Xilinx (XLNX) 10-K 17 May 16 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Apr. 02, 2016	Apr. 25, 2016	Sep. 25, 2015
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Apr. 2, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Entity Registrant Name	XILINX INC
Entity Central Index Key	743,988
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--04-02
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		253,728,000
Common Stock, par value (in dollars per share)	$ 0.01
Entity Public Float			$ 9,211,319,000

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Net revenues	$ 2,213,881	$ 2,377,344	$ 2,382,531
Cost of revenues	671,907	708,823	743,253
Gross margin	1,541,974	1,668,521	1,639,278
Operating expenses:
Research and development	533,891	525,745	492,447
Selling, general and administrative	331,652	353,670	378,607
Amortization of acquisition-related intangibles	6,550	9,537	9,887
Restructuring charges	0	24,491	0
Litigation and contingency	0	0	(9,410)
Total operating expenses	872,093	913,443	890,351
Operating income	669,881	755,078	748,927
Loss on Extinguishment of Debt	0	0	9,848
Interest and other expense, net	33,056	15,002	29,553
Income before income taxes	636,825	740,076	709,526
Provision for income taxes	85,958	91,860	79,138
Net income	$ 550,867	$ 648,216	$ 630,388
Net income per common share:
Basic (in dollars per share)	$ 2.14	$ 2.44	$ 2.37
Diluted (in dollars per share)	$ 2.05	$ 2.35	$ 2.19
Shares used in per share calculations:
Basic (in shares)	257,184	265,480	266,431
Diluted (in shares)	268,667	276,123	287,396

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 550,867	$ 648,216	$ 630,388
Other comprehensive income (loss), net of tax:
Change in net unrealized gains (losses) on available-for-sale securities	(916)	7,483	(11,241)
Reclassification adjustment for gains on available-for-sale securities	(106)	(6,832)	(167)
Net change in unrealized gains (losses) on hedging transactions	15,004	(11,074)	459
Other Comprehensive Income, Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(7,225)	2,753	1,707
Cumulative translation adjustment, net	(2,239)	(2,931)	34
Other comprehensive income (loss)	4,518	(10,601)	(9,208)
Total comprehensive income	$ 555,385	$ 637,615	$ 621,180

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Current assets:
Cash and cash equivalents	$ 503,816	$ 892,572
Short-term investments	2,833,883	2,410,489
Accounts receivable, net of allowances for doubtful accounts and customer returns of $3,341 and $3,353 in 2016 and 2015, respectively	307,458	246,615
Inventories	178,550	231,328
Deferred tax assets	0	79,519
Prepaid expenses and other current assets	95,226	74,528
Total current assets	3,918,933	3,935,051
Property, plant and equipment, at cost:
Land	65,298	65,298
Buildings	310,795	312,610
Machinery and equipment	390,573	380,303
Furniture and fixtures	43,916	46,412
Gross property, plant and equipment	810,582	804,623
Accumulated depreciation and amortization	(527,236)	(503,585)
Net property, plant and equipment	283,346	301,038
Long-term investments	220,807	266,902
Goodwill	159,296	159,296
Acquisition-related intangibles, net	6,202	12,752
Other assets	234,570	223,026
Total Assets	4,823,154	4,898,065
Current liabilities:
Accounts payable	101,534	80,113
Accrued payroll and related liabilities	154,294	156,600
Income taxes payable	6,286	19,693
Deferred income on shipments to distributors	51,758	66,071
Other accrued liabilities	45,108	64,676
Long-term Debt, Current Maturities	587,106	576,053
Total current liabilities	946,086	963,206
Long-term Debt, Excluding Current Maturities	995,835	994,839
Deferred tax liabilities	261,467	289,868
Long-term income taxes payable	15,889	13,245
Other long-term liabilities	$ 1,090	$ 1,366
Commitments and contingencies
Temporary Equity, Carrying Amount, Attributable to Parent	$ 12,894	$ 23,947
Stockholders' equity:
Preferred stock, $.01 par value; 2,000 shares authorized; none issued and outstanding	0	0
Common stock, $.01 par value; 2,000,000 shares authorized; 253,687 and 258,340 shares issued and outstanding in 2016 and 2015, respectively	2,537	2,583
Additional paid-in capital	726,921	653,882
Retained earnings	1,867,066	1,966,278
Accumulated other comprehensive loss	(6,631)	(11,149)
Total stockholders’ equity	2,589,893	2,611,594
Total Liabilities, Temporary Equity and Stockholders’ Equity	$ 4,823,154	$ 4,898,065

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 3,341	$ 3,353
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares issued	253,687,000	258,340,000
Common stock, shares outstanding	253,687,000	258,340,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Cash flows from operating activities:
Net income	$ 550,867	$ 648,216	$ 630,388
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	50,828	55,266	55,464
Amortization	17,613	19,648	19,808
Stock-based compensation	111,984	99,859	94,314
Loss on Extinguishment of Debt	0	0	9,848
Net (gain) loss on sale of available-for-sale securities	(370)	(11,878)	332
Amortization of debt discount on convertible debentures	12,048	12,022	16,319
Provision for deferred income taxes	44,128	17,802	53,854
Excess tax benefit from stock-based compensation	(16,153)	(19,662)	(30,754)
Others	2,000	122	(1,618)
Changes in assets and liabilities:
Accounts receivable, net	(60,843)	21,219	(38,658)
Inventories	52,323	2,664	(32,333)
Prepaid expenses and other current assets	(1,261)	(13,118)	(4,754)
Other assets	(11,945)	(531)	(21,335)
Accounts payable	21,422	(69,583)	76,929
Accrued liabilities (including restructuring activities)	(16,592)	1,795	19,659
Income taxes payable	(11,635)	15,967	(44,287)
Deferred income on shipments to distributors	(14,312)	10,972	1,741
Net cash provided by operating activities	730,102	790,780	804,917
Cash flows from investing activities:
Purchases of available-for-sale securities	(3,262,324)	(3,742,742)	(3,843,395)
Proceeds from sale and maturity of available-for-sale securities	2,882,342	3,756,021	3,900,858
Purchases of property, plant and equipment	(34,004)	(29,619)	(44,865)
Other investing activities	(9,950)	29,296	16,048
Net cash provided by (used in) investing activities	(423,936)	12,956	28,646
Cash flows from financing activities:
Repayments of Convertible Debt	0	0	(1,234,086)
Payments for Repurchase of Common Stock	443,181	651,006	241,076
Proceeds from issuance of common stock through various stock plans, net	51,094	52,661	238,158
Payment of dividends to stockholders	(318,988)	(306,158)	(267,343)
Proceeds from Issuance of Long-term Debt	0	0	990,149
Excess tax benefit from stock-based compensation	16,153	19,662	30,754
Net cash used in financing activities	(694,922)	(884,841)	(483,444)
Net increase (decrease) in cash and cash equivalents	(388,756)	(81,105)	350,119
Cash and cash equivalents at beginning of period	892,572	973,677	623,558
Cash and cash equivalents at end of period	503,816	892,572	973,677
Supplemental disclosure of cash flow information:
Interest paid	41,375	41,589	36,847
Income taxes paid, net	$ 53,425	$ 57,896	$ 68,215

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Common stock, shares outstanding, beginning balance at Mar. 30, 2013		263,649
Total stockholders' equity, beginning balance at Mar. 30, 2013	$ 2,963,296	$ 2,636	$ 1,276,278	$ 1,675,722	$ 8,660
Components of comprehensive income:
Net income	630,388			630,388
Other comprehensive income (loss)	(9,208)				(9,208)
Issuance of common shares under employee stock plans, Shares		10,124
Issuance of common shares under employee stock plans, Value	238,158	$ 101	238,057
Repurchase and retirement of common stock, Shares		(5,136)
Stock Repurchased and Retired During Period, Value	242,094	$ 51	148,747	93,296
Stock-based compensation expense	94,314		94,314
Stock-based compensation capitalized in inventory	416		416
Temporary equity reclassification	(34,999)		(34,999)
Extinguishment of Debt, Amount	(646,650)		(646,650)
Cash dividends declared	(267,343)			(267,343)
Net excess tax benefits from stock-based compensation	26,404		26,404
Common stock, shares outstanding, ending balance at Mar. 29, 2014		268,637
Total stockholders' equity, ending balance at Mar. 29, 2014	2,752,682	$ 2,686	805,073	1,945,471	(548)
Components of comprehensive income:
Net income	648,216			648,216
Other comprehensive income (loss)	(10,601)				(10,601)
Issuance of common shares under employee stock plans, Shares		5,058
Issuance of common shares under employee stock plans, Value	52,661	$ 51	52,610
Repurchase and retirement of common stock, Shares		(15,355)
Stock Repurchased and Retired During Period, Value	649,990	$ 154	328,585	321,251
Stock-based compensation expense	99,859		99,859
Stock-based compensation capitalized in inventory	(5)		(5)
Temporary equity reclassification	11,052		11,052
Cash dividends declared	(306,158)			(306,158)
Net excess tax benefits from stock-based compensation	$ 13,878		13,878
Common stock, shares outstanding, ending balance at Mar. 28, 2015	258,340	258,340
Total stockholders' equity, ending balance at Mar. 28, 2015	$ 2,611,594	$ 2,583	653,882	1,966,278	(11,149)
Components of comprehensive income:
Net income	550,867			550,867
Other comprehensive income (loss)	4,518				4,518
Issuance of common shares under employee stock plans, Shares		5,043
Issuance of common shares under employee stock plans, Value	51,094	$ 51	51,043
Repurchase and retirement of common stock, Shares		(9,696)
Stock Repurchased and Retired During Period, Value	443,181	$ 97	111,993	331,091
Stock-based compensation expense	111,984		111,984
Stock-based compensation capitalized in inventory	(455)		(455)
Temporary equity reclassification	11,052		11,052
Cash dividends declared	(318,988)			(318,988)
Net excess tax benefits from stock-based compensation	$ 11,408		11,408
Common stock, shares outstanding, ending balance at Apr. 02, 2016	253,687	253,687
Total stockholders' equity, ending balance at Apr. 02, 2016	$ 2,589,893	$ 2,537	$ 726,921	$ 1,867,066	$ (6,631)

Consolidated Statements of Sto8

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Retained Earnings [Member]
Cash dividends per share (in dollars per share)	$ 1.24	$ 1.16	$ 1

Nature of Operations

Nature of Operations	12 Months Ended
	Apr. 02, 2016
Nature of Operations [Abstract]
Nature of Operations	Nature of Operations Xilinx, Inc. (Xilinx or the Company) designs, develops and markets programmable devices and associated technologies, including advanced ICs in the form of PLDs, software design tools and predefined system functions delivered as IP. In addition to its programmable platforms, the Company provides design services, customer training, field engineering and technical support. The wafers used to manufacture its products are obtained primarily from independent wafer manufacturers located in Taiwan and Korea. The Company is dependent on these foundries to produce and deliver silicon wafers on a timely basis. The Company is also dependent on subcontractors, primarily located in the Asia Pacific region, to provide semiconductor assembly, test and shipment services. Xilinx is a global company with sales offices throughout the world. The Company derives over one-half of its revenues from international sales, primarily in the Asia Pacific region, Europe and Japan.

Summary of Significant Accounti

Summary of Significant Accounting Policies and Concentrations of Risk	12 Months Ended
	Apr. 02, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and Concentrations of Risk	Summary of Significant Accounting Policies and Concentrations of Risk Basis of Presentation The accompanying consolidated financial statements include the accounts of Xilinx and its wholly-owned subsidiaries after elimination of all intercompany transactions. The Company uses a 52 - to 53 -week fiscal year ending on the Saturday nearest March 31. Fiscal 2016 was a 53-week year ended on April 2, 2016 . Each of Fiscal 2015 and 2014 was a 52-week year, ended on March 28, 2015 and March 29, 2014 , respectively. Fiscal 2017 will be a 52-week year ending on April 1, 2017 . Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements and the reported amounts of net revenues and expenses during the reporting period. Such estimates relate to, among others, the useful lives of assets, assessment of recoverability of property, plant and equipment, long-lived assets and goodwill, inventory write-downs, allowances for doubtful accounts, customer returns, deferred tax assets, stock-based compensation, potential reserves relating to litigation and tax matters, valuation of certain investments and derivative financial instruments as well as other accruals or reserves. Actual results may differ from those estimates and such differences may be material to the financial statements. Cash Equivalents and Investments Cash equivalents consist of highly liquid investments with original maturities from the date of purchase of three months or less. These investments consist of money market funds, non-financial institution securities, U.S. and foreign government and agency securities, municipal bonds and financial institution securities. Short-term investments consist of mortgage-backed securities, non-financial institution securities, U.S. and foreign government and agency securities, financial institution securities, asset-backed securities, bank loans, a debt mutual fund and municipal bonds with original maturities greater than three months and remaining maturities less than one year from the balance sheet date. Long-term investments consist of mortgage-backed securities, a debt mutual fund, auction rate securities, municipal bonds and asset-backed securities with remaining maturities greater than one year, unless the investments are specifically identified to fund current operations, in which case they are classified as short-term investments. As of April 2, 2016 and March 28, 2015 , long-term investments also included approximately $10.0 million and $10.3 million , respectively, of auction rate securities that experienced failed auctions in the fourth quarter of fiscal 2008. These auction rate securities are secured primarily by pools of student loans originated under Federal Family Education Loan Program that are substantially guaranteed by the U. S. Department of Education. Equity investments are also classified as long-term investments since they are not intended to fund current operations. The Company maintains its cash balances with various banks with high quality ratings, and with investment banking and asset management institutions. The Company manages its liquidity risk by investing in a variety of money market funds, high-grade commercial paper, corporate bonds, municipal bonds, U.S. and foreign government and agency securities, asset-backed securities, mortgage-backed securities, bank loans and debt mutual funds. This diversification of investments is consistent with its policy to maintain liquidity and ensure the ability to collect principal. The Company maintains an offshore investment portfolio denominated in U.S. dollars. All investments are made pursuant to corporate investment policy guidelines. Investments include Euro commercial paper, Euro dollar bonds, Euro dollar floating rate notes, offshore time deposits, U.S. and foreign government and agency securities, asset-backed securities, bank loans and mortgage-backed securities issued by U.S. government-sponsored enterprises and agencies. Management classifies investments as available-for-sale or held-to-maturity at the time of purchase and re-evaluates such designation at each balance sheet date, although classification is not generally changed. Securities are classified as held-to-maturity when the Company has the positive intent and the ability to hold the securities until maturity. Held-to-maturity securities are carried at cost adjusted for amortization of premiums and accretion of discounts to maturity. Such amortization, as well as any interest on the securities, is included in interest income. No investments were classified as held-to-maturity as of April 2, 2016 or March 28, 2015 . Available-for-sale securities are carried at fair value with the unrealized gains or losses, net of tax, included as a component of accumulated other comprehensive income (loss) in stockholders' equity. See "Note 3. Fair Value Measurements" for information relating to the determination of fair value. Realized gains and losses on available-for-sale securities are included in interest and other expense, net, and declines in value judged to be other than temporary are included in impairment loss on investments. In determining if and when a decline in value below the adjusted cost of marketable debt and equity securities is other than temporary, we evaluate on an ongoing basis the market conditions, trends of earnings, financial condition, credit ratings, any underlying collateral and other key measures for our investments. The cost of securities matured or sold is based on the specific identification method. In determining whether a decline in value of non-marketable equity investments in private companies is other than temporary, the assessment is made by considering available evidence including the general market conditions in the investee's industry, the investee's product development status, the investee's ability to meet business milestones and the financial condition and near-term prospects of the individual investee, including the rate at which the investee is using its cash, the investee's need for possible additional funding at a lower valuation and bona fide offers to purchase the investee from a prospective acquirer. When a decline in value is deemed to be other than temporary, the Company recognizes an impairment loss in the current period's operating results to the extent of the decline. Accounts Receivable The allowance for doubtful accounts reflects the Company's best estimate of probable losses inherent in the accounts receivable balance. The Company determines the allowance based on the aging of Xilinx's accounts receivable, historical experience, known troubled accounts, management judgment and other currently available evidence. Xilinx writes off accounts receivable against the allowance when Xilinx determines a balance is uncollectible and no longer actively pursues collection of the receivable. The amounts of accounts receivable written off were insignificant for all periods presented. 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) April 2, 2016 March 28, 2015 Raw materials $ 15,346 $ 14,174 Work-in-process 123,675 183,472 Finished goods 39,529 33,682 $ 178,550 $ 231,328 The Company reviews and sets standard costs quarterly to approximate current actual manufacturing costs. The Company's manufacturing overhead standards for product costs are calculated assuming full absorption of actual spending over actual volumes. Given the cyclicality of the market, the obsolescence of technology and product lifecycles, the Company writes down inventory based on forecasted demand and technological obsolescence. These forecasts are developed based on inputs from the Company's customers, including bookings and extended but uncommitted demand forecasts, and internal analyses such as customer historical purchasing trends and actual and anticipated design wins, as well as market and economic conditions, technology changes, new product introductions and changes in strategic direction. These factors require estimates that may include uncertain elements. The estimates of future demand that the Company uses in the valuation of inventory are the basis for its published revenue forecasts, which are also consistent with our short-term manufacturing plans. The differences between the Company's demand forecast and the actual demand in the recent past have not resulted in any material write down in the Company's inventory. If the Company's demand forecast for specific products is greater than actual demand and the Company fails to reduce manufacturing output accordingly, the Company could be required to write down additional inventory, which would have a negative impact on the Company's gross margin. Property, Plant and Equipment Property, plant and equipment are recorded at cost, net of accumulated depreciation. Depreciation for financial reporting purposes is computed using the straight-line method over the estimated useful lives of the assets of three to five years for machinery, equipment, furniture and fixtures and 15 to 30 years for buildings. Depreciation expense totaled $50.8 million , $55.3 million and $55.5 million for fiscal 2016 , 2015 and 2014 , respectively. Impairment of Long-Lived Assets The Company evaluates the carrying value of long-lived assets and certain identifiable intangible assets to be held and used for impairment if indicators of potential impairment exist. Impairment indicators are reviewed on a quarterly basis. When indicators of impairment exist and assets are held for use, the Company estimates future undiscounted cash flows attributable to the assets. In the event such cash flows are not expected to be sufficient to recover the recorded value of the assets, the assets are written down to their estimated fair values based on the expected discounted future cash flows attributable to the assets or based on appraisals. When assets are removed from operations and held for sale, Xilinx estimates impairment losses as the excess of the carrying value of the assets over their fair value. See "Note 8. Restructuring Charges" for more information about the Company's write-offs of acquisition-related intangibles recorded in fiscal 2015. Goodwill Goodwill is not amortized but is subject to impairment tests on an annual basis, or more frequently if indicators of potential impairment exist, using a fair-value-based approach. Based on the impairment review performed during the fourth quarter of fiscal 2016 , there was no impairment of goodwill in fiscal 2016 . Unless there are indicators of impairment, the Company's next impairment review for goodwill will be performed and completed in the fourth quarter of fiscal 2017 . To date, no impairment indicators have been identified. Revenue Recognition Sales to distributors are made under agreements providing distributor price adjustments and rights of return under certain circumstances. Revenue and costs relating to distributor sales are deferred until products are sold by the distributors to the distributors' end customers. For fiscal 2016 , approximately 60% of the Company's net revenues were from products sold to distributors for subsequent resale to OEMs or their subcontract manufacturers. Revenue recognition depends on notification from the distributor that product has been sold to the distributor's end customer. Also reported by the distributor are product resale price, quantity and end customer shipment information, as well as inventory on hand. Reported distributor inventory on hand is reconciled to deferred revenue balances monthly. The Company maintains system controls to validate distributor data and to verify that the reported information is accurate. Deferred income on shipments to distributors reflects the estimated effects of distributor price adjustments and the amount of gross margin expected to be realized when distributors sell through product purchased from the Company. Accounts receivable from distributors are recognized and inventory is relieved when title to inventories transfers, typically upon shipment from Xilinx at which point the Company has a legally enforceable right to collection under normal payment terms. As of April 2, 2016 , the Company had $70.9 million of deferred revenue and $19.1 million of deferred cost of revenues recognized as a net $51.8 million of deferred income on shipments to distributors. As of March 28, 2015 , the Company had $87.7 million of deferred revenue and $21.6 million of deferred cost of revenues recognized as a net $66.1 million of deferred income on shipments to distributors. The deferred income on shipments to distributors that will ultimately be recognized in the Company's consolidated statement of income will be different than the amount shown on the consolidated balance sheet due to actual price adjustments issued to the distributors when the product is sold to their end customers. Revenue from sales to the Company's direct customers is recognized upon shipment provided that persuasive evidence of a sales arrangement exists, the price is fixed or determinable, title has transferred, collection of resulting receivables is reasonably assured, and there are no customer acceptance requirements and no remaining significant obligations. For each of the periods presented, there were no significant acceptance provisions with the Company's direct customers. Revenue from software licenses is deferred and recognized as revenue over the term of the licenses of one year. Revenue from support services is recognized when the service is performed. Revenue from Support Products, which includes software and services sales, was less than 5% of net revenues for all of the periods presented. Allowances for end customer sales returns are recorded based on historical experience and for known pending customer returns or allowances. Foreign Currency Translation The U.S. dollar is the functional currency for the Company's Ireland and Singapore subsidiaries. Monetary assets and liabilities that are not denominated in the functional currency are remeasured into U.S. dollars, and the resulting gains or losses are included in the consolidated statements of income under interest and other expense, net. The remeasurement gains or losses were immaterial for all fiscal periods presented. The local currency is the functional currency for each of the Company's other wholly-owned foreign subsidiaries. Assets and liabilities are translated from foreign currencies into U.S. dollars at month-end exchange rates and statements of income are translated at the average monthly exchange rates. Exchange gains or losses arising from translation of foreign currency denominated assets and liabilities (i.e., cumulative translation adjustment) are included as a component of accumulated other comprehensive income (loss) in stockholders' equity. Derivative Financial Instruments To reduce financial risk, the Company periodically enters into financial arrangements as part of the Company's ongoing asset and liability management activities. Xilinx uses derivative financial instruments to hedge fair values of underlying assets and liabilities or future cash flows which are exposed to foreign currency or commodity price fluctuations. The Company does not enter into derivative financial instruments for trading or speculative purposes. See "Note 5. Derivative Financial Instruments" for detailed information about the Company's derivative financial instruments. Research and Development Expenses Research and development costs are current period expenses and charged to expense as incurred. Stock-Based Compensation The Company has equity incentive plans that are more fully discussed in "Note 6. Stock-Based Compensation Plans." The authoritative guidance of accounting for share-based payment requires the Company to measure the cost of all employee equity awards (that are expected to be exercised or vested) based on the grant-date fair value of those awards, and to record that cost as compensation expense over the period during which the employee is required to perform service in exchange for the award (over the vesting period of the award). The authoritative guidance of accounting for share-based payment requires cash flows resulting from excess tax benefits to be classified as a part of cash flows from financing activities. Excess tax benefits are realized tax benefits from tax deductions for exercised options in excess of the deferred tax asset attributable to stock compensation costs for such options. The exercise price of employee stock options is equal to the market price of Xilinx common stock (defined as the closing trading price reported by The NASDAQ Global Select Market) on the date of grant. Additionally, Xilinx's ESPP is deemed a compensatory plan under the authoritative guidance of accounting for share-based payments. Accordingly, the ESPP is included in the computation of stock-based compensation expense. The Company uses the straight-line attribution method to recognize stock-based compensation costs over the requisite service period of the award. Upon exercise, cancellation or expiration of stock options, deferred tax assets for options with multiple vesting dates are eliminated for each vesting period on a first-in, first-out basis as if each award had a separate vesting period. Income Taxes All income tax amounts reflect the use of the liability method under the accounting for income taxes, as interpreted by FASB authoritative guidance for measuring uncertain tax positions . Under this method, deferred tax assets and liabilities are determined based on the expected future tax consequences of temporary differences between the carrying amounts of assets and liabilities for financial and income tax reporting purposes. 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 both fiscal 2016 and 2015 , the accrual balance of the product warranty liability was 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 our 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. Concentrations of Credit Risk Avnet, one of the Company's distributors, distributes the Company's products worldwide. As of April 2, 2016 and March 28, 2015 , Avnet accounted for 75% and 67% of the Company's total net accounts receivable, respectively. Resale of product through Avnet accounted for 50% , 43% and 46% of the Company's worldwide net revenues in fiscal 2016 , 2015 and 2014 , respectively. The percentage of net accounts receivable due from Avnet and the percentage of worldwide net revenues from Avnet are consistent with historical patterns. 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 consolidated balance sheet. The Company attempts to mitigate the concentration of credit risk in its trade receivables through its credit evaluation process, collection terms and 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 from distributors. No end customer accounted for more than 10% of the Company's worldwide net revenues for any of the periods presented. The Company mitigates concentrations of credit risk in its investments in debt securities by currently investing more than 86% of its portfolio in AA 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 April 2, 2016 , approximately 35% of the portfolio consisted of mortgage-backed securities. All of the mortgage-backed securities in the 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. The global credit markets may experience adverse conditions that negatively impact the values of various types of investment and non-investment grade securities. The global credit and capital markets may experience significant volatility and disruption due to instability in the global financial system, uncertainty related to global economic conditions and concerns regarding sovereign financial stability. Therefore, there is a risk that we may incur other-than-temporary impairment charges for certain types of investments should credit market conditions deteriorate. See "Note 4. Financial Instruments" for a table of the Company's available-for-sale securities. Adoption of New Accounting Standard for Classification of Deferred Taxes In November 2015, the FASB issued the authoritative guidance regarding balance sheet classification of deferred taxes. The guidance requires companies to classify all deferred tax assets and liabilities as non-current on the balance sheet instead of separating deferred taxes into current and non-current amounts. This guidance is effective for public business entities for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The amendments can be applied retrospectively or prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. The Company adopted this guidance in the fourth quarter of fiscal year 2016 on a prospective basis, and therefore, no adjustments were made to the prior periods. Recent Accounting Pronouncements In April 2014, the FASB issued the authoritative guidance that outlines a new global revenue recognition standard that replaces virtually all existing US GAAP guidance on contracts with customers and the related other assets and deferred costs. The guidance provides a five-step process for recognizing revenue that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires expanded qualitative and quantitative disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In July 2015, FASB approved the deferral of the effective date of this guidance by one year. As a result, this guidance will be effective for the Company beginning in fiscal year 2019, with an option to early adopt in fiscal year 2018. The new standard is required to be applied retrospectively to each prior reporting period presented, or retrospectively with the cumulative effect of initially applying it recognized at the date of initial application. The Company is currently evaluating the full impact of this new guidance on its consolidated financial statements, including selection of the transition method. However, assuming all other revenue recognition criteria have been met, it is likely that the new guidance would require the Company to recognize revenue and cost relating to distributor sales upon product delivery, subject to estimated allowance for distributor price adjustments and rights of return. In July 2015, the FASB issued the authoritative guidance that requires an entity to measure inventory at the lower of cost or net realizable value (NRV). NRV is the estimated selling price in the ordinary course of business, less reasonably predictable cost of completion, disposal, and transportation. This guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, which for Xilinx would be the first quarter of fiscal year 2018. The amendments should be applied prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In January 2016, the FASB issued the final guidance regarding how companies measure equity investments that do not result in consolidation and are not accounted for under the equity method and how they present changes in the fair value of financial liabilities measured under the fair value option that are attributable to their own credit. The new guidance also changes certain disclosure requirements and other aspects of current US GAAP. It does not change the guidance for classifying and measuring investments in debt securities and loans. Early adoption is permitted. The guidance is effective for public business entities for annual periods beginning after December 15, 2017, and interim periods within those annual periods, which for Xilinx would be the first quarter of fiscal year 2019. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In February 2016, the FASB issued the authoritative guidance on leases. The new standard requires the recognition of assets and liabilities arising from lease transactions on the balance sheet and will also require significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. Accordingly, a lessee will recognize a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. The new standard is effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, which for Xilinx would be the first quarter of fiscal year 2020. Early adoption is permitted. The new standard must be adopted using a modified retrospective transition, and provides for certain practical expedients. In addition, the transition will require application of the new guidance at the beginning of the earliest comparative period presented. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In March 2016, the FASB issued the authoritative guidance regarding contingent put and call options in debt instruments. The new guidance simplifies the embedded derivative analysis for debt instruments containing contingent call or put options, whereby a contingent put or call option embedded in a debt instrument would be evaluated for possible separate accounting as a derivative instrument without regard to the nature of the exercise contingency. The new guidance will be effective for public business entities in fiscal years beginning after December 15, 2016, including interim periods within those years, which for Xilinx would be the first quarter of fiscal year 2018. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In March 2016, the FASB finalized its amendments to the guidance in the new revenue standard on assessing whether an entity is a principal or an agent in a revenue transaction. The amendments clarify how an entity should identify the unit of accounting for the principal versus agent evaluation, and how it should apply the control principle to certain types of arrangements, such as service transactions, by explaining what a principal controls before the specified good or service is transferred to the customer. The FASB also addressed how an entity acting as a principal would determine its transaction price when it does not know the price charged to its customer for its goods or services by an intermediary. The amendments have the same effective date and transition requirements as the new revenue standard, which for Xilinx would be the beginning of fiscal year 2019. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In March 2016, the FASB issued the authoritative guidance that simplifies various aspects related to how share-based payments are accounted for and presented in the financial statements. The areas for simplification involve several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The new guidance will be effective for public business entities in fiscal years beginning after December 15, 2016, including interim periods within those years, which for Xilinx would be the first quarter of fiscal year 2018. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In April 2016, the FASB finalized amendments to the guidance in the new revenue standard on identifying performance obligations and accounting for licenses of intellectual property. The amendments address implementation issues that were raised by stakeholders and discussed by the Revenue Recognition Transition Resource Group. The amendments have the same effective date and transition requirements as the new revenue standard, which for Xilinx would be the beginning of fiscal year 2019. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Apr. 02, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The 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. For certain other securities, such as student loan auction rate securities, the Company performs its own valuation analysis using a discounted cash flow pricing model. 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 fiscal 2016 and the Company did not adjust or override any fair value measurements as of April 2, 2016 . 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. The Company's Level 1 assets consist of U.S. government and agency securities and money market funds. 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. The Company's Level 2 assets consist of financial institution securities, non-financial institution securities, municipal bonds, U.S. government and agency securities, foreign government and agency securities, mortgage-backed securities, debt mutual funds, bank loans, asset-backed securities and commercial mortgage-backed securities. The Company's Level 2 assets and liabilities also include foreign currency forward contracts and commodity swap contracts. 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. The Company's Level 3 assets and liabilities include student loan auction rate securities. 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 April 2, 2016 and March 28, 2015 : April 2, 2016 (In thousands) Quoted Significant Significant Total Fair Assets Cash equivalents: Money market funds $ 232,698 $ — $ — $ 232,698 Non-financial institution securities — 104,964 — 104,964 Foreign government and agency securities — 98,967 — 98,967 Municipal bonds — 1,003 — 1,003 Short-term investments: Financial institution securities — 284,853 — 284,853 Non-financial institution securities — 460,148 — 460,148 Municipal bonds — 61,579 — 61,579 U.S. government and agency securities 81,873 110,420 — 192,293 Foreign government and agency securities — 214,201 — 214,201 Mortgage-backed securities — 1,067,157 — 1,067,157 Debt mutual fund — 35,116 — 35,116 Bank loans — 102,015 — 102,015 Asset-backed securities — 210,051 — 210,051 Commercial mortgage-backed securities — 206,470 — 206,470 Long-term investments: Auction rate securities — — 9,977 9,977 Municipal bonds — 7,100 — 7,100 Mortgage-backed securities — 140,382 — 140,382 Debt mutual fund — 56,785 — 56,785 Asset-backed securities — 6,563 — 6,563 Derivative financial instruments, net — 744 — 744 Total assets measured at fair value $ 314,571 $ 3,168,518 $ 9,977 $ 3,493,066 March 28, 2015 (In thousands) Quoted Significant Significant Total Fair Assets Cash equivalents: Money market funds $ 235,583 $ — $ — $ 235,583 Financial institution securities — 229,999 — 229,999 Non-financial institution securities — 89,995 — 89,995 U.S. government and agency securities — 200,392 — 200,392 Foreign government and agency securities — 37,996 — 37,996 Short-term investments: Financial institution securities — 75,000 — 75,000 Non-financial institution securities — 339,029 — 339,029 Municipal bonds — 40,006 — 40,006 U.S. government and agency securities 256,514 301,010 — 557,524 Foreign government and agency securities — 159,936 — 159,936 Mortgage-backed securities — 859,330 — 859,330 Debt mutual fund — 38,608 — 38,608 Bank loans — 98,100 — 98,100 Asset-backed securities — 204,510 — 204,510 Commercial mortgage-backed securities — 38,446 — 38,446 Long-term investments: Auction rate securities — — 10,312 10,312 Municipal bonds — 9,650 — 9,650 Mortgage-backed securities — 180,906 — 180,906 Debt mutual fund — 56,592 — 56,592 Asset-backed securities — 7,948 — 7,948 Commercial mortgage-backed securities — 1,494 — 1,494 Total assets measured at fair value $ 492,097 $ 2,968,947 $ 10,312 $ 3,471,356 Liabilities Derivative financial instruments, net $ — $ 9,251 $ — $ 9,251 Total liabilities measured at fair value $ — $ 9,251 $ — $ 9,251 Net assets measured at fair value $ 492,097 $ 2,959,696 $ 10,312 $ 3,462,105 Changes in Level 3 Instruments Measured at Fair Value on a Recurring Basis The following table is a reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3): Years Ended (In thousands) April 2, 2016 March 28, 2015 Balance as of beginning of period $ 10,312 $ 20,160 Total realized and unrealized gains (losses): Included in other comprehensive income (loss) (335 ) 1,152 Sales and settlements, net (1) — (11,000 ) Balance as of end of period $ 9,977 $ 10,312 (1) During fiscal 2015 , the Company redeemed $11.0 million of student loan auction rate securities for cash at par value. As of April 2, 2016 , marketable securities measured at fair value using Level 3 inputs were comprised of $10.0 million of student loan auction rate securities. Financial Instruments Not Recorded at Fair Value on a Recurring Basis The Company's 2017 Convertible Notes, 2019 Notes and 2021 Notes are measured at fair value on a quarterly basis for disclosure purposes. The fair values of the 2017 Convertible Notes, 2019 Notes and 2021 Notes as of April 2, 2016 were approximately $990.5 million , $503.6 million and $523.6 million , respectively, based on the last trading price of the respective debentures for the period (classified as Level 2 in fair value hierarchy due to relatively low trading volume).

