Earnings Per Share (Reconciliation Of Earnings Per Share Basic And Diluted) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 25, 2011	Sep. 30, 2012	Sep. 25, 2011
Earnings Per Share [Line Items]
Income from continuing operations used in computing basic and diluted earnings per share	$ 134,001	$ 183,594	$ 553,286	$ 493,434
Denominator for basic earnings per share- weighted-average common shares	226,020	233,800	227,953	233,989
Effect of dilutive securities-employee stock compensation plan	1,969	2,061	2,117	1,992
Denominator for diluted earnings per share- adjusted weighted-average shares outstanding	227,989	235,861	230,070	235,981
Basic	$ 0.59	$ 0.79	$ 2.43	$ 2.11
Diluted	$ 0.59	$ 0.78	$ 2.40	$ 2.09