Long-Term Debt - Schedule of Long Term Debt (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Dec. 31, 2023
Long-term debt
Unamortized (discounts) premiums, net	$ (258)	$ 2
Unamortized debt issuance costs	(157)	(54)
Total long-term debt	10,187	8,983
Less current maturities	(32)	(31)
Long-term debt, excluding current maturities	$ 10,155	$ 8,952
Long-term debt, weighted average interest rate	8.42%	5.55%
SOFR
Long-term debt
Basis spread on variable rate (as a percent)	6.56%
Term loan \| Term Loan B-1
Long-term debt
Long-term debt, gross	$ 1,199	$ 0
Long-term debt, weighted average interest rate	11.889%
Term loan \| Term Loan B-1 \| SOFR
Long-term debt
Basis spread on variable rate (as a percent)	6.56%
Term loan \| Term Loan B-2
Long-term debt
Long-term debt, gross	$ 1,199	0
Long-term debt, weighted average interest rate	11.889%
Term loan \| Term Loan B-2 \| SOFR
Long-term debt
Basis spread on variable rate (as a percent)	6.56%
Term loan \| Former Facility
Long-term debt
Long-term debt, gross	$ 12	$ 2,411
Long-term debt, weighted average interest rate	7.195%	7.22%
Term loan \| Former Facility \| SOFR
Long-term debt
Basis spread on variable rate (as a percent)	1.75%
Senior notes \| First Lien Notes
Long-term debt
Long-term debt, gross	$ 3,846	$ 925
Senior notes \| First Lien Notes \| Minimum
Long-term debt
Stated interest rate	10.50%
Senior notes \| First Lien Notes \| Maximum
Long-term debt
Stated interest rate	11.00%
Senior notes \| Second Lien Notes
Long-term debt
Long-term debt, gross	$ 2,229	0
Senior notes \| Second Lien Notes \| Minimum
Long-term debt
Stated interest rate	3.875%
Senior notes \| Second Lien Notes \| Maximum
Long-term debt
Stated interest rate	4.875%
Senior notes \| Former Senior Notes
Long-term debt
Long-term debt, gross	$ 0	1,500
Senior notes \| Former Senior Notes \| Minimum
Long-term debt
Stated interest rate	3.40%
Senior notes \| Former Senior Notes \| Maximum
Long-term debt
Stated interest rate	3.875%
Senior notes \| Senior Notes Maturing 2027-2029
Long-term debt
Long-term debt, gross	$ 1,865	$ 3,940
Senior notes \| Senior Notes Maturing 2027-2029 \| Minimum
Long-term debt
Stated interest rate	3.40%
Senior notes \| Senior Notes Maturing 2027-2029 \| Maximum
Long-term debt
Stated interest rate	4.625%
Senior notes \| 10.500% Senior Secured Notes Due 2030
Long-term debt
Stated interest rate		10.50%
Finance leases and other obligations
Long-term debt
Long-term debt, gross	$ 252	$ 259

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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