Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	May 31, 2021	Feb. 28, 2021
Leases [Abstract]
Operating lease assets	$ 453,851	$ 431,652
Finance Lease, Right-of-Use Asset	116,629	109,665
Total lease assets	570,480	541,317
Current portion of operating lease liabilities	30,836	30,953
Finance Lease, Liability, Current	9,806	9,422
Operating lease liabilities, excluding current portion	446,497	423,618
Finance Lease, Liability, Noncurrent	128,439	120,094
Total lease liabilities	615,578	584,087
Finance Lease Accumulated Depreciation	$ 20,600	$ 17,500