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Fair Value of Financial Instruments - Schedule of Estimated Fair Value of Financial Instruments, by Balance Sheet Grouping (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Carrying Amount    
Assets:    
Cash and cash equivalents $ 39 $ 38
Investments in equity securities 64 69
Available-for-sale debt securities 178 182
Trading securities 5 5
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 8%, Due 2026    
Liabilities:    
Notes payable, fair value disclosure 0 1,109
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 8%, Due 2027    
Liabilities:    
Notes payable, fair value disclosure 695 695
Carrying Amount | Senior Secured Notes | Senior Notes at 6% Due 2029    
Liabilities:    
Notes payable, fair value disclosure 624 622
Carrying Amount | Senior Secured Notes | Senior Secured Notes 5.250%, Due 2030    
Liabilities:    
Notes payable, fair value disclosure 1,463 1,458
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 4.750% due 2031    
Liabilities:    
Notes payable, fair value disclosure 1,054 1,054
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 10.875%, Due 2032    
Liabilities:    
Notes payable, fair value disclosure 2,211 982
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 5.625% due 2027    
Liabilities:    
Notes payable, fair value disclosure 1,855 1,847
Carrying Amount | Senior Notes | Senior Notes at 6.875% Due 2028    
Liabilities:    
Notes payable, fair value disclosure 622 750
Carrying Amount | Junior-Priority Secured Notes | Junior-Priority Secured Notes at 6.875% Due 2029    
Liabilities:    
Notes payable, fair value disclosure 1,168 1,162
Carrying Amount | Junior-Priority Secured Notes | Junior-Priority Secured Notes at 6.125% Due 2030    
Liabilities:    
Notes payable, fair value disclosure 1,170 1,167
Carrying Amount | ABL Facility and Other Debt    
Liabilities:    
Notes payable, fair value disclosure 300 275
Estimated Fair Value    
Assets:    
Cash and cash equivalents 39 38
Investments in equity securities 64 69
Available-for-sale debt securities 178 182
Trading securities 5 5
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 8%, Due 2026    
Liabilities:    
Notes payable, fair value disclosure 0 1,114
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 8%, Due 2027    
Liabilities:    
Notes payable, fair value disclosure 695 679
Estimated Fair Value | Senior Secured Notes | Senior Notes at 6% Due 2029    
Liabilities:    
Notes payable, fair value disclosure 567 580
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes 5.250%, Due 2030    
Liabilities:    
Notes payable, fair value disclosure 1,269 1,287
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 4.750% due 2031    
Liabilities:    
Notes payable, fair value disclosure 829 834
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 10.875%, Due 2032    
Liabilities:    
Notes payable, fair value disclosure 2,316 1,047
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 5.625% due 2027    
Liabilities:    
Notes payable, fair value disclosure 1,769 1,767
Estimated Fair Value | Senior Notes | Senior Notes at 6.875% Due 2028    
Liabilities:    
Notes payable, fair value disclosure 458 470
Estimated Fair Value | Junior-Priority Secured Notes | Junior-Priority Secured Notes at 6.875% Due 2029    
Liabilities:    
Notes payable, fair value disclosure 954 812
Estimated Fair Value | Junior-Priority Secured Notes | Junior-Priority Secured Notes at 6.125% Due 2030    
Liabilities:    
Notes payable, fair value disclosure 858 781
Estimated Fair Value | ABL Facility and Other Debt    
Liabilities:    
Notes payable, fair value disclosure $ 300 $ 275