Income Taxes - Components Of Income Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Domestic									$ 465,798	$ 593,099	$ 788,878
Foreign									91,617	93,530	74,961
Income before provision for income taxes	$ 13,700	$ 117,300	$ 256,100	$ 170,400	$ (4,100)	$ 141,200	$ 319,400	$ 230,200	$ 557,415	$ 686,629	$ 863,839