Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 7
Operating Lease, Weighted Average Discount Rate, Percent	3.00%
Operating Lease, Cost	$ 10	$ 10
Operating lease assets	25	44
Leases of Lessee Disclosure [Text Block]	25	44
Operating Lease, Liability, Current	6	8
Non-current operating lease liabilities	25	41
Total lease liabilities	32	49
Operating Lease, Payments	10	9
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 4	$ 4
Operating Lease, Weighted Average Remaining Lease Term	7 years
Lessee, Operating Lease, Liability, Payments, Due Year Two	$ 6
Lessee, Operating Lease, Liability, Payments, Due Year Three	5
Lessee, Operating Lease, Liability, Payments, Due Year Four	3
Lessee, Operating Lease, Liability, Payments, Due Year Five	3
Lessee, Operating Lease, Liability, Payments, Due after Year Five	9
Lessee, Operating Lease, Liability, Payments, Due	34
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(3)
Operating Lease, Liability	$ 32
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities
Operating Lease, Expense	$ 4	$ 6
Operating Lease, Impairment Loss	$ 3