Leases Statement (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Lessor, Operating Lease, Term of Contract	6 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	5
Lessee, Operating Lease, Liability, Payments, Due Year Three	5
Lessee, Operating Lease, Liability, Payments, Due Year Four	5
Lessee, Operating Lease, Liability, Payments, Due Year Five	5
Lessee, Operating Lease, Liability, Payments, Due after Year Five	5
Lessee, Operating Lease, Liability, Payments, Due	28
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(6)
Operating Lease, Right-of-Use Asset	19	$ 21
Operating Lease, Payments	5	5
Operating Lease, Expense	4	4
Short-Term Lease, Cost	0	0
Variable Lease, Cost	1	0
Sublease Income	(1)	(1)
Lease, Cost	4	4
Operating Lease, Liability	$ 22	$ 25
Operating Lease, Weighted Average Remaining Lease Term	6 years 1 month 6 days	6 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	7.90%	7.80%
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	1
Lessor, Operating Lease, Payments to be Received	8
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 1	$ 0
Minimum [Member]
Lessee Operating Lease Remaining Lease Term	1 year
Maximum [Member]
Lessee Operating Lease Remaining Lease Term	9 years