Financial Instruments

Financial Instruments	12 Months Ended
	Apr. 02, 2016
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: April 2, 2016 March 28, 2015 (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 $ 232,698 $ — $ — $ 232,698 $ 235,583 $ — $ — $ 235,583 Financial institution — securities 284,853 — — 284,853 304,999 — — 304,999 Non-financial institution — securities 564,480 862 (230 ) 565,112 429,005 25 (6 ) 429,024 Auction rate securities 10,500 — (523 ) 9,977 10,500 — (188 ) 10,312 Municipal bonds 68,938 877 (133 ) 69,682 49,064 744 (152 ) 49,656 U.S. government and agency securities 192,291 73 (71 ) 192,293 757,954 91 (129 ) 757,916 Foreign government and agency securities 313,168 — — 313,168 197,932 — — 197,932 Mortgage-backed securities 1,200,071 12,848 (5,380 ) 1,207,539 1,035,598 8,809 (4,171 ) 1,040,236 Asset-backed securities 216,068 1,151 (605 ) 216,614 211,487 1,130 (159 ) 212,458 Debt mutual funds 101,350 — (9,449 ) 91,901 101,350 — (6,150 ) 95,200 Bank loans 102,092 25 (102 ) 102,015 98,131 29 (60 ) 98,100 Commercial mortgage- backed securities 207,847 432 (1,809 ) 206,470 40,132 133 (325 ) 39,940 $ 3,494,356 $ 16,268 $ (18,302 ) $ 3,492,322 $ 3,471,735 $ 10,961 $ (11,340 ) $ 3,471,356 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 April 2, 2016 and March 28, 2015 . 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 April 2, 2016 and March 28, 2015 : April 2, 2016 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 $ 52,756 $ (230 ) $ — $ — $ 52,756 $ (230 ) Auction rate securities — — 9,977 (523 ) 9,977 (523 ) Municipal bonds 10,138 (44 ) 3,867 (89 ) 14,005 (133 ) U.S. government and agency securities 84,024 (71 ) — — 84,024 (71 ) Mortgage-backed securities 346,560 (3,916 ) 114,285 (1,464 ) 460,845 (5,380 ) Asset-backed securities 81,038 (502 ) 20,793 (103 ) 101,831 (605 ) Debt mutual funds — — 91,901 (9,449 ) 91,901 (9,449 ) Bank loans 34,358 (31 ) 42,832 (71 ) 77,190 (102 ) Commercial mortgage- backed securities 141,761 (878 ) 2,150 (931 ) 143,911 (1,809 ) $ 750,635 $ (5,672 ) $ 285,805 $ (12,630 ) $ 1,036,440 $ (18,302 ) March 28, 2015 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 $ 7,190 $ (6 ) $ — $ — $ 7,190 $ (6 ) Auction rate securities — — 10,312 (188 ) 10,312 (188 ) Municipal bonds 10,014 (94 ) 1,931 (58 ) 11,945 (152 ) U.S. government and agency securities 451,296 (129 ) — — 451,296 (129 ) Mortgage-backed securities 442,786 (2,901 ) 48,263 (1,270 ) 491,049 (4,171 ) Asset-backed securities 75,009 (159 ) — — 75,009 (159 ) Debt mutual fund 38,608 (1,392 ) 56,592 (4,758 ) 95,200 (6,150 ) Bank loans 65,085 (60 ) — — 65,085 (60 ) Commercial mortgage- backed securities 5,984 (268 ) 944 (57 ) 6,928 (325 ) $ 1,095,972 $ (5,009 ) $ 118,042 $ (6,331 ) $ 1,214,014 $ (11,340 ) As of April 2, 2016 , the gross unrealized losses that had been outstanding for less than twelve months were primarily related to mortgage-backed securities due to the general rising of the interest-rate environment, although the percentage of such losses to the total estimated fair value of the mortgage-backed securities was relatively insignificant. The gross unrealized losses that had been outstanding for more than twelve months were primarily related to debt mutual funds and mortgage-backed securities, which were primarily due to the general rising of the interest-rate environment and foreign currency movement. The Company reviewed the investment portfolio and determined that the gross unrealized losses on these investments as of April 2, 2016 and March 28, 2015 were temporary in nature as evidenced by the fluctuations in the gross unrealized losses within the investment categories. These investments are highly rated by the credit rating agencies and there have been no defaults on any of these securities, and we have received interest payments as they become due. Additionally, in the past several years a portion of the Company's investment in the auction rate securities and the mortgage-backed securities were 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 April 2, 2016 and March 28, 2015 . 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 Company also believes that it will be able to collect both principal and interest amounts due to the Company at maturity, given the high credit quality of these investments and any related underlying collateral. The amortized cost and estimated fair value of marketable debt securities (financial institution securities, non-financial institution securities, auction rate securities, municipal bonds, U.S. and foreign government and agency securities, mortgage-backed securities, asset-backed securities, bank loans and commercial mortgage-backed securities), by contractual maturity, are shown below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations without call or prepayment penalties. April 2, 2016 (In thousands) Amortized Estimated Due in one year or less $ 1,120,486 $ 1,120,487 Due after one year through five years 545,350 545,457 Due after five years through ten years 264,616 265,529 Due after ten years 1,229,856 1,236,250 $ 3,160,308 $ 3,167,723 As of April 2, 2016 , $1.92 billion of marketable debt securities with contractual maturities of greater than one year were classified as short-term investments. Additionally, the above table did not include investments in money market and mutual funds because these funds do not have specific contractual maturities. Certain information related to available-for-sale securities is as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Gross realized gains on sale of available-for-sale securities $ 1,248 $ 15,101 $ 2,080 Gross realized losses on sale of available-for-sale securities (878 ) (3,223 ) (2,412 ) Net realized gains (losses) on sale of available-for-sale securities $ 370 $ 11,878 $ (332 ) Amortization of premiums on available-for-sale securities $ 26,613 $ 23,579 $ 27,293 The cost of securities matured or sold is based on the specific identification method.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Apr. 02, 2016
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. As of April 2, 2016 and March 28, 2015 , the Company had the following outstanding forward currency exchange contracts (in notional amount), which were derivative financial instruments: (In thousands and U.S. dollars) April 2, 2016 March 28, 2015 Singapore Dollar $ 26,978 $ 43,901 Euro 19,123 29,973 Indian Rupee 23,302 22,228 British Pound 10,716 12,946 Japanese Yen 3,387 4,994 $ 83,506 $ 114,042 As part of the Company's strategy to reduce volatility of operating expenses due to foreign exchange rate fluctuations, the Company employs a hedging program with a forward outlook of up to two years for major foreign-currency-denominated operating expenses. The outstanding forward currency exchange contracts expire at various dates through May 2017 . The net unrealized losses, which approximate the fair market value of the outstanding forward currency exchange contracts, are expected to be recognized in the consolidated statements of income within the next two years . As of April 2, 2016 , all of the forward foreign currency exchange contracts were designated and qualified as cash flow hedges and the effective portion of the gain or loss on the forward contracts was reported as a component of other comprehensive income (loss) and reclassified into net income in the same period during which the hedged transaction affects earnings. The estimated amount of such gains or losses as of April 2, 2016 that is expected to be reclassified into earnings was not material. The ineffective portion of the gains or losses on the forward contracts was included in the net income for all periods presented. The Company may enter into forward foreign currency exchange contracts to hedge firm commitments such as acquisitions and capital expenditures. Gains and losses on foreign currency forward contracts that are designated as hedges of anticipated transactions, for which a firm commitment has been attained and the hedged relationship has been effective, are deferred and included in income or expenses in the same period that the underlying transaction is settled. Gains and losses on any instruments not meeting the above criteria are recognized in income or expenses in the consolidated statements of income as they are incurred. The Company had the following derivative instruments as of April 2, 2016 and March 28, 2015 , located on the consolidated balance sheet, utilized for risk management purposes detailed above: Foreign Exchange Contracts Asset Derivatives Liability Derivatives (In thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value April 2, 2016 Prepaid expenses and other current assets $ 2,161 Other accrued liabilities $ 1,417 March 28, 2015 Prepaid expenses and other current assets $ — Other accrued liabilities $ 9,320 The Company does not offset or net the fair value amounts of derivative financial instruments in its consolidated balance sheets. The potential effect of rights of set-off associated with the derivative financial instruments was not material to the Company's consolidated balance sheet for all periods presented. The following table summarizes the effect of derivative instruments on the consolidated statements of income for fiscal 2016 and 2015 : Foreign Exchange Contracts (In thousands) 2016 2015 Amount of losses recognized in other comprehensive income on derivative (effective portion of cash flow hedging) $ (7,779 ) $ (8,321 ) Amount of losses reclassified from accumulated other comprehensive income into income (effective portion) * $ (7,225 ) $ (2,753 ) Amount of gains recorded (ineffective portion) * $ 10 $ 43 * Recorded in Interest and Other Expense location within the consolidated statements of income.

Stock-Based Compensation Plans

Stock-Based Compensation Plans	12 Months Ended
	Apr. 02, 2016
Disclosure of Compensation Related Costs, Share-based Payments [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 ESPP: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Stock-based compensation included in: Cost of revenues $ 7,977 $ 8,101 $ 7,602 Research and development 59,692 50,185 46,197 Selling, general and administrative 44,315 40,994 40,515 Restructuring charges — 579 — Stock-based compensation effect on income before taxes 111,984 99,859 94,314 Income tax effect (34,119 ) (29,268 ) (27,327 ) Net stock-based compensation effect on net income $ 77,865 $ 70,591 $ 66,987 In accordance with the authoritative guidance on accounting for share-based payments, the Company adjusts stock-based compensation on a quarterly basis for changes to the estimate of expected equity award forfeitures based on actual forfeiture experience. The effect of adjusting the forfeiture rate for all expense amortization was recognized in the period the forfeiture estimate was changed, and was not material for all periods presented. As of April 2, 2016 and March 28, 2015 , the ending inventory balances included $2.0 million of capitalized stock-based compensation. During fiscal 2016 , 2015 and 2014 , the tax benefit realized for the tax deduction from option exercises and other awards, including amounts credited to additional paid-in capital, totaled $56.3 million , $55.0 million and $67.0 million , respectively. The fair values of stock options and stock purchase plan rights under the Company's equity incentive plans and ESPP were estimated as of the grant date using the Black-Scholes option pricing model. The Company's expected stock price volatility assumption is estimated using implied volatility of the Company's traded options. The expected life of options granted is based on the historical exercise activity as well as the expected disposition of all options outstanding. The expected life of options granted also considers the actual contractual term. The Company's stock-based compensation expense relating to options granted during fiscal 2016 , 2015 and 2014 were not material. The weighted-average fair value per share of stock purchase rights granted under the ESPP during fiscal 2016 , 2015 and 2014 were $11.20 , $9.17 and $11.11 , respectively. These fair values per share were estimated at the date of grant using the following weighted-average assumptions: Employee Stock Purchase Plan 2016 2015 2014 Expected life of options (years) 1.3 1.3 1.3 Expected stock price volatility 0.26 0.25 0.24 Risk-free interest rate 0.5 % 0.3 % 0.2 % Dividend yield 2.7 % 2.9 % 2.4 % The estimated fair values of restricted stock unit (RSU) awards 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 fiscal 2016 , 2015 and 2014 were $41.19 , $43.11 and $38.90 , respectively. The weighted average fair value of RSUs granted in fiscal 2016 , 2015 and 2014 were calculated based on estimates at the date of grant using the following weighted-average assumptions: 2016 2015 2014 Risk-free interest rate 1.3 % 0.8 % 0.7 % Dividend yield 2.8 % 2.5 % 2.5 % Options outstanding that have vested and are expected to vest in future periods as of April 2, 2016 are as follows: (Shares and intrinsic value in thousands) Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (1) Vested (i.e., exercisable) 1,241 $25.33 0.98 $ 27,653 Expected to vest 15 $31.74 1.73 $ 246 Total vested and expected to vest 1,256 $25.41 0.99 $ 27,899 Total outstanding 1,257 $25.42 0.99 $ 27,917 (1) These amounts represent the difference between the exercise price and $47.62 , the closing price per share of Xilinx's stock on April 2, 2016 , for all in-the-money options outstanding. Options outstanding that are expected to vest are net of estimated future option forfeitures in accordance with the authoritative guidance of accounting for share-based payment, which are estimated when compensation costs are recognized. Options with a fair value of $344 thousand completed vesting during fiscal 2016 . As of April 2, 2016 , total unrecognized stock-based compensation costs related to stock options and ESPP were $64 thousand and $12.9 million , respectively. The total unrecognized stock-based compensation cost for stock options and ESPP is expected to be recognized over a weighted-average period of 0.6 years and 0.8 years , respectively. Employee Stock Option Plans Under the Company's stock option plans (Option Plans), options reserved for future issuance of common shares to employees and directors of the Company total 14.2 million shares as of April 2, 2016 , including 12.9 million shares available for future grants under the 2007 Equity Incentive Plan (2007 Equity Plan). Options to purchase shares of the Company's common stock under the Option Plans are granted at 100% of the fair market value of the stock on the date of grant. The contractual term for stock awards granted under the 2007 Equity Plan is seven years from the grant date. Prior to April 1, 2007, stock options granted by the Company generally expire ten years from the grant date. Stock awards granted to existing and newly hired employees generally vest over a four -year period from the date of grant. A summary of shares available for grant under the 2007 Equity Plan is as follows: (Shares in thousands) Shares Available for Grant March 30, 2013 15,990 Additional shares reserved 2,000 Stock options granted (8 ) Stock options cancelled 26 RSUs granted (3,297 ) RSUs cancelled 326 March 29, 2014 15,037 Additional shares reserved 3,000 Stock options cancelled 6 RSUs granted (3,201 ) RSUs cancelled 531 March 28, 2015 15,373 Stock options cancelled 10 RSUs granted (3,088 ) RSUs cancelled 634 April 2, 2016 12,929 The types of awards allowed under the 2007 Equity Plan include incentive stock options, non-qualified stock options, RSUs, restricted stock and stock appreciation rights. To date, the Company has issued a mix of non-qualified stock options and RSUs under the 2007 Equity Plan. A summary of the Company's Option Plans activity and related information is as follows: Options Outstanding (Shares in thousands) Number of Shares Weighted-Average Exercise Price Per Share March 30, 2013 12,753 $28.01 Granted 8 $41.08 Exercised (7,421 ) $29.95 Forfeited/cancelled/expired (60 ) $35.61 March 29, 2014 5,280 $25.22 Granted — — Exercised (2,009 ) $25.80 Forfeited/cancelled/expired (24 ) $32.22 March 28, 2015 3,247 $24.81 Granted — — Exercised (1,977 ) $24.38 Forfeited/cancelled/expired (13 ) $32.10 April 2, 2016 1,257 $25.42 Options exercisable at: April 2, 2016 1,241 $25.33 March 28, 2015 3,173 $24.59 The total pre-tax intrinsic value of options exercised during fiscal 2016 and 2015 was $42.6 million and $37.3 million , respectively. This intrinsic value represents the difference between the exercise price and the fair market value of the Company's common stock on the date of exercise. Since the Company adopted the policy of retiring all repurchased shares of its common stock, new shares are issued upon employees' exercise of their stock options. The following information relates to options outstanding and exercisable under the Option Plans as of April 2, 2016 : Options Outstanding Options Exercisable Weighted- Weighted- Weighted- (Shares in thousands) Average Average Average Remaining Exercise Exercise Options Contractual Term Price Per Options Price Per Range of Exercise Prices Outstanding (Years) Share Exercisable Share $18.97 - $19.79 5 0.18 $19.22 5 $19.22 $20.57 - $29.27 1,105 0.76 $24.32 1,105 $24.32 $30.21 - $38.56 147 2.75 $33.90 131 $33.84 1,257 0.99 $25.42 1,241 $25.33 RSU Awards A summary of the Company's RSU activity and related information is as follows: RSUs Outstanding (Shares and intrinsic value in thousands) Number of Shares Weighted-Average Grant-Date Fair Value Per Share Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (1) March 30, 2013 5,996 $30.83 Granted 3,297 $38.90 Vested (2) (2,066 ) $29.25 Cancelled (326 ) $32.28 March 29, 2014 6,901 $35.08 Granted 3,201 $43.11 Vested (2) (2,698 ) $33.82 Cancelled (531 ) $32.91 March 28, 2015 6,873 $39.07 Granted 3,088 $41.19 Vested (2) (2,691 ) $37.23 Cancelled (592 ) $39.43 April 2, 2016 6,678 $40.74 2.31 $ 318,023 Expected to vest as of April 2, 2016 5,426 $40.71 2.31 $ 258,375 (1) Aggregate intrinsic value for RSUs represents the closing price per share of Xilinx's stock on April 2, 2016 of $47.62 , multiplied by the number of RSUs outstanding or expected to vest as of April 2, 2016 . (2) The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements. RSUs with a fair value of $100.2 million were vested during fiscal 2016 . As of April 2, 2016 , total unrecognized stock-based compensation costs related to non-vested RSUs was $179.7 million . The total unrecognized stock-based compensation cost for RSUs is expected to be recognized over a weighted-average period of 2.5 years . Employee Stock Purchase Plan Under the Company's ESPP, qualified employees can obtain a 24 -month purchase right to purchase the Company's common stock at the end of each six -month exercise period. Participation is limited to 15% of the employee's annual earnings up to a maximum of $21 thousand in a calendar year. Approximately 81% of all eligible employees participate in the ESPP. The purchase price of the stock is 85% of the lower of the fair market value at the beginning of the 24 -month offering period or at the end of each six -month exercise period. Employees purchased 1.1 million shares for $37.6 million in fiscal 2016 , 1.2 million shares for $39.0 million in fiscal 2015, and 1.2 million shares for $37.9 million in fiscal 2014. The next scheduled purchase under the ESPP is in the second quarter of fiscal 2017 . As of April 2, 2016 , 9.4 million shares were available for future issuance.

