Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 27, 2020	Mar. 29, 2019
Earnings Per Share [Abstract]
Net earnings available to common shareholders	$ 72,818	$ 86,749
Weighted average shares outstanding for basic earnings per share	167,977	165,616
Dilutive effect of stock options computed using the treasury stock method and the average market price	4,665	5,243
Weighted average shares outstanding for diluted earnings per share	172,642	170,859
Basic earnings per share	$ 0.43	$ 0.52
Diluted earnings per share	$ 0.42	$ 0.51
Antidilutive securities excluded from the computation of diluted earnings per share	2,014	1,681