Leases (Maturities of Undiscounted Lease Liabilities) (Details) - USD ($) $ in Millions	Feb. 29, 2020	Mar. 01, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 36
Lessee, Operating Lease, Liability, Payments, Due Year Two	34
Lessee, Operating Lease, Liability, Payments, Due Year Three	28
Lessee, Operating Lease, Liability, Payments, Due Year Four	22
Lessee, Operating Lease, Liability, Payments, Due Year Five	17
Lessee, Operating Lease, Liability, Payments, Due after Year Five	29
Lessee, Operating Lease, Liability, Payments, Due, Total	166
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	15
Operating Lease, Liability	151	$ 189
Finance Lease, Liability, Payments, Due Next Twelve Months	1
Finance Lease, Liability, Payments, Due Year Two	0
Finance Lease, Liability, Payments, Due Year Three	0
Finance Lease, Liability, Payments, Due Year Four	0
Finance Lease, Liability, Payments, Due Year Five	0
Finance Lease, Liability, Payments, Due after Year Five	0
Finance Lease, Liability, Payment, Due, Total	1
Finance Lease, Liability, Undiscounted Excess Amount	0
Finance Lease, Liability, Total	$ 1	$ 3