Earnings Per Share (Reconciliation Of Earnings Per Share Basic And Diluted) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Apr. 01, 2012	Mar. 27, 2011
Earnings Per Share [Abstract]
Income from continuing operations used in computing basic and diluted earnings per share	$ 172,035	$ 119,260
Denominator for basic earnings per share- weighted-average common shares	228,988,000	233,820,000
Effect of dilutive securities - employee stock compensation plan	2,296,000	2,083,000
Denominator for diluted earnings per share- adjusted weighted-average shares outstanding	231,284,000	235,903,000
Basic	$ 0.75	$ 0.51
Diluted	$ 0.74	$ 0.51
Shares considered anti-dilutive and excluded from computation	2,400,000	3,300,000