Arbor patents. The Company is unable to estimate its range of possible loss, if any, in this matter at this time. On December 5, 2019, Analog Devices, Inc. (ADI) filed a patent infringement lawsuit against the Company in the United States District Court for the District of Delaware (Analog Devices, Inc. v. Xilinx, Inc., Case No. 1-19-cv-02225). The lawsuit pertains to eight patents and ADI seeks unspecified damages, interest, attorneys’ fees, costs, and a permanent injunction. The Company filed its answer and counterclaims alleging infringement by ADI of eight patents on January 21, 2020. The Company filed amended counterclaims on April 3, 2020. The Company filed a motion to strike ADI's affirmative defense of inequitable conduct on May 8, 2020. This motion is still pending. The parties exchanged infringement contentions on August 17, 2020, and invalidity contentions on September 15, 2020. Between July 17 and September 1, 2020, the Company filed eight IPR petitions challenging the patentability of six ADI asserted patents. Between August 31 and September 15, 2020, ADI filed eight IPR petitions challenging eight Xilinx asserted patents. The parties’ claims are set for back-to-back trials beginning March 14, 2022 for ADI’s claims and March 28, 2022 for the Company’s claims. The Company is unable to estimate its range of possible loss, if any, in this matter at this time. On April 30, 2020, a patent infringement lawsuit was filed by FG SRC LLC (SRC) against the Company in the U.S. District Court in Delaware (FG SRC LLC v. Xilinx, Inc., Case No. 1:20-cv-00601). The lawsuit pertains to two patents and SRC seeks unspecified damages, interest, and an on-going royalty. The Company filed its answer to the complaint on June 29, 2020. On July 20, 2020, SRC filed an amended complaint. On August 3, 2020, the Company filed a motion to dismiss the amended complaint. On August 6, 2020 the Company filed a motion to stay this case in Delaware bankruptcy court in view of the pending bankruptcy of the prior owner of the patents. This motion to stay was denied on September 23, 2020. No schedule has been set in the case. The Company is unable to estimate its range of possible loss, if any, in this matter at this time. On September 16, 2020, five patent infringement lawsuits (Case Nos. 1:20-cv-01228, 1:20-cv-01229, 1:20-cv-01231, 1:20-cv-01232 1:20-cv-01233) were filed by WSOU Investments, LLC, d/b/a Brazos Licensing and Development (WSOU Investments) in the U.S. District Court in Delaware. Each lawsuit pertains to a single patent and WSOU Investments seeks unspecified damages, interest, attorneys’ fees, and costs. No schedule has been set in any of the cases. The Company is unable to estimate its range of possible loss, if any, in this matter at this time. The Company will file timely responses to the complaints that are due on November 9, 2020. The Company intends to continue to protect and defend its IP vigorously. Other Matters On June 11, 2015, John P. Neblett, as Chapter 7 Trustee of Valley Forge Composite Technologies, Inc., filed a complaint against Xilinx and others in the U.S. Bankruptcy Court for the Middle District of Pennsylvania (Bankruptcy No. 1:13-bk-05253-JJT). The complaint alleges causes of actions against Xilinx for negligence and civil conspiracy relating to alleged violations of U.S. export laws. It seeks at least $50.0 million in damages, together with punitive damages, from the defendants. On September 21, 2015, the action was withdrawn from the U.S. Bankruptcy Court for the Middle District of Pennsylvania and transferred to the U.S. District Court for the Eastern District of Kentucky. On November 2, 2015, Xilinx, along with other defendants, filed a motion to dismiss the complaint. On November 3, 2015, Xilinx filed a motion for sanctions pursuant to Federal Rule of Civil Procedure 11. On June 27, 2016, the Court denied both motions. On September 11, 2017, Xilinx, along with other defendants, filed motions for summary judgment seeking to dispose of all claims against them. On July 3, 2018, the Court granted both of Xilinx’s motions for summary judgment, disposing of all claims asserted against Xilinx. On August 1, 2018, the Trustee filed a notice of appeal. On August 9, 2018, the Court of Appeals for the Sixth Circuit issued an order to show cause requesting that the appellant address a possible jurisdictional defect. On August 29, 2018, the appellant responded to the order to show cause. On September 10, 2018, appellees, including Xilinx, filed a joint reply. On January 7, 2019, the Court of Appeals issued an order dismissing the appeal for lack of jurisdiction. On February 19, 2019, the District Court issued an order permitting any party seeking to certify the case for appeal to file a motion. On March 11, 2019, defendant Avnet filed a motion to certify the case for appeal. On May 14, 2019 the Court denied Avnet’s motion. On June 4, 2019, Avnet and the counterclaim and crossclaim defendants stipulated to dismissal of Avnet’s remaining counterclaims and crossclaims. The Court entered final judgment on June 25, 2019. On July 22, 2019, the Trustee filed his notice of appeal and filed his opening appellate brief on September 17, 2019. On October 30, 2019, Xilinx filed its appellee brief. On November 20, 2019, the Trustee filed his reply brief. On April 7, 2020, the Sixth Circuit affirmed the District Court’s judgment which granted both of Xilinx’s motions for summary judgment, disposing of all claims asserted against Xilinx. On April 14, 2020, the Trustee filed a motion to extend the time for filing a petition for rehearing, and the Sixth Circuit granted the motion extending the due date until May 14, 2020. On May 14, 2020, the Trustee filed a petition for a rehearing. On August 11, 2020, the petition for a rehearing was denied. From time to time, the Company is involved in various disputes and litigation matters that arise in the ordinary course of its business. These include disputes and lawsuits related to intellectual property, mergers and acquisitions, licensing, contract law, tax, regulatory, distribution arrangements, employee relations and other matters. Periodically, the Company reviews the status of each matter and assesses its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and a range of possible losses can be estimated, the Company accrues a liability for the estimated loss. Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict. Because of such uncertainties, accruals are based only on the best information available at the time. As additional information becomes available, the Company continues to reassess the potential liability related to pending claims and litigation and may revise estimates.

