Changes in Capital Structure - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions				1 Months Ended
	Aug. 04, 2026	May 01, 2026	Apr. 29, 2026	Jan. 31, 2026	Jun. 30, 2026
Common Class B
Class of Stock [Line Items]
Conversion of stock, shares deposited (in shares)					41,678,637
Common Class B | Subsequent Event
Class of Stock [Line Items]
Dividends declared (in dollars per share)	$ 0.4750
Common Class B | CEG
Class of Stock [Line Items]
Conversion of stock, shares deposited (in shares)			41,678,637
Common Class C
Class of Stock [Line Items]
Shares converted (in shares)		1	1
Common Class C | Subsequent Event
Class of Stock [Line Items]
Dividends declared (in dollars per share)	0.4750
Common Class C | Dividend Reinvestment And Direct Stock Purchase Plan
Class of Stock [Line Items]
Stock issued during period, issued for services (in shares)				1,445,244
Proceeds from issuance of stock				$ 50
Accrued professional fees				$ 1
Reserved for issuance up to an aggregate (in shares)					1,061,554
Common Class C | Clearway Energy LLC
Class of Stock [Line Items]
Shares converted (in shares)			1
Capital Unit, Class C | Dividend Reinvestment And Direct Stock Purchase Plan
Class of Stock [Line Items]
Stock issued under DSPP (in shares)				1,445,244
Common Class A | Subsequent Event
Class of Stock [Line Items]
Dividends declared (in dollars per share)	0.4750
Common Class D | Subsequent Event
Class of Stock [Line Items]
Dividends declared (in dollars per share)	$ 0.4750