Balance Sheet Information

Balance Sheet Information	12 Months Ended
	Apr. 02, 2016
Payables and Accruals [Abstract]
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]	Balance Sheet Information The following tables disclose the current liabilities that individually exceed 5% of the respective consolidated balance sheet amounts in each fiscal year. Individual balances that are less than 5% of the respective consolidated balance sheet amounts are aggregated and disclosed as "other." (In thousands) 2016 2015 Accrued payroll and related liabilities: Accrued compensation $ 73,823 $ 79,312 Deferred compensation plan liability 74,180 70,163 Other 6,291 7,125 $ 154,294 $ 156,600 Other accrued liabilities: Interest payable $ 5,591 $ 5,432 Forward currency exchange contracts 1,417 9,320 Restructuring Charges 1,164 14,634 Other 36,936 35,290 $ 45,108 $ 64,676

Restructuring Charges

Restructuring Charges	12 Months Ended
	Apr. 02, 2016
Restructuring Charges [Abstract]
Restructuring Charges	Restructuring Charges During the fourth quarter of fiscal 2015, the Company announced restructuring measures designed to realign resources and drive overall operating efficiencies. These measures impacted approximately 120 positions, or 3% of the Company's global workforce, in various geographies and functions worldwide. The reorganization plan was substantially completed by the end of the first quarter of fiscal 2016. The Company recorded total restructuring charges of $24.5 million in the fourth quarter of fiscal 2015, primarily related to severance pay expenses and write-offs of acquisition-related intangibles. As of the end of fiscal 2016, the remaining balance of the restructuring accrual was $1.2 million , which is expected to be settled within the next few quarters.

Commitments

Commitments	12 Months Ended
	Apr. 02, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments	Commitments Xilinx leases some of its facilities and office buildings under non-cancelable operating leases that expire at various dates through October 2021 . 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. Approximate future minimum lease payments under non-cancelable operating leases are as follows: Fiscal (In thousands) 2017 $ 5,106 2018 3,138 2019 2,885 2020 2,078 2021 1,494 Thereafter 956 Total $ 15,657 Aggregate future rental income to be received, which includes rents from both owned and leased property, totaled $2.7 million as of April 2, 2016 . Rent expense, net of rental income, under all operating leases was $4.5 million for fiscal 2016 , $3.2 million for fiscal 2015 , and $3.1 million for fiscal 2014 . Rental income was not material for fiscal 2016 , 2015 or 2014 . Other commitments as of April 2, 2016 totaled $108.9 million and consisted of purchases of inventory and other non-cancelable purchase obligations related to subcontractors that manufacture silicon wafers and provide assembly and test services. The Company expects to receive and pay for these materials and services in the next three to six months, as the products meet delivery and quality specifications. As of April 2, 2016 , the Company had $33.8 million of non-cancelable license obligations to providers of electronic design automation software and hardware/software maintenance expiring at various dates through December 2018 . As of April 2, 2016 , the Company also had open purchase obligations totaling $15.0 million related to the renovation of one of its properties. The Company expects to receive and pay for these materials and services within the next six months.

Net Income Per Common Share

Net Income Per Common Share	12 Months Ended
	Apr. 02, 2016
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 the information on the consolidated statements of income, and there are no reconciling items in the numerator used to compute diluted net income per common share. The following table summarizes the computation of basic and diluted net income per common share: (In thousands, except per share amounts) 2016 2015 2014 Net income available to common stockholders $ 550,867 $ 648,216 $ 630,388 Weighted average common shares outstanding-basic 257,184 265,480 266,431 Dilutive effect of employee equity incentive plans 2,260 3,257 4,508 Dilutive effect of 2017 Convertible Notes and warrants 9,223 7,386 8,544 Dilutive effect of 2037 Convertible Notes — — 7,913 Weighted average common shares outstanding-diluted 268,667 276,123 287,396 Basic earnings per common share $ 2.14 $ 2.44 $ 2.37 Diluted earnings per common share $ 2.05 $ 2.35 $ 2.19 The total shares used in the denominator of the diluted net income per common share calculation includes potentially dilutive common equivalent shares outstanding that are not included in basic net income per common share by applying the treasury stock method to the impact of the equity incentive plans and to the incremental shares issuable assuming conversion of the Company's convertible debt and warrants (see "Note 13. Debt and Credit Facility" for more discussion of our debt and warrants). Outstanding stock options and RSUs under the Company's stock award plans to purchase approximately 4.6 million , 4.1 million and 5.1 million shares, for fiscal 2016 , 2015 or 2014 respectively, were excluded from diluted net income per common share by applying the treasury stock method, as their inclusion would have been antidilutive. These options and RSUs 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. To hedge against potential dilution upon conversion of the 2017 Convertible Notes, the Company also purchased call options on its common stock from the hedge counterparties. The call options give the Company the right to purchase up to 20.5 million shares of its common stock at $29.26 per share. These call options are not considered for purposes of calculating the total shares outstanding under the basic and diluted net income per share, as their effect would be anti-dilutive. Upon exercise, the call options would serve to neutralize the dilutive effect of the 2017 Convertible Notes and potentially reduce the weighted number of diluted shares used in per share calculations.

Interest and Other Expense, Net

Interest and Other Expense, Net	12 Months Ended
	Apr. 02, 2016
Other Income and Expenses [Abstract]
Interest and Other Expense, Net	Interest and Other Expense, Net The components of interest and other expense, net are as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Interest income $ 40,180 $ 35,876 $ 28,079 Interest expense (55,456 ) (55,431 ) (54,035 ) Other income (expense), net (17,780 ) 4,553 (3,597 ) $ (33,056 ) $ (15,002 ) $ (29,553 )

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Apr. 02, 2016
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Comprehensive 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 accumulated other comprehensive loss are as follows: (In thousands) 2016 2015 Accumulated unrealized losses on available-for-sale securities, net of tax $ (1,260 ) $ (238 ) Accumulated unrealized gains (losses) on hedging transactions, net of tax 256 (7,523 ) Accumulated cumulative translation adjustment, net of tax (5,627 ) (3,388 ) Accumulated other comprehensive loss $ (6,631 ) $ (11,149 ) The related tax effects of other comprehensive loss were not material for all periods presented.

Debt and Credit Facility

Debt and Credit Facility	12 Months Ended
	Apr. 02, 2016
Debt Disclosure [Abstract]
Debt and Credit Facility [Text Block]	Debt and Credit Facility 2017 Convertible Notes As of April 2, 2016 , the Company had $600.0 million principal amount of 2017 Convertible Notes outstanding. The 2017 Convertible Notes are senior in right of payment to the Company's existing and future unsecured indebtedness that is expressly subordinated in right of payment to the 2017 Convertible Notes, and are ranked equally with all of our other existing and future unsecured senior indebtedness, including the 2019 and 2021 Notes discussed below. The Company may not redeem the 2017 Convertible Notes prior to maturity. The 2017 Convertible Notes are convertible, subject to certain conditions, into shares of Xilinx common stock at a conversion rate of 34.1754 shares of common stock per $1 thousand principal amount of the 2017 Convertible Notes, representing an effective conversion price of approximately $29.26 per share of common stock. The conversion rate is subject to adjustment for certain events as outlined in the indenture governing the 2017 Convertible Notes but will not be adjusted for accrued interest. One of the conditions allowing holders of the 2017 Convertible Notes to convert during any fiscal quarter is if the last reported sale price of the Company's common stock for at least 20 trading days during a period of 30 consecutive trading days ending on the last trading day of the preceding fiscal quarter is greater than or equal to 130% of the conversion price on each applicable trading day. This condition was met as of April 2, 2016 and as a result, the 2017 Convertible Notes were convertible at the option of the holders. As of April 2, 2016 , the 2017 Convertible Notes were classified as a current liability on the Company's consolidated balance sheet. Additionally, a portion of the equity component attributable to the conversion feature of the 2017 Convertible Notes was classified in temporary stockholders' equity. The amount classified as temporary equity was equal to the difference between the principal amount and carrying value of the 2017 Convertible Notes. Upon conversion, the Company would pay the holders of the 2017 Convertible Notes cash up to the aggregate principal amount of the 2017 Convertible Notes. If the conversion value exceeds the principal amount, the Company would deliver shares of its common stock with respect to the remainder of its conversion obligation in excess of the aggregate principal amount (conversion spread). Accordingly, there is no adjustment to the numerator in the net income per common share computation for the cash settled portion of the 2017 Convertible Notes, as that portion of the debt liability will always be settled in cash. The conversion spread will be included in the denominator for the computation of diluted net income per common share, using the treasury stock method. The carrying values of the liability and equity components of the 2017 Convertible Notes are reflected in the Company's consolidated balance sheets as follows: (In thousands) 2016 2015 Liability component: Principal amount of the 2017 Convertible Notes $ 600,000 $ 600,000 Unamortized discount of liability component (18,135 ) (33,679 ) Hedge accounting adjustment – sale of interest rate swap 5,241 9,732 Net carrying value of the 2017 Convertible Notes $ 587,106 $ 576,053 Equity component (including temporary equity) – net carrying value $ 66,415 $ 66,415 The remaining unamortized debt discount, net of the hedge accounting adjustment from the sale of the interest rate swap, is being amortized as additional non-cash interest expense over the expected remaining term of the 2017 Convertible Notes. As of April 2, 2016 , the remaining term of the 2017 Convertible Notes is 1.2 years. As of April 2, 2016 , the if-converted value of the 2017 Convertible Notes was $970.0 million . Interest expense related to the 2017 Convertible Notes was included in interest and other expense, net on the consolidated statements of income as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Contractual coupon interest $ 15,750 $ 15,750 $ 15,750 Amortization of debt issuance costs 1,448 1,448 1,448 Amortization of debt discount, net 11,052 11,052 11,052 Total interest expense related to the 2017 Convertible Notes $ 28,250 $ 28,250 $ 28,250 To hedge against potential dilution upon conversion of the 2017 Convertible Notes, the Company also purchased call options on its common stock from the hedge counterparties. The call options give the Company the right to purchase up to 20.5 million shares of its common stock at $29.26 per share. The call options will terminate upon the earlier of the maturity of the 2017 Convertible Notes or the last day any of the 2017 Convertible Notes remain outstanding. To reduce the hedging cost, under separate transactions the Company sold warrants to the hedge counterparties, which give the hedge counterparties the right to purchase up to 20.5 million shares of the Company's common stock at $41.45 per share. These warrants expire on a gradual basis over a specified period starting on September 13, 2017. 2019 and 2021 Notes On March 12, 2014, the Company issued $500.0 million principal amount of 2019 Notes and $500.0 million principal amount of 2021 Notes with maturity dates of March 15, 2019 and March 15, 2021 respectively. The 2019 and 2021 Notes were offered to the public at a discounted price of 99.477% and 99.281% of par, respectively. Interest on the 2019 and 2021 Notes is payable semiannually on March 15 and September 15. The Company received net proceeds of $990.1 million from issuance of the 2019 and 2021 Notes, after the debt discounts and deduction of debt issuance costs. The debt discounts and issuance costs are amortized to interest expense over the lives of the 2019 and 2021 Notes. The following table summarizes the carrying value of the 2019 and 2021 Notes in the Company's consolidated balance sheets: (In thousands) 2016 2015 Principal amount of the 2019 Notes $ 500,000 $ 500,000 Unamortized discount of the 2019 Notes (1,560 ) (2,073 ) Principal amount of the 2021 Notes 500,000 500,000 Unamortized discount of the 2021 Notes (2,605 ) (3,088 ) Total senior notes $ 995,835 $ 994,839 Interest expense related to the 2019 and 2021 Notes was included in interest and other expense, net on the consolidated statements of income as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Contractual coupon interest $ 25,625 $ 25,625 $ 1,210 Amortization of debt issuance costs 586 586 52 Amortization of debt discount, net 995 970 80 Total interest expense related to the 2019 and 2021 Notes $ 27,206 $ 27,181 $ 1,342 2037 Convertible Notes On March 12, 2014, the Company paid $1.23 billion in cash to redeem all of the outstanding $689.6 million (principal amount) of its 2037 Convertible Notes. In accordance with the authoritative guidance for convertible debentures issued by the FASB, the redemption payment was allocated between the liability ( $377.6 million ) and equity ( $856.5 million ) components of the convertible debentures, using the equivalent rate that reflected the borrowing rate for a similar non-convertible debt prior to the redemption. As a result, the Company recognized a loss on extinguishment of convertible debentures of $9.8 million , net of the unamortized debt discount ( $315.4 million ), the write-off of the unamortized debt issuance costs ( $5.1 million ) and unamortized embedded derivative valuation ( $1.3 million ). Prior to the redemption, interest expense related to the 2037 Convertible Notes was included in interest and other expense, net on the consolidated statements of income, and was recognized as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Contractual coupon interest $ — $ — $ 20,065 Amortization of debt issuance costs — — 223 Amortization of embedded derivative — — 58 Amortization of debt discount — — 5,187 Fair value adjustment of embedded derivative — — (1,090 ) Total interest expense related to the 2037 Convertible Notes $ — $ — $ 24,443 Revolving Credit Facility On December 7, 2011 , the Company entered into a $250.0 million senior unsecured revolving credit facility with a syndicate of banks (expiring in December 2016 ). 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 non-financial covenants. As of April 2, 2016 , the Company had made no borrowings under this credit facility and was not in violation of any of the covenants.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Apr. 02, 2016
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders' Equity Preferred Stock The Company's Certificate of Incorporation authorized 2.0 million shares of undesignated preferred stock. The preferred stock may be issued in one or more series. The Board of Directors is authorized to determine or alter the rights, preferences, privileges and restrictions granted to, or imposed upon, any wholly unissued series of preferred stock. As of April 2, 2016 and March 28, 2015 , no preferred shares were issued or outstanding. Common Stock and Debentures Repurchase Programs The Board of Directors has approved stock repurchase programs enabling the Company to repurchase its common stock in the open market or through negotiated transactions with independent financial institutions. In November 2014, the Board authorized the repurchase of an additional $800.0 million of the Company's common stock (2014 Repurchase Program). The 2014 Repurchase Program has no stated expiration date. Through April 2, 2016 , the Company has used up $595.8 million of the $800.0 million authorized under the 2014 Repurchase Program, leaving $204.2 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 April 2, 2016 and March 28, 2015 . During fiscal 2016 , the Company repurchased 9.7 million shares of common stock in the open market for a total of approximately $443.2 million under the 2014 Repurchase Programs. During fiscal 2015 , the Company repurchased 15.3 million shares of common stock in the open market for a total of $650.0 million .

Income Taxes

Income Taxes	12 Months Ended
	Apr. 02, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes consists of the following: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Federal: Current $ 21,366 $ 61,308 $ 16,692 Deferred 42,146 17,121 48,021 63,512 78,429 64,713 State: Current 2,447 3,330 1,333 Deferred 1,781 1,803 5,954 4,228 5,133 7,287 Foreign: Current 18,016 9,433 7,264 Deferred 202 (1,135 ) (126 ) 18,218 8,298 7,138 Total $ 85,958 $ 91,860 $ 79,138 The domestic and foreign components of income before income taxes were as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Domestic $ 37,568 $ 110,881 $ 83,617 Foreign 599,257 629,195 625,909 Income before income taxes $ 636,825 $ 740,076 $ 709,526 The tax benefits associated with stock-based compensation recorded in additional paid-in capital were $11.4 million , $13.9 million and $26.4 million , for fiscal 2016 , 2015 and 2014 , respectively. As of April 2, 2016 , the Company had federal and state net operating loss carryforwards of approximately $15.4 million . If unused, these carryforwards will expire at various dates through fiscal 2030 . All of the federal and state net operating loss carryforwards are subject to change of ownership limitations provided by the Internal Revenue Code and similar state provisions. The Company had state research tax credit carryforwards of approximately $167.5 million . The credits have no expiration date. Some of the state credit carryforwards are subject to change of ownership limitations provided by state provisions similar to that of the Internal Revenue Code. The state credit carryforwards include $95.7 million that is not likely to be recovered and has been reduced by a valuation allowance. Unremitted foreign earnings that are considered to be permanently invested outside the U.S., and on which no U.S. taxes have been provided, are approximately $3.10 billion as of April 2, 2016 . The residual U.S. tax liability, if such amounts were remitted, would be approximately $1.04 billion . The provision for income taxes reconciles to the amount derived by applying the Federal statutory income tax rate to income before provision for taxes as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Income before provision for taxes $ 636,825 $ 740,076 $ 709,526 Federal statutory tax rate 35 % 35 % 35 % Computed expected tax 222,889 259,027 248,334 State taxes, net of federal benefit 3,177 2,458 4,664 Foreign earnings at lower tax rates (112,942 ) (141,372 ) (143,336 ) Tax credits (25,211 ) (26,633 ) (23,389 ) Other (1,955 ) (1,620 ) (7,135 ) Provision for income taxes $ 85,958 $ 91,860 $ 79,138 The Company has manufacturing operations in Singapore where the Company has been granted "Pioneer Status" that is effective through fiscal 2021. The Pioneer Status reduces the Company's tax on the majority of Singapore income from 17% to zero percent. The benefits of Pioneer Status in Singapore for fiscal 2016 , fiscal 2015 and fiscal 2014 were approximately $51.3 million ( $0.19 per diluted share), $66.0 million ( $0.24 per diluted share), and $60.3 million ( $0.21 per diluted share), respectively, on income considered permanently reinvested outside the U.S. The tax effect of operations in low tax jurisdictions on the Company's overall tax rate is reflected in the table above. The major components of deferred tax assets and liabilities consisted of the following as of April 2, 2016 and March 28, 2015 : (In thousands) 2016 2015 Deferred tax assets: Stock-based compensation $ 22,128 $ 18,233 Deferred income on shipments to distributors 9,307 9,207 Accrued expenses 32,771 28,318 Tax credit carryforwards 95,424 86,650 Deferred compensation plan 27,412 26,079 Low income housing and other investments 8,265 10,247 Other 11,538 10,706 Subtotal 206,845 189,440 Valuation allowance (62,179 ) (52,552 ) Total deferred tax assets 144,666 136,888 Deferred tax liabilities: Unremitted foreign earnings (335,522 ) (280,322 ) Convertible debt (2,349 ) (3,220 ) Other (1,699 ) (3,987 ) Total deferred tax liabilities (339,570 ) (287,529 ) Total net deferred tax liabilities $ (194,904 ) $ (150,641 ) In November 2015, the FASB issued authoritative guidance which requires companies to classify all deferred tax assets and liabilities as non-current on the balance sheet instead of separating deferred taxes into current and non-current amounts. The Company has adopted this guidance in the fourth quarter of fiscal year 2016 on a prospective basis. As a result, the Company's 2016 current deferred tax assets were reclassified and netted with non-current deferred tax assets or deferred tax liabilities, depending on the tax jurisdiction. Long-term deferred tax assets of $66.6 million and $59.7 million as of April 2, 2016 and March 28, 2015 , respectively, were included in other assets on the consolidated balance sheet. As of April 2, 2016 and March 28, 2015 , gross deferred tax assets were offset by valuation allowances of $62.2 million and $52.6 million , respectively, which were associated with state tax credit carryforwards. The aggregate changes in the balance of gross unrecognized tax benefits for fiscal 2016 and 2015 were as follows: (In thousands) 2016 2015 Balance as of beginning of fiscal year $ 30,089 $ 26,398 Increases in tax positions for prior years 786 97 Decreases in tax positions for prior years (606 ) (37 ) Increases in tax positions for current year 4,757 4,822 Settlements (85 ) — Lapses in statutes of limitation (942 ) (1,191 ) Balance as of end of fiscal year $ 33,999 $ 30,089 If the remaining balance of $34.0 million and $30.1 million of unrecognized tax benefits as of April 2, 2016 and March 28, 2015 , respectively, were realized in a future period, it would result in a tax benefit of $15.3 million and $12.5 million , respectively, thereby reducing the effective tax rate. The Company's policy is to include interest and penalties related to income tax liabilities within the provision for income taxes on the consolidated statements of income. The balances of accrued interest and penalties recorded in the consolidated balance sheets and the amounts of interest and penalties included in the Company's provisions for income taxes were not material for any period presented. The Company is no longer subject to U.S. federal or Ireland audits by taxing authorities for years through fiscal 2011. The Company is no longer subject to U.S. state audits for years through fiscal 2010. The Company has been subject to examination by the IRS for fiscal 2012 through 2014. During the fourth quarter of fiscal 2016, the IRS completed its fieldwork and issued a Revenue Agent Report. The case has been moved forward to the Joint Committee on Taxation for review. As a result, the audit remains officially open until such review is completed. The Company believes its provision for unrecognized tax benefits is adequate for adjustments that may result from tax audits. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company's tax audits are resolved in a manner not consistent with management's expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs. 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 audits and their possible outcomes, an estimate of the range of increase or decrease that could occur in the next twelve months cannot be made at this time.

