Leases - Supplemental B/S Information (Details) - USD ($) $ in Thousands	May 30, 2020	Feb. 29, 2020
Operating leases:
Operating lease right-of-use asset	$ 2,894,333	$ 2,903,256
Short-term operating lease liabilities	490,202	490,161
Long-term operating lease liabilities	2,694,929	2,710,347
Total operating lease liabilities	3,185,131	3,200,508
Finance leases:
Property, plant and equipment, net	1,180,346	1,215,838
Current maturities of long-term debt and lease financing obligations	8,066	8,840
Lease financing obligations, less current maturities, ASC842	18,590	19,326
Total finance lease liabilities, ASC842	$ 26,656	$ 28,166
Weighted average remaining lease term
Operating leases (in years)	7 years 8 months 12 days	7 years 9 months 18 days
Finance leases (in years)	9 years	8 years 10 months 24 days
Weighted average discount rate
Operating leases (as a percent)	6.10%	6.10%
Finance leases (as a percent)	10.40%	10.20%
Finance Leased Assets [Member]
Finance leases:
Property, plant and equipment, net	$ 18,533	$ 19,904