Leases Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Feb. 29, 2020	Feb. 28, 2019
Leases [Abstract]
Operating lease assets	$ 449,094	$ 0
Finance lease assets	75,320
Total lease assets	524,414
Current portion of operating lease liabilities	30,980	0
Finance Lease, Liability, Current	5,066
Operating lease liabilities, excluding current portion	440,671	$ 0
Finance Lease, Liability, Noncurrent	79,327
Total lease liabilities	556,044
Finance Lease Accumulated Depreciation	$ 9,100