Leases (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 02, 2013	Mar. 03, 2012
Net book values of assets under capital leases and sale-leasebacks
Accumulated depreciation	$ (103,381)	$ (100,300)
Net value	63,524	69,375
Obligations under financing leases	107,308	119,108
Sale-leaseback obligations	7,876	7,876
Less current obligation	(23,334)	(19,977)
Long-term lease finance obligations	91,850	107,007
Minimum payments for Lease Financing Obligations
2014	32,992
2015	21,543
2016	21,459
2017	19,575
2018	13,674
Later years	45,949
Total minimum lease payments	155,192
Amount representing interest	(40,008)
Present value of minimum lease payments	115,184
Minimum payments for Operating Leases
2014	997,548
2015	959,376
2016	905,031
2017	838,639
2018	751,161
Later years	3,820,698
Total minimum lease payments	8,272,453
Land
Net book values of assets under capital leases and sale-leasebacks
Gross value	6,692	6,695
Buildings
Net book values of assets under capital leases and sale-leasebacks
Gross value	137,206	142,483
Leasehold improvements
Net book values of assets under capital leases and sale-leasebacks
Gross value	1,691	1,236
Equipment
Net book values of assets under capital leases and sale-leasebacks
Gross value	$ 21,316	$ 19,261