Segment Information

Segment Information	12 Months Ended
	Apr. 02, 2016
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. Geographic revenue information for fiscal 2016 , 2015 and 2014 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. Long-lived assets include property, plant and equipment, which were based on the physical location of the asset as of the end of each fiscal year. Net revenues by geographic region were as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 North America: United States $ 592,422 $ 625,434 $ 610,276 Other 118,240 112,900 97,416 Total North America 710,662 738,334 707,692 Asia Pacific: China 520,562 573,007 564,814 Other 335,304 357,598 375,013 Total Asia Pacific 855,866 930,605 939,827 Europe 424,685 477,102 519,829 Japan 222,668 231,303 215,183 Worldwide total $ 2,213,881 $ 2,377,344 $ 2,382,531 Net long-lived assets by country at fiscal year-ends were as follows: (In thousands) 2016 2015 2014 United States $ 191,400 $ 195,353 $ 237,229 Foreign: Ireland 43,011 46,216 48,043 Singapore 36,029 43,020 51,569 Other 12,906 16,449 18,248 Total foreign 91,946 105,685 117,860 Worldwide total $ 283,346 $ 301,038 $ 355,089

Litigation Settlements and Cont

Litigation Settlements and Contingencies	12 Months Ended
	Apr. 02, 2016
Loss Contingency [Abstract]
Litigation Settlements and Contingencies	Litigation Settlements and Contingencies Patent Litigation On November 7, 2014, the Company filed a complaint for declaratory judgment against Papst Licensing GmbH & Co., KG (Papst) in the U.S. District Court for the Northern District of California (Xilinx, Inc. v. Papst Licensing GmbH & Co., KG, Case No. 3:14-CV-04963) (the California Action). On the same date, a patent infringement lawsuit was filed by Papst against the Company in the U.S. District Court for the District of Delaware (Papst Licensing GmbH & Co., KG v. Xilinx, Inc., Case No. 1:14-CV-01376) (the Delaware Action). Both the California Action and the Delaware Action pertain to the same two patents. In the Delaware Action, Papst seeks unspecified damages, interest and costs. On July 9, 2015, the Court in the California Action granted Papst's motion to dismiss for lack of personal jurisdiction, and the California Action was dismissed. The Company has appealed the decision dismissing in the California Action. On September 1, 2015, the Court in the Delaware Action granted the Company's motion to transfer the Delaware Action to the U.S. District Court for the Northern District of California (Papst Licensing GmbH & Co., KG v. Xilinx, Inc., Case No. 3:16-cv-00925-EDL). The Company is unable to estimate its range of possible loss, if any, in this matter at this time. On July 17, 2014, a patent infringement lawsuit was filed by PLL Technologies, Inc. (PTI) against the Company in the U.S. District Court for the District of Delaware (PLL Technologies, Inc. v. Xilinx, Inc., Case No. 1:14-CV-00945). On April 28, 2015, the United States Patent Trial and Appeal Board granted Xilinx's request for inter partes review (IPR) with respect to all claims in the litigation. On May 5, 2015, the Court ordered the litigation be stayed pending final resolution of the IPR. The lawsuit pertains to one patent and PTI seeks unspecified damages, interest and costs. The Company is unable to estimate its range of possible loss, if any, in this matter at this time. On May 22, 2015, a patent infringement lawsuit was filed by QuickCompile IP, LLC (QuickCompile) against the Company in the U.S. District Court for the Eastern District of Texas (QuickCompile IP, LLC v. Xilinx, Inc., Case No. 2:15-CV-00820). On April 20, 2016, the parties entered into a settlement agreement pursuant to which the parties entered into a mutual release of claims that included QuickCompile absolutely discharging the Company, its affiliates, and covered third parties from any and all claims, including those before the effective date of the proposed settlement, that arise from or relate to in any way the patents at issue. QuickCompile also granted the Company, its affiliates and covered third parties an irrevocable, perpetual, fully-paid, royalty-free, worldwide license under the patents. The Company did not make any payment to QuickCompile for the license, but the parties acknowledged an agreement involving the patents between QuickCompile and RPX Corporation. On April 21, 2016, the U.S. District Court for the Eastern District of Texas issued an order dismissing the suit with prejudice. The Company intends to continue to protect and defend our 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. The Court has not yet adjudicated either motion. The Company is unable to estimate its range of possible loss, if any, in this matter at this time. 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	12 Months Ended
	Apr. 02, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Acquisition-Related Intangibles	Goodwill and Acquisition-Related Intangibles As of April 2, 2016 and March 28, 2015 , the gross and net amounts of goodwill and of acquisition-related intangibles for all acquisitions were as follows: Weighted-Average (In thousands) 2016 2015 Amortization Life Goodwill $ 159,296 $ 159,296 Core technology, gross 77,640 77,640 5.6 years Less accumulated amortization (71,472 ) (64,988 ) Core technology, net 6,168 12,652 Other intangibles, gross 46,606 46,606 2.7 years Less accumulated amortization (46,572 ) (46,506 ) Other intangibles, net 34 100 Total acquisition-related intangibles, gross 124,246 124,246 Less accumulated amortization (118,044 ) (111,494 ) Total acquisition-related intangibles, net $ 6,202 $ 12,752 Amortization expense for acquisition-related intangibles for fiscal 2016 , 2015 and 2014 were $6.6 million , $9.5 million and $9.9 million , respectively. Based on the carrying value of acquisition-related intangibles recorded as of April 2, 2016 , and assuming no subsequent impairment of the underlying assets, the annual amortization expense for acquisition-related intangibles is expected to be as follows: Fiscal (In thousands) 2017 $ 4,761 2018 1,374 2019 67 Total $ 6,202

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Apr. 02, 2016
Postemployment Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans Xilinx offers various retirement benefit plans for U.S. and non-U.S. employees. Total contributions to these plans were $11.0 million , $13.0 million and $13.2 million in fiscal 2016 , 2015 and 2014 , respectively. For employees in the U.S., Xilinx instituted a Company matching program pursuant to which the Company will match contributions to Xilinx's 401(k) Plan (the 401(k) Plan) based on the amount of salary deferral contributions the participant makes to the 401(k) Plan. Xilinx will match up to 50% of the first 8% of an employee's compensation that the employee contributed to their 401(k) account. The maximum Company contribution per year is $4,500 per employee. As permitted under Section 401(k) of the Internal Revenue Code, the 401(k) Plan allows tax deferred salary deductions for eligible employees. The Compensation Committee of the Board of Directors administers the 401(k) Plan. Participants in the 401(k) Plan may make salary deferrals of up to 25% of the eligible annual salary, limited by the maximum dollar amount allowed by the Internal Revenue Code. Participants who have reached the age of 50 before the close of the plan year may be eligible to make catch-up salary deferral contributions, up to 25% of eligible annual salary, limited by the maximum dollar amount allowed by the Internal Revenue Code. The Company allows its U.S.-based officers, director-level employees and its board members to defer a portion of their compensation under the Deferred Compensation Plan (the Plan). The Compensation Committee administers the Plan. As of April 2, 2016 , there were more than 187 participants in the Plan who self-direct their contributions into investment options offered by the Plan. The Plan does not allow Plan participants to invest directly in Xilinx's stock. In the event Xilinx becomes insolvent, Plan assets are subject to the claims of the Company's general creditors. There are no Plan provisions that provide for any guarantees or minimum return on investments. As of April 2, 2016 , Plan assets were $67.0 million and obligations were $74.2 million . As of March 28, 2015 , Plan assets were $59.2 million and obligations were $70.2 million .

Subsequent Event

Subsequent Event	12 Months Ended
	Apr. 02, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On April 26, 2016, the Company's Board of Directors declared a cash dividend of $0.33 per common share for the first quarter of fiscal 2017. The dividend is payable on June 8, 2016 to stockholders of record as of May 18, 2016. On May 16, 2016, the Company's Board of Directors granted an authorization for the Company to repurchase up to $1.00 billion of its debt and equity securities.

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Apr. 02, 2016
Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	XILINX, INC. SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (In thousands) Description Beginning Additions Deductions End of Year For the year ended March 29, 2014: Allowance for doubtful accounts $ 3,425 $ 2 $ 72 $ 3,355 Allowance for deferred tax assets $ 26,401 $ 19,771 $ 3,168 $ 43,004 For the year ended March 28, 2015: Allowance for doubtful accounts $ 3,355 $ — $ 2 $ 3,353 Allowance for deferred tax assets $ 43,004 $ 10,623 $ 1,075 $ 52,552 For the year ended April 2, 2016: Allowance for doubtful accounts $ 3,353 $ — $ 12 $ 3,341 Allowance for deferred tax assets $ 52,552 $ 9,834 $ 207 $ 62,179 Supplementary Financial Data Quarterly Data (Unaudited) (In thousands, except per share amounts) Year ended April 2, 2016 (1) First Second Third Fourth Net revenues $ 549,008 $ 527,572 $ 566,235 $ 571,066 Gross margin 389,054 369,932 387,721 395,267 Income before income taxes 167,967 143,969 155,051 169,838 Net income 147,715 127,298 130,819 145,035 Net income per common share: (2) Basic $ 0.57 $ 0.49 $ 0.51 $ 0.57 Diluted $ 0.55 $ 0.48 $ 0.49 $ 0.54 Shares used in per share calculations: Basic 258,021 257,640 256,450 255,467 Diluted 270,730 266,046 269,611 268,462 Cash dividends declared per common share $ 0.31 $ 0.31 $ 0.31 $ 0.31 (1) Xilinx uses a 52 - to 53 -week fiscal year ending on the Saturday nearest March 31. Fiscal 2016 was a 53-week year and each quarter was a 13 -week quarter except the third quarter, which was a 14-week quarter. (2) Net income per common share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per common share information may not equal the annual net income per common share. (In thousands, except per share amounts) Year ended March 28, 2015 (1) First Second Third Fourth Net revenues $ 612,633 $ 604,262 $ 593,549 $ 566,900 Gross margin 423,444 434,645 413,911 396,521 Income before income taxes (2) 200,278 194,318 186,002 159,478 Net income 173,611 171,516 168,466 134,623 Net income per common share: (3) Basic $ 0.65 $ 0.64 $ 0.64 $ 0.52 Diluted $ 0.62 $ 0.62 $ 0.62 $ 0.50 Shares used in per share calculations: Basic 267,648 265,942 262,881 260,857 Diluted 281,579 275,800 273,795 269,514 Cash dividends declared per common share $ 0.29 $ 0.29 $ 0.29 $ 0.29 (1) Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2015 was a 52-week year and each quarter was a 13-week quarter. (2) Income before income taxes for the fourth quarter of fiscal 2015 included restructuring charges of $24,491 . (3) Net income per common share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per common share information may not equal the annual net income per common share.

