Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Nov. 30, 2019	Feb. 28, 2019
Leases [Abstract]
Operating lease assets	$ 454,708	$ 0
Finance Lease, Right-of-Use Asset	77,304
Total lease assets	532,012
Current portion of operating lease liabilities	30,813	0
Finance Lease, Liability, Current	4,512
Operating lease liabilities, excluding current portion	446,302	$ 0
Finance Lease, Liability, Noncurrent	79,551
Total lease liabilities	561,178
Finance Lease Accumulated Depreciation	$ 7,500