Fair Value of Financial Instruments - Schedule of Estimated Fair Value of Financial Instruments, by Balance Sheet Grouping (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Carrying Amount
Assets:
Cash and cash equivalents	$ 346	$ 507
Investments in equity securities	115	144
Available-for-sale debt securities	177	178
Trading securities	12	13
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 6.625% Due 2025
Liabilities:
Notes payable, fair value disclosure		1,434
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 8%, Due 2026
Liabilities:
Notes payable, fair value disclosure	2,080	2,078
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 8% Due 2027
Liabilities:
Notes payable, fair value disclosure	693	692
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 5.625% due 2027
Liabilities:
Notes payable, fair value disclosure	1,826	1,819
Carrying Amount | Senior Secured Notes | Senior Notes at 6% Due 2029
Liabilities:
Notes payable, fair value disclosure	862	860
Carrying Amount | Senior Secured Notes | Senior Secured Notes 5.25%, Due 2030
Liabilities:
Notes payable, fair value disclosure	1,443
Carrying Amount | Senior Secured Notes | Senior Secured Notes at 4.750% due 2031
Liabilities:
Notes payable, fair value disclosure	1,090	1,090
Carrying Amount | Senior Notes | Senior Notes at 6.875% Due 2028
Liabilities:
Notes payable, fair value disclosure	759	759
Carrying Amount | Junior Priority Secured Notes | Junior-Priority Secured Notes at 6.875% Due 2029
Liabilities:
Notes payable, fair value disclosure	1,633	1,625
Carrying Amount | Junior Priority Secured Notes | Junior-Priority Secured Notes at 6.125% Due 2030
Liabilities:
Notes payable, fair value disclosure	1,356	1,352
Carrying Amount | ABL Facility and Other Debt
Liabilities:
Notes payable, fair value disclosure	43	32
Estimated Fair Value
Assets:
Cash and cash equivalents	346	507
Investments in equity securities	115	144
Available-for-sale debt securities	177	178
Trading securities	12	13
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 6.625% Due 2025
Liabilities:
Notes payable, fair value disclosure		1,517
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 8%, Due 2026
Liabilities:
Notes payable, fair value disclosure	1,915	2,210
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 8% Due 2027
Liabilities:
Notes payable, fair value disclosure	637	758
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 5.625% due 2027
Liabilities:
Notes payable, fair value disclosure	1,613	2,011
Estimated Fair Value | Senior Secured Notes | Senior Notes at 6% Due 2029
Liabilities:
Notes payable, fair value disclosure	744	966
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes 5.25%, Due 2030
Liabilities:
Notes payable, fair value disclosure	1,178
Estimated Fair Value | Senior Secured Notes | Senior Secured Notes at 4.750% due 2031
Liabilities:
Notes payable, fair value disclosure	806	1,108
Estimated Fair Value | Senior Notes | Senior Notes at 6.875% Due 2028
Liabilities:
Notes payable, fair value disclosure	455	758
Estimated Fair Value | Junior Priority Secured Notes | Junior-Priority Secured Notes at 6.875% Due 2029
Liabilities:
Notes payable, fair value disclosure	1,158	1,823
Estimated Fair Value | Junior Priority Secured Notes | Junior-Priority Secured Notes at 6.125% Due 2030
Liabilities:
Notes payable, fair value disclosure	903	1,431
Estimated Fair Value | ABL Facility and Other Debt
Liabilities:
Notes payable, fair value disclosure	$ 43	$ 32