Leases - Net Book Value (Details) - USD ($) $ in Thousands	Feb. 27, 2016	Feb. 28, 2015
Net book values of assets under capital leases and sale-leasebacks
Accumulated depreciation	$ (128,168)	$ (123,581)
Net value	48,842	52,923
Capital leases
Obligations under financing leases	74,913	87,253
Sale-leaseback obligations	4,740	4,740
Less current obligation	(26,758)	(30,841)
Long-term lease finance obligations	52,895	61,152
Minimum payments for Lease Financing Obligations
2017	32,650
2018	14,277
2019	12,848
2020	8,784
2021	5,259
Later years	30,780
Total minimum lease payments	104,598
Amount representing interest	(24,945)
Present value of minimum lease payments	79,653
Minimum payments for Operating Leases
2017	1,041,231
2018	989,087
2019	906,242
2020	784,162
2021	656,268
Later years	3,393,866
Total minimum lease payments	7,770,856
Land
Net book values of assets under capital leases and sale-leasebacks
Gross value	5,063	5,063
Buildings
Net book values of assets under capital leases and sale-leasebacks
Gross value	136,416	133,177
Leasehold improvements
Net book values of assets under capital leases and sale-leasebacks
Gross value	1,612	1,330
Equipment
Net book values of assets under capital leases and sale-leasebacks
Gross value	$ 33,919	$ 36,934