Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Sep. 29, 2018	Sep. 30, 2017		Sep. 29, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 215,712	$ 173,751	[1]	$ 405,750	$ 330,995	[1]
Other comprehensive income (loss), net of tax:
Change in net unrealized gains (losses) on available-for-sale securities	(2,125)	763		(3,785)	5,935
Reclassification adjustment for (gains) losses on available-for-sale securities	1	(135)		(50)	(105)
Net change in unrealized gains (losses) on hedging transactions	1,190	756		(4,430)	2,198
Reclassification adjustment for gains on hedging transactions	(1,730)	(1,648)		(2,171)	(2,004)
Cumulative translation adjustment, net	(2,142)	678		(4,192)	2,438
Other comprehensive income (loss)	(4,806)	414		(14,628)	8,462
Total comprehensive income	$ 210,906	$ 174,165		$ 391,122	$ 339,457

[1] Prior year balances have been restated to reflect the retrospective application of the new revenue recognition accounting standard. Please refer to "Note 2. Recent Accounting Changes and Accounting Pronouncements."