Leases - Operating Lease Assets and Liabilities in the Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Leases [Abstract]
Right-of-use assets classified in Other noncurrent assets	$ 112	$ 111
Current portion of lease liabilities classified in Other current liabilities	32	32
Long-term portion of lease liabilities classified in Other noncurrent liabilities and deferred credits	83	83
Total lease liabilities	$ 115	$ 115
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities (M)(P)	Other current liabilities (M)(P)
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other noncurrent liabilities and deferred credits (M)	Other noncurrent liabilities and deferred credits (M)