Leases (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Nov. 30, 2019 USD ($)	Nov. 30, 2019 USD ($)
Property, Plant and Equipment [Line Items]
Operating lease cost	$ 163,035	$ 492,020
Financing lease cost:
Amortization of right-of-use asset	1,419	4,463
Interest on long-term finance lease liabilities	775	2,536
Total finance lease costs	2,194	6,999
Short-term lease costs	445	561
Variable lease costs	42,723	126,037
Less: sublease income	(5,195)	(16,353)
Net lease cost	$ 203,202	$ 609,264
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Initial terms of noncancellable operating leases	5 years	5 years
Initial terms of noncancellable capital leases	5 years	5 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Initial terms of noncancellable operating leases	22 years	22 years
Initial terms of noncancellable capital leases	22 years	22 years
Equipment | Minimum
Property, Plant and Equipment [Line Items]
Initial terms of noncancellable operating leases	3 years	3 years
Equipment | Maximum
Property, Plant and Equipment [Line Items]
Initial terms of noncancellable operating leases	10 years	10 years