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Long-Term Debt and Note Payable - Affiliate - Schedule of Long Term Debt (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Long-term debt
Unamortized premiums, net	$ 3	$ 4
Unamortized debt issuance costs	(51)	(52)
Total long-term debt	1,942	2,157
Less current maturities	(1)	(1)
Long-term debt, excluding current maturities	1,941	2,156
Senior notes
Long-term debt
Long-term debt, gross	$ 1,986	1,986
Senior notes | Minimum
Long-term debt
Stated interest rate	6.50%
Senior notes | Maximum
Long-term debt
Stated interest rate	7.75%
Term loan
Long-term debt
Long-term debt, gross	$ 0	$ 215
Weighted average interest rate		7.97%
Term loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Long-term debt
Basis spread on variable rate	2.50%
Finance lease and other obligations
Long-term debt
Long-term debt, gross	$ 4	$ 4

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