Leases - Supplemental B/S Information (Details) - USD ($) $ in Thousands	May 29, 2021	Feb. 27, 2021
Operating leases:
Operating lease right-of-use asset	$ 3,013,577	$ 3,064,077
Short-term operating lease liabilities	517,602	516,752
Long-term operating lease liabilities	2,771,797	2,829,293
Total operating lease liabilities	3,289,399	3,346,045
Finance leases:
Property, plant and equipment, net	1,074,596	1,080,499
Current maturities of long-term debt and lease financing obligations	7,261	6,409
Lease financing obligations, less current maturities	16,162	16,711
Total finance lease liabilities, ASC842	$ 23,423	$ 23,120
Weighted average remaining lease term
Operating leases (in years)	7 years 9 months 18 days	7 years 10 months 24 days
Finance leases (in years)	8 years 4 months 24 days	8 years 10 months 24 days
Weighted average discount rate
Operating leases (as a percent)	6.00%	6.00%
Finance leases (as a percent)	10.10%	9.80%
Finance Leased Assets [Member]
Finance leases:
Property, plant and equipment, net	$ 16,506	$ 16,074