Goodwill and Acquisition-Relate

Goodwill and Acquisition-Related Intangibles	6 Months Ended
	Sep. 26, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Acquisition-Related Intangibles	A summary of the goodwill and acquisitions-related intangibles balances as of September 26, 2020 and March 28, 2020 was as follows: Weighted-Average (In thousands) September 26, 2020 March 28, 2020 Amortization Life Goodwill $ 619,413 $ 619,196 Core technology, gross 209,131 209,131 Less accumulated amortization (118,400) (105,007) Core technology, net 90,731 104,124 3.6 years Other intangibles, gross 95,759 95,759 Less accumulated amortization (62,255) (56,531) Other intangibles, net 33,504 39,228 3.7 years In-process research and development 56,992 56,992 Total acquisition-related intangibles, gross 361,882 361,882 Less accumulated amortization (180,655) (161,538) Total acquisition-related intangibles, net $ 181,227 $ 200,344 Based on the carrying value of acquisition-related intangibles recorded as of September 26, 2020, and assuming no subsequent acquisition or impairment of the underlying assets, the annual amortization expense for acquisition-related intangibles is expected to be as follows: Fiscal (In thousands) 2021 (remaining six months) $ 19,095 2022 35,401 2023 33,693 2024 29,443 2025 6,603 Total $ 124,235

Segment Information

Segment Information	6 Months Ended
	Sep. 26, 2020
Segment Reporting [Abstract]
Segment Information	Segment Information Xilinx designs, develops and markets programmable logic semiconductor devices and the related software design tools. The Company operates and tracks its results in one operating segment. Xilinx sells its products to OEMs and to electronic components distributors who resell these products to OEMs or subcontract manufacturers. Net revenues by geography for the periods indicated were as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 North America $ 223,781 $ 233,576 $ 410,075 $ 432,407 Asia Pacific 365,898 422,891 758,930 854,072 Europe 136,109 123,845 228,860 277,133 Japan 40,747 53,054 95,343 119,386 Total net revenues $ 766,535 $ 833,366 $ 1,493,208 $ 1,682,998 Geographic revenue information for the second quarter and the first six months of fiscal 2021 and 2020 reflects the geographic location of the distributors or OEMs who purchased the Company's products. This may differ from the geographic location of the end customers. The Company's end market revenue data is derived from the understanding of end customers’ primary markets, which is based on reports provided by distributors and the Company's internal records. The Company classifies end markets into businesses with similar market drivers: Aerospace & Defense, Industrial and Test, Measurement & Emulation (AIT); Automotive, Broadcast & Consumer; Wired & Wireless; and Data Center. Additionally, revenue recognized from shipments to distributors but not yet subsequently sold to the end markets is classified as Channel Revenue. The Channel Revenue represents the difference between the shipments to distributors and what the distributors subsequently sold to the end customers within the same period. Channel Revenues for the second quarter and the first six months of fiscal 2021 and 2020 were less than 1%. Three Months Ended Six Months Ended (% of total net revenues) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 AIT 44 % 36 % 44 % 38 % Automotive, Broadcast and Consumer 16 16 14 15 Wired and Wireless 26 38 29 40 Data Center 14 10 13 7 Total net revenues 100 % 100 % 100 % 100 %

Subsequent Events

Subsequent Events	6 Months Ended
	Sep. 26, 2020
Subsequent Events [Abstract]
Subsequent Events [Text Block]	On October 17, 2020, the Board declared a cash dividend of $0.38 per common share for the second quarter of fiscal 2021. The dividend is payable on December 2, 2020 to stockholders of record on November 11, 2020.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Sep. 26, 2020
Fair Value Disclosures [Abstract]
Assets and liabilities measured at fair value on a recurring basis	The following tables present information about the Company’s assets and liabilities measured at fair value on a recurring basis as of September 26, 2020 and March 28, 2020: September 26, 2020 (In thousands) Total Fair Assets Cash equivalents: Money market funds $ 385,263 $ — $ — $ 385,263 Financial institution securities — 80,834 — 80,834 Non-financial institution securities — 269,884 — 269,884 U.S. government and agency securities 64,992 122,989 — 187,981 Foreign government and agency securities — 110,237 — 110,237 Short-term investments: Financial institution securities — 325,000 — 325,000 Non-financial institution securities — 402,103 — 402,103 U.S. government and agency securities 474,867 112,593 — 587,460 Foreign government and agency securities — 489,624 — 489,624 Mortgage-backed securities — 99,260 — 99,260 Asset-backed securities — 875 — 875 Commercial mortgage-backed securities — 19,300 — 19,300 Marketable equity securities 1,538 — — 1,538 Derivative financial instruments, net — 2,416 — 2,416 Total assets measured at fair value $ 926,660 $ 2,035,115 $ — $ 2,961,775 March 28, 2020 (In thousands) Total Fair Assets Cash equivalents: Money market funds $ 656,038 $ — $ — $ 656,038 Financial institution securities — 175,000 — 175,000 Non-financial institution securities — 361,692 — 361,692 U.S. government and agency securities 150,999 62,274 — 213,273 Foreign government and agency securities — 244,300 — 244,300 Short-term investments: Financial institution securities — 150,000 — 150,000 Non-financial institution securities — 115,043 — 115,043 U.S. government and agency securities 1,000 2,000 — 3,000 Foreign government and agency securities — 9,973 — 9,973 Mortgage-backed securities — 158,804 — 158,804 Asset-backed securities — 2,549 — 2,549 Commercial mortgage-backed securities — 50,144 — 50,144 Total assets measured at fair value $ 808,037 $ 1,331,779 $ — $ 2,139,816 Liabilities Derivative financial instruments, net $ — $ 12,381 $ — $ 12,381 Total liabilities measured at fair value $ — $ 12,381 $ — $ 12,381 Net assets measured at fair value $ 808,037 $ 1,319,398 $ — $ 2,127,435

Financial Instruments (Tables)

