Debt Instruments - Schedule of Senior Secured Notes (Details) - USD ($) $ in Millions	Sep. 30, 2026	Aug. 31, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Less: unamortized debt issuance costs	$ (37)		$ (36)
Plus: unamortized premium	9		18
Senior Notes
Debt Instrument [Line Items]
Less: unamortized debt issuance costs	(14)		(29)
Plus: unamortized premium	9		18
Outstanding principal, net of debt issuance costs	2,264		3,918
Senior Notes \| Notes due June 1, 2030 (the "2030 Senior Secured Notes")
Debt Instrument [Line Items]
Total principal amount	$ 0	$ 1,660	1,660
Cash Interest Rate	9.00%
Senior Notes \| Notes due June 1, 2031 (the "2031 Senior Secured Notes")
Debt Instrument [Line Items]
Total principal amount	$ 2,269		2,269
Cash Interest Rate	9.00%
Senior Notes \| Senior Secured Notes
Debt Instrument [Line Items]
Total principal amount	$ 2,269		$ 3,929

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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