Earnings Per Share - Reconciliation Of Earnings Per Share Basic And Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jul. 01, 2018	Apr. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Numerator:
Net income	$ 195,631	$ 127,945	$ 242,338	$ 174,763	$ 323,576	$ 417,101
Denominator:
Basic weighted-average shares outstanding (in shares)	158,813		166,589		159,061	167,364
Effect of dilutive securities - employee stock compensation plan (in shares)	612		615		664	825
Diluted weighted-average shares outstanding (in shares)	159,425		167,204		159,725	168,189
Earnings per common share:
Basic (in dollars per share)	$ 1.23		$ 1.45		$ 2.03	$ 2.49
Diluted (in dollars per share)	$ 1.23		$ 1.45		$ 2.03	$ 2.48