Debt - Schedule of Carrying Values of Debt (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Debt instrument, face amount	$ 407	$ 374
Total debt and obligations under finance leases, principal balance	403	368
Short-term debt and current maturities of long-term debt	16	17
Total long-term debt and obligations under finance leases - principal balance	391	357
Long-term debt and obligations under finance leases	387	351
Unamortized discount (premium) and debt issuance costs, net	4	6
Revolver
Debt Instrument [Line Items]
Debt instrument, face amount	35	0
Total debt and obligations under finance leases, principal balance	35	0
7.50% Notes due 2027
Debt Instrument [Line Items]
Debt instrument, face amount	355	355
Total debt and obligations under finance leases, principal balance	351	349
Finance leases, asset financing and other
Debt Instrument [Line Items]
Debt instrument, face amount	17	19
Total debt and obligations under finance leases, principal balance	$ 17	$ 19