Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 28, 2020	Mar. 30, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income	$ 162,257	$ 162,012	$ 226,993	$ 241,459	$ 244,640	$ 239,360	$ 215,712	$ 190,038	$ 792,721	$ 889,750	$ 463,981
Basic (in shares)	247,166	250,546	252,399	253,268	253,855	253,060	252,988	252,682	251,732	252,762	249,595
Dilutive effect of employee equity incentive plans									3,211	3,672	2,754
Dilutive effect of 2017 Convertible Notes and warrants									0	0	5,611
Weighted average common shares outstanding-diluted	249,320	252,808	255,269	257,928	258,177	256,374	255,522	255,935	254,943	256,434	257,960
Basic (in dollars per share)	$ 0.66	$ 0.65	$ 0.90	$ 0.95	$ 0.96	$ 0.95	$ 0.85	$ 0.75	$ 3.15	$ 3.52	$ 1.86
Diluted (in dollars per share)	$ 0.65	$ 0.64	$ 0.89	$ 0.94	$ 0.95	$ 0.93	$ 0.84	$ 0.74	$ 3.11	$ 3.47	$ 1.80