Leases Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating Lease, Payments	$ 4	$ 4	$ 8
Finance Lease, Interest Payment on Liability	15	15	11
Finance Lease, Principal Payments	6	7	6
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	0	0	(12)
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	0	29	$ 153
Lessee, Lease, Description [Line Items]
Operating Lease, Liability, Current	3	4
Operating Lease, Liability, Noncurrent	$ 16	$ 18
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts payable
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other noncurrent liabilities