Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Mar. 30, 2019	Mar. 31, 2018		Apr. 01, 2017
Income Statement [Abstract]
Revenues	$ 828,361	$ 800,057	$ 746,252	$ 684,370	$ 638,191	$ 598,603	$ 627,419	$ 602,810	$ 3,059,040	$ 2,467,023	[1]	$ 2,356,742	[1]
Cost of revenues									955,868	743,419	[1]	708,632	[1]
Gross margin	558,904	552,154	514,632	477,482	449,250	420,634	441,734	411,986	2,103,172	1,723,604	[1]	1,648,110	[1]
Operating expenses:
Research and development									743,027	639,750		601,443
Selling, general and administrative									398,416	362,329		335,150
Amortization of acquisition-related intangibles									4,930	2,152		5,127
Executive transition costs									0	33,351		0
Total operating expenses									1,146,373	1,037,582		941,720
Operating income									956,799	686,022	[1]	706,390	[1]
Interest and other income (expense), net									11,533	5,357		(8,314)
Income before income taxes	259,680	256,590	239,144	212,917	159,703	166,766	194,017	170,894	968,332	691,379	[1]	698,076	[1]
Provision for income taxes									78,582	227,398	[1]	69,943	[1]
Net income	$ 244,640	$ 239,360	$ 215,712	$ 190,038	$ 145,471	$ (12,485)	$ 173,751	$ 157,244	$ 889,750	$ 463,981	[1]	$ 628,133	[1]
Net income per common share:
Basic (in dollars per share)	$ 0.96	$ 0.95	$ 0.85	$ 0.75	$ 0.57	$ (0.05)	$ 0.70	$ 0.63	$ 3.52	$ 1.86	[1]	$ 2.49	[1]
Diluted (in dollars per share)	$ 0.95	$ 0.93	$ 0.84	$ 0.74	$ 0.56	$ (0.05)	$ 0.67	$ 0.59	$ 3.47	$ 1.80	[1]	$ 2.34	[1]
Shares used in per share calculations:
Basic (in shares)	253,855	253,060	252,988	252,682	254,559	254,089	248,094	247,911	252,762	249,595		252,301
Diluted (in shares)	258,177	256,374	255,522	255,935	257,916	254,089	258,217	265,797	256,434	257,960		268,813

[1] Prior year balances have been restated to reflect the retrospective application of the new revenue recognition accounting standard. Please refer to "Note 2. Summary of Significant Accounting Policies and Concentrations of Risk."