Leases - Net Book Value (Details) - USD ($) $ in Thousands	Mar. 02, 2019	Mar. 03, 2018
Net book values of assets under capital leases and sale-leasebacks
Accumulated depreciation	$ (77,892)	$ (78,637)
Net value	28,015	36,058
Capital leases
Obligations under financing leases	40,176	51,446
Less current obligation	(16,112)	(20,671)
Lease financing obligations, less current maturities	24,064	30,775
Minimum payments for Lease Financing Obligations
2020	19,300
2021	4,811
2022	4,588
2023	4,383
2024	4,042
Later years	20,470
Total minimum lease payments	57,594
Amount representing interest	(17,418)
Present value of minimum lease payments	40,176
Minimum payments for Operating Leases
2020	687,412
2021	610,874
2022	545,863
2023	490,864
2024	431,714
Later years	1,541,408
Total minimum lease payments	4,308,135
Land
Net book values of assets under capital leases and sale-leasebacks
Gross value	2,688	3,458
Buildings
Net book values of assets under capital leases and sale-leasebacks
Gross value	83,624	86,012
Equipment
Net book values of assets under capital leases and sale-leasebacks
Gross value	$ 19,595	$ 25,225