Financial Instruments (Tables)	6 Months Ended
	Sep. 26, 2020
Investments, All Other Investments [Abstract]
Available-for-sale securities	The following is a summary of cash equivalents and available-for-sale securities as of the end of the periods presented: September 26, 2020 March 28, 2020 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Money market funds $ 385,263 $ — $ — $ 385,263 $ 656,038 $ — $ — $ 656,038 Financial institution securities 405,834 — — 405,834 325,000 — — 325,000 Non-financial institution securities 671,987 — — 671,987 476,735 — — 476,735 U.S. government and agency securities 775,394 51 (4) 775,441 216,178 95 — 216,273 Foreign government and agency securities 599,862 — (1) 599,861 254,283 7 (17) 254,273 Mortgage-backed securities 97,500 2,017 (257) 99,260 156,836 2,445 (477) 158,804 Asset-backed securities 857 18 — 875 2,533 18 (2) 2,549 Commercial mortgage- backed securities 19,359 133 (192) 19,300 50,566 134 (556) 50,144 $ 2,956,056 $ 2,219 $ (454) $ 2,957,821 $ 2,138,169 $ 2,699 $ (1,052) $ 2,139,816
Fair values and gross unrealized losses of the investments	The following tables show the fair values and gross unrealized losses of the Company’s investments, aggregated by investment category, for individual securities that have been in a continuous unrealized loss position for the length of time specified, as of September 26, 2020 and March 28, 2020: September 26, 2020 Less Than 12 Months 12 Months or Greater Total (In thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Non-financial institution securities $ 19,993 $ — $ — $ — $ 19,993 $ — U.S. government and agency securities 149,947 (4) — — 149,947 (4) Foreign government and agency securities 24,997 (1) — — 24,997 (1) Mortgage-backed securities 9,134 (76) 12,474 (181) 21,608 (257) Commercial mortgage- backed securities 3,665 (59) 684 (133) 4,349 (192) $ 207,736 $ (140) $ 13,158 $ (314) $ 220,894 $ (454) March 28, 2020 Less Than 12 Months 12 Months or Greater Total (In thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Mortgage-backed securities $ 13,492 $ (88) $ 31,819 $ (389) $ 45,311 $ (477) Asset-backed securities 1,641 (2) — — 1,641 (2) Foreign government and agency securities 30,998 (17) — — 30,998 (17) Commercial mortgage- backed securities 30,593 (282) 2,589 (274) 33,182 (556) $ 76,724 $ (389) $ 34,408 $ (663) $ 111,132 $ (1,052)
Amortized cost and estimated fair value of marketable debt securities	The amortized cost and estimated fair value of marketable debt securities, by contractual maturity, are shown in the table below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations without call or prepayment penalties. September 26, 2020 (In thousands) Amortized Estimated Due in one year or less $ 2,454,654 $ 2,454,704 Due after one year through five years 2,752 2,792 Due after five years through ten years 15,182 15,872 Due after ten years 98,205 99,190 $ 2,570,793 $ 2,572,558
Information on sale of available-for-sale securities	Certain information related to available-for-sale securities is as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Proceeds from sale of available-for-sale securities $ 18,798 $ 143,529 $ 56,455 $ 299,623 Gross realized gains on sale of available-for-sale securities $ 53 $ 607 $ 413 $ 1,212 Gross realized losses on sale of available-for-sale securities (224) (133) (224) (172) Net realized gains (losses) on sale of available-for-sale securities $ (171) $ 474 $ 189 $ 1,040 Amortization of premiums (discounts) on available-for-sale securities $ (25) $ 1,636 $ (117) $ 2,347

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	6 Months Ended
	Sep. 26, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based compensation expense	The following table summarizes stock-based compensation expense related to stock awards granted under the Company’s equity incentive plans and rights to acquire stock granted under the Company’s Employee Stock Purchase Plan (ESPP): Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Stock-based compensation included in: Cost of revenues $ 2,963 $ 2,812 $ 5,684 $ 5,425 Research and development 36,110 29,702 66,479 54,576 Selling, general and administrative 19,366 17,308 36,659 32,574 $ 58,439 $ 49,822 $ 108,822 $ 92,575
Schedule of Share-based compensation, restricted stock units, valuation assumption [Table Text Block]	The per share weighted-average fair value of RSUs granted during the second quarter of fiscal 2021 was $95.59 ($113.02 for the second quarter of fiscal 2020), which were calculated based on estimates at the date of grant using the following weighted-average assumptions: Three Months Ended Six Months Ended September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Risk-free interest rate 0.3 % 1.8 % 0.3 % 1.8 % Dividend yield 1.5 % 1.3 % 1.5 % 1.3 %
Fair value assumptions of stock purchase plan rights	The fair values of stock purchase plan rights granted in the second quarter of fiscal 2021 and 2020 were estimated using the Black-Scholes option pricing model at the date of grant using the following assumptions: 2021 2020 Expected life of options (years) 1.25 1.25 Expected stock price volatility 0.38 0.37 Risk-free interest rate 0.1 % 1.9 % Dividend yield 1.4 % 1.3 %
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of restricted stock unit activity and related information	A summary of the Company’s RSU activity and related information is as follows: RSUs Outstanding (Shares in thousands) Number of Shares Weighted-Average Grant-Date Fair Value Per Share March 30, 2019 7,331 $ 59.54 Granted 2,756 $ 109.53 Vested (2,820) $ 55.24 Cancelled (487) $ 75.09 March 28, 2020 6,780 $ 80.53 Granted 2,968 $ 95.11 Vested (2,234) $ 70.90 Cancelled (488) $ 82.66 September 26, 2020 7,026 $ 89.19

Net Income Per Common Share Net

Net Income Per Common Share Net Income Per Common Share (Tables)	6 Months Ended
	Sep. 26, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The following table summarizes the computation of basic and diluted net income per common share: Three Months Ended Six Months Ended (In thousands, except per share amounts) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Net income available to common stockholders $ 193,816 $ 226,993 $ 287,652 $ 468,452 Weighted average common shares outstanding-basic 244,837 252,399 243,602 252,728 Dilutive effect of employee equity incentive plans 1,926 2,870 2,245 3,781 Weighted average common shares outstanding-diluted 246,763 255,269 245,847 256,509 Basic net income per common share $ 0.79 $ 0.90 $ 1.18 $ 1.85 Diluted net income per common share $ 0.79 $ 0.89 $ 1.17 $ 1.83

Inventories Inventories (Tables

Inventories Inventories (Tables)	6 Months Ended
	Sep. 26, 2020
Inventory Disclosure [Abstract]
Schedule of Inventory, Current [Table Text Block]	Inventories are stated at the lower of actual cost (determined using the first-in, first-out method), or market (estimated net realizable value) and are comprised of the following: (In thousands) September 26, 2020 March 28, 2020 Raw materials $ 28,237 $ 35,562 Work-in-process 179,529 204,501 Finished goods 74,282 64,277 $ 282,048 $ 304,340

Debt and Credit Facility (Table

Debt and Credit Facility (Tables)	6 Months Ended
	Sep. 26, 2020
Two Point and Nine Five Percent 2024 Senior Debentures [Member]
Schedule of Debt Instruments [Line Items]
Carrying values of liability and equity components of debentures	The following table summarizes the carrying value of the 2024 Notes as of September 26, 2020 and March 28, 2020: (In thousands) September 26, 2020 March 28, 2020 Principal amount of the 2024 Notes $ 750,000 $ 750,000 Unamortized discount of the 2024 Notes (466) (525) Unamortized debt issuance costs associated with 2024 Notes (2,081) (2,365) Carrying Value of the 2024 Notes $ 747,453 $ 747,110
Interest Expense Related to Debentures [Table Text Block]	Interest expense related to the 2024 Notes was included in interest and other income (expense), net on the condensed consolidated statements of income as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Contractual coupon interest $ 5,444 $ 5,444 $ 10,887 $ 11,986 Amortization of debt issuance costs 142 142 284 284 Amortization of debt discount, net 30 29 59 58 Total interest expense related to the 2024 Notes $ 5,616 $ 5,615 $ 11,230 $ 12,328
Two Point and Three Seven Five Percent 2030 Senior Debentures [Member]
Schedule of Debt Instruments [Line Items]
Carrying values of liability and equity components of debentures	The following table summarizes the carrying value of the 2030 Notes as of September 26, 2020: (In thousands) September 26, 2020 Principal amount of the 2030 Notes $ 750,000 Unamortized discount of the 2030 Notes (196) Unamortized debt issuance costs associated with 2030 Notes (5,191) Carrying Value of the 2030 Notes $ 744,613
Interest Expense Related to Debentures [Table Text Block]	Interest expense related to the 2030 Notes was included in interest and other income (expense), net on the condensed consolidated statements of income as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Contractual coupon interest $ 4,521 $ — $ 6,565 $ — Amortization of debt issuance costs 134 — 179 — Amortization of debt discount, net 4 — 7 — Total interest expense related to the 2030 Notes $ 4,659 $ — $ 6,751 $ —
Three Point Zero Percent 2021 Senior Debentures [Member]
Schedule of Debt Instruments [Line Items]
Carrying values of liability and equity components of debentures	The following table summarizes the carrying value of the 2021 Notes as of September 26, 2020 and March 28, 2020: (In thousands) September 26, 2020 March 28, 2020 Principal amount of the 2021 Notes $ 500,000 $ 500,000 Unamortized discount of the 2021 Notes (236) (517) Unamortized debt issuance costs associated with 2021 Notes (102) (223) Carrying value of the 2021 Notes $ 499,662 $ 499,260
Interest Expense Related to Debentures [Table Text Block]	Interest expense related to the 2021 Notes was included in interest and other income (expense), net on the condensed consolidated statements of income as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Contractual coupon interest $ 3,750 $ 3,750 $ 7,500 $ 7,500 Amortization of debt issuance costs 61 61 121 122 Amortization of debt discount, net 140 136 281 271 Total interest expense related to the 2021 Notes $ 3,951 $ 3,947 $ 7,902 $ 7,893

Interest And Other Expense, N_2

Interest And Other Expense, Net (Tables)	6 Months Ended
	Sep. 26, 2020
Other Income and Expenses [Abstract]
Components of interest and other expense, net	The components of interest and other income (expense), net are as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Interest income $ 1,969 $ 13,813 $ 6,923 $ 31,801 Interest expense (14,226) (9,562) (25,883) (20,693) Other income (expense), net 1,486 8,078 (3,964) 12,833 Total interest and other income (expense), net $ (10,771) $ 12,329 $ (22,924) $ 23,941

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Sep. 26, 2020
Equity [Abstract]
Components of accumulated other comprehensive income (loss)	The components of the Company's accumulated other comprehensive loss are as follows: (In thousands) September 26, 2020 March 28, 2020 Accumulated unrealized gains on available-for-sale securities, net of tax $ 1,441 $ 1,319 Accumulated unrealized losses on hedging transactions, net of tax (271) (10,170) Accumulated cumulative translation adjustment, net of tax (9,458) (11,426) Total accumulated other comprehensive loss $ (8,288) $ (20,277)

Leases and Commitments (Tables)

Leases and Commitments (Tables)	6 Months Ended
	Sep. 26, 2020
Commitments and Contingencies Disclosure [Abstract]
Future minimum lease payments under non-cancelable operating leases	T hese renewal terms can extend the lease term from 1 to 15 years and are included in the lease term when it is reasonably certain that the Company will exercise the option. The following table presents the maturities of lease liabilities as of September 26, 2020: Fiscal (In thousands) 2021 (remaining six months) $ 6,778 2022 11,776 2023 7,615 2024 6,533 2025 6,280 Thereafter 28,877 Total lease payments $ 67,859 Less: Imputed interest (14,363) Total lease liabilities $ 53,496
Operating Lease, Assets And Liabilities	The Company's leases were included as a component of the following condensed consolidated balance sheet lines: (In thousands) September 26, 2020 March 28, 2020 Other assets $ 51,009 $ 57,819 Other accrued liabilities 10,545 11,109 Other long-term liabilities 42,951 48,964
Lease, Cost	The components of lease costs were as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 Operating lease cost $ 3,558 $ 4,334 $ 7,258 $ 8,606 Lease income (1,050) (671) (1,972) (1,467) Total lease cost $ 2,508 $ 3,663 $ 5,286 $ 7,139 Other information related to leases were as follows: Six Months Ended ($ in thousands) September 26, 2020 September 28, 2019 Cash paid for operating leases included in operating cash flows $ 6,808 $ 6,079 September 26, 2020 Weighted-average remaining lease term - operating leases (in years) 7.1 Weighted-average remaining discount rate - operating leases 5.7 %

Goodwill and Acquisition-Rela_2

Goodwill and Acquisition-Related Intangibles (Tables)	6 Months Ended
	Sep. 26, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Gross and net amounts of goodwill and of acquisition-related intangibles	A summary of the goodwill and acquisitions-related intangibles balances as of September 26, 2020 and March 28, 2020 was as follows: Weighted-Average (In thousands) September 26, 2020 March 28, 2020 Amortization Life Goodwill $ 619,413 $ 619,196 Core technology, gross 209,131 209,131 Less accumulated amortization (118,400) (105,007) Core technology, net 90,731 104,124 3.6 years Other intangibles, gross 95,759 95,759 Less accumulated amortization (62,255) (56,531) Other intangibles, net 33,504 39,228 3.7 years In-process research and development 56,992 56,992 Total acquisition-related intangibles, gross 361,882 361,882 Less accumulated amortization (180,655) (161,538) Total acquisition-related intangibles, net $ 181,227 $ 200,344
Schedule of expected annual amortization expense for acquisition-related intangibles	Based on the carrying value of acquisition-related intangibles recorded as of September 26, 2020, and assuming no subsequent acquisition or impairment of the underlying assets, the annual amortization expense for acquisition-related intangibles is expected to be as follows: Fiscal (In thousands) 2021 (remaining six months) $ 19,095 2022 35,401 2023 33,693 2024 29,443 2025 6,603 Total $ 124,235

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Sep. 26, 2020
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Net revenues by geography for the periods indicated were as follows: Three Months Ended Six Months Ended (In thousands) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 North America $ 223,781 $ 233,576 $ 410,075 $ 432,407 Asia Pacific 365,898 422,891 758,930 854,072 Europe 136,109 123,845 228,860 277,133 Japan 40,747 53,054 95,343 119,386 Total net revenues $ 766,535 $ 833,366 $ 1,493,208 $ 1,682,998
Disaggregation of Revenue by Primary Market	The Company classifies end markets into businesses with similar market drivers: Aerospace & Defense, Industrial and Test, Measurement & Emulation (AIT); Automotive, Broadcast & Consumer; Wired & Wireless; and Data Center. Additionally, revenue recognized from shipments to distributors but not yet subsequently sold to the end markets is classified as Channel Revenue. The Channel Revenue represents the difference between the shipments to distributors and what the distributors subsequently sold to the end customers within the same period. Channel Revenues for the second quarter and the first six months of fiscal 2021 and 2020 were less than 1%. Three Months Ended Six Months Ended (% of total net revenues) September 26, 2020 September 28, 2019 September 26, 2020 September 28, 2019 AIT 44 % 36 % 44 % 38 % Automotive, Broadcast and Consumer 16 16 14 15 Wired and Wireless 26 38 29 40 Data Center 14 10 13 7 Total net revenues 100 % 100 % 100 % 100 %

Significant Customers and Con_2

Significant Customers and Concentrations of Credit Risk (Details) - Customer	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Mar. 28, 2020
Concentration Risk [Line Items]
Percentage of Accounts Receivable Accounted From Company Distributor One	25.00%		25.00%		31.00%
Percentage of net revenues through resale of product from Company Distributor One	41.00%	40.00%	43.00%	40.00%
Number of End Customers Accounted For 10% or More of Net Revenues	0	1	0	1
Percentage of higher grade security investment in debt securities	97.00%		97.00%
Percentage of end customer accounted for more than 10% of revenue		12.00%		10.00%
Number of Other Distributors accounted for Net Revenues	0	0	0	0
Distribution For Subsequent Resale To OEMs [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	52.00%	49.00%	57.00%	49.00%

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Sep. 26, 2020	Mar. 28, 2020
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	$ 2,961,775	$ 2,139,816
Fair Value, Net Asset (Liability)		2,127,435
Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Financial Liabilities Fair Value Disclosure		12,381
Fair Value, Inputs, Level 1 [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	926,660	808,037
Fair Value, Net Asset (Liability)		808,037
Fair Value, Inputs, Level 1 [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Financial Liabilities Fair Value Disclosure		0
Fair Value, Inputs, Level 2 [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	2,035,115	1,331,779
Fair Value, Net Asset (Liability)		1,319,398
Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Financial Liabilities Fair Value Disclosure		12,381
Fair Value, Inputs, Level 3 [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Fair Value, Net Asset (Liability)		0
Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Financial Liabilities Fair Value Disclosure		0
Cash And Cash Equivalents [Member] | Money Market Funds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	385,263	656,038
Cash And Cash Equivalents [Member] | Financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	80,834	175,000
Cash And Cash Equivalents [Member] | Non-financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	269,884	361,692
Cash And Cash Equivalents [Member] | U.S. Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	187,981	213,273
Cash And Cash Equivalents [Member] | Foreign Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	110,237	244,300
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	385,263	656,038
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Non-financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	64,992	150,999
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	80,834	175,000
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Non-financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	269,884	361,692
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	122,989	62,274
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	110,237	244,300
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | Financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | Non-financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	325,000	150,000
Short-Term Investments [Member] | Non-financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	402,103	115,043
Short-Term Investments [Member] | U.S. Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	587,460	3,000
Short-Term Investments [Member] | Foreign Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	489,624	9,973
Short-Term Investments [Member] | Mortgage-Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	99,260	158,804
Short-Term Investments [Member] | Asset-backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	875	2,549
Short-Term Investments [Member] | Commercial Mortgage Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	19,300	50,144
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Non-financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	474,867	1,000
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage-Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Asset-backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Commercial Mortgage Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	325,000	150,000
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Non-financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	402,103	115,043
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	112,593	2,000
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	489,624	9,973
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	99,260	158,804
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	875	2,549
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Commercial Mortgage Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	19,300	50,144
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Non-financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign Government and Agency Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Commercial Mortgage Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0	0
Derivative Financial Instruments, Assets [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	2,416
Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0
Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	2,416
Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0
Other Long-term Investments [Member] | Equity Securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	1,538
Other Long-term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	1,538
Other Long-term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	0
Other Long-term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure	$ 0
Other Noncurrent Liabilities [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Financial Liabilities Fair Value Disclosure		12,381
Other Noncurrent Liabilities [Member] | Fair Value, Inputs, Level 1 [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Financial Liabilities Fair Value Disclosure		0
Other Noncurrent Liabilities [Member] | Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Financial Liabilities Fair Value Disclosure		12,381
Other Noncurrent Liabilities [Member] | Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Assets [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Financial Liabilities Fair Value Disclosure		$ 0

Fair Value Measurements (Deta_2

Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Sep. 26, 2020	Mar. 28, 2020	May 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost Method Investments, Fair Value Disclosure	$ 107,400
Three Point Zero Percent 2021 Senior Debentures [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Face Amount	$ 500,000
Debt Instrument, Interest Rate, Stated Percentage	3.00%
Debt Instrument, Maturity Date	Mar. 15, 2021
Fair value of convertible notes	$ 506,000
Two Point and Nine Five Percent 2024 Senior Debentures [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Face Amount	$ 750,000
Debt Instrument, Interest Rate, Stated Percentage	2.95%
Debt Instrument, Maturity Date	Jun. 1, 2024
Fair value of convertible notes	$ 804,000
Two Point and Three Seven Five Percent 2030 Senior Debentures [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Face Amount	$ 750,000
Debt Instrument, Interest Rate, Stated Percentage	2.375%
Debt Instrument, Maturity Date	Jun. 1, 2030
Fair value of convertible notes	$ 793,300
Two Point and Nine Five Percent 2024 Senior Debentures [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Face Amount	$ 750,000	$ 750,000
Debt Instrument, Interest Rate, Stated Percentage			2.95%

Financial Instruments (Details)

Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 26, 2020	Mar. 28, 2020
Available-for-sale securities
Amortized Cost	$ 2,956,056	$ 2,138,169
Gross Unrealized Gains	2,219	2,699
Gross Unrealized Losses	(454)	(1,052)
Estimated Fair Value	2,957,821	2,139,816
Money Market Funds [Member]
Available-for-sale securities
Amortized Cost	385,263	656,038
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	385,263	656,038
Financial institution securities [Member]
Available-for-sale securities
Amortized Cost	405,834	325,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	405,834	325,000
Non-financial institution securities [Member]
Available-for-sale securities
Amortized Cost	671,987	476,735
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	671,987	476,735
U.S. Government and Agency Securities [Member]
Available-for-sale securities
Amortized Cost	775,394	216,178
Gross Unrealized Gains	51	95
Gross Unrealized Losses	(4)	0
Estimated Fair Value	775,441	216,273
Foreign Government and Agency Securities [Member]
Available-for-sale securities
Amortized Cost	599,862	254,283
Gross Unrealized Gains	0	7
Gross Unrealized Losses	(1)	(17)
Estimated Fair Value	599,861	254,273
Mortgage-Backed Securities [Member]
Available-for-sale securities
Amortized Cost	97,500	156,836
Gross Unrealized Gains	2,017	2,445
Gross Unrealized Losses	(257)	(477)
Estimated Fair Value	99,260	158,804
Asset-backed Securities [Member]
Available-for-sale securities
Amortized Cost	857	2,533
Gross Unrealized Gains	18	18
Gross Unrealized Losses	0	(2)
Estimated Fair Value	875	2,549
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities
Amortized Cost	19,359	50,566
Gross Unrealized Gains	133	134
Gross Unrealized Losses	(192)	(556)
Estimated Fair Value	$ 19,300	$ 50,144

