Schedule II - Valuation and Qualifying Accounts, Supplementary Financial Data Quarterly Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Apr. 03, 2021	Jan. 02, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Apr. 03, 2021	Mar. 28, 2020	Mar. 30, 2019
Supplementary Financial Data [Abstract]
Revenues	$ 850,987	$ 803,404	$ 766,535	$ 726,673	$ 756,169	$ 723,499	$ 833,366	$ 849,632	$ 3,147,599	$ 3,162,666	$ 3,059,040
Gross margin	570,403	547,000	541,719	493,873	528,435	483,478	540,260	562,863	2,152,995	2,115,036	2,103,172
Income before provision for taxes	195,536	176,134	194,646	163,362	189,746	165,843	215,845	262,550	729,678	833,984	968,332
Net income	$ 187,884	$ 170,972	$ 193,816	$ 93,836	$ 162,257	$ 162,012	$ 226,993	$ 241,459	$ 646,508	$ 792,721	$ 889,750
Shares used in per share calculations
Basic (in dollars per share)	$ 0.76	$ 0.70	$ 0.79	$ 0.39	$ 0.66	$ 0.65	$ 0.90	$ 0.95	$ 2.65	$ 3.15	$ 3.52
Diluted (in dollars per share)	$ 0.75	$ 0.69	$ 0.79	$ 0.38	$ 0.65	$ 0.64	$ 0.89	$ 0.94	$ 2.62	$ 3.11	$ 3.47
Shares used in per share calculations:
Basic (in shares)	245,774	245,145	244,837	243,180	247,166	250,546	252,399	253,268	244,257	251,732	252,762
Diluted (in shares)	249,030	248,148	246,763	245,543	249,320	252,808	255,269	257,928	247,229	254,943	256,434
Cash dividends per common share (in dollars per share)	$ 0	$ 0.38	$ 0.38	$ 0.38		$ 0.37	$ 0.37	$ 0.37