Property And Equipment (Schedule Of Assets Held Under Capital Leases) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Capital Leased Assets [Line Items]
Assets held under capital leases, Gross	$ 320,916	$ 317,440
Less accumulated depreciation	(112,250)	(92,695)
Total	208,666	224,745
Buildings [Member]
Capital Leased Assets [Line Items]
Assets held under capital leases, Gross	266,992	267,471
Furniture, Fixtures And Equipment [Member]
Capital Leased Assets [Line Items]
Assets held under capital leases, Gross	$ 53,924	$ 49,969