Leases - Lessee, Operating Lease, Liability, Maturity (Details) $ in Millions	Dec. 31, 2019 USD ($)
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 86
Lessee, Operating Lease, Liability, Payments, Due Year Two	95
Lessee, Operating Lease, Liability, Payments, Due Year Three	74
Lessee, Operating Lease, Liability, Payments, Due Year Four	49
Lessee, Operating Lease, Liability, Payments, Due Year Five	33
Lessee, Operating Lease, Liability, Payments, Due after Year Five	158
Lessee, Operating Lease, Liability, Payments, Due	494
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	49
Operating Lease, Liability	$ 445