Earnings Per Share (Reconciliation Of The Numerators And The Denominators Of The Basic And Diluted Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Earnings Per Share [Abstract]
Income available to common shareholders, Earnings (Numerator)	$ 98,887	$ 78,835	$ 285,424	$ 215,435
Income available to common shareholders including assumed conversions, Earnings (Numerator)	$ 98,887	$ 78,835	$ 285,424	$ 215,435
Income available to common shareholders, Shares (Denominator)	171,251	169,140	170,643	168,343
Stock options and non-vested shares, Shares (Denominator)	4,619	5,143	4,874	5,313
Income available to common stockholders including assumed conversions, Shares (Denominator)	175,870	174,283	175,517	173,656
Basic earnings per share	$ 0.58	$ 0.47	$ 1.67	$ 1.28
Diluted earnings per share	$ 0.56	$ 0.45	$ 1.63	$ 1.24