Financial Instruments (Details

Financial Instruments (Details 1) - USD ($) $ in Thousands	Sep. 26, 2020	Mar. 28, 2020
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Securities, Less Than 12 Months, Fair Value	$ 207,736	$ 76,724
Available-for-Sale Securities, Less Than 12 Months, Gross Unrealized Losses	(140)	(389)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	13,158	34,408
Available-for-Sale Securities, 12 Months or Greater, Gross Unrealized Losses	(314)	(663)
Available-for-Sale Securities, Fair Value, Total	220,894	111,132
Available-for-Sale Securities, Gross Unrealized Losses, Total	(454)	(1,052)
Non-financial institution securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Securities, Less Than 12 Months, Fair Value	19,993
Available-for-Sale Securities, Less Than 12 Months, Gross Unrealized Losses	0
Available-for-Sale Securities, 12 Months or Greater, Fair Value	0
Available-for-Sale Securities, 12 Months or Greater, Gross Unrealized Losses	0
Available-for-Sale Securities, Fair Value, Total	19,993
Available-for-Sale Securities, Gross Unrealized Losses, Total	0
U.S. Government and Agency Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Securities, Less Than 12 Months, Fair Value	149,947
Available-for-Sale Securities, Less Than 12 Months, Gross Unrealized Losses	(4)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	0
Available-for-Sale Securities, 12 Months or Greater, Gross Unrealized Losses	0
Available-for-Sale Securities, Fair Value, Total	149,947
Available-for-Sale Securities, Gross Unrealized Losses, Total	(4)
Debt Security, Government, Non-US [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Securities, Less Than 12 Months, Fair Value	24,997	30,998
Available-for-Sale Securities, Less Than 12 Months, Gross Unrealized Losses	(1)	(17)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	0	0
Available-for-Sale Securities, 12 Months or Greater, Gross Unrealized Losses	0	0
Available-for-Sale Securities, Fair Value, Total	24,997	30,998
Available-for-Sale Securities, Gross Unrealized Losses, Total	(1)	(17)
Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Securities, Less Than 12 Months, Fair Value	9,134	13,492
Available-for-Sale Securities, Less Than 12 Months, Gross Unrealized Losses	(76)	(88)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	12,474	31,819
Available-for-Sale Securities, 12 Months or Greater, Gross Unrealized Losses	(181)	(389)
Available-for-Sale Securities, Fair Value, Total	21,608	45,311
Available-for-Sale Securities, Gross Unrealized Losses, Total	(257)	(477)
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Securities, Less Than 12 Months, Fair Value		1,641
Available-for-Sale Securities, Less Than 12 Months, Gross Unrealized Losses		(2)
Available-for-Sale Securities, 12 Months or Greater, Fair Value		0
Available-for-Sale Securities, 12 Months or Greater, Gross Unrealized Losses		0
Available-for-Sale Securities, Fair Value, Total		1,641
Available-for-Sale Securities, Gross Unrealized Losses, Total		(2)
Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Securities, Less Than 12 Months, Fair Value	3,665	30,593
Available-for-Sale Securities, Less Than 12 Months, Gross Unrealized Losses	(59)	(282)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	684	2,589
Available-for-Sale Securities, 12 Months or Greater, Gross Unrealized Losses	(133)	(274)
Available-for-Sale Securities, Fair Value, Total	4,349	33,182
Available-for-Sale Securities, Gross Unrealized Losses, Total	$ (192)	$ (556)

Financial Instruments (Detail_2

Financial Instruments (Details 2) $ in Thousands	Sep. 26, 2020USD ($)
Amortized Cost
Due in one year or less	$ 2,454,654
Due after one year through five years	2,752
Due after five years through ten years	15,182
Due after ten years	98,205
Amortized Cost Total	2,570,793
Estimated Fair Value
Due in one year or less	2,454,704
Due after one year through five years	2,792
Due after five years through ten years	15,872
Due after ten years	99,190
Estimated Fair Value Total	2,572,558
Marketable debt securities with contractual maturities greater than one year but classified as short-term investment	$ 117,900

Financial Instruments (Detail_3

Financial Instruments (Details 3) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Investments, All Other Investments [Abstract]
Proceeds from sale of available-for-sale securities	$ 18,798	$ 143,529	$ 56,455	$ 299,623
Gross realized gains on sale of available-for-sale securities	53	607	413	1,212
Gross realized losses on sale of available-for-sale securities	(224)	(133)	(224)	(172)
Net realized gains (losses) on sale of available-for-sale securities	(171)	474	189	1,040
Amortization of premiums (discounts) on available-for-sale securities	$ (25)	$ 1,636	$ (117)	$ 2,347

Derivative Financial Instrume_2

Derivative Financial Instruments (Details Textual)	3 Months Ended
	Sep. 26, 2020USD ($)
Derivative [Line Items]
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	$ 0

Stock-Based Compensation Plan_2

Stock-Based Compensation Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Stock Based compensation expense
Share-based Payment Arrangement, Expense	$ 58,439	$ 49,822	$ 108,822	$ 92,575
Cost of Revenues [Member]
Stock Based compensation expense
Share-based Payment Arrangement, Expense	2,963	2,812	5,684	5,425
Research and Development [Member]
Stock Based compensation expense
Share-based Payment Arrangement, Expense	36,110	29,702	66,479	54,576
Selling, General and Administrative Expenses [Member]
Stock Based compensation expense
Share-based Payment Arrangement, Expense	$ 19,366	$ 17,308	$ 36,659	$ 32,574

Stock-Based Compensation Plan_3

Stock-Based Compensation Plans Stock-Based Compensation Plans (Details 1)	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.30%	1.80%	0.30%	1.80%
Dividend yield	1.50%	1.30%	1.50%	1.30%
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate			0.10%	1.90%
Dividend yield			1.40%	1.30%
Expected stock price volatility			38.00%	37.00%
Expected life of options (years)			1 year 3 months	1 year 3 months

Stock-Based Compensation Plan_4

Stock-Based Compensation Plans Stock-Based Compensation Plans (Details 3) - Restricted Stock Units (RSUs) [Member] - $ / shares shares in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Mar. 28, 2020
Number of Shares
Number of Shares, Beginning Balance (shares)			6,780	7,331
Number of Shares, Granted (shares)			2,968	2,756
Number of Shares, Vested (shares)			2,234	2,820
Number of Shares, Forfeited/Cancelled (shares)			488	487
Number of Shares, Ending Balance (shares)	7,026		7,026	6,780
Weighted-Average Grant-Date Fair Value Per Share
Weighted-Average Grant-Date Fair Value, Starting Balance (usd per share)			$ 80.53	$ 59.54
Weighted-Average Grant-Date Fair Value, Granted (usd per share)	$ 95.59	$ 113.02	95.11	109.53
Weighted-Average Grant-Date Fair Value, Vested (usd per share)			70.90	55.24
Weighted-Average Grant-Date Fair Value, Forfeited/Cancelled (usd per share)			82.66	75.09
Weighted-Average Grant-Date Fair Value, Ending Balance (usd per share)	$ 89.19		$ 89.19	$ 80.53

