Leases - Lease Maturities (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating Leases
2020	$ 22
2021	18
2022	13
2023	9
2024	8
Thereafter	28
Total minimum lease payments	98
Less: amount representing interest	(12)
Total operating lease liabilities	86
Less: current portion of lease obligations	(19)
Long-term lease obligations	67
Finance Lease, Liability, Payment, Due [Abstract]
2020	1
2021	0
2022	0
2023	0
2024	0
Thereafter	0
Total minimum lease payments	1
Less: amount representing interest	0
Total finance lease liabilities	1
Less: current portion of lease obligations	(1)
Long-term lease obligations	$ 0