Summary of Significant Accoun30

Summary of Significant Accounting Policies and Concentrations of Risk (Policies)	12 Months Ended
	Apr. 02, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and Concentrations of Risk	Summary of Significant Accounting Policies and Concentrations of Risk Basis of Presentation The accompanying consolidated financial statements include the accounts of Xilinx and its wholly-owned subsidiaries after elimination of all intercompany transactions. The Company uses a 52 - to 53 -week fiscal year ending on the Saturday nearest March 31. Fiscal 2016 was a 53-week year ended on April 2, 2016 . Each of Fiscal 2015 and 2014 was a 52-week year, ended on March 28, 2015 and March 29, 2014 , respectively. Fiscal 2017 will be a 52-week year ending on April 1, 2017 . Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements and the reported amounts of net revenues and expenses during the reporting period. Such estimates relate to, among others, the useful lives of assets, assessment of recoverability of property, plant and equipment, long-lived assets and goodwill, inventory write-downs, allowances for doubtful accounts, customer returns, deferred tax assets, stock-based compensation, potential reserves relating to litigation and tax matters, valuation of certain investments and derivative financial instruments as well as other accruals or reserves. Actual results may differ from those estimates and such differences may be material to the financial statements. Cash Equivalents and Investments Cash equivalents consist of highly liquid investments with original maturities from the date of purchase of three months or less. These investments consist of money market funds, non-financial institution securities, U.S. and foreign government and agency securities, municipal bonds and financial institution securities. Short-term investments consist of mortgage-backed securities, non-financial institution securities, U.S. and foreign government and agency securities, financial institution securities, asset-backed securities, bank loans, a debt mutual fund and municipal bonds with original maturities greater than three months and remaining maturities less than one year from the balance sheet date. Long-term investments consist of mortgage-backed securities, a debt mutual fund, auction rate securities, municipal bonds and asset-backed securities with remaining maturities greater than one year, unless the investments are specifically identified to fund current operations, in which case they are classified as short-term investments. As of April 2, 2016 and March 28, 2015 , long-term investments also included approximately $10.0 million and $10.3 million , respectively, of auction rate securities that experienced failed auctions in the fourth quarter of fiscal 2008. These auction rate securities are secured primarily by pools of student loans originated under Federal Family Education Loan Program that are substantially guaranteed by the U. S. Department of Education. Equity investments are also classified as long-term investments since they are not intended to fund current operations. The Company maintains its cash balances with various banks with high quality ratings, and with investment banking and asset management institutions. The Company manages its liquidity risk by investing in a variety of money market funds, high-grade commercial paper, corporate bonds, municipal bonds, U.S. and foreign government and agency securities, asset-backed securities, mortgage-backed securities, bank loans and debt mutual funds. This diversification of investments is consistent with its policy to maintain liquidity and ensure the ability to collect principal. The Company maintains an offshore investment portfolio denominated in U.S. dollars. All investments are made pursuant to corporate investment policy guidelines. Investments include Euro commercial paper, Euro dollar bonds, Euro dollar floating rate notes, offshore time deposits, U.S. and foreign government and agency securities, asset-backed securities, bank loans and mortgage-backed securities issued by U.S. government-sponsored enterprises and agencies. Management classifies investments as available-for-sale or held-to-maturity at the time of purchase and re-evaluates such designation at each balance sheet date, although classification is not generally changed. Securities are classified as held-to-maturity when the Company has the positive intent and the ability to hold the securities until maturity. Held-to-maturity securities are carried at cost adjusted for amortization of premiums and accretion of discounts to maturity. Such amortization, as well as any interest on the securities, is included in interest income. No investments were classified as held-to-maturity as of April 2, 2016 or March 28, 2015 . Available-for-sale securities are carried at fair value with the unrealized gains or losses, net of tax, included as a component of accumulated other comprehensive income (loss) in stockholders' equity. See "Note 3. Fair Value Measurements" for information relating to the determination of fair value. Realized gains and losses on available-for-sale securities are included in interest and other expense, net, and declines in value judged to be other than temporary are included in impairment loss on investments. In determining if and when a decline in value below the adjusted cost of marketable debt and equity securities is other than temporary, we evaluate on an ongoing basis the market conditions, trends of earnings, financial condition, credit ratings, any underlying collateral and other key measures for our investments. The cost of securities matured or sold is based on the specific identification method. In determining whether a decline in value of non-marketable equity investments in private companies is other than temporary, the assessment is made by considering available evidence including the general market conditions in the investee's industry, the investee's product development status, the investee's ability to meet business milestones and the financial condition and near-term prospects of the individual investee, including the rate at which the investee is using its cash, the investee's need for possible additional funding at a lower valuation and bona fide offers to purchase the investee from a prospective acquirer. When a decline in value is deemed to be other than temporary, the Company recognizes an impairment loss in the current period's operating results to the extent of the decline. Accounts Receivable The allowance for doubtful accounts reflects the Company's best estimate of probable losses inherent in the accounts receivable balance. The Company determines the allowance based on the aging of Xilinx's accounts receivable, historical experience, known troubled accounts, management judgment and other currently available evidence. Xilinx writes off accounts receivable against the allowance when Xilinx determines a balance is uncollectible and no longer actively pursues collection of the receivable. The amounts of accounts receivable written off were insignificant for all periods presented. 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) April 2, 2016 March 28, 2015 Raw materials $ 15,346 $ 14,174 Work-in-process 123,675 183,472 Finished goods 39,529 33,682 $ 178,550 $ 231,328 The Company reviews and sets standard costs quarterly to approximate current actual manufacturing costs. The Company's manufacturing overhead standards for product costs are calculated assuming full absorption of actual spending over actual volumes. Given the cyclicality of the market, the obsolescence of technology and product lifecycles, the Company writes down inventory based on forecasted demand and technological obsolescence. These forecasts are developed based on inputs from the Company's customers, including bookings and extended but uncommitted demand forecasts, and internal analyses such as customer historical purchasing trends and actual and anticipated design wins, as well as market and economic conditions, technology changes, new product introductions and changes in strategic direction. These factors require estimates that may include uncertain elements. The estimates of future demand that the Company uses in the valuation of inventory are the basis for its published revenue forecasts, which are also consistent with our short-term manufacturing plans. The differences between the Company's demand forecast and the actual demand in the recent past have not resulted in any material write down in the Company's inventory. If the Company's demand forecast for specific products is greater than actual demand and the Company fails to reduce manufacturing output accordingly, the Company could be required to write down additional inventory, which would have a negative impact on the Company's gross margin. Property, Plant and Equipment Property, plant and equipment are recorded at cost, net of accumulated depreciation. Depreciation for financial reporting purposes is computed using the straight-line method over the estimated useful lives of the assets of three to five years for machinery, equipment, furniture and fixtures and 15 to 30 years for buildings. Depreciation expense totaled $50.8 million , $55.3 million and $55.5 million for fiscal 2016 , 2015 and 2014 , respectively. Impairment of Long-Lived Assets The Company evaluates the carrying value of long-lived assets and certain identifiable intangible assets to be held and used for impairment if indicators of potential impairment exist. Impairment indicators are reviewed on a quarterly basis. When indicators of impairment exist and assets are held for use, the Company estimates future undiscounted cash flows attributable to the assets. In the event such cash flows are not expected to be sufficient to recover the recorded value of the assets, the assets are written down to their estimated fair values based on the expected discounted future cash flows attributable to the assets or based on appraisals. When assets are removed from operations and held for sale, Xilinx estimates impairment losses as the excess of the carrying value of the assets over their fair value. See "Note 8. Restructuring Charges" for more information about the Company's write-offs of acquisition-related intangibles recorded in fiscal 2015. Goodwill Goodwill is not amortized but is subject to impairment tests on an annual basis, or more frequently if indicators of potential impairment exist, using a fair-value-based approach. Based on the impairment review performed during the fourth quarter of fiscal 2016 , there was no impairment of goodwill in fiscal 2016 . Unless there are indicators of impairment, the Company's next impairment review for goodwill will be performed and completed in the fourth quarter of fiscal 2017 . To date, no impairment indicators have been identified. Revenue Recognition Sales to distributors are made under agreements providing distributor price adjustments and rights of return under certain circumstances. Revenue and costs relating to distributor sales are deferred until products are sold by the distributors to the distributors' end customers. For fiscal 2016 , approximately 60% of the Company's net revenues were from products sold to distributors for subsequent resale to OEMs or their subcontract manufacturers. Revenue recognition depends on notification from the distributor that product has been sold to the distributor's end customer. Also reported by the distributor are product resale price, quantity and end customer shipment information, as well as inventory on hand. Reported distributor inventory on hand is reconciled to deferred revenue balances monthly. The Company maintains system controls to validate distributor data and to verify that the reported information is accurate. Deferred income on shipments to distributors reflects the estimated effects of distributor price adjustments and the amount of gross margin expected to be realized when distributors sell through product purchased from the Company. Accounts receivable from distributors are recognized and inventory is relieved when title to inventories transfers, typically upon shipment from Xilinx at which point the Company has a legally enforceable right to collection under normal payment terms. As of April 2, 2016 , the Company had $70.9 million of deferred revenue and $19.1 million of deferred cost of revenues recognized as a net $51.8 million of deferred income on shipments to distributors. As of March 28, 2015 , the Company had $87.7 million of deferred revenue and $21.6 million of deferred cost of revenues recognized as a net $66.1 million of deferred income on shipments to distributors. The deferred income on shipments to distributors that will ultimately be recognized in the Company's consolidated statement of income will be different than the amount shown on the consolidated balance sheet due to actual price adjustments issued to the distributors when the product is sold to their end customers. Revenue from sales to the Company's direct customers is recognized upon shipment provided that persuasive evidence of a sales arrangement exists, the price is fixed or determinable, title has transferred, collection of resulting receivables is reasonably assured, and there are no customer acceptance requirements and no remaining significant obligations. For each of the periods presented, there were no significant acceptance provisions with the Company's direct customers. Revenue from software licenses is deferred and recognized as revenue over the term of the licenses of one year. Revenue from support services is recognized when the service is performed. Revenue from Support Products, which includes software and services sales, was less than 5% of net revenues for all of the periods presented. Allowances for end customer sales returns are recorded based on historical experience and for known pending customer returns or allowances. Foreign Currency Translation The U.S. dollar is the functional currency for the Company's Ireland and Singapore subsidiaries. Monetary assets and liabilities that are not denominated in the functional currency are remeasured into U.S. dollars, and the resulting gains or losses are included in the consolidated statements of income under interest and other expense, net. The remeasurement gains or losses were immaterial for all fiscal periods presented. The local currency is the functional currency for each of the Company's other wholly-owned foreign subsidiaries. Assets and liabilities are translated from foreign currencies into U.S. dollars at month-end exchange rates and statements of income are translated at the average monthly exchange rates. Exchange gains or losses arising from translation of foreign currency denominated assets and liabilities (i.e., cumulative translation adjustment) are included as a component of accumulated other comprehensive income (loss) in stockholders' equity. Derivative Financial Instruments To reduce financial risk, the Company periodically enters into financial arrangements as part of the Company's ongoing asset and liability management activities. Xilinx uses derivative financial instruments to hedge fair values of underlying assets and liabilities or future cash flows which are exposed to foreign currency or commodity price fluctuations. The Company does not enter into derivative financial instruments for trading or speculative purposes. See "Note 5. Derivative Financial Instruments" for detailed information about the Company's derivative financial instruments. Research and Development Expenses Research and development costs are current period expenses and charged to expense as incurred. Stock-Based Compensation The Company has equity incentive plans that are more fully discussed in "Note 6. Stock-Based Compensation Plans." The authoritative guidance of accounting for share-based payment requires the Company to measure the cost of all employee equity awards (that are expected to be exercised or vested) based on the grant-date fair value of those awards, and to record that cost as compensation expense over the period during which the employee is required to perform service in exchange for the award (over the vesting period of the award). The authoritative guidance of accounting for share-based payment requires cash flows resulting from excess tax benefits to be classified as a part of cash flows from financing activities. Excess tax benefits are realized tax benefits from tax deductions for exercised options in excess of the deferred tax asset attributable to stock compensation costs for such options. The exercise price of employee stock options is equal to the market price of Xilinx common stock (defined as the closing trading price reported by The NASDAQ Global Select Market) on the date of grant. Additionally, Xilinx's ESPP is deemed a compensatory plan under the authoritative guidance of accounting for share-based payments. Accordingly, the ESPP is included in the computation of stock-based compensation expense. The Company uses the straight-line attribution method to recognize stock-based compensation costs over the requisite service period of the award. Upon exercise, cancellation or expiration of stock options, deferred tax assets for options with multiple vesting dates are eliminated for each vesting period on a first-in, first-out basis as if each award had a separate vesting period. Income Taxes All income tax amounts reflect the use of the liability method under the accounting for income taxes, as interpreted by FASB authoritative guidance for measuring uncertain tax positions . Under this method, deferred tax assets and liabilities are determined based on the expected future tax consequences of temporary differences between the carrying amounts of assets and liabilities for financial and income tax reporting purposes. 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 both fiscal 2016 and 2015 , the accrual balance of the product warranty liability was 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 our 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. Concentrations of Credit Risk Avnet, one of the Company's distributors, distributes the Company's products worldwide. As of April 2, 2016 and March 28, 2015 , Avnet accounted for 75% and 67% of the Company's total net accounts receivable, respectively. Resale of product through Avnet accounted for 50% , 43% and 46% of the Company's worldwide net revenues in fiscal 2016 , 2015 and 2014 , respectively. The percentage of net accounts receivable due from Avnet and the percentage of worldwide net revenues from Avnet are consistent with historical patterns. 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 consolidated balance sheet. The Company attempts to mitigate the concentration of credit risk in its trade receivables through its credit evaluation process, collection terms and 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 from distributors. No end customer accounted for more than 10% of the Company's worldwide net revenues for any of the periods presented. The Company mitigates concentrations of credit risk in its investments in debt securities by currently investing more than 86% of its portfolio in AA 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 April 2, 2016 , approximately 35% of the portfolio consisted of mortgage-backed securities. All of the mortgage-backed securities in the 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. The global credit markets may experience adverse conditions that negatively impact the values of various types of investment and non-investment grade securities. The global credit and capital markets may experience significant volatility and disruption due to instability in the global financial system, uncertainty related to global economic conditions and concerns regarding sovereign financial stability. Therefore, there is a risk that we may incur other-than-temporary impairment charges for certain types of investments should credit market conditions deteriorate. See "Note 4. Financial Instruments" for a table of the Company's available-for-sale securities. Adoption of New Accounting Standard for Classification of Deferred Taxes In November 2015, the FASB issued the authoritative guidance regarding balance sheet classification of deferred taxes. The guidance requires companies to classify all deferred tax assets and liabilities as non-current on the balance sheet instead of separating deferred taxes into current and non-current amounts. This guidance is effective for public business entities for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The amendments can be applied retrospectively or prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. The Company adopted this guidance in the fourth quarter of fiscal year 2016 on a prospective basis, and therefore, no adjustments were made to the prior periods. Recent Accounting Pronouncements In April 2014, the FASB issued the authoritative guidance that outlines a new global revenue recognition standard that replaces virtually all existing US GAAP guidance on contracts with customers and the related other assets and deferred costs. The guidance provides a five-step process for recognizing revenue that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard also requires expanded qualitative and quantitative disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In July 2015, FASB approved the deferral of the effective date of this guidance by one year. As a result, this guidance will be effective for the Company beginning in fiscal year 2019, with an option to early adopt in fiscal year 2018. The new standard is required to be applied retrospectively to each prior reporting period presented, or retrospectively with the cumulative effect of initially applying it recognized at the date of initial application. The Company is currently evaluating the full impact of this new guidance on its consolidated financial statements, including selection of the transition method. However, assuming all other revenue recognition criteria have been met, it is likely that the new guidance would require the Company to recognize revenue and cost relating to distributor sales upon product delivery, subject to estimated allowance for distributor price adjustments and rights of return. In July 2015, the FASB issued the authoritative guidance that requires an entity to measure inventory at the lower of cost or net realizable value (NRV). NRV is the estimated selling price in the ordinary course of business, less reasonably predictable cost of completion, disposal, and transportation. This guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years, which for Xilinx would be the first quarter of fiscal year 2018. The amendments should be applied prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In January 2016, the FASB issued the final guidance regarding how companies measure equity investments that do not result in consolidation and are not accounted for under the equity method and how they present changes in the fair value of financial liabilities measured under the fair value option that are attributable to their own credit. The new guidance also changes certain disclosure requirements and other aspects of current US GAAP. It does not change the guidance for classifying and measuring investments in debt securities and loans. Early adoption is permitted. The guidance is effective for public business entities for annual periods beginning after December 15, 2017, and interim periods within those annual periods, which for Xilinx would be the first quarter of fiscal year 2019. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In February 2016, the FASB issued the authoritative guidance on leases. The new standard requires the recognition of assets and liabilities arising from lease transactions on the balance sheet and will also require significant additional disclosures about the amount, timing and uncertainty of cash flows from leases. Accordingly, a lessee will recognize a lease asset for its right to use the underlying asset and a lease liability for the corresponding lease obligation. The new standard is effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, which for Xilinx would be the first quarter of fiscal year 2020. Early adoption is permitted. The new standard must be adopted using a modified retrospective transition, and provides for certain practical expedients. In addition, the transition will require application of the new guidance at the beginning of the earliest comparative period presented. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In March 2016, the FASB issued the authoritative guidance regarding contingent put and call options in debt instruments. The new guidance simplifies the embedded derivative analysis for debt instruments containing contingent call or put options, whereby a contingent put or call option embedded in a debt instrument would be evaluated for possible separate accounting as a derivative instrument without regard to the nature of the exercise contingency. The new guidance will be effective for public business entities in fiscal years beginning after December 15, 2016, including interim periods within those years, which for Xilinx would be the first quarter of fiscal year 2018. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In March 2016, the FASB finalized its amendments to the guidance in the new revenue standard on assessing whether an entity is a principal or an agent in a revenue transaction. The amendments clarify how an entity should identify the unit of accounting for the principal versus agent evaluation, and how it should apply the control principle to certain types of arrangements, such as service transactions, by explaining what a principal controls before the specified good or service is transferred to the customer. The FASB also addressed how an entity acting as a principal would determine its transaction price when it does not know the price charged to its customer for its goods or services by an intermediary. The amendments have the same effective date and transition requirements as the new revenue standard, which for Xilinx would be the beginning of fiscal year 2019. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In March 2016, the FASB issued the authoritative guidance that simplifies various aspects related to how share-based payments are accounted for and presented in the financial statements. The areas for simplification involve several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The new guidance will be effective for public business entities in fiscal years beginning after December 15, 2016, including interim periods within those years, which for Xilinx would be the first quarter of fiscal year 2018. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements. In April 2016, the FASB finalized amendments to the guidance in the new revenue standard on identifying performance obligations and accounting for licenses of intellectual property. The amendments address implementation issues that were raised by stakeholders and discussed by the Revenue Recognition Transition Resource Group. The amendments have the same effective date and transition requirements as the new revenue standard, which for Xilinx would be the beginning of fiscal year 2019. The Company is currently evaluating the impact of this new guidance on its consolidated financial statements.
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements include the accounts of Xilinx and its wholly-owned subsidiaries after elimination of all intercompany transactions. The Company uses a 52 - to 53 -week fiscal year ending on the Saturday nearest March 31. Fiscal 2016 was a 53-week year ended on April 2, 2016 . Each of Fiscal 2015 and 2014 was a 52-week year, ended on March 28, 2015 and March 29, 2014 , respectively. Fiscal 2017 will be a 52-week year ending on April 1, 2017 .
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements and the reported amounts of net revenues and expenses during the reporting period. Such estimates relate to, among others, the useful lives of assets, assessment of recoverability of property, plant and equipment, long-lived assets and goodwill, inventory write-downs, allowances for doubtful accounts, customer returns, deferred tax assets, stock-based compensation, potential reserves relating to litigation and tax matters, valuation of certain investments and derivative financial instruments as well as other accruals or reserves. Actual results may differ from those estimates and such differences may be material to the financial statements.
Cash Equivalents and Investments	Cash Equivalents and Investments Cash equivalents consist of highly liquid investments with original maturities from the date of purchase of three months or less. These investments consist of money market funds, non-financial institution securities, U.S. and foreign government and agency securities, municipal bonds and financial institution securities. Short-term investments consist of mortgage-backed securities, non-financial institution securities, U.S. and foreign government and agency securities, financial institution securities, asset-backed securities, bank loans, a debt mutual fund and municipal bonds with original maturities greater than three months and remaining maturities less than one year from the balance sheet date. Long-term investments consist of mortgage-backed securities, a debt mutual fund, auction rate securities, municipal bonds and asset-backed securities with remaining maturities greater than one year, unless the investments are specifically identified to fund current operations, in which case they are classified as short-term investments. As of April 2, 2016 and March 28, 2015 , long-term investments also included approximately $10.0 million and $10.3 million , respectively, of auction rate securities that experienced failed auctions in the fourth quarter of fiscal 2008. These auction rate securities are secured primarily by pools of student loans originated under Federal Family Education Loan Program that are substantially guaranteed by the U. S. Department of Education. Equity investments are also classified as long-term investments since they are not intended to fund current operations. The Company maintains its cash balances with various banks with high quality ratings, and with investment banking and asset management institutions. The Company manages its liquidity risk by investing in a variety of money market funds, high-grade commercial paper, corporate bonds, municipal bonds, U.S. and foreign government and agency securities, asset-backed securities, mortgage-backed securities, bank loans and debt mutual funds. This diversification of investments is consistent with its policy to maintain liquidity and ensure the ability to collect principal. The Company maintains an offshore investment portfolio denominated in U.S. dollars. All investments are made pursuant to corporate investment policy guidelines. Investments include Euro commercial paper, Euro dollar bonds, Euro dollar floating rate notes, offshore time deposits, U.S. and foreign government and agency securities, asset-backed securities, bank loans and mortgage-backed securities issued by U.S. government-sponsored enterprises and agencies. Management classifies investments as available-for-sale or held-to-maturity at the time of purchase and re-evaluates such designation at each balance sheet date, although classification is not generally changed. Securities are classified as held-to-maturity when the Company has the positive intent and the ability to hold the securities until maturity. Held-to-maturity securities are carried at cost adjusted for amortization of premiums and accretion of discounts to maturity. Such amortization, as well as any interest on the securities, is included in interest income. No investments were classified as held-to-maturity as of April 2, 2016 or March 28, 2015 . Available-for-sale securities are carried at fair value with the unrealized gains or losses, net of tax, included as a component of accumulated other comprehensive income (loss) in stockholders' equity. See "Note 3. Fair Value Measurements" for information relating to the determination of fair value. Realized gains and losses on available-for-sale securities are included in interest and other expense, net, and declines in value judged to be other than temporary are included in impairment loss on investments. In determining if and when a decline in value below the adjusted cost of marketable debt and equity securities is other than temporary, we evaluate on an ongoing basis the market conditions, trends of earnings, financial condition, credit ratings, any underlying collateral and other key measures for our investments. The cost of securities matured or sold is based on the specific identification method. In determining whether a decline in value of non-marketable equity investments in private companies is other than temporary, the assessment is made by considering available evidence including the general market conditions in the investee's industry, the investee's product development status, the investee's ability to meet business milestones and the financial condition and near-term prospects of the individual investee, including the rate at which the investee is using its cash, the investee's need for possible additional funding at a lower valuation and bona fide offers to purchase the investee from a prospective acquirer. When a decline in value is deemed to be other than temporary, the Company recognizes an impairment loss in the current period's operating results to the extent of the decline.
Accounts Receivable	Accounts Receivable The allowance for doubtful accounts reflects the Company's best estimate of probable losses inherent in the accounts receivable balance. The Company determines the allowance based on the aging of Xilinx's accounts receivable, historical experience, known troubled accounts, management judgment and other currently available evidence. Xilinx writes off accounts receivable against the allowance when Xilinx determines a balance is uncollectible and no longer actively pursues collection of the receivable. The amounts of accounts receivable written off were insignificant for all periods presented.
Inventories	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) April 2, 2016 March 28, 2015 Raw materials $ 15,346 $ 14,174 Work-in-process 123,675 183,472 Finished goods 39,529 33,682 $ 178,550 $ 231,328 The Company reviews and sets standard costs quarterly to approximate current actual manufacturing costs. The Company's manufacturing overhead standards for product costs are calculated assuming full absorption of actual spending over actual volumes. Given the cyclicality of the market, the obsolescence of technology and product lifecycles, the Company writes down inventory based on forecasted demand and technological obsolescence. These forecasts are developed based on inputs from the Company's customers, including bookings and extended but uncommitted demand forecasts, and internal analyses such as customer historical purchasing trends and actual and anticipated design wins, as well as market and economic conditions, technology changes, new product introductions and changes in strategic direction. These factors require estimates that may include uncertain elements. The estimates of future demand that the Company uses in the valuation of inventory are the basis for its published revenue forecasts, which are also consistent with our short-term manufacturing plans. The differences between the Company's demand forecast and the actual demand in the recent past have not resulted in any material write down in the Company's inventory. If the Company's demand forecast for specific products is greater than actual demand and the Company fails to reduce manufacturing output accordingly, the Company could be required to write down additional inventory, which would have a negative impact on the Company's gross margin.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are recorded at cost, net of accumulated depreciation. Depreciation for financial reporting purposes is computed using the straight-line method over the estimated useful lives of the assets of three to five years for machinery, equipment, furniture and fixtures and 15 to 30 years for buildings. Depreciation expense totaled $50.8 million , $55.3 million and $55.5 million for fiscal 2016 , 2015 and 2014 , respectively.
Impairment of Long-Lived Assets Including Acquisition-Related Intangibles	Impairment of Long-Lived Assets The Company evaluates the carrying value of long-lived assets and certain identifiable intangible assets to be held and used for impairment if indicators of potential impairment exist. Impairment indicators are reviewed on a quarterly basis. When indicators of impairment exist and assets are held for use, the Company estimates future undiscounted cash flows attributable to the assets. In the event such cash flows are not expected to be sufficient to recover the recorded value of the assets, the assets are written down to their estimated fair values based on the expected discounted future cash flows attributable to the assets or based on appraisals. When assets are removed from operations and held for sale, Xilinx estimates impairment losses as the excess of the carrying value of the assets over their fair value.
Goodwill	Goodwill Goodwill is not amortized but is subject to impairment tests on an annual basis, or more frequently if indicators of potential impairment exist, using a fair-value-based approach. Based on the impairment review performed during the fourth quarter of fiscal 2016 , there was no impairment of goodwill in fiscal 2016 . Unless there are indicators of impairment, the Company's next impairment review for goodwill will be performed and completed in the fourth quarter of fiscal 2017 . To date, no impairment indicators have been identified.
Revenue Recognition	Revenue Recognition Sales to distributors are made under agreements providing distributor price adjustments and rights of return under certain circumstances. Revenue and costs relating to distributor sales are deferred until products are sold by the distributors to the distributors' end customers. For fiscal 2016 , approximately 60% of the Company's net revenues were from products sold to distributors for subsequent resale to OEMs or their subcontract manufacturers. Revenue recognition depends on notification from the distributor that product has been sold to the distributor's end customer. Also reported by the distributor are product resale price, quantity and end customer shipment information, as well as inventory on hand. Reported distributor inventory on hand is reconciled to deferred revenue balances monthly. The Company maintains system controls to validate distributor data and to verify that the reported information is accurate. Deferred income on shipments to distributors reflects the estimated effects of distributor price adjustments and the amount of gross margin expected to be realized when distributors sell through product purchased from the Company. Accounts receivable from distributors are recognized and inventory is relieved when title to inventories transfers, typically upon shipment from Xilinx at which point the Company has a legally enforceable right to collection under normal payment terms. As of April 2, 2016 , the Company had $70.9 million of deferred revenue and $19.1 million of deferred cost of revenues recognized as a net $51.8 million of deferred income on shipments to distributors. As of March 28, 2015 , the Company had $87.7 million of deferred revenue and $21.6 million of deferred cost of revenues recognized as a net $66.1 million of deferred income on shipments to distributors. The deferred income on shipments to distributors that will ultimately be recognized in the Company's consolidated statement of income will be different than the amount shown on the consolidated balance sheet due to actual price adjustments issued to the distributors when the product is sold to their end customers. Revenue from sales to the Company's direct customers is recognized upon shipment provided that persuasive evidence of a sales arrangement exists, the price is fixed or determinable, title has transferred, collection of resulting receivables is reasonably assured, and there are no customer acceptance requirements and no remaining significant obligations. For each of the periods presented, there were no significant acceptance provisions with the Company's direct customers. Revenue from software licenses is deferred and recognized as revenue over the term of the licenses of one year. Revenue from support services is recognized when the service is performed. Revenue from Support Products, which includes software and services sales, was less than 5% of net revenues for all of the periods presented. Allowances for end customer sales returns are recorded based on historical experience and for known pending customer returns or allowances.
Foreign Currency Translation	Foreign Currency Translation The U.S. dollar is the functional currency for the Company's Ireland and Singapore subsidiaries. Monetary assets and liabilities that are not denominated in the functional currency are remeasured into U.S. dollars, and the resulting gains or losses are included in the consolidated statements of income under interest and other expense, net. The remeasurement gains or losses were immaterial for all fiscal periods presented. The local currency is the functional currency for each of the Company's other wholly-owned foreign subsidiaries. Assets and liabilities are translated from foreign currencies into U.S. dollars at month-end exchange rates and statements of income are translated at the average monthly exchange rates. Exchange gains or losses arising from translation of foreign currency denominated assets and liabilities (i.e., cumulative translation adjustment) are included as a component of accumulated other comprehensive income (loss) in stockholders' equity.
Derivative Financial Instruments	Derivative Financial Instruments To reduce financial risk, the Company periodically enters into financial arrangements as part of the Company's ongoing asset and liability management activities. Xilinx uses derivative financial instruments to hedge fair values of underlying assets and liabilities or future cash flows which are exposed to foreign currency or commodity price fluctuations. The Company does not enter into derivative financial instruments for trading or speculative purposes. See "Note 5. Derivative Financial Instruments" for detailed information about the Company's derivative financial instruments.
Research and Development Expenses	Research and Development Expenses Research and development costs are current period expenses and charged to expense as incurred.
Stock-Based Compensation	Stock-Based Compensation The Company has equity incentive plans that are more fully discussed in "Note 6. Stock-Based Compensation Plans." The authoritative guidance of accounting for share-based payment requires the Company to measure the cost of all employee equity awards (that are expected to be exercised or vested) based on the grant-date fair value of those awards, and to record that cost as compensation expense over the period during which the employee is required to perform service in exchange for the award (over the vesting period of the award). The authoritative guidance of accounting for share-based payment requires cash flows resulting from excess tax benefits to be classified as a part of cash flows from financing activities. Excess tax benefits are realized tax benefits from tax deductions for exercised options in excess of the deferred tax asset attributable to stock compensation costs for such options. The exercise price of employee stock options is equal to the market price of Xilinx common stock (defined as the closing trading price reported by The NASDAQ Global Select Market) on the date of grant. Additionally, Xilinx's ESPP is deemed a compensatory plan under the authoritative guidance of accounting for share-based payments. Accordingly, the ESPP is included in the computation of stock-based compensation expense. The Company uses the straight-line attribution method to recognize stock-based compensation costs over the requisite service period of the award. Upon exercise, cancellation or expiration of stock options, deferred tax assets for options with multiple vesting dates are eliminated for each vesting period on a first-in, first-out basis as if each award had a separate vesting period.
Income Taxes	Income Taxes All income tax amounts reflect the use of the liability method under the accounting for income taxes, as interpreted by FASB authoritative guidance for measuring uncertain tax positions . Under this method, deferred tax assets and liabilities are determined based on the expected future tax consequences of temporary differences between the carrying amounts of assets and liabilities for financial and income tax reporting purposes.
Product Warranty and Indemnification	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 both fiscal 2016 and 2015 , the accrual balance of the product warranty liability was 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 our 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.

Summary of Significant Accoun31

Summary of Significant Accounting Policies and Concentrations of Risk (Tables)	12 Months Ended
	Apr. 02, 2016
Accounting Policies [Abstract]
Schedule of 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) April 2, 2016 March 28, 2015 Raw materials $ 15,346 $ 14,174 Work-in-process 123,675 183,472 Finished goods 39,529 33,682 $ 178,550 $ 231,328

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Apr. 02, 2016
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 April 2, 2016 and March 28, 2015 : April 2, 2016 (In thousands) Quoted Significant Significant Total Fair Assets Cash equivalents: Money market funds $ 232,698 $ — $ — $ 232,698 Non-financial institution securities — 104,964 — 104,964 Foreign government and agency securities — 98,967 — 98,967 Municipal bonds — 1,003 — 1,003 Short-term investments: Financial institution securities — 284,853 — 284,853 Non-financial institution securities — 460,148 — 460,148 Municipal bonds — 61,579 — 61,579 U.S. government and agency securities 81,873 110,420 — 192,293 Foreign government and agency securities — 214,201 — 214,201 Mortgage-backed securities — 1,067,157 — 1,067,157 Debt mutual fund — 35,116 — 35,116 Bank loans — 102,015 — 102,015 Asset-backed securities — 210,051 — 210,051 Commercial mortgage-backed securities — 206,470 — 206,470 Long-term investments: Auction rate securities — — 9,977 9,977 Municipal bonds — 7,100 — 7,100 Mortgage-backed securities — 140,382 — 140,382 Debt mutual fund — 56,785 — 56,785 Asset-backed securities — 6,563 — 6,563 Derivative financial instruments, net — 744 — 744 Total assets measured at fair value $ 314,571 $ 3,168,518 $ 9,977 $ 3,493,066 March 28, 2015 (In thousands) Quoted Significant Significant Total Fair Assets Cash equivalents: Money market funds $ 235,583 $ — $ — $ 235,583 Financial institution securities — 229,999 — 229,999 Non-financial institution securities — 89,995 — 89,995 U.S. government and agency securities — 200,392 — 200,392 Foreign government and agency securities — 37,996 — 37,996 Short-term investments: Financial institution securities — 75,000 — 75,000 Non-financial institution securities — 339,029 — 339,029 Municipal bonds — 40,006 — 40,006 U.S. government and agency securities 256,514 301,010 — 557,524 Foreign government and agency securities — 159,936 — 159,936 Mortgage-backed securities — 859,330 — 859,330 Debt mutual fund — 38,608 — 38,608 Bank loans — 98,100 — 98,100 Asset-backed securities — 204,510 — 204,510 Commercial mortgage-backed securities — 38,446 — 38,446 Long-term investments: Auction rate securities — — 10,312 10,312 Municipal bonds — 9,650 — 9,650 Mortgage-backed securities — 180,906 — 180,906 Debt mutual fund — 56,592 — 56,592 Asset-backed securities — 7,948 — 7,948 Commercial mortgage-backed securities — 1,494 — 1,494 Total assets measured at fair value $ 492,097 $ 2,968,947 $ 10,312 $ 3,471,356 Liabilities Derivative financial instruments, net $ — $ 9,251 $ — $ 9,251 Total liabilities measured at fair value $ — $ 9,251 $ — $ 9,251 Net assets measured at fair value $ 492,097 $ 2,959,696 $ 10,312 $ 3,462,105
Changes in Level 3 instruments measured at fair value on a recurring basis	The following table is a reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3): Years Ended (In thousands) April 2, 2016 March 28, 2015 Balance as of beginning of period $ 10,312 $ 20,160 Total realized and unrealized gains (losses): Included in other comprehensive income (loss) (335 ) 1,152 Sales and settlements, net (1) — (11,000 ) Balance as of end of period $ 9,977 $ 10,312 (1) During fiscal 2015 , the Company redeemed $11.0 million of student loan auction rate securities for cash at par value.

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Apr. 02, 2016
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: April 2, 2016 March 28, 2015 (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 $ 232,698 $ — $ — $ 232,698 $ 235,583 $ — $ — $ 235,583 Financial institution — securities 284,853 — — 284,853 304,999 — — 304,999 Non-financial institution — securities 564,480 862 (230 ) 565,112 429,005 25 (6 ) 429,024 Auction rate securities 10,500 — (523 ) 9,977 10,500 — (188 ) 10,312 Municipal bonds 68,938 877 (133 ) 69,682 49,064 744 (152 ) 49,656 U.S. government and agency securities 192,291 73 (71 ) 192,293 757,954 91 (129 ) 757,916 Foreign government and agency securities 313,168 — — 313,168 197,932 — — 197,932 Mortgage-backed securities 1,200,071 12,848 (5,380 ) 1,207,539 1,035,598 8,809 (4,171 ) 1,040,236 Asset-backed securities 216,068 1,151 (605 ) 216,614 211,487 1,130 (159 ) 212,458 Debt mutual funds 101,350 — (9,449 ) 91,901 101,350 — (6,150 ) 95,200 Bank loans 102,092 25 (102 ) 102,015 98,131 29 (60 ) 98,100 Commercial mortgage- backed securities 207,847 432 (1,809 ) 206,470 40,132 133 (325 ) 39,940 $ 3,494,356 $ 16,268 $ (18,302 ) $ 3,492,322 $ 3,471,735 $ 10,961 $ (11,340 ) $ 3,471,356
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 April 2, 2016 and March 28, 2015 : April 2, 2016 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 $ 52,756 $ (230 ) $ — $ — $ 52,756 $ (230 ) Auction rate securities — — 9,977 (523 ) 9,977 (523 ) Municipal bonds 10,138 (44 ) 3,867 (89 ) 14,005 (133 ) U.S. government and agency securities 84,024 (71 ) — — 84,024 (71 ) Mortgage-backed securities 346,560 (3,916 ) 114,285 (1,464 ) 460,845 (5,380 ) Asset-backed securities 81,038 (502 ) 20,793 (103 ) 101,831 (605 ) Debt mutual funds — — 91,901 (9,449 ) 91,901 (9,449 ) Bank loans 34,358 (31 ) 42,832 (71 ) 77,190 (102 ) Commercial mortgage- backed securities 141,761 (878 ) 2,150 (931 ) 143,911 (1,809 ) $ 750,635 $ (5,672 ) $ 285,805 $ (12,630 ) $ 1,036,440 $ (18,302 ) March 28, 2015 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 $ 7,190 $ (6 ) $ — $ — $ 7,190 $ (6 ) Auction rate securities — — 10,312 (188 ) 10,312 (188 ) Municipal bonds 10,014 (94 ) 1,931 (58 ) 11,945 (152 ) U.S. government and agency securities 451,296 (129 ) — — 451,296 (129 ) Mortgage-backed securities 442,786 (2,901 ) 48,263 (1,270 ) 491,049 (4,171 ) Asset-backed securities 75,009 (159 ) — — 75,009 (159 ) Debt mutual fund 38,608 (1,392 ) 56,592 (4,758 ) 95,200 (6,150 ) Bank loans 65,085 (60 ) — — 65,085 (60 ) Commercial mortgage- backed securities 5,984 (268 ) 944 (57 ) 6,928 (325 ) $ 1,095,972 $ (5,009 ) $ 118,042 $ (6,331 ) $ 1,214,014 $ (11,340 )
Amortized cost and estimated fair value of marketable debt securities	April 2, 2016 (In thousands) Amortized Estimated Due in one year or less $ 1,120,486 $ 1,120,487 Due after one year through five years 545,350 545,457 Due after five years through ten years 264,616 265,529 Due after ten years 1,229,856 1,236,250 $ 3,160,308 $ 3,167,723
Information on sale of available-for-sale securities	Certain information related to available-for-sale securities is as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Gross realized gains on sale of available-for-sale securities $ 1,248 $ 15,101 $ 2,080 Gross realized losses on sale of available-for-sale securities (878 ) (3,223 ) (2,412 ) Net realized gains (losses) on sale of available-for-sale securities $ 370 $ 11,878 $ (332 ) Amortization of premiums on available-for-sale securities $ 26,613 $ 23,579 $ 27,293

Derivative Financial Instrume34

Derivative Financial Instruments (Tables)	12 Months Ended
	Apr. 02, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Forward currency exchange contracts outstanding	As of April 2, 2016 and March 28, 2015 , the Company had the following outstanding forward currency exchange contracts (in notional amount), which were derivative financial instruments: (In thousands and U.S. dollars) April 2, 2016 March 28, 2015 Singapore Dollar $ 26,978 $ 43,901 Euro 19,123 29,973 Indian Rupee 23,302 22,228 British Pound 10,716 12,946 Japanese Yen 3,387 4,994 $ 83,506 $ 114,042
Derivative Instruments Located on Condensed Consolidated Balance Sheet	The Company had the following derivative instruments as of April 2, 2016 and March 28, 2015 , located on the consolidated balance sheet, utilized for risk management purposes detailed above: Foreign Exchange Contracts Asset Derivatives Liability Derivatives (In thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value April 2, 2016 Prepaid expenses and other current assets $ 2,161 Other accrued liabilities $ 1,417 March 28, 2015 Prepaid expenses and other current assets $ — Other accrued liabilities $ 9,320
Effect Of Derivative Instruments On Condensed Consolidated Statements Of Income	The following table summarizes the effect of derivative instruments on the consolidated statements of income for fiscal 2016 and 2015 : Foreign Exchange Contracts (In thousands) 2016 2015 Amount of losses recognized in other comprehensive income on derivative (effective portion of cash flow hedging) $ (7,779 ) $ (8,321 ) Amount of losses reclassified from accumulated other comprehensive income into income (effective portion) * $ (7,225 ) $ (2,753 ) Amount of gains recorded (ineffective portion) * $ 10 $ 43 * Recorded in Interest and Other Expense location within the consolidated statements of income.

