Leases - Lessee, Operating Lease, Liability, Maturity (Details) $ in Millions	Mar. 31, 2020 USD ($)
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 58
Lessee, Operating Lease, Liability, Payments, Due Year Two	102
Lessee, Operating Lease, Liability, Payments, Due Year Three	83
Lessee, Operating Lease, Liability, Payments, Due Year Four	55
Lessee, Operating Lease, Liability, Payments, Due Year Five	36
Lessee, Operating Lease, Liability, Payments, Due after Year Five	164
Lessee, Operating Lease, Liability, Payments, Due	499
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	50
Operating Lease, Liability	$ 448