Long-term Debt - Schedule of Maturities of Debt (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Non-recourse debt
Future maturities
Unamortized financing costs	$ (3)	$ (3)
Carrying Value	120	$ 125
Term Loan Facility \| Line of Credit \| Carbon Count Term Loan Facility
Future maturities
July 1, 2026 to December 31, 2026	6
2027	222
Total minimum maturities	228
Unamortized financing costs	(2)
Carrying Value	226
Non Recourse Notes \| Non-recourse debt
Future maturities
July 1, 2026 to December 31, 2026	6
2027	6
2028	6
2029	6
2030	8
2031	7
Thereafter	84
Total minimum maturities	123
Unamortized financing costs	(3)
Carrying Value	$ 120

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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