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	12 Months Ended
	Apr. 02, 2016
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 ESPP: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Stock-based compensation included in: Cost of revenues $ 7,977 $ 8,101 $ 7,602 Research and development 59,692 50,185 46,197 Selling, general and administrative 44,315 40,994 40,515 Restructuring charges — 579 — Stock-based compensation effect on income before taxes 111,984 99,859 94,314 Income tax effect (34,119 ) (29,268 ) (27,327 ) Net stock-based compensation effect on net income $ 77,865 $ 70,591 $ 66,987
Employee stock purchase plan, valuation assumptions	These fair values per share were estimated at the date of grant using the following weighted-average assumptions: Employee Stock Purchase Plan 2016 2015 2014 Expected life of options (years) 1.3 1.3 1.3 Expected stock price volatility 0.26 0.25 0.24 Risk-free interest rate 0.5 % 0.3 % 0.2 % Dividend yield 2.7 % 2.9 % 2.4 %
Summary of restricted stock unit activity and related information	The per share weighted-average fair value of RSUs granted during fiscal 2016 , 2015 and 2014 were $41.19 , $43.11 and $38.90 , respectively. The weighted average fair value of RSUs granted in fiscal 2016 , 2015 and 2014 were calculated based on estimates at the date of grant using the following weighted-average assumptions: 2016 2015 2014 Risk-free interest rate 1.3 % 0.8 % 0.7 % Dividend yield 2.8 % 2.5 % 2.5 %
Stock options, vested and expected to vest, outstanding	Options outstanding that have vested and are expected to vest in future periods as of April 2, 2016 are as follows: (Shares and intrinsic value in thousands) Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (1) Vested (i.e., exercisable) 1,241 $25.33 0.98 $ 27,653 Expected to vest 15 $31.74 1.73 $ 246 Total vested and expected to vest 1,256 $25.41 0.99 $ 27,899 Total outstanding 1,257 $25.42 0.99 $ 27,917 (1) These amounts represent the difference between the exercise price and $47.62 , the closing price per share of Xilinx's stock on April 2, 2016 , for all in-the-money options outstanding.
Shares available for grant under stock option plan	A summary of shares available for grant under the 2007 Equity Plan is as follows: (Shares in thousands) Shares Available for Grant March 30, 2013 15,990 Additional shares reserved 2,000 Stock options granted (8 ) Stock options cancelled 26 RSUs granted (3,297 ) RSUs cancelled 326 March 29, 2014 15,037 Additional shares reserved 3,000 Stock options cancelled 6 RSUs granted (3,201 ) RSUs cancelled 531 March 28, 2015 15,373 Stock options cancelled 10 RSUs granted (3,088 ) RSUs cancelled 634 April 2, 2016 12,929
Stock options outstanding and exercisable under stock option plans, by exercise price range	The following information relates to options outstanding and exercisable under the Option Plans as of April 2, 2016 : Options Outstanding Options Exercisable Weighted- Weighted- Weighted- (Shares in thousands) Average Average Average Remaining Exercise Exercise Options Contractual Term Price Per Options Price Per Range of Exercise Prices Outstanding (Years) Share Exercisable Share $18.97 - $19.79 5 0.18 $19.22 5 $19.22 $20.57 - $29.27 1,105 0.76 $24.32 1,105 $24.32 $30.21 - $38.56 147 2.75 $33.90 131 $33.84 1,257 0.99 $25.42 1,241 $25.33
Employee Stock Option [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 and intrinsic value in thousands) Number of Shares Weighted-Average Grant-Date Fair Value Per Share Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (1) March 30, 2013 5,996 $30.83 Granted 3,297 $38.90 Vested (2) (2,066 ) $29.25 Cancelled (326 ) $32.28 March 29, 2014 6,901 $35.08 Granted 3,201 $43.11 Vested (2) (2,698 ) $33.82 Cancelled (531 ) $32.91 March 28, 2015 6,873 $39.07 Granted 3,088 $41.19 Vested (2) (2,691 ) $37.23 Cancelled (592 ) $39.43 April 2, 2016 6,678 $40.74 2.31 $ 318,023 Expected to vest as of April 2, 2016 5,426 $40.71 2.31 $ 258,375 (1) Aggregate intrinsic value for RSUs represents the closing price per share of Xilinx's stock on April 2, 2016 of $47.62 , multiplied by the number of RSUs outstanding or expected to vest as of April 2, 2016 . (2) The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements.
Summary of option plans activity	A summary of the Company's Option Plans activity and related information is as follows: Options Outstanding (Shares in thousands) Number of Shares Weighted-Average Exercise Price Per Share March 30, 2013 12,753 $28.01 Granted 8 $41.08 Exercised (7,421 ) $29.95 Forfeited/cancelled/expired (60 ) $35.61 March 29, 2014 5,280 $25.22 Granted — — Exercised (2,009 ) $25.80 Forfeited/cancelled/expired (24 ) $32.22 March 28, 2015 3,247 $24.81 Granted — — Exercised (1,977 ) $24.38 Forfeited/cancelled/expired (13 ) $32.10 April 2, 2016 1,257 $25.42 Options exercisable at: April 2, 2016 1,241 $25.33 March 28, 2015 3,173 $24.59

Balance Sheet Information (Tabl

Balance Sheet Information (Tables)	12 Months Ended
	Apr. 02, 2016
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]	The following tables disclose the current liabilities that individually exceed 5% of the respective consolidated balance sheet amounts in each fiscal year. Individual balances that are less than 5% of the respective consolidated balance sheet amounts are aggregated and disclosed as "other." (In thousands) 2016 2015 Accrued payroll and related liabilities: Accrued compensation $ 73,823 $ 79,312 Deferred compensation plan liability 74,180 70,163 Other 6,291 7,125 $ 154,294 $ 156,600 Other accrued liabilities: Interest payable $ 5,591 $ 5,432 Forward currency exchange contracts 1,417 9,320 Restructuring Charges 1,164 14,634 Other 36,936 35,290 $ 45,108 $ 64,676

Commitments (Tables)

Commitments (Tables)	12 Months Ended
	Apr. 02, 2016
Commitments and Contingencies Disclosure [Abstract]
Future minimum lease payments under non-cancelable operating leases	Approximate future minimum lease payments under non-cancelable operating leases are as follows: Fiscal (In thousands) 2017 $ 5,106 2018 3,138 2019 2,885 2020 2,078 2021 1,494 Thereafter 956 Total $ 15,657

Net Income Per Common Share Ear

Net Income Per Common Share Earnings Per Share (Tables)	12 Months Ended
	Apr. 02, 2016
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: (In thousands, except per share amounts) 2016 2015 2014 Net income available to common stockholders $ 550,867 $ 648,216 $ 630,388 Weighted average common shares outstanding-basic 257,184 265,480 266,431 Dilutive effect of employee equity incentive plans 2,260 3,257 4,508 Dilutive effect of 2017 Convertible Notes and warrants 9,223 7,386 8,544 Dilutive effect of 2037 Convertible Notes — — 7,913 Weighted average common shares outstanding-diluted 268,667 276,123 287,396 Basic earnings per common share $ 2.14 $ 2.44 $ 2.37 Diluted earnings per common share $ 2.05 $ 2.35 $ 2.19

Interest And Other Expense, N39

Interest And Other Expense, Net (Tables)	12 Months Ended
	Apr. 02, 2016
Other Income and Expenses [Abstract]
Components of interest and other expense, net	The components of interest and other expense, net are as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Interest income $ 40,180 $ 35,876 $ 28,079 Interest expense (55,456 ) (55,431 ) (54,035 ) Other income (expense), net (17,780 ) 4,553 (3,597 ) $ (33,056 ) $ (15,002 ) $ (29,553 )

Accumulated Other Comprehensi40

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Apr. 02, 2016
Equity [Abstract]
Components of accumulated other comprehensive income (loss)	The components of accumulated other comprehensive loss are as follows: (In thousands) 2016 2015 Accumulated unrealized losses on available-for-sale securities, net of tax $ (1,260 ) $ (238 ) Accumulated unrealized gains (losses) on hedging transactions, net of tax 256 (7,523 ) Accumulated cumulative translation adjustment, net of tax (5,627 ) (3,388 ) Accumulated other comprehensive loss $ (6,631 ) $ (11,149 )

Debt and Credit Facility (Table

Debt and Credit Facility (Tables)	12 Months Ended
	Apr. 02, 2016
Schedule of Debt Instruments [Line Items]
Interest Expense Related to Debentures [Table Text Block]	Prior to the redemption, interest expense related to the 2037 Convertible Notes was included in interest and other expense, net on the consolidated statements of income, and was recognized as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Contractual coupon interest $ — $ — $ 20,065 Amortization of debt issuance costs — — 223 Amortization of embedded derivative — — 58 Amortization of debt discount — — 5,187 Fair value adjustment of embedded derivative — — (1,090 ) Total interest expense related to the 2037 Convertible Notes $ — $ — $ 24,443
2017 Convertible Notes
Schedule of Debt Instruments [Line Items]
Carrying values of liability and equity components of debentures	The carrying values of the liability and equity components of the 2017 Convertible Notes are reflected in the Company's consolidated balance sheets as follows: (In thousands) 2016 2015 Liability component: Principal amount of the 2017 Convertible Notes $ 600,000 $ 600,000 Unamortized discount of liability component (18,135 ) (33,679 ) Hedge accounting adjustment – sale of interest rate swap 5,241 9,732 Net carrying value of the 2017 Convertible Notes $ 587,106 $ 576,053 Equity component (including temporary equity) – net carrying value $ 66,415 $ 66,415
2017 Convertible Notes | 2017 Convertible Notes
Schedule of Debt Instruments [Line Items]
Interest Expense Related to Debentures [Table Text Block]	Interest expense related to the 2017 Convertible Notes was included in interest and other expense, net on the consolidated statements of income as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Contractual coupon interest $ 15,750 $ 15,750 $ 15,750 Amortization of debt issuance costs 1,448 1,448 1,448 Amortization of debt discount, net 11,052 11,052 11,052 Total interest expense related to the 2017 Convertible Notes $ 28,250 $ 28,250 $ 28,250
2019 and 2021 Notes Payable [Member]
Schedule of Debt Instruments [Line Items]
Schedule of Long-term Debt Instruments [Table Text Block]	The following table summarizes the carrying value of the 2019 and 2021 Notes in the Company's consolidated balance sheets: (In thousands) 2016 2015 Principal amount of the 2019 Notes $ 500,000 $ 500,000 Unamortized discount of the 2019 Notes (1,560 ) (2,073 ) Principal amount of the 2021 Notes 500,000 500,000 Unamortized discount of the 2021 Notes (2,605 ) (3,088 ) Total senior notes $ 995,835 $ 994,839
Interest Expense Related to Debentures [Table Text Block]	Interest expense related to the 2019 and 2021 Notes was included in interest and other expense, net on the consolidated statements of income as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Contractual coupon interest $ 25,625 $ 25,625 $ 1,210 Amortization of debt issuance costs 586 586 52 Amortization of debt discount, net 995 970 80 Total interest expense related to the 2019 and 2021 Notes $ 27,206 $ 27,181 $ 1,342

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Apr. 02, 2016
Income Tax Disclosure [Abstract]
Schedule of Provision for Income Taxes	The provision for income taxes consists of the following: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Federal: Current $ 21,366 $ 61,308 $ 16,692 Deferred 42,146 17,121 48,021 63,512 78,429 64,713 State: Current 2,447 3,330 1,333 Deferred 1,781 1,803 5,954 4,228 5,133 7,287 Foreign: Current 18,016 9,433 7,264 Deferred 202 (1,135 ) (126 ) 18,218 8,298 7,138 Total $ 85,958 $ 91,860 $ 79,138
Schedule of Income before Income Tax, Domestic and Foreign	The domestic and foreign components of income before income taxes were as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Domestic $ 37,568 $ 110,881 $ 83,617 Foreign 599,257 629,195 625,909 Income before income taxes $ 636,825 $ 740,076 $ 709,526
Schedule of Effective Income Tax Rate Reconciliation	The provision for income taxes reconciles to the amount derived by applying the Federal statutory income tax rate to income before provision for taxes as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 Income before provision for taxes $ 636,825 $ 740,076 $ 709,526 Federal statutory tax rate 35 % 35 % 35 % Computed expected tax 222,889 259,027 248,334 State taxes, net of federal benefit 3,177 2,458 4,664 Foreign earnings at lower tax rates (112,942 ) (141,372 ) (143,336 ) Tax credits (25,211 ) (26,633 ) (23,389 ) Other (1,955 ) (1,620 ) (7,135 ) Provision for income taxes $ 85,958 $ 91,860 $ 79,138
Schedule of Deferred Tax Assets and Liabilities	The major components of deferred tax assets and liabilities consisted of the following as of April 2, 2016 and March 28, 2015 : (In thousands) 2016 2015 Deferred tax assets: Stock-based compensation $ 22,128 $ 18,233 Deferred income on shipments to distributors 9,307 9,207 Accrued expenses 32,771 28,318 Tax credit carryforwards 95,424 86,650 Deferred compensation plan 27,412 26,079 Low income housing and other investments 8,265 10,247 Other 11,538 10,706 Subtotal 206,845 189,440 Valuation allowance (62,179 ) (52,552 ) Total deferred tax assets 144,666 136,888 Deferred tax liabilities: Unremitted foreign earnings (335,522 ) (280,322 ) Convertible debt (2,349 ) (3,220 ) Other (1,699 ) (3,987 ) Total deferred tax liabilities (339,570 ) (287,529 ) Total net deferred tax liabilities $ (194,904 ) $ (150,641 )
Schedule of Changes to Unrecognized Income Tax Benefits	The aggregate changes in the balance of gross unrecognized tax benefits for fiscal 2016 and 2015 were as follows: (In thousands) 2016 2015 Balance as of beginning of fiscal year $ 30,089 $ 26,398 Increases in tax positions for prior years 786 97 Decreases in tax positions for prior years (606 ) (37 ) Increases in tax positions for current year 4,757 4,822 Settlements (85 ) — Lapses in statutes of limitation (942 ) (1,191 ) Balance as of end of fiscal year $ 33,999 $ 30,089

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Apr. 02, 2016
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Net revenues by geographic region were as follows: (In thousands) April 2, 2016 March 28, 2015 March 29, 2014 North America: United States $ 592,422 $ 625,434 $ 610,276 Other 118,240 112,900 97,416 Total North America 710,662 738,334 707,692 Asia Pacific: China 520,562 573,007 564,814 Other 335,304 357,598 375,013 Total Asia Pacific 855,866 930,605 939,827 Europe 424,685 477,102 519,829 Japan 222,668 231,303 215,183 Worldwide total $ 2,213,881 $ 2,377,344 $ 2,382,531 Net long-lived assets by country at fiscal year-ends were as follows: (In thousands) 2016 2015 2014 United States $ 191,400 $ 195,353 $ 237,229 Foreign: Ireland 43,011 46,216 48,043 Singapore 36,029 43,020 51,569 Other 12,906 16,449 18,248 Total foreign 91,946 105,685 117,860 Worldwide total $ 283,346 $ 301,038 $ 355,089

Goodwill and Acquisition-Rela44

Goodwill and Acquisition-Related Intangibles (Tables)	12 Months Ended
	Apr. 02, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Gross and net amounts of goodwill and of acquisition-related intangibles	As of April 2, 2016 and March 28, 2015 , the gross and net amounts of goodwill and of acquisition-related intangibles for all acquisitions were as follows: Weighted-Average (In thousands) 2016 2015 Amortization Life Goodwill $ 159,296 $ 159,296 Core technology, gross 77,640 77,640 5.6 years Less accumulated amortization (71,472 ) (64,988 ) Core technology, net 6,168 12,652 Other intangibles, gross 46,606 46,606 2.7 years Less accumulated amortization (46,572 ) (46,506 ) Other intangibles, net 34 100 Total acquisition-related intangibles, gross 124,246 124,246 Less accumulated amortization (118,044 ) (111,494 ) Total acquisition-related intangibles, net $ 6,202 $ 12,752
Schedule of expected annual amortization expense for acquisition-related intangibles	Based on the carrying value of acquisition-related intangibles recorded as of April 2, 2016 , and assuming no subsequent impairment of the underlying assets, the annual amortization expense for acquisition-related intangibles is expected to be as follows: Fiscal (In thousands) 2017 $ 4,761 2018 1,374 2019 67 Total $ 6,202

Nature of Operations (Details)

Nature of Operations (Details)	12 Months Ended
	Apr. 02, 2016
Asia Pacific, Europe, and Japan [Member] | Sales Revenue, Goods, Net [Member] | Geographic Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	50.00%

Summary of Significant Accoun46

Summary of Significant Accounting Policies and Concentrations of Risk (Investments) (Details) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Schedule of Available-for-sale Securities [Line Items]
Long-term investments	$ 220,807	$ 266,902
Auction Rate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Long-term investments	$ 9,977	$ 10,312

Summary of Significant Accoun47

Summary of Significant Accounting Policies and Concentrations of Risk (Inventory) (Details) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 15,346	$ 14,174
Work-in-process	123,675	183,472
Finished goods	39,529	33,682
Total inventories	$ 178,550	$ 231,328

Summary of Significant Accoun48

Summary of Significant Accounting Policies and Concentrations of Risk (PPE) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Property, Plant and Equipment [Line Items]
Depreciation	$ 50,828	$ 55,266	$ 55,464
Machinery, Equipment, Furniture And Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	3 years
Machinery, Equipment, Furniture And Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	5 years
Buildings [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	15 years
Buildings [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	30 years

Summary of Significant Accoun49

Summary of Significant Accounting Policies and Concentrations of Risk (Concentrations) (Details) - Customer	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Concentration Risk [Line Items]
Percentage of total accounts receivable accounted from Avnet	75.00%	67.00%
Percentage of net revenues through resale of product from Avnet	50.00%	43.00%	46.00%
Number of end customers accounted for net revenues	0	0	0
Percentage of mortgage-backed securities in total investment portfolio	35.00%
Minimum [Member]
Concentration Risk [Line Items]
Percentage of higher grade securities investment in debt securities (more than)	86.00%
Sales Revenue, Goods, Net [Member] | Support Products [Member] | Maximum [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	5.00%	5.00%	5.00%

Summary of Significant Accoun50

Summary of Significant Accounting Policies and Concentrations of Risk (Other) (Details)	12 Months Ended
	Apr. 02, 2016USD ($)Customer	Mar. 28, 2015USD ($)Customer	Mar. 29, 2014Customer
Summary of Significant Accounting Policies and Concentrations of Risk [Abstract]
Held-to-maturity Securities	$ 0	$ 0
Impairment of goodwill	$ 0
Percentage of net revenues from products sold to distributors	60.00%
Deferred revenue	$ 70,900,000	87,700,000
Net deferred cost of revenues	19,100,000	21,600,000
Deferred income on shipments to distributors	$ 51,758,000	$ 66,071,000
Number Of End Customers Accounted For Net Revenues | Customer	0	0	0

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	$ 3,493,066	$ 3,471,356
Liabilities, Fair Value Disclosure, Recurring		9,251
Fair Value, Net Asset (Liability)		3,462,105
Fair Value, Inputs, Level 1 [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	314,571	492,097
Liabilities, Fair Value Disclosure, Recurring		0
Fair Value, Net Asset (Liability)		492,097
Fair Value, Inputs, Level 2 [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	3,168,518	2,968,947
Liabilities, Fair Value Disclosure, Recurring		9,251
Fair Value, Net Asset (Liability)		2,959,696
Fair Value, Inputs, Level 3 [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	9,977	10,312
Liabilities, Fair Value Disclosure, Recurring		0
Fair Value, Net Asset (Liability)		10,312
Cash And Cash Equivalents [Member] | Money Market Funds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	232,698	235,583
Cash And Cash Equivalents [Member] | financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring		229,999
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, Recurring	104,964	89,995
Cash And Cash Equivalents [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	1,003
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, Recurring		200,392
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, Recurring	98,967	37,996
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, Recurring	232,698	235,583
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, Recurring		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, Recurring	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	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, Recurring		0
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, Recurring	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, Recurring	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, Recurring		229,999
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, Recurring		89,995
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	1,003
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, Recurring		200,392
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, Recurring		37,996
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, Recurring	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, Recurring		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, Recurring	0	0
Cash And Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	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, Recurring		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, Recurring	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, Recurring	284,853	75,000
Short-Term Investments [Member] | Non-financial institution securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	460,148	339,029
Short-Term Investments [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	61,579	40,006
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, Recurring	192,293	557,524
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, Recurring	214,201	159,936
Short-Term Investments [Member] | Asset-backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	210,051	204,510
Short-Term Investments [Member] | Mortgage-Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	1,067,157	859,330
Short-Term Investments [Member] | Debt Mutual Fund [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	35,116	38,608
Short-Term Investments [Member] | Commercial Mortgage Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	206,470	38,446
Short-Term Investments [Member] | Bank Loans [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	102,015	98,100
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, Recurring	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, Recurring	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	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, Recurring	81,873	256,514
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, Recurring	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, Recurring	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, Recurring	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Debt Mutual Fund [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	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, Recurring	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Bank Loans [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	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, Recurring	284,853	75,000
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, Recurring	460,148	339,029
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	61,579	40,006
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, Recurring	110,420	301,010
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, Recurring	214,201	159,936
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, Recurring	210,051	204,510
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, Recurring	1,067,157	859,330
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Mutual Fund [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	35,116	38,608
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, Recurring	206,470	38,446
Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Bank Loans [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	102,015	98,100
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, Recurring	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, Recurring	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	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, Recurring	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, Recurring	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, Recurring	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, Recurring	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Debt Mutual Fund [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	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, Recurring	0	0
Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Bank Loans [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	0	0
Long-Term Investments [Member] | Student loan auction rate securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	9,977	10,312
Long-Term Investments [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	7,100	9,650
Long-Term Investments [Member] | Asset-backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	6,563	7,948
Long-Term Investments [Member] | Mortgage-Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	140,382	180,906
Long-Term Investments [Member] | Debt Mutual Fund [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	56,785	56,592
Long-Term Investments [Member] | Commercial Mortgage Backed Securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring		1,494
Long-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Student loan auction rate securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	0	0
Long-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	0	0
Long-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, Recurring	0	0
Long-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, Recurring	0	0
Long-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Debt Mutual Fund [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	0	0
Long-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, Recurring		0
Long-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Student loan auction rate securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	0	0
Long-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	7,100	9,650
Long-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, Recurring	6,563	7,948
Long-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, Recurring	140,382	180,906
Long-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Mutual Fund [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	56,785	56,592
Long-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, Recurring		1,494
Long-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Student loan auction rate securities [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	9,977	10,312
Long-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Municipal Bonds [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	0	0
Long-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, Recurring	0	0
Long-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, Recurring	0	0
Long-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] | Debt Mutual Fund [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets, Fair Value Disclosure, Recurring	$ 0	0
Long-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, Recurring		$ 0

