Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 30, 2019	Mar. 31, 2018
Earnings Per Share, Diluted [Line Items]
Net income attributable to shareholders		$ 140,735	$ 139,094
Weighted-average shares outstanding - basic		85,400	87,955
Net effect of various dilutive stock-based compensation awards		919	1,080
Weighted-average shares outstanding - diluted		86,319	89,035
Net income per share:
Basic		$ 1.65	$ 1.58
Diluted	[1]	$ 1.63	$ 1.56
Stock Compensation Plan [Member]
Net income per share:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		903	415

[1] Stock-based compensation awards for the issuance of 903 and 415 shares for the first quarter of 2019 and 2018, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive.