Leases Operating and Finance Lease Maturities Table (Details) $ in Millions	Dec. 31, 2019 USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 101
Lessee, Operating Lease, Liability, Payments, Due Year Two	80
Lessee, Operating Lease, Liability, Payments, Due Year Three	54
Lessee, Operating Lease, Liability, Payments, Due Year Four	30
Lessee, Operating Lease, Liability, Payments, Due Year Five	24
Lessee, Operating Lease, Liability, Payments, Due after Year Five	149
Lessee, Operating Lease, Liability, Payments, Due	438
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	146
Operating Lease, Liability	292
Finance Lease, Liability, Payment, Due [Abstract]
Finance Lease, Liability, Payments, Remainder of Fiscal Year	15
Finance Lease, Liability, Payments, Due Year Two	12
Finance Lease, Liability, Payments, Due Year Three	11
Finance Lease, Liability, Payments, Due Year Four	11
Finance Lease, Liability, Payments, Due Year Five	11
Finance Lease, Liability, Payments, Due after Year Five	25
Finance Lease, Liability, Payment, Due	85
Finance Lease, Liability, Undiscounted Excess Amount	21
Finance Lease, Liability	$ 64