Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2016		Oct. 01, 2016		Jul. 02, 2016		Apr. 02, 2016		Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Earnings Per Share, Diluted [Line Items]
Net income attributable to shareholders	$ 164,518		$ 117,727		$ 134,270		$ 106,235		$ 158,492	$ 109,244	$ 123,932	$ 106,058	$ 522,750		$ 497,726		$ 498,045
Weight-average shares outstanding - basic													90,960		94,608		98,675
Net effect of various dilutive stock-based compensation awards													1,073		1,078		1,272
Weighted average shares outstanding - diluted													92,033		95,686		99,947
Net Income per Share [Abstract]
Basic	$ 1.84	[1]	$ 1.29	[1]	$ 1.46	[1]	$ 1.16	[1]	$ 1.71	$ 1.16	$ 1.30	$ 1.11	$ 5.75		$ 5.26		$ 5.05
Diluted	$ 1.81	[1]	$ 1.28	[1]	$ 1.45	[1]	$ 1.14	[1]	$ 1.69	$ 1.15	$ 1.28	$ 1.09	$ 5.68	[2]	$ 5.20	[2]	$ 4.98	[2]
Stock Compensation Plan [Member]
Net Income per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount													766		658		294

[1] Quarterly net income per share is calculated using the weighted-average shares outstanding during each quarterly period, while net income per share for the full year is calculated using the weighted-average shares outstanding during the year. Therefore, the sum of the net income per share for each of the four quarters may not equal the net income per share for the full year.

[2] Stock-based compensation awards for the issuance of 766 shares, 658 shares, and 294 shares for the years ended December 31, 2016, 2015, and 2014, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive.