Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015
Earnings Per Share, Diluted [Line Items]
Net income attributable to shareholders		$ 134,270	$ 123,932	$ 240,505	$ 229,990
Weighted average shares outstanding - basic		91,782	95,638	91,647	95,776
Net effect of various dilutive stock-based compensation awards		911	1,011	1,124	1,098
Weighted average shares outstanding - diluted		92,693	96,649	92,771	96,874
Net income per share:
Basic		$ 1.46	$ 1.30	$ 2.62	$ 2.40
Diluted	[1]	$ 1.45	$ 1.28	$ 2.59	$ 2.37
Stock Compensation Plan [Member]
Net income per share:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		848	709	987	607

[1] Stock-based compensation awards for the issuance of 848,000 and 987,000 shares for the second quarter and first six months of 2016 and 709,000 and 607,000 shares for the second quarter and first six months of 2015, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive.