Leases Schedule of Maturities of Lease Liabilities(Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020	$ 28
2021	21
2022	14
2023	11
2024	4
2025 and thereafter	66
Total lease payments	144
Less: Amount representing interest	(36)
Present value of lease liabilities	108
Finance Lease, Liability, Payment, Due [Abstract]
2020	3
2021	3
2022	0
2023	0
2024	0
2025 and thereafter	2
Total lease payments	8
Less: Amount representing interest	(1)
Present value of lease liabilities	$ 7
Operating Leases [Abstract]
2019		$ 33
2020		24
2021		20
2022		13
2023		10
2024 and thereafter		61
Total minimum payments		161
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019		15
2020		20
2021		13
2022		26
2023		9
2024 and thereafter		1
Total minimum payments		84
Less: Amount representing interest		(18)
Present value of minimum payments		$ 66