Consolidated Statements of Shareholders' Equity (USD $) In Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Earnings (Loss) [Member]	Treasury Stock [Member]	Total
Balance at Dec. 27, 2009	$ 104,847	$ 467,183	$ 2,720,549	$ 58,631	$ (1,756,438)	$ 1,594,772
Net earnings	0	0	397,752	0	0	397,752
Other comprehensive loss	0	0	0	(50,482)	0	(50,482)
Stock-based compensation transactions	0	22,971	0	0	86,253	109,224
Conversion of debentures	0	102,792	0	0	204,635	307,427
Purchases of common stock	0	0	0	0	(636,681)	(636,681)
Stock-based compensation expense	0	33,015	0	0	377	33,392
Dividends declared	0	0	(139,984)	0	0	(139,984)
Balance at Dec. 26, 2010	104,847	625,961	2,978,317	8,149	(2,101,854)	1,615,420
Net earnings	0	0	385,367	0	0	385,367
Other comprehensive loss	0	0	0	(44,092)	0	(44,092)
Stock-based compensation transactions	0	(8,266)	0	0	37,895	29,629
Purchases of common stock	0	0	0	0	(423,008)	(423,008)
Stock-based compensation expense	0	12,349	0	0	114	12,463
Dividends declared	0	0	(158,264)	0	0	(158,264)
Balance at Dec. 25, 2011	104,847	630,044	3,205,420	(35,943)	(2,486,853)	1,417,515
Net earnings	0	0	335,999	0	0	335,999
Other comprehensive loss	0	0	0	(36,364)	0	(36,364)
Stock-based compensation transactions	0	6,695	0	0	51,015	57,710
Purchases of common stock	0	0	0	0	(100,041)	(100,041)
Stock-based compensation expense	0	19,204	0	0	230	19,434
Dividends declared	0	0	(186,874)	0	0	(186,874)
Balance at Dec. 30, 2012	$ 104,847	$ 655,943	$ 3,354,545	$ (72,307)	$ (2,535,649)	$ 1,507,379