Stock-Based Compensation Plan_5

Stock-Based Compensation Plans (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Mar. 28, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ 31,915	$ 47,856	$ 35,154	$ 51,976
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Grant-Date Fair Value, Granted (usd per share)	$ 95.59	$ 113.02	$ 95.11		$ 109.53
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ 53,400	71,800
Tax benefits, RSU vesting	$ 12,400	$ 32,200	$ 12,700	$ 34,300
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP shares issued during period (shares)			283	241
ESPP shares issued during period, value			$ 19,800	$ 19,700
Weighted average fair value of stock purchase rights granted under ESPP (in dollars per share)			$ 31.40	$ 33.79
Equity Plan 2007 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (shares)	12,600		12,600
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (shares)	12,400		12,400

Net Income Per Common Share N_2

Net Income Per Common Share Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Debt Conversion [Line Items]
Net income	$ 193,816	$ 226,993	$ 287,652	$ 468,452
Weighted Average Number of Shares Outstanding, Basic	244,837	252,399	243,602	252,728
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	1,926	2,870	2,245	3,781
Weighted Average Number of Shares Outstanding, Diluted	246,763	255,269	245,847	256,509
Earnings Per Share, Basic	$ 0.79	$ 0.90	$ 1.18	$ 1.85
Earnings Per Share, Diluted	$ 0.79	$ 0.89	$ 1.17	$ 1.83

Inventories Inventories (Detail

Inventories Inventories (Details) - USD ($) $ in Thousands	Sep. 26, 2020	Mar. 28, 2020
Inventory Disclosure [Abstract]
Inventory, Raw Materials, Gross	$ 28,237	$ 35,562
Inventory, Work in Process, Gross	179,529	204,501
Inventory, Finished Goods, Gross	74,282	64,277
Inventory, Net	$ 282,048	$ 304,340

Debt and Credit Facility (Detai

Debt and Credit Facility (Details 1) - USD ($)	May 19, 2020	May 30, 2017	Mar. 12, 2014	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Mar. 28, 2020
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt, net						$ 744,427,000	$ 0
Line of Credit Facility, Maximum Borrowing Capacity				$ 400,000,000		400,000,000
AdditionalborrowingcapacityfromRevolvingCreditFacility				150,000,000		150,000,000
Line of Credit Facility, Average Outstanding Amount				0
Long-term debt				1,492,066,000		1,492,066,000		$ 747,110,000
Two Point and Nine Five Percent 2024 Senior Debentures [Member]
Debt Instrument [Line Items]
Discount Percent of Par		99.887%
Debt Instrument, Face Amount				750,000,000		750,000,000		750,000,000
Debt Instrument, Interest Rate, Stated Percentage		2.95%
Debt Instrument, Unamortized Discount				(466,000)		(466,000)		(525,000)
Debt Issuance Costs, Noncurrent, Net				2,081,000		2,081,000		2,365,000
Long Term Debt, Carrying Value before Hedging Adjustment				747,453,000		747,453,000		747,110,000
Interest Expense, Debt, Excluding Amortization				5,444,000	$ 5,444,000	10,887,000	11,986,000
Amortization of Debt Issuance Costs				142,000	142,000	284,000	284,000
Amortization of Debt Discount (Premium)				30,000	29,000	59,000	58,000
Interest Expense, Debt				$ 5,616,000	5,615,000	11,230,000	12,328,000
Proceeds from issuance of long-term debt, net		$ 745,200,000
Debt instrument, long term debt, remaining discount amortization period				3 years 8 months 12 days
Long-term debt								1,492,066,000
Debt Instrument, Interest Rate, Effective Percentage		2.968%
Two Point and Three Seven Five Percent 2030 Senior Debentures [Member]
Debt Instrument [Line Items]
Discount Percent of Par	99.973%
Debt Instrument, Face Amount				$ 750,000,000		750,000,000
Debt Instrument, Interest Rate, Stated Percentage	2.375%
Debt Instrument, Unamortized Discount				(196,000)		(196,000)
Debt Issuance Costs, Noncurrent, Net				5,191,000		5,191,000
Long Term Debt, Carrying Value before Hedging Adjustment				744,613,000		744,613,000
Interest Expense, Debt, Excluding Amortization				4,521,000	0	6,565,000	0
Amortization of Debt Issuance Costs				134,000	0	179,000	0
Amortization of Debt Discount (Premium)				4,000	0	7,000	0
Interest Expense, Debt				$ 4,659,000	0	6,751,000	0
Proceeds from issuance of long-term debt, net	$ 744,400,000
Debt instrument, long term debt, remaining discount amortization period				9 years 8 months 12 days
Debt Instrument, Interest Rate, Effective Percentage	2.378%
Three Point Zero Percent 2021 Senior Debentures [Member]
Debt Instrument [Line Items]
Discount Percent of Par			99.281%
Debt Instrument, Face Amount				$ 500,000,000		500,000,000		500,000,000
Debt Instrument, Interest Rate, Stated Percentage			3.00%
Debt Instrument, Unamortized Discount				(236,000)		(236,000)		(517,000)
Debt Issuance Costs, Noncurrent, Net				102,000		102,000		223,000
Interest Expense, Debt, Excluding Amortization				3,750,000	3,750,000	7,500,000	7,500,000
Amortization of Debt Issuance Costs				61,000	61,000	121,000	122,000
Amortization of Debt Discount (Premium)				140,000	136,000	281,000	271,000
Interest Expense, Debt				$ 3,951,000	$ 3,947,000	7,902,000	$ 7,893,000
Proceeds from issuance of long-term debt, net			$ 495,400,000
Debt instrument, long term debt, remaining discount amortization period				6 months
Long-term debt				$ 499,662,000		$ 499,662,000		$ 499,260,000
Debt Instrument, Interest Rate, Effective Percentage			3.115%

Debt and Credit Facility (Det_2

Debt and Credit Facility (Details 2) - USD ($) $ in Thousands	Sep. 26, 2020	Mar. 28, 2020
Debt Disclosure [Abstract]
Long-term debt	$ 1,492,066	$ 747,110

Common Stock Repurchase Progr_2

Common Stock Repurchase Program (Details) - USD ($)	6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Mar. 28, 2020	Oct. 22, 2019
Equity, Class of Treasury Stock [Line Items]
Stock repurchased during period	$ 53,700,000	$ 277,200,000
Treasury shares	0		0
Stock Repurchased During Period, Shares	(700,000)	(2,700,000)
Stock Repurchased During Period through ASR		1,700,000
Stock Repurchased through ASR, Value		$ 200,000,000
2019 Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Amount authorized for common stock repurchase				$ 1,000,000,000
Stock repurchased during period	$ 716,300,000
Total amount available for future repurchases	$ 283,700,000

