Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Aug. 31, 2021	Feb. 28, 2021
Leases [Abstract]
Operating lease assets	$ 553,727	$ 431,652
Finance Lease, Right-of-Use Asset	115,667	109,665
Total lease assets	669,394	541,317
Current portion of operating lease liabilities	43,676	30,953
Finance Lease, Liability, Current	9,755	9,422
Operating lease liabilities, excluding current portion	538,296	423,618
Finance Lease, Liability, Noncurrent	129,349	120,094
Total lease liabilities	721,076	584,087
Finance Lease Accumulated Depreciation	$ 23,900	$ 17,500