Leases (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 01, 2014	Mar. 02, 2013
Net book values of assets under capital leases and sale-leasebacks
Accumulated depreciation	$ (113,536)	$ (103,381)
Net value	62,859	63,524
Obligations under financing leases	102,671	107,308
Sale-leaseback obligations	4,740	7,876
Less current obligation	(32,240)	(23,334)
Long-term lease finance obligations	75,171	91,850
Minimum payments for Lease Financing Obligations
2015	40,030
2016	21,228
2017	19,330
2018	13,496
2019	12,370
Later years	33,656
Total minimum lease payments	140,110
Amount representing interest	(32,699)
Present value of minimum lease payments	107,411
Minimum payments for Operating Leases
2015	996,495
2016	953,607
2017	892,261
2018	810,267
2019	713,914
Later years	3,405,091
Total minimum lease payments	7,771,635
Land
Net book values of assets under capital leases and sale-leasebacks
Gross value	5,063	6,692
Buildings
Net book values of assets under capital leases and sale-leasebacks
Gross value	135,581	137,206
Leasehold improvements
Net book values of assets under capital leases and sale-leasebacks
Gross value	1,446	1,691
Equipment
Net book values of assets under capital leases and sale-leasebacks
Gross value	$ 34,305	$ 21,316