Interest and Other Expense, N_3

Interest and Other Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Components of interest and other expense
Interest income	$ 1,969	$ 13,813	$ 6,923	$ 31,801
Interest expense	(14,226)	(9,562)	(25,883)	(20,693)
Other income (expense), net	1,486	8,078	(3,964)	12,833
Interest and other expense, net	$ (10,771)	$ 12,329	$ (22,924)	$ 23,941

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Sep. 26, 2020	Mar. 28, 2020
Components of accumulated other comprehensive income (loss)
Accumulated unrealized losses on available-for-sale securities, net of tax	$ 1,441	$ 1,319
Accumulated unrealized losses on hedging transactions, net of tax	(271)	(10,170)
Accumulated cumulative translation adjustment, net of tax	(9,458)	(11,426)
Accumulated other comprehensive income (loss)	$ (8,288)	$ (20,277)

Income Taxes (Details Textual)

Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Jun. 27, 2020
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 830	$ (11,148)	$ 70,356	$ 9,943
Effective Income Tax Rate Reconciliation, Percent	0.40%	(5.20%)	19.70%	2.10%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Impact of Adverse Decision for Prior Years Cost Sharing SBC					$ 56,800
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 7,000
Unrecognized Tax Benefits	155,000		$ 155,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	111,900		111,900
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 4,100		$ 4,100

Leases and Commitments - Schedu

Leases and Commitments - Schedule of Maturity of lease liability (Details) $ in Thousands	Sep. 26, 2020USD ($)
Fiscal
2021 (remaining six months)	$ 6,778
2022	11,776
2023	7,615
2024	6,533
2025	6,280
Thereafter	28,877
Total lease payments	67,859
Less: Imputed interest	(14,363)
Total lease liabilities	$ 53,496

Leases and Commitments - Narrat

Leases and Commitments - Narrative (Details) $ in Millions	3 Months Ended
	Sep. 26, 2020USD ($)
Other Commitments [Line Items]
Other commitments	$ 206.1
Open purchase Orders From Ordinary Operations [Member]
Other Commitments [Line Items]
Other commitments	$ 36.6
Maximum [Member]
Other Commitments [Line Items]
Purchase Commitments, Period for Payment	6 months
Minimum [Member]
Other Commitments [Line Items]
Purchase Commitments, Period for Payment	3 months

Leases and Commitments - Lease

Leases and Commitments - Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 26, 2020	Mar. 28, 2020
Leases [Abstract]
Other assets	$ 51,009	$ 57,819
Other accrued liabilities	10,545	11,109
Other long-term liabilities	$ 42,951	$ 48,964

Leases and Commitments - Compon

Leases and Commitments - Components of lease cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Leases [Abstract]
Operating lease cost	$ 3,558	$ 4,334	$ 7,258	$ 8,606
Lease income	53,496		53,496
Sublease Income	(1,050)	(671)	(1,972)	(1,467)
Total lease cost	$ 2,508	$ 3,663	$ 5,286	$ 7,139

Leases and Commitments - Other

Leases and Commitments - Other information (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019
Leases [Abstract]
Cash paid for operating leases included in operating cash flows	$ 6,808	$ 6,079
Weighted-average remaining lease term - operating leases (in years)	7 years 1 month 6 days
Weighted-average remaining discount rate - operating leases	5.70%

Contingencies (Details)

Contingencies (Details) $ in Millions	3 Months Ended
	Sep. 26, 2020USD ($)
Commitments and Contingencies Disclosure [Abstract]
Loss Contingency, Damages Sought, Value	$ 50

Goodwill and Acquisition-Rela_3

Goodwill and Acquisition-Related Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 26, 2020	Mar. 28, 2020
Gross and net amounts of goodwill and of acquisition-related intangibles
Goodwill	$ 619,413	$ 619,196
Total acquisition-related intangibles, gross	361,882	361,882
Less accumulated amortization	(180,655)	(161,538)
Acquisition-related intangibles, net	181,227	200,344
Total	124,235
Core Technology [Member]
Gross and net amounts of goodwill and of acquisition-related intangibles
Total finite-lived acquisition-related intangibles, gross	209,131	209,131
Less accumulated amortization	(118,400)	(105,007)
Total	$ 90,731	104,124
Weighted-Average Amortization Life	3 years 7 months 6 days
Other Intangibles [Member]
Gross and net amounts of goodwill and of acquisition-related intangibles
Total finite-lived acquisition-related intangibles, gross	$ 95,759	95,759
Less accumulated amortization	(62,255)	(56,531)
Total	$ 33,504	39,228
Weighted-Average Amortization Life	3 years 8 months 12 days
In-process research and development
Gross and net amounts of goodwill and of acquisition-related intangibles
In-process research and development	$ 56,992	$ 56,992

Goodwill and Acquisition-Rela_4

Goodwill and Acquisition-Related Intangibles (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of acquisition-related intangibles	$ 2,862	$ 2,169	$ 5,724	$ 2,569
Schedule of expected annual amortization expense for acquisition-related intangibles
2021 (remaining six months)	19,095		19,095
2022	35,401		35,401
2023	33,693		33,693
2024	29,443		29,443
2025	6,603		6,603
Total	$ 124,235		$ 124,235

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Segment Reporting Information [Line Items]
Net revenues	$ 766,535	$ 833,366	$ 1,493,208	$ 1,682,998
Revenue by EM, Percentage	100.00%	100.00%	100.00%	100.00%
AIT
Segment Reporting Information [Line Items]
Revenue by EM, Percentage	44.00%	36.00%	44.00%	38.00%
Automotive, Broadcast and Consumer
Segment Reporting Information [Line Items]
Revenue by EM, Percentage	16.00%	16.00%	14.00%	15.00%
Wired and Wireless
Segment Reporting Information [Line Items]
Revenue by EM, Percentage	26.00%	38.00%	29.00%	40.00%
Data Center
Segment Reporting Information [Line Items]
Revenue by EM, Percentage	14.00%	10.00%	13.00%	7.00%
North America
Segment Reporting Information [Line Items]
Net revenues	$ 223,781	$ 233,576	$ 410,075	$ 432,407
Asia Pacific
Segment Reporting Information [Line Items]
Net revenues	365,898	422,891	758,930	854,072
Europe
Segment Reporting Information [Line Items]
Net revenues	136,109	123,845	228,860	277,133
Japan
Segment Reporting Information [Line Items]
Net revenues	$ 40,747	$ 53,054	$ 95,343	$ 119,386

Subsequent Events (Details)

Subsequent Events (Details)	Oct. 17, 2020$ / shares
Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.38