Debt (Schedule Of Debt) (Details) (USD $)	Dec. 31, 2011	Dec. 25, 2010
Debt [Abstract]
Short-term borrowings	$ 15,057,000	$ 53,729,000
Capital lease obligations	18,626,000	16,361,000
Current maturities of long-term debt	2,718,000	2,278,000
Short-term borrowings and current maturities of long-term debt	36,401,000	72,368,000
$400 million senior notes	399,953,000	400,067,000
Capital lease obligations	229,605,000	239,476,000
Other	18,755,000	20,277,000
Total long-term debt	648,313,000	659,820,000
Senior notes, face amount	$ 400,000,000	$ 400,000,000