Leases Statement - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Lessor, Operating Lease, Term of Contract	10 years
Operating Leases, Future Minimum Payments Receivable, Remainder of Fiscal Year	$ 1
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	4
Lessee, Operating Lease, Liability, Payments, Due Year Two	4
Lessee, Operating Lease, Liability, Payments, Due Year Three	4
Lessee, Operating Lease, Liability, Payments, Due Year Four	4
Lessee, Operating Lease, Liability, Payments, Due Year Five	4
Lessee, Operating Lease, Liability, Payments, Due after Year Five	22
Lessee, Operating Lease, Liability, Payments, Due	42
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(13)
Operating Lease, Right-of-Use Asset	25	$ 14
Operating Lease, Expense	7
Variable Lease, Cost	0
Sublease Income	(1)
Lease, Cost	7
Right of Use Assets Obtained in Exchange for Lease Obligation, Non Cash	30
Operating Lease, Liability	$ 29	$ 15
Operating Lease, Weighted Average Remaining Lease Term	9 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	7.90%
Operating Leases, Future Minimum Payments Receivable, in Two Years	$ 1
Operating Leases, Future Minimum Payments Receivable, in Three Years	1
Operating Leases, Future Minimum Payments Receivable, in Four Years	1
Operating Leases, Future Minimum Payments Receivable, in Five Years	1
Operating Leases, Future Minimum Payments, Due Thereafter	6
Lessor, Operating Lease, Payments to be Received	$ 12
Minimum [Member]
Lessee Operating Lease Remaining Lease Term	1 year
Maximum [Member]
Lessee Operating Lease Remaining Lease Term	11 years