Schedule I - Condensed Financial Information of Registrant - B/S Parenthetical (Details) - $ / shares	Dec. 31, 2024	Dec. 31, 2023
Condensed Financial Statements, Captions [Line Items]
Par value - preferred stock (in usd per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	0	0
Common stock, shares authorized (in shares)	3,000,000,000	3,000,000,000
Common stock, shares issued (in shares)	202,147,579	202,080,794
Common stock, shares outstanding (in shares)	202,147,579	202,080,794
Common Class A
Condensed Financial Statements, Captions [Line Items]
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	34,613,853	34,613,853
Common stock, shares outstanding (in shares)	34,613,853	34,613,853
Common Class B
Condensed Financial Statements, Captions [Line Items]
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	42,738,750	42,738,750
Common stock, shares outstanding (in shares)	42,738,750	42,738,750
Common Class C
Condensed Financial Statements, Captions [Line Items]
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	82,833,226	82,391,441
Common stock, shares outstanding (in shares)	82,833,226	82,391,441
Common Class D
Condensed Financial Statements, Captions [Line Items]
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	41,961,750	42,336,750
Common stock, shares outstanding (in shares)	41,961,750	42,336,750
Clearway Energy, Inc.
Condensed Financial Statements, Captions [Line Items]
Par value - preferred stock (in usd per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	0	0
Common stock, shares authorized (in shares)	3,000,000,000	3,000,000,000
Common stock, shares issued (in shares)	202,147,579	202,080,794
Common stock, shares outstanding (in shares)	202,147,579	202,080,794
Clearway Energy, Inc. \| Common Class A
Condensed Financial Statements, Captions [Line Items]
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	34,613,853	34,613,853
Common stock, shares outstanding (in shares)	34,613,853	34,613,853
Clearway Energy, Inc. \| Common Class B
Condensed Financial Statements, Captions [Line Items]
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	42,738,750	42,738,750
Common stock, shares outstanding (in shares)	42,738,750	42,738,750
Clearway Energy, Inc. \| Common Class C
Condensed Financial Statements, Captions [Line Items]
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	82,833,226	82,391,441
Common stock, shares outstanding (in shares)	82,833,226	82,391,441
Clearway Energy, Inc. \| Common Class D
Condensed Financial Statements, Captions [Line Items]
Par value - common stock (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	41,961,750	42,336,750
Common stock, shares outstanding (in shares)	41,961,750	42,336,750

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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