Fair Value Measurements (Deta52

Fair Value Measurements (Details 1) - USD ($) $ in Thousands		12 Months Ended
		Apr. 02, 2016	Mar. 28, 2015
Changes in Level 3 instruments measured at fair value on a recurring basis
Balance as of beginning of period		$ 10,312	$ 20,160
Gains (losses) included in other comprehensive income (loss)		(335)	1,152
Sales and settlements, net	[1]	0	(11,000)
Balance as of end of period		9,977	10,312
Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		3,493,066	3,471,356
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		314,571	492,097
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		3,168,518	2,968,947
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		9,977	10,312
Cash and Cash Equivalents [Member] | Money Market Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		232,698	235,583
Cash and Cash Equivalents [Member] | Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		232,698	235,583
Cash and Cash Equivalents [Member] | Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Cash and Cash Equivalents [Member] | Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Cash and Cash Equivalents [Member] | Foreign Government Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		98,967	37,996
Cash and Cash Equivalents [Member] | Foreign Government Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Cash and Cash Equivalents [Member] | Foreign Government Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring			37,996
Changes in Level 3 instruments measured at fair value on a recurring basis
Assets, Fair Value Disclosure		98,967
Cash and Cash Equivalents [Member] | Foreign Government Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Cash and Cash Equivalents [Member] | Municipal Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		1,003
Cash and Cash Equivalents [Member] | Municipal Bonds [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0
Cash and Cash Equivalents [Member] | Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		1,003
Cash and Cash Equivalents [Member] | Municipal Bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0
Cash and Cash Equivalents [Member] | Non-financial institution securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		104,964	89,995
Cash and Cash Equivalents [Member] | Non-financial institution securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Cash and Cash Equivalents [Member] | Non-financial institution securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring			89,995
Changes in Level 3 instruments measured at fair value on a recurring basis
Assets, Fair Value Disclosure		104,964
Cash and Cash Equivalents [Member] | Non-financial institution securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Short-term Investments [Member] | Foreign Government Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		214,201	159,936
Short-term Investments [Member] | Foreign Government Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Short-term Investments [Member] | Foreign Government Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		214,201	159,936
Short-term Investments [Member] | Foreign Government Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Short-term Investments [Member] | Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		210,051	204,510
Short-term Investments [Member] | Asset-backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Short-term Investments [Member] | Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		210,051	204,510
Short-term Investments [Member] | Asset-backed Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0
Short-term Investments [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		206,470	38,446
Short-term Investments [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Short-term Investments [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		206,470	38,446
Short-term Investments [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Short-term Investments [Member] | Municipal Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		61,579	40,006
Short-term Investments [Member] | Municipal Bonds [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Short-term Investments [Member] | Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		61,579	40,006
Short-term Investments [Member] | Municipal Bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Short-term Investments [Member] | Non-financial institution securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		460,148	339,029
Short-term Investments [Member] | Non-financial institution securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Short-term Investments [Member] | Non-financial institution securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		460,148	339,029
Short-term Investments [Member] | Non-financial institution securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Other Long-term Investments [Member] | Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		6,563	7,948
Other Long-term Investments [Member] | Asset-backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Other Long-term Investments [Member] | Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		6,563	7,948
Other Long-term Investments [Member] | Asset-backed Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Other Long-term Investments [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring			1,494
Other Long-term Investments [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring			0
Other Long-term Investments [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring			1,494
Other Long-term Investments [Member] | Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring			0
Other Long-term Investments [Member] | Derivative Financial Instruments, Assets [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		744
Other Long-term Investments [Member] | Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0
Other Long-term Investments [Member] | Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		744
Other Long-term Investments [Member] | Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0
Other Long-term Investments [Member] | Municipal Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		7,100	9,650
Other Long-term Investments [Member] | Municipal Bonds [Member] | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		0	0
Other Long-term Investments [Member] | Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		7,100	9,650
Other Long-term Investments [Member] | Municipal Bonds [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Assets, Fair Value Disclosure, Recurring		$ 0	$ 0
[1]	During fiscal 2015, the Company redeemed $11.0 million of student loan auction rate securities for cash at par value.

Fair Value Measurements (Deta53

Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Noncurrent	$ 220,807	$ 266,902
Available-for-sale Securities	3,492,322	3,471,356
Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Noncurrent	9,977	$ 10,312
2019 Notes Payable [Member] | 2019 Notes Payable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debentures	503,600
2017 Convertible Notes | Convertible Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debentures	990,500
2021 Notes Payable [Member] | 2019 Notes Payable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debentures	$ 523,600

Financial Instruments (Details)

Financial Instruments (Details) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Available-for-sale securities
Amortized Cost	$ 3,494,356	$ 3,471,735
Available-for-sale Securities, Gross Unrealized Gains (Instant)	16,268	10,961
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(18,302)	(11,340)
Available-for-sale Securities, Noncurrent	220,807	266,902
Estimated Fair Value	3,492,322	3,471,356
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	285,805	118,042
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,036,440	1,214,014
Money Market Funds [Member]
Available-for-sale securities
Amortized Cost	232,698	235,583
Available-for-sale Securities, Gross Unrealized Gains (Instant)	0	0
Available-for-sale Securities, Gross Unrealized Losses (Instant)	0	0
Estimated Fair Value	232,698	235,583
financial institution securities [Member]
Available-for-sale securities
Amortized Cost	284,853	304,999
Available-for-sale Securities, Gross Unrealized Gains (Instant)	0	0
Available-for-sale Securities, Gross Unrealized Losses (Instant)	0	0
Estimated Fair Value	284,853	304,999
Non-financial institution securities [Member]
Available-for-sale securities
Amortized Cost	564,480	429,005
Available-for-sale Securities, Gross Unrealized Gains (Instant)	862	25
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(230)	(6)
Estimated Fair Value	565,112	429,024
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	52,756	7,190
Auction Rate Securities [Member]
Available-for-sale securities
Amortized Cost	10,500	10,500
Available-for-sale Securities, Gross Unrealized Gains (Instant)	0	0
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(523)	(188)
Available-for-sale Securities, Noncurrent	9,977	10,312
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	9,977	10,312
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	9,977	10,312
Municipal Bonds [Member]
Available-for-sale securities
Amortized Cost	68,938	49,064
Available-for-sale Securities, Gross Unrealized Gains (Instant)	877	744
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(133)	(152)
Estimated Fair Value	69,682	49,656
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	3,867	1,931
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	14,005	11,945
U.S. Government and Agency Securities [Member]
Available-for-sale securities
Amortized Cost	192,291	757,954
Available-for-sale Securities, Gross Unrealized Gains (Instant)	73	91
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(71)	(129)
Estimated Fair Value	192,293	757,916
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	84,024	451,296
Foreign Government and Agency Securities [Member]
Available-for-sale securities
Amortized Cost	313,168	197,932
Available-for-sale Securities, Gross Unrealized Gains (Instant)	0	0
Available-for-sale Securities, Gross Unrealized Losses (Instant)	0	0
Estimated Fair Value	313,168	197,932
Mortgage-Backed Securities [Member]
Available-for-sale securities
Amortized Cost	1,200,071	1,035,598
Available-for-sale Securities, Gross Unrealized Gains (Instant)	12,848	8,809
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(5,380)	(4,171)
Estimated Fair Value	1,207,539	1,040,236
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	114,285	48,263
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	460,845	491,049
Asset-backed Securities [Member]
Available-for-sale securities
Amortized Cost	216,068	211,487
Available-for-sale Securities, Gross Unrealized Gains (Instant)	1,151	1,130
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(605)	(159)
Estimated Fair Value	216,614	212,458
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	20,793	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	101,831	75,009
Debt Mutual Fund [Member]
Available-for-sale securities
Amortized Cost	101,350	101,350
Available-for-sale Securities, Gross Unrealized Gains (Instant)	0	0
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(9,449)	(6,150)
Estimated Fair Value	91,901	95,200
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	91,901	56,592
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	91,901	95,200
Bank Loans [Member]
Available-for-sale securities
Amortized Cost	102,092	98,131
Available-for-sale Securities, Gross Unrealized Gains (Instant)	25	29
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(102)	(60)
Estimated Fair Value	102,015	98,100
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	42,832	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	77,190	65,085
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities
Amortized Cost	207,847	40,132
Available-for-sale Securities, Gross Unrealized Gains (Instant)	432	133
Available-for-sale Securities, Gross Unrealized Losses (Instant)	(1,809)	(325)
Estimated Fair Value	206,470	39,940
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,150	944
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	$ 143,911	$ 6,928

Financial Instruments (Details

Financial Instruments (Details 1) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	$ 750,635	$ 1,095,972
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(5,672)	(5,009)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	285,805	118,042
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(12,630)	(6,331)
Available-for-Sale Securities, Fair Value, Total	1,036,440	1,214,014
Available-for-Sale Securities, Gross Unrealized Losses, Total	(18,302)	(11,340)
Non-financial institution securities [Member]
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	52,756	7,190
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(230)	(6)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Available-for-Sale Securities, Fair Value, Total	52,756	7,190
Available-for-Sale Securities, Gross Unrealized Losses, Total	(230)	(6)
Auction Rate Securities [Member]
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Available-for-Sale Securities, 12 Months or Greater, Fair Value	9,977	10,312
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(523)	(188)
Available-for-Sale Securities, Fair Value, Total	9,977	10,312
Available-for-Sale Securities, Gross Unrealized Losses, Total	(523)	(188)
Municipal Bonds [Member]
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	10,138	10,014
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(44)	(94)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	3,867	1,931
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(89)	(58)
Available-for-Sale Securities, Fair Value, Total	14,005	11,945
Available-for-Sale Securities, Gross Unrealized Losses, Total	(133)	(152)
U.S. Government and Agency Securities [Member]
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	84,024	451,296
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(71)	(129)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Available-for-Sale Securities, Fair Value, Total	84,024	451,296
Available-for-Sale Securities, Gross Unrealized Losses, Total	(71)	(129)
Mortgage-Backed Securities [Member]
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	346,560	442,786
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(3,916)	(2,901)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	114,285	48,263
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,464)	(1,270)
Available-for-Sale Securities, Fair Value, Total	460,845	491,049
Available-for-Sale Securities, Gross Unrealized Losses, Total	(5,380)	(4,171)
Asset-backed Securities [Member]
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	81,038	75,009
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(502)	(159)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	20,793	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(103)	0
Available-for-Sale Securities, Fair Value, Total	101,831	75,009
Available-for-Sale Securities, Gross Unrealized Losses, Total	(605)	(159)
Debt Mutual Fund [Member]
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	0	38,608
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(1,392)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	91,901	56,592
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(9,449)	(4,758)
Available-for-Sale Securities, Fair Value, Total	91,901	95,200
Available-for-Sale Securities, Gross Unrealized Losses, Total	(9,449)	(6,150)
Bank Loans [Member]
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	34,358	65,085
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(31)	(60)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	42,832	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(71)	0
Available-for-Sale Securities, Fair Value, Total	77,190	65,085
Available-for-Sale Securities, Gross Unrealized Losses, Total	(102)	(60)
Commercial Mortgage Backed Securities [Member]
Fair values and gross unrealized losses of the investments
Available-for-Sale Securities, Less Than 12 Months, Fair Value	141,761	5,984
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(878)	(268)
Available-for-Sale Securities, 12 Months or Greater, Fair Value	2,150	944
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(931)	(57)
Available-for-Sale Securities, Fair Value, Total	143,911	6,928
Available-for-Sale Securities, Gross Unrealized Losses, Total	$ (1,809)	$ (325)

Financial Instruments (Detail56

Financial Instruments (Details 2) $ in Thousands	Apr. 02, 2016USD ($)
Investments, All Other Investments [Abstract]
Marketable debt securities with contractual maturities greater than one year but classified as short-term investment	$ 1,920,000
Amortized cost and estimated fair value of marketable debt securities
Amortized Cost Due in one year or less	1,120,486
Amortized Cost Due after one year through five years	545,350
Amortized Cost Due after five years through ten years	264,616
Amortized Cost Due after ten years	1,229,856
Amortized Cost Total	3,160,308
Estimated Fair Value Due in one year or less	1,120,487
Estimated Fair Value Due after one year through five years	545,457
Estimated Fair Value Due after five years through ten years	265,529
Estimated Fair Value Due after ten years	1,236,250
Estimated Fair Value Total	$ 3,167,723

Financial Instruments (Detail57

Financial Instruments (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Information on sale of available-for-sale securities
Gross realized gains on sale of available-for-sale securities	$ 1,248	$ 15,101	$ 2,080
Gross realized losses on sale of available-for-sale securities	(878)	(3,223)	(2,412)
Net realized gains (losses) on sale of available-for-sale securities	370	11,878	(332)
Amortization of premiums on available-for-sale securities	$ 26,613	$ 23,579	$ 27,293

Derivative Financial Instrume58

Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 83,506	$ 114,042
Singapore Dollar [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	26,978	43,901
Euro [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	19,123	29,973
Indian Rupee [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	23,302	22,228
British Pound [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	10,716	12,946
Japanese Yen [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 3,387	$ 4,994

Derivative Financial Instrume59

Derivative Financial Instruments (Details 1) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Derivative Instruments located on Condensed Consolidated Balance sheet
Liability Derivatives, Fair Value	$ 1,417	$ 9,320
Prepaid expenses and other current assets
Derivative Instruments located on Condensed Consolidated Balance sheet
Asset Derivatives, Fair Value	2,161	0
Other accrued liabilities
Derivative Instruments located on Condensed Consolidated Balance sheet
Liability Derivatives, Fair Value	$ 1,417	$ 9,320

Derivative Financial Instrume60

Derivative Financial Instruments (Details 2) - Cash Flow Hedging [Member] - USD ($) $ in Thousands		12 Months Ended
		Apr. 02, 2016	Mar. 28, 2015
Foreign Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of losses recognized in other comprehensive income on derivative (effective portion of cash flow hedging)		$ (7,779)	$ (8,321)
Interest And Other Expense, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gains (losses) reclassified from accumulated other comprehensive income into income (effective portion)	[1]	(7,225)	(2,753)
Amount of gains (losses) recorded (ineffective portion)	[1]	$ 10	$ 43
[1]	Recorded in Interest and Other Expense location within the consolidated statements of income.

Derivative Financial Instrume61

Derivative Financial Instruments (Details Textual)	12 Months Ended
	Apr. 02, 2016
Derivative [Line Items]
Hedging Program number of years	2 years
Maturity of Foreign Currency Derivatives	May 12, 2017

Stock-Based Compensation Plan62

Stock-Based Compensation Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Stock Based compensation expense
Income tax effect	$ (56,300)	$ (55,000)	$ (67,000)
Employee Stock Purchase Plan [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	111,984	99,859	94,314
Income tax effect	(34,119)	(29,268)	(27,327)
Net stock-based compensation effect on net income	77,865	70,591	66,987
Employee Stock Purchase Plan [Member] | Cost of Revenues [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	7,977	8,101	7,602
Employee Stock Purchase Plan [Member] | Research and Development [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	59,692	50,185	46,197
Employee Stock Purchase Plan [Member] | Selling, General and Administrative Expenses [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	44,315	40,994	40,515
Employee Stock Purchase Plan [Member] | Restructuring Charges [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	$ 0	$ 579	$ 0

Stock-Based Compensation Plan63

Stock-Based Compensation Plans (Details 1)	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Employee Stock Purchase Plan [Member]
Weighted average assumptions in estimation of fair value per share of stock
Expected Term	1 year 3 months 18 days	1 year 3 months 18 days	1 year 3 months 18 days
Expected Volatility	26.00%	25.00%	24.00%
Risk-free interest rate	0.50%	0.30%	0.20%
Dividend yield	2.70%	2.90%	2.40%
Restricted Stock Units (RSUs) [Member]
Weighted average assumptions in estimation of fair value per share of stock
Risk-free interest rate	1.30%	0.80%	0.70%
Dividend yield	2.80%	2.50%	2.50%

Stock-Based Compensation Plan64

Stock-Based Compensation Plans (Details 2) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, closing price per share		$ 47.62
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Vested		1,241	3,173
Number of Shares, Expected to vest		15
Number of Shares, Total vested and expected to vest		1,256
Number of Shares, Total outstanding		1,257	3,247	5,280	12,753
Weighted-Average Exercise Price Per Share, Vested (in dollars per share)		$ 25.33	$ 24.59
Weighted-Average Exercise Price Per Share, Expected to vest (in dollars per share)		31.74
Weighted-Average Exercise Price Per Share, Total vested and expected to vest (in dollars per share)		25.41
Weighted-Average Exercise Price Per Share, Total outstanding (in dollars per share)		$ 25.42	$ 24.81	$ 25.22	$ 28.01
Weighted-Average Remaining Contractual Term, Vested (in years)		11 months 22 days
Weighted Average Remaining Contractual Term, Expected to vest (in years)		1 year 8 months 22 days
Weighted Average Remaining Contractual Term, Total vested and expected to vest (in years)		11 months 25 days
Weighted Average Remaining Contractual Term, Total outstanding (in years)		11 months 25 days
Aggregate Intrinsic Value, Vested	[1]	$ 27,653
Aggregate Intrinsic Value, Expected to vest	[1]	246
Aggregate Intrinsic Value, Total vested and expected to vest	[1]	27,899
Aggregate Intrinsic Value, Total outstanding	[1]	$ 27,917
[1]	These amounts represent the difference between the exercise price and $47.62, the closing price per share of Xilinx's stock on April 2, 2016, for all in-the-money options outstanding.

Stock-Based Compensation Plan65

Stock-Based Compensation Plans (Details 3) - shares shares in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Shares Available for Grant Under Option Plan [Roll Forward]
Shares Available for Grant, Ending Balance	14,200
2007 Equity Plan [Member]
Shares Available for Grant Under Option Plan [Roll Forward]
Shares Available for Grant, Beginning Balance	15,373	15,037	15,990
Shares Available for Grant, Additional share reserved		3,000	2,000
Shares Available for Grant, Stock options granted	0	0	(8)
Shares Available for Grant, Stock options cancelled	10	6	26
Shares Available for Grant, RSUs granted	(3,088)	(3,201)	(3,297)
Shares Available for Grant, RSUs cancelled	634	531	326
Shares Available for Grant, Ending Balance	12,929	15,373	15,037

Stock-Based Compensation Plan66

Stock-Based Compensation Plans (Details 4) - Employee Stock Option [Member] - $ / shares shares in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0	$ 0	$ 41.08
Summary of option plans activity
Number of Shares, Beginning balance	3,247	5,280	12,753
Number of Shares, Exercised	(1,977)	(2,009)	(7,421)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 24.38	$ 25.80	$ 29.95
Number of Shares, Forfeited/cancelled/expired	(13)	(24)	(60)
Number of Shares, Ending balance	1,257	3,247	5,280
Number of Shares, Options exercisable	1,241	3,173
Weighted-Average Exercise Price Per Share, Beginning balance	$ 24.81	$ 25.22	$ 28.01
Weighted-Average Exercise Price Per Share, Forfeited/cancelled/expired	32.10	32.22	35.61
Weighted-Average Exercise Price Per Share, Ending balance	25.42	24.81	$ 25.22
Weighted-Average Exercise Price Per Share, Options exercisable	$ 25.33	$ 24.59

Stock-Based Compensation Plan67

Stock-Based Compensation Plans (Details 5) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	$ 2	$ 2
Exercise Price Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit	$ 18.97
Exercise price range, upper range limit	19.79
Exercise Price Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit	20.57
Exercise price range, upper range limit	29.27
Exercise Price Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit	30.21
Exercise price range, upper range limit	$ 38.56
Employee Stock Option [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	1,257	3,247	5,280	12,753
Options Outstanding, Weighted Average Remaining Contractual Term (in years)	11 months 25 days
Options Outstanding, Weighted Average Exercise Price Per Share (in dollars per share)	$ 25.42	$ 24.81	$ 25.22	$ 28.01
Options Exercisable	1,241	3,173
Options Exercisable, Weighted Average Exercise Price Per Share (in dollars per share)	$ 25.33	$ 24.59
Employee Stock Option [Member] | Exercise Price Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	5
Options Outstanding, Weighted Average Remaining Contractual Term (in years)	2 months 6 days
Options Outstanding, Weighted Average Exercise Price Per Share (in dollars per share)	$ 19.22
Options Exercisable	5
Options Exercisable, Weighted Average Exercise Price Per Share (in dollars per share)	$ 19.22
Employee Stock Option [Member] | Exercise Price Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	1,105
Options Outstanding, Weighted Average Remaining Contractual Term (in years)	9 months 5 days
Options Outstanding, Weighted Average Exercise Price Per Share (in dollars per share)	$ 24.32
Options Exercisable	1,105
Options Exercisable, Weighted Average Exercise Price Per Share (in dollars per share)	$ 24.32
Employee Stock Option [Member] | Exercise Price Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	147
Options Outstanding, Weighted Average Remaining Contractual Term (in years)	2 years 9 months 1 day
Options Outstanding, Weighted Average Exercise Price Per Share (in dollars per share)	$ 33.90
Options Exercisable	131
Options Exercisable, Weighted Average Exercise Price Per Share (in dollars per share)	$ 33.84

Stock-Based Compensation Plan68

Stock-Based Compensation Plans (Details 6) - Restricted Stock Units (RSUs) [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Summary of restricted stock unit activity and related information
Number of Shares, Beginning balance		6,873	6,901	5,996
Number of Shares, Granted		3,088	3,201	3,297
Number of Shares, Vested	[1]	(2,691)	(2,698)	(2,066)
Number of Shares, Cancelled		(592)	(531)	(326)
Number of Shares, Ending balance		6,678	6,873	6,901
Number of Shares, Expected to vest		5,426
Weighted-Average Grant-Date Fair Value Per Share, Beginning balance (in dollars per share)		$ 39.07	$ 35.08	$ 30.83
Weighted-Average Grant-Date Fair Value Per Share, Granted (in dollars per share)		41.19	43.11	38.90
Weighted-Average Grant-Date Fair Value Per Share, Vested (in dollars per share)	[1]	37.23	33.82	29.25
Weighted-Average Grant-Date Fair Value Per Share, Ending balance (in dollars per share)		40.74	39.07	35.08
Weighted-Average Grant-Date Fair Value Per Share, Expected to vest (in dollars per share)		$ 40.71
Weighted Average Remaining Contractual Term (in years)		2 years 3 months 22 days
Weighted Average Remaining Contractual Term, Expected to vest (in years)		2 years 3 months 22 days
Aggregate Intrinsic Value	[2]	$ 318,023
Aggregate Intrinsic Value, Expected to vest	[2]	$ 258,375
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value		$ 39.43	$ 32.91	$ 32.28
[1]	The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements.
[2]	Aggregate intrinsic value for RSUs represents the closing price per share of Xilinx's stock on April 2, 2016 of $47.62, multiplied by the number of RSUs outstanding or expected to vest as of April 2, 2016.

