Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Apr. 02, 2016	Mar. 28, 2015
Earnings Per Share, Diluted [Line Items]
Net income attributable to shareholders		$ 106,235	$ 106,058
Weighted average shares outstanding - basic		91,514	95,920
Net effect of various dilutive stock-based compensation awards		1,273	1,205
Weighted average shares outstanding - diluted		92,787	97,125
Net income per share:
Basic		$ 1.16	$ 1.11
Diluted	[1]	$ 1.14	$ 1.09
Stock Compensation Plan [Member]
Net income per share:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		1,039	711

[1] Stock-based compensation awards for the issuance of 1,039 and 711 shares for the first quarters of 2016 and 2015, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive.