Leases (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Millions	Feb. 28, 2021	Feb. 29, 2020
Leases [Abstract]
Operating lease right-of-use assets, net	$ 63	$ 124
Operating lease liabilities	90	120
Operating Lease, Liability, Total	123	151
Finance Lease, Right-of-Use Asset (Cost)	3	5
Finance Lease, Right-Of-Use Asset (Accumulated Amortization)	3	4
Finance Lease, Right-of-Use Asset	0	1
Finance Lease, Liability, Current	0	1
Finance Lease, Liability, Noncurrent	0	0
Finance Lease, Liability, Total	0	1
Accrued Liabilities [Member]
Leases [Abstract]
Operating Lease, Liability, Current	33	31
Lessee, Lease, Description [Line Items]
Operating Lease, Liability, Current	$ 33	$ 31