Leases, Schedule of Minimum Operating and Finance Lease Payments (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Year One	$ 20
Lessee, Operating Lease, Liability, Payments, Due Year Two	25
Lessee, Operating Lease, Liability, Payments, Due Year Three	22
Lessee, Operating Lease, Liability, Payments, Due Year Four	17
Lessee, Operating Lease, Liability, Payments, Due Year Five	9
Lessee, Operating Lease, Liability, Payments, Due after Year Five	29
Lessee, Operating Lease, Liability, Payments, Due	122
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	16
Operating Lease, Liability	106
Finance Lease, Liability, Payments, Year One	4
Finance Lease, Liability, Payments, Due Year Two	4
Finance Lease, Liability, Payments, Due Year Three	4
Finance Lease, Liability, Payments, Due Year Four	4
Finance Lease, Liability, Payments, Due Year Five	3
Finance Lease, Liability, Payments, Due after Year Five	8
Finance Lease, Liability, Payments, Due	27
Finance Lease, Liability, Undiscounted Excess Amount	3
Finance Lease, Liability	$ 24	$ 25