Leases - Schedule of Leasing Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease asset	$ 27	$ 37
Operating Lease, Liability	30	40
Other Current Liabilities
Lessee, Lease, Description [Line Items]
Operating Lease, Liability, Current	5	9
Other Liabilities
Lessee, Lease, Description [Line Items]
Operating Lease, Liability, Noncurrent	25	31
Other Assets [Member]
Lessee, Lease, Description [Line Items]
Operating lease asset	$ 27	$ 37