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Schedule I - Condensed Financial Information of Registrant - Footnotes (Details) $ in Millions		12 Months Ended
	Oct. 01, 2024	Dec. 31, 2024 USD ($) state GW	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Condensed Cash Flow Statements, Captions [Line Items]
Power generation capacity, gigawatts (over)		11.8
Number of states | state		26
Cash distributions | $		$ 194	$ 180	$ 167
Clearway Energy, Inc. | Clearway Energy LLC
Condensed Cash Flow Statements, Captions [Line Items]
Ownership interest (as a percentage)		58.10%
Clearway Energy LLC | CEG
Condensed Cash Flow Statements, Captions [Line Items]
Ownership interest (as a percentage)		41.90%
Black Rock Drop Down | Global Infrastructure Management
Condensed Cash Flow Statements, Captions [Line Items]
Ownership interest (as a percentage)	100.00%
Conventional Generation, Utility-Scale Solar, Distributed Solar, and Wind
Condensed Cash Flow Statements, Captions [Line Items]
Power generation capacity, gigawatts (over)		9
Generational Facilities and District Energy Systems
Condensed Cash Flow Statements, Captions [Line Items]
Power generation capacity, gigawatts (over)		2.8

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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-Name Accounting Standards Codification
-Section S99
-Paragraph 3
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Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 810
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
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