Derivative Instruments And Hedging (Schedule Of Derivative Instruments By Income Statement Location) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 25, 2010		Dec. 26, 2009
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/(loss) recognized in earnings	$ (2,851)		$ 136		$ (7,596)
Amount of gain/(loss) recognized in OCI	1,646		(1,982)		2,653
Amount of gain/(loss) reclassified from OCI into earnings	1,123		(2,229)		(6,800)
Cost Of Goods Sold And Occupancy Costs [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/(loss) reclassified from OCI into earnings	1,123	[1]	(2,229)	[1]
Cost Of Goods Sold And Occupancy Cost & Store And Warehouse Operating And Selling Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/(loss) reclassified from OCI into earnings					(6,800)	[2]
Commodity Contracts - Fuel [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/(loss) recognized in OCI					2,919
Commodity Contracts - Fuel [Member] | Cost Of Goods Sold And Occupancy Costs [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Percentage of derivative loss recognized in earnings	60.00%		60.00%		60.00%
Commodity Contracts - Fuel [Member] | Cost Of Goods Sold And Occupancy Cost & Store And Warehouse Operating And Selling Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/(loss) recognized in earnings	3,601	[2]	253	[2]	111	[2]
Commodity Contracts - Fuel [Member] | Store And Warehouse Operating And Selling Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Percentage of derivative loss recognized in earnings	40.00%		40.00%		40.00%
Foreign Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/(loss) recognized in OCI	1,646		(1,982)		(266)
Foreign Exchange Contracts [Member] | Cost Of Goods Sold And Occupancy Costs/Miscellaneous Income, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/(loss) recognized in earnings	$ (6,452)	[1]	$ (117)	[1]	$ (7,707)	[1]
Foreign Exchange Contracts [Member] | Cost Of Goods Sold And Occupancy Costs [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Percentage of derivative loss recognized in earnings	60.00%
Foreign Exchange Contracts [Member] | Miscellaneous Income, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Percentage of derivative loss recognized in earnings	40.00%

[1] For 2011, approximately 60% of the amounts are reflected in cost of goods sold and occupancy costs and the remaining 40% of the amounts are reflected in miscellaneous income, net. For 2010 and 2009, all amounts are reflected in cost of goods sold and occupancy costs.

[2] Approximately 60% of the amounts for 2011, 2010, and 2009 are reflected in cost of goods sold and occupancy costs. The remaining 40% of the amounts are reflected in store and warehouse operating and selling expenses.