Net Income per Share (Details) (USD $) In Thousands, except Per Share data	3 Months Ended				6 Months Ended
	Jul. 02, 2011		Jul. 03, 2010		Jul. 02, 2011		Jul. 03, 2010
Earnings Per Share, Diluted [Line Items]
Net income attributable to shareholders	$ 156,197		$ 116,193		$ 292,506		$ 203,239
Weighted average shares outstanding - basic	115,434		119,228		115,323		119,731
Net effect of various dilutive stock-based compensation awards	2,035		1,357		2,140		1,539
Weighted average shares outstanding - diluted	117,469		120,585		117,463		121,270
Net income per share:
Basic	$ 1.35		$ 0.97		$ 2.54		$ 1.7
Diluted	$ 1.33	[1]	$ 0.96	[1]	$ 2.49	[1]	$ 1.68	[1]
Stock Compensation Plan [Member]
Net income per share:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	398		3,471		342		3,300

[1] (a)Stock-based compensation awards for the issuance of 398 and 342 shares for the second quarter and first six months of 2011 and 3,471 and 3,300 shares for the second quarter and first six months of 2010, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive.