Income Taxes (Schedule Of Income Tax Expense (Benefit) Related To Earnings (Loss) From Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Income Taxes [Abstract]
Federal, Current	$ (59,504)	$ (28,278)	$ (41,997)
State, Current	(3,625)	1,408	2,228
Foreign, Current	15,023	849	1,455
Federal, Deferred			233,398
State, Deferred	33	(64)	46,845
Foreign, Deferred	(14,999)	15,615	45,643
Total income tax expense (benefit)	$ (63,072)	$ (10,470)	$ 287,572