CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 30	$ 12	$ (38)	$ (92)
Other Comprehensive Income (Loss)
Unrealized gain (loss) on derivatives and changes in accumulated OCI/OCL, net of income tax (expense) benefit of $(3), $4, $(4) and $5	19	(13)	29	(18)
Other comprehensive income (loss)	19	(13)	29	(18)
Comprehensive Income (Loss)	49	(1)	(9)	(110)
Less: Comprehensive (loss) income attributable to noncontrolling interests and redeemable noncontrolling interests	(82)	(27)	18	(131)
Comprehensive Income (Loss) Attributable to Clearway Energy, Inc.	$ 131	$ 26	$ (27)	$ 21