Income Taxes - Schedule of Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Deferred Tax Liabilities, Gross [Abstract]
Investment in projects	$ 245	$ 191
Total deferred tax liabilities	245	191
Deferred tax assets:
Interest expense disallowance carryforward - Investment in Projects	24	18
Production tax credits	12	16
Investment tax credits	6	7
Investment tax credits subject to transferability	304	0
U.S. Federal net operating loss carryforwards	44	58
State net operating loss carryforwards	7	7
Total deferred tax assets	397	106
Valuation allowance	(25)	(4)
Total deferred tax assets, net of valuation allowance	372	102
Net deferred non-current tax asset (liability)	$ 127
Net deferred non-current tax asset (liability)		$ (89)