Leases Schedule of Maturities of Lease Liabilities (Details) $ in Millions	Dec. 31, 2020 USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2021	$ 23
2022	16
2023	11
2024	9
2025	9
2026 and thereafter	58
Total lease payments	126
Less: Amount representing interest	(31)
Present value of lease liabilities	95
Finance Lease, Liability, Payment, Due [Abstract]
2021	2	[1]
2022	1	[1]
2023	1	[1]
2024	1	[1]
2025	1	[1]
2026 and thereafter	3	[1]
Total lease payments	9	[1]
Less: Amount representing interest	(1)	[1]
Present value of lease liabilities	$ 8	[1]

[1] (1)     Amounts exclude sale leaseback financing arrangements which are not considered leases under Topic 842.