Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Basic net income per share
Net income, basic	$ 562,354	$ 532,357	$ 422,599
Shares, basic	119,727	122,651	127,588
Per share amount, basic (in dollars per share)	$ 4.70	$ 4.34	$ 3.31
Dilutive stock options and restricted stock units outstanding, income	$ 0	$ 0	$ 0
Dilutive stock options and restricted stock units outstanding, shares	1,016	820	616
Dilutive stock options and restricted stock units outstanding, per share (in dollars per share)	$ (0.04)	$ (0.03)	$ (0.01)
Diluted net income per share
Weighted Average Number of Shares Outstanding, Diluted, Total	120,743	123,471	128,204
Diluted net income per share (in dollars per share)	$ 4.66	$ 4.31	$ 3.30
Anitdilutive securities excluded from computation of earnings per share	400	3,100	3,900