Leases - Maturities (Details) $ in Millions	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating Leases, 2020	$ 50
Operating Leases, 2021	42
Operating Leases, 2022	32
Operating Leases, 2023	24
Operating Leases, 2024	19
Operating Leases, Thereafter	46
Operating Lease, Total lease payments	213
Operating Leases, Less: interest	31
Operating Leases, Present value of lease liabilities	182
Finance Leases, 2020	5
Finance Leases, 2021	5
Finance Leases, 2022	5
Finance Leases, 2023	4
Finance Leases, 2024	2
Finance Leases, Thereafter	13
Finance Leases, Total lease payments	34
Finance Leases, Less: interest	5
Finance Leases, Present value of lease liabilities	$ 29