Stock-Based Compensation Plan69

Stock-Based Compensation Plans (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized stock-based compensation, included in inventory	$ 2,000	$ 2,000
Tax benefit associated with stock option exercises and other awards	$ 56,300	55,000	$ 67,000
Shares available for grant	14,200
Percentage of fair market value of stock on the grant date	100.00%
Award vesting period	4 years
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options vested during the period	$ 344
Nonvested awards, stock-based compensation cost not yet recognized	$ 64
Nonvested awards, stock-based compensation cost not yet recognized, weighted-average recognition period	7 months
Pre-tax intrinsic value of options exercised in period	$ 42,600	$ 37,300
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value per share of stock options granted	$ 11.20	$ 9.17	$ 11.11
Nonvested awards, stock-based compensation cost not yet recognized	$ 12,900
Nonvested awards, stock-based compensation cost not yet recognized, weighted-average recognition period	9 months 14 days
Shares available for grant	9,400
Stock Purchase Plan, Exercise period	6 months
Employee Stock Purchase Plan annual earnings Maximum	$ 21
Percentage of Employee Stock Purchase Plan participation	81.00%
Percentage Of Employee Stock Purchase plan Lower Fair Market Value	85.00%
Stock offering period	24 months
Stock Issued During Period, Shares, Employee Stock Purchase Plans	1,100	1,200	1,200
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 37,600	$ 39,000	$ 37,900
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value per share of RSUs and stock purchase rights granted	$ 41.19	$ 43.11	$ 38.90
Nonvested awards, stock-based compensation cost not yet recognized	$ 179,700
Nonvested awards, stock-based compensation cost not yet recognized, weighted-average recognition period	2 years 6 months
Fair value of restricted stock units vested during the period	$ 100,200
2007 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant	12,929	15,373	15,037	15,990
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	7 years
Prior to April 1, 2007 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Maximum [Member] | Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage Of Participation Of Employee Annual Earnings	15.00%

Balance Sheet Information Payab

Balance Sheet Information Payables and Accruals (Details) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Payables and Accruals [Abstract]
Accrued Salaries	$ 73,823	$ 79,312
Deferred Compensation Liability, Current	74,180	70,163
Other Employee Related Liabilities, Current	6,291	7,125
Employee-related Liabilities, Current	154,294	156,600
Interest Payable	5,591	5,432
Forward currency exchange contracts	1,417	9,320
Restructuring Reserve	1,164	14,634
Other Liabilities	36,936	35,290
Other Accrued Liabilities	$ 45,108	$ 64,676

Restructuring Charges (Details)

Restructuring Charges (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 28, 2015USD ($)position	Apr. 02, 2016USD ($)	Mar. 28, 2015USD ($)	Mar. 29, 2014USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 14,634	$ 1,164	$ 14,634
Number of positions eliminated in restructuring | position	120
Number of positions eliminated in restructuring, percent (less than)	3.00%
Restructuring charges	$ 24,491	$ 0	$ 24,491	$ 0

Commitments (Details)

Commitments (Details) $ in Thousands	Apr. 02, 2016USD ($)
Future Minimum Lease Payments Under Non-Cancelable Operating Leases
2,017	$ 5,106
2,018	3,138
2,019	2,885
2,020	2,078
2,021	1,494
Thereafter	956
Total	$ 15,657

Commitments (Details Textual)

Commitments (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Loss Contingencies [Line Items]
Aggregate future rental income to be received	$ 2.7
Rent expense, net of rental income	4.5	$ 3.2	$ 3.1
Other commitments	108.9
Non-cancelable license obligations	$ 33.8
Software and Maintenance License Obligations Expiration Date	Dec. 30, 2018
Purchase Obligation	$ 15
Minimum [Member]
Loss Contingencies [Line Items]
Purchase Commitments, Period for Payment	3 months
Maximum [Member]
Loss Contingencies [Line Items]
Purchase Commitments, Period for Payment	6 months
Lease Agreements [Member]
Loss Contingencies [Line Items]
Lease Expiration Date	Oct. 31, 2021
Capital Lease Obligations [Member]
Loss Contingencies [Line Items]
Lease Expiration Date	Nov. 30, 2035

Net Income Per Common Share (De

Net Income Per Common Share (Details) - shares shares in Millions	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Debt Instrument [Line Items]
Antidilutive shares excluded from computation of dilutive net income per common share	4.6	4.1	5.1

Net Income Per Common Share E75

Net Income Per Common Share Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended																12 Months Ended
	Apr. 02, 2016	[1]	Jan. 02, 2016	[1]	Sep. 26, 2015	[1]	Jun. 27, 2015	[1]	Mar. 28, 2015	[2]	Dec. 27, 2014	[2]	Sep. 27, 2014	[2]	Jun. 28, 2014	[2]	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Earnings Per Share [Abstract]
Net income	$ 145,035		$ 130,819		$ 127,298		$ 147,715		$ 134,623		$ 168,466		$ 171,516		$ 173,611		$ 550,867	$ 648,216	$ 630,388
Weighted Average Number of Shares Outstanding, Basic	255,467		256,450		257,640		258,021		260,857		262,881		265,942		267,648		257,184	265,480	266,431
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements																	2,260	3,257	4,508
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities and Warrants																	9,223	7,386	8,544
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities																	0	0	7,913
Weighted Average Number of Shares Outstanding, Diluted	268,462		269,611		266,046		270,730		269,514		273,795		275,800		281,579		268,667	276,123	287,396
Earnings Per Share, Basic	$ 0.57		$ 0.51		$ 0.49		$ 0.57		$ 0.52		$ 0.64		$ 0.64		$ 0.65		$ 2.14	$ 2.44	$ 2.37
Earnings Per Share, Diluted	$ 0.54		$ 0.49		$ 0.48		$ 0.55		$ 0.50		$ 0.62		$ 0.62		$ 0.62		$ 2.05	$ 2.35	$ 2.19
[1]	Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2016 was a 53-week year and each quarter was a 13-week quarter except the third quarter, which was a 14-week quarter.
[2]	Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2015 was a 52-week year and each quarter was a 13-week quarter.

Net Income Per Common Share Net

Net Income Per Common Share Net Income Per Common Share (Details 1) - 2017 Convertible Notes - $ / shares shares in Millions	12 Months Ended
	Mar. 28, 2015	Apr. 02, 2016
Short-term Debt [Line Items]
Maximum number of common shares to be purchased under call option		20.5
Price Per Share To Be Purchase By Company Under Call Option	$ 29.26

Interest and Other Expense, N77

Interest and Other Expense, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Components of interest and other expense
Interest income	$ 40,180	$ 35,876	$ 28,079
Interest expense	(55,456)	(55,431)	(54,035)
Other income (expense), net	(17,780)	4,553	(3,597)
Interest and other expense, net	$ (33,056)	$ (15,002)	$ (29,553)

Accumulated Other Comprehensi78

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Components of accumulated other comprehensive income (loss)
Accumulated unrealized losses on available-for-sale securities, net of tax	$ (1,260)	$ (238)
Accumulated unrealized gain (losses) on hedging transactions, net of tax	256	(7,523)
Accumulated cumulative translation adjustment, net of tax	(5,627)	(3,388)
Accumulated other comprehensive loss	$ (6,631)	$ (11,149)

Debt and Credit Facility (Detai

Debt and Credit Facility (Details) - USD ($)	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Long Term Debt [Line Items]
Long-term Debt, Excluding Current Maturities	$ 995,835,000	$ 994,839,000
Amortization of Debt Discount (Premium)	12,048,000	12,022,000	$ 16,319,000
Proceeds from Issuance of Long-term Debt	$ 0	0	990,149,000
Line of Credit Facility, Expiration Date	Dec. 31, 2016
Line of Credit Facility, Maximum Borrowing Capacity	$ 250,000,000
Line of Credit Facility, Average Outstanding Amount	$ 0
2019 Debt instrument, Maturity Date	Mar. 15, 2019
2021 Debt instrument, Maturity Date	Mar. 15, 2021
2037 Convertible Notes
Long Term Debt [Line Items]
Interest Expense, Debt, Excluding Amortization			20,065,000
Amortization of Financing Costs			223,000
Amortization of embedded derivative			58,000
Amortization of Debt Discount (Premium)			5,187,000
Fair value adjustment of embedded derivative			1,090,000
Interest Expense, Debt			24,443,000
2017 Convertible Notes
Long Term Debt [Line Items]
Interest Expense, Debt, Excluding Amortization			15,750,000
Amortization of Financing Costs			1,448,000
Amortization of Debt Discount (Premium)			11,052,000
Interest Expense, Debt			28,250,000
2019 and 2021 Notes Payable [Member]
Long Term Debt [Line Items]
Interest Expense, Debt, Excluding Amortization	$ 25,625,000	25,625,000	1,210,000
Amortization of Financing Costs	586,000	586,000	52,000
Amortization of Debt Discount (Premium)	995,000	970,000	80,000
Interest Expense, Debt	$ 27,206,000	27,181,000	$ 1,342,000
2019 Notes Payable [Member]
Long Term Debt [Line Items]
Discount Percent Of Par	99.477%
Debt Instrument, Face Amount	$ 500,000,000	500,000,000
Debt Instrument, Unamortized Discount	$ 1,560,000	2,073,000
2021 Notes Payable [Member]
Long Term Debt [Line Items]
Discount Percent Of Par	99.281%
Debt Instrument, Face Amount	$ 500,000,000	500,000,000
Debt Instrument, Unamortized Discount	$ 2,605,000	$ 3,088,000

Debt and Credit Facility (Det80

Debt and Credit Facility (Details 1) $ / shares in Units, shares in Millions	Mar. 12, 2014USD ($)	Apr. 02, 2016USD ($)$ / sharesshares	Mar. 28, 2015USD ($)$ / shares	Mar. 29, 2014USD ($)
Short-term Debt [Line Items]
Amortization of Debt Discount (Premium)		$ 12,048,000	$ 12,022,000	$ 16,319,000
Gains (Losses) on Extinguishment of Debt		0	0	$ (9,848,000)
2037 Convertible Notes
Short-term Debt [Line Items]
Debt Instrument Unamortized Discount Of Embedded Derivative From Date Of Issuance	$ 1,300,000
Extinguishment of Debt, Amount	1,230,000,000
Debt Instrument, Face Amount	689,600,000
Amortization of Financing Costs		0	0
Debt Instrument, Unamortized Discount	315,400,000
Unamortized Debt Issuance Expense	5,100,000
Amortization of embedded derivative		0	0
Amortization of Debt Discount (Premium)		0	0
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net		0	0
Debt Instrument Carrying Amount Of Liability Component	377,600,000
Debt Instrument, Convertible, Carrying Amount of Equity Component	$ 856,500,000
Gains (Losses) on Extinguishment of Debt			(9,800,000)
Interest Expense, Debt, Excluding Amortization		0	0
Interest Expense, Debt		0	$ 0
2017 Convertible Notes
Short-term Debt [Line Items]
Base conversion, block amount of senior convertible debenture		$ 1,000
Debt Instrument, Convertible, Conversion Ratio		34.1754
Convertible debt, conversion price | $ / shares		$ 29.26
Debt Instrument, Convertible, Remaining Discount Amortization Period		1 year 2 months 19 days
Debt instrument, Convertible, If-converted Value		$ 970,000,000
Price Per Share To Be Purchase By Company Under Call Option | $ / shares			$ 29.26
Warrants, number of shares the holders have the right to purchase | shares		20.5
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares		$ 41.45
Maximum number of common shares to be purchased under call option | shares		20.5
Debt Instrument, Face Amount		$ 600,000,000	$ 600,000,000
Amortization of Financing Costs		1,448,000	1,448,000
Debt Instrument, Unamortized Discount		18,135,000	33,679,000
Amortization of Debt Discount (Premium)		11,052,000	11,052,000
Debt Instrument Carrying Amount Of Liability Component		587,106,000	576,053,000
Hedge Accounting Adjustment - Sale Of Interest Rate Swap		5,241,000	9,732,000
Debt Instrument, Convertible, Carrying Amount of Equity Component		66,415,000	66,415,000
Interest Expense, Debt, Excluding Amortization		15,750,000	15,750,000
Interest Expense, Debt		$ 28,250,000	$ 28,250,000

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014	Nov. 17, 2014
Share Repurchases [Line Items]
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Treasury shares	0	0
Stock Repurchased During Period, Shares	9,700,000	15,300,000
Stock Repurchased and Retired During Period, Value	$ 443,181	$ 649,990	$ 242,094
Repurchase Program 2012 [Member]
Share Repurchases [Line Items]
Total amount available for future repurchases	0
Repurchase Program Two Thousand Fourteen [Member]
Share Repurchases [Line Items]
Amount authorized for common stock repurchase				$ 800,000
Total amount available for future repurchases	204,200
Repurchases of Common Stock	$ 595,800

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Federal:
Current	$ 21,366	$ 61,308	$ 16,692
Deferred	42,146	17,121	48,021
Federal income tax expense (benefit), Total	63,512	78,429	64,713
State:
Current	2,447	3,330	1,333
Deferred	1,781	1,803	5,954
State income tax expense (benefit), Total	4,228	5,133	7,287
Foreign:
Current	18,016	9,433	7,264
Deferred	202	(1,135)	(126)
Foreign income tax expense (benefit), Total	18,218	8,298	7,138
Total	$ 85,958	$ 91,860	$ 79,138

Income Taxes (Details 1)

Income Taxes (Details 1) - USD ($) $ in Thousands

3 Months Ended

12 Months Ended

Apr. 02, 2016

[1],[2]

Jan. 02, 2016

[1],[2]

Sep. 26, 2015

[1],[2]

Jun. 27, 2015

[1],[2]

Mar. 28, 2015

[3],[4]

Dec. 27, 2014

[3],[4]

Sep. 27, 2014

[3],[4]

Jun. 28, 2014

[3],[4]

Apr. 02, 2016

Mar. 28, 2015

Mar. 29, 2014

Income Tax Disclosure [Abstract]

Domestic

$ 37,568

$ 110,881

$ 83,617

Foreign

599,257

629,195

625,909

Income before income taxes

$ 169,838

$ 155,051

$ 143,969

$ 167,967

$ 159,478

$ 186,002

$ 194,318

$ 200,278

$ 636,825

$ 740,076

$ 709,526

[1]

Net income per common share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per common share information may not equal the annual net income per common sha

[2]

Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2016 was a 53-week year and each quarter was a 13-week quarter except the third quarter, which was a 14-week quarter.

[3]

Income before income taxes for the fourth quarter of fiscal 2015 included restructuring charges of $24,491.

[4]

Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2015 was a 52-week year and each quarter was a 13-week quarter.

Income Taxes (Details 2)

Income Taxes (Details 2) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Apr. 02, 2016	[1],[2]	Jan. 02, 2016	[1],[2]	Sep. 26, 2015	[1],[2]	Jun. 27, 2015	[1],[2]	Mar. 28, 2015	[3],[4]	Dec. 27, 2014	[3],[4]	Sep. 27, 2014	[3],[4]	Jun. 28, 2014	[3],[4]	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Income Tax Disclosure [Abstract]
Income before provision for taxes	$ 169,838		$ 155,051		$ 143,969		$ 167,967		$ 159,478		$ 186,002		$ 194,318		$ 200,278		$ 636,825	$ 740,076	$ 709,526
Federal statutory tax rate																	35.00%	35.00%	35.00%
Computed expected tax																	$ 222,889	$ 259,027	$ 248,334
State taxes, net of federal benefit																	3,177	2,458	4,664
Foreign earnings at lower tax rates																	(112,942)	(141,372)	(143,336)
Tax credits																	(25,211)	(26,633)	(23,389)
Other																	(1,955)	(1,620)	(7,135)
Total																	$ 85,958	$ 91,860	$ 79,138
[1]	Net income per common share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per common share information may not equal the annual net income per common sha
[2]	Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2016 was a 53-week year and each quarter was a 13-week quarter except the third quarter, which was a 14-week quarter.
[3]	Income before income taxes for the fourth quarter of fiscal 2015 included restructuring charges of $24,491.
[4]	Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2015 was a 52-week year and each quarter was a 13-week quarter.

Income Taxes (Details 3)

Income Taxes (Details 3) - USD ($) $ in Thousands	Apr. 02, 2016	Mar. 28, 2015
Deferred tax assets:
Stock-based compensation	$ 22,128	$ 18,233
Deferred income on shipments to distributors	9,307	9,207
Accrued expenses	32,771	28,318
Tax credit carryforwards	95,424	86,650
Deferred compensation plan	27,412	26,079
Deferred Tax Assets, Investments	8,265	10,247
Other	11,538	10,706
Deferred tax assets, gross	206,845	189,440
Valuation allowance	(62,179)	(52,552)
Total deferred tax assets	144,666	136,888
Deferred tax liabilities:
Unremitted foreign earnings	(335,522)	(280,322)
Convertible debt	(2,349)	(3,220)
Other	(1,699)	(3,987)
Deferred Tax Liabilities, Gross	(339,570)	(287,529)
Deferred Tax Liabilities, Net	$ (194,904)	$ (150,641)

Income Taxes (Details 4)

Income Taxes (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance as of beginning of fiscal year	$ 30,089	$ 26,398
Increases in tax positions for prior years	786	97
Decreases in tax positions for prior years	(606)	(37)
Increases in tax positions for current year	4,757	4,822
Settlements	(85)	0
Lapse in statute of limitations	(942)	(1,191)
Balance as of end of fiscal year	$ 33,999	$ 30,089

Income Taxes (Details Textual)

Income Taxes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Income Taxes (Textual) [Abstract]
Gross unrecognized tax benefits balance	$ 33,999	$ 30,089	$ 26,398
Unrecognized tax benefits that would impact effective tax rate	15,300	12,500
Tax benefit (expense) associated with stock option exercises and employee stock purchase plan	56,300	55,000	67,000
Net operating loss carryforwards	$ 15,400
Net operating loss carryforwards, Expiration dates	Mar. 31, 2030
Hypothetical US tax liability if unremitted foreign earnings were remitted	$ 1,040,000
Long-term deferred tax assets	66,600	59,700
Deferred tax assets, valuation allowance	62,179	52,552
Permanently Invested Outside U.S. [Abstract]
Unremitted foreign earnings	3,100,000
State [Member]
Income Taxes (Textual) [Abstract]
Tax credit carryforwards	167,500
Tax credit carryforwards, valuation allowance	$ 95,700
Singapore [Member]
Income Taxes (Textual) [Abstract]
Statutory tax rate prior to income tax holiday	17.00%
Effective tax rate following income tax holiday	0.00%
Benefit from income tax holiday	$ 51,300	$ 66,000	$ 60,300
Benefit from income tax holiday, per share (in dollars per share)	$ 0.19	$ 0.24	$ 0.21
Additional Paid-in Capital [Member]
Income Taxes (Textual) [Abstract]
Tax benefit (expense) associated with stock option exercises and employee stock purchase plan	$ 11,400	$ 13,900	$ 26,400

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Segment Reporting Information [Line Items]
Net revenues	$ 2,213,881	$ 2,377,344	$ 2,382,531
Net long-lived assets	283,346	301,038	355,089
North America [Member]
Segment Reporting Information [Line Items]
Net revenues	710,662	738,334	707,692
United States [Member]
Segment Reporting Information [Line Items]
Net revenues	592,422	625,434	610,276
Net long-lived assets	191,400	195,353	237,229
North America, Other [Member]
Segment Reporting Information [Line Items]
Net revenues	118,240	112,900	97,416
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Net revenues	855,866	930,605	939,827
Asia Pacific, Other [Member]
Segment Reporting Information [Line Items]
Net revenues	335,304	357,598	375,013
China [Member]
Segment Reporting Information [Line Items]
Net revenues	520,562	573,007	564,814
Europe [Member]
Segment Reporting Information [Line Items]
Net revenues	424,685	477,102	519,829
Japan [Member]
Segment Reporting Information [Line Items]
Net revenues	222,668	231,303	215,183
Ireland [Member]
Segment Reporting Information [Line Items]
Net long-lived assets	43,011	46,216	48,043
Singapore [Member]
Segment Reporting Information [Line Items]
Net long-lived assets	36,029	43,020	51,569
Foreign, Other [Member]
Segment Reporting Information [Line Items]
Net long-lived assets	12,906	16,449	18,248
Non-US [Member]
Segment Reporting Information [Line Items]
Net long-lived assets	$ 91,946	$ 105,685	$ 117,860

Litigation Settlements and Co89

Litigation Settlements and Contingencies (Details) $ in Millions	12 Months Ended
	Apr. 02, 2016USD ($)
Valley Forge [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought For Each Unspecified Claim	$ 50

Goodwill and Acquisition-Rela90

Goodwill and Acquisition-Related Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015
Gross and net amounts of goodwill and of acquisition-related intangibles
Goodwill	$ 159,296	$ 159,296
Total acquisition-related intangibles, gross	124,246	124,246
Less accumulated amortization	(118,044)	(111,494)
Total	6,202	12,752
Core Technology [Member]
Gross and net amounts of goodwill and of acquisition-related intangibles
Total acquisition-related intangibles, gross	77,640	77,640
Less accumulated amortization	(71,472)	(64,988)
Total	$ 6,168	12,652
Weighted-Average Amortization Life	5 years 7 months
Other Intangibles [Member]
Gross and net amounts of goodwill and of acquisition-related intangibles
Total acquisition-related intangibles, gross	$ 46,606	46,606
Less accumulated amortization	(46,572)	(46,506)
Total	$ 34	$ 100
Weighted-Average Amortization Life	2 years 8 months 12 days

Goodwill and Acquisition-Rela91

Goodwill and Acquisition-Related Intangibles (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of acquisition-related intangibles	$ 6,550	$ 9,537	$ 9,887
Schedule of expected annual amortization expense for acquisition-related intangibles
2,017	4,761
2,018	1,374
2,019	67
Total	$ 6,202	$ 12,752

Employee Benefit Plans (Details

Employee Benefit Plans (Details)	12 Months Ended
	Apr. 02, 2016USD ($)participant	Mar. 28, 2015USD ($)	Mar. 29, 2014USD ($)
Postemployment Benefits [Abstract]
Total contribution to the employee benefit plans	$ 11,000,000	$ 13,000,000	$ 13,200,000
Employer matching contribution limit, as a percentage of employee contribution	50.00%
First part of employee compensation that the employee contributed to their 401(k) accounts	8.00%
The maximum company contribution per employee	$ 4,500
Participants' age limit eligible to make catch up salary deferral contribution	50 years
Percentage of salary deferrals of the eligible annual salary	25.00%
Number of participants in the plan who self direct their contribution into investment option (more than) | participant	187
Employee benefit plan assets	$ 67,000,000	59,200,000
Employee benefit plan obligations	$ 74,200,000	$ 70,200,000

Subsequent Event (Details)

Subsequent Event (Details) - USD ($) $ / shares in Units, $ in Millions	May. 16, 2016	Apr. 26, 2016
Repurchase Program Two Thousand Seventeen [Member]
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount	$ 1,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends Payable, Amount Per Share		$ 0.33

Schedule II - Valuation and Q94

Schedule II - Valuation and Qualifying Accounts (Allowances) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended																12 Months Ended
	Apr. 02, 2016		Jan. 02, 2016	[1]	Sep. 26, 2015	[1]	Jun. 27, 2015		Mar. 28, 2015		Dec. 27, 2014	[2]	Sep. 27, 2014	[2]	Jun. 28, 2014		Apr. 02, 2016	Mar. 28, 2015	Mar. 29, 2014
Supplementary Financial Data [Abstract]
Net revenues	$ 571,066	[1]	$ 566,235		$ 527,572		$ 549,008	[1]	$ 566,900	[2]	$ 593,549		$ 604,262		$ 612,633	[2]	$ 2,213,881	$ 2,377,344	$ 2,382,531
Gross margin	395,267	[1]	387,721		369,932		389,054	[1]	396,521	[2]	413,911		434,645		423,444	[2]	1,541,974	1,668,521	1,639,278
Income before provision for taxes	169,838	[1],[3]	155,051	[3]	143,969	[3]	167,967	[1],[3]	159,478	[2],[4]	186,002	[4]	194,318	[4]	200,278	[2],[4]	636,825	740,076	709,526
Net income	$ 145,035	[1]	$ 130,819		$ 127,298		$ 147,715	[1]	$ 134,623	[2]	$ 168,466		$ 171,516		$ 173,611	[2]	$ 550,867	$ 648,216	$ 630,388
Net income per common share:
Earnings Per Share, Basic	$ 0.57	[1]	$ 0.51		$ 0.49		$ 0.57	[1]	$ 0.52	[2]	$ 0.64		$ 0.64		$ 0.65	[2]	$ 2.14	$ 2.44	$ 2.37
Earnings Per Share, Diluted	$ 0.54	[1]	$ 0.49		$ 0.48		$ 0.55	[1]	$ 0.50	[2]	$ 0.62		$ 0.62		$ 0.62	[2]	$ 2.05	$ 2.35	$ 2.19
Shares used in per share calculations:
Weighted Average Number of Shares Outstanding, Basic	255,467	[1]	256,450		257,640		258,021	[1]	260,857	[2]	262,881		265,942		267,648	[2]	257,184	265,480	266,431
Weighted Average Number of Shares Outstanding, Diluted	268,462	[1]	269,611		266,046		270,730	[1]	269,514	[2]	273,795		275,800		281,579	[2]	268,667	276,123	287,396
Cash dividends per common share (in dollars per share)	$ 0.31	[1]	$ 0.31		$ 0.31		$ 0.31	[1]	$ 0.29	[2]	$ 0.29		$ 0.29		$ 0.29	[2]
Restructuring charges									$ 24,491								$ 0	$ 24,491	$ 0
Gains (Losses) on Extinguishment of Debt																	0	0	9,848
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Beginning of Year							$ 3,353								$ 3,355		3,353	3,355	3,425
Valuation Allowances And Reserves Additions																	0	0	2
Valuation Allowances and Reserves, Deductions																	12	2	72
Valuation Allowances and Reserves, End of Year	$ 3,341								3,353								3,341	3,353	3,355
Allowance for Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Beginning of Year							$ 52,552								$ 43,004		52,552	43,004	26,401
Valuation Allowances And Reserves Additions																	9,834	10,623	19,771
Valuation Allowances and Reserves, Deductions																	207	1,075	3,168
Valuation Allowances and Reserves, End of Year	$ 62,179								$ 52,552								$ 62,179	$ 52,552	$ 43,004
[1]	Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2016 was a 53-week year and each quarter was a 13-week quarter except the third quarter, which was a 14-week quarter.
[2]	Xilinx uses a 52- to 53-week fiscal year ending on the Saturday nearest March 31. Fiscal 2015 was a 52-week year and each quarter was a 13-week quarter.
[3]	Net income per common share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per common share information may not equal the annual net income per common sha
[4]	Income before income taxes for the fourth quarter of fiscal 2015 included restructuring charges of $24,491.