Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 648,216us-gaap_NetIncomeLoss	$ 630,388us-gaap_NetIncomeLoss	$ 487,536us-gaap_NetIncomeLoss
Other comprehensive income (loss), net of tax:
Change in net unrealized gains (losses) on available-for-sale securities	7,483	(11,241)	3,343
Reclassification adjustment for gains on available-for-sale securities	(6,832)	(167)	(1,740)
Net change in unrealized gains (losses) on hedging transactions	(11,074)	459	(1,059)
Other Comprehensive Income, Reclassification Adjustment from AOCI on Derivatives, Net of Tax	2,753	1,707	2,792
Cumulative translation adjustment, net	(2,931)	34	(1,940)
Other comprehensive income (loss)	(10,601)	(9,208)	1,396
Total comprehensive income	$ 637,615us-gaap_ComprehensiveIncomeNetOfTax	$ 621,180us-gaap_ComprehensiveIncomeNetOfTax	$ 488,932us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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