Long-Term Debt and Note Payable - Affiliate - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Long-term debt
Long-term debt, gross	$ 1,738
Unamortized premiums, net	0	$ 1
Unamortized debt issuance costs	(50)	(50)
Total long-term debt	1,688	1,927
Less current maturities	0	(239)
Long-term debt, excluding current maturities	1,688	1,688
Senior notes
Long-term debt
Long-term debt, gross	$ 1,736	1,973
Senior notes | Minimum
Long-term debt
Stated interest rate	6.50%
Senior notes | Maximum
Long-term debt
Stated interest rate	7.75%
Finance lease and other
Long-term debt
Long-term debt, gross	$ 2	$ 3