Dividends Per Common Share (in dollars per share) Dividends per share (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Revision of Prior Period [Axis] Revision of Prior Period [Axis] Intangible Assets Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Statistical Measurement [Domain] Statistical Measurement [Domain] Schedule of Net Notional Volume Buy/(Sell) of the Company’s Open Derivative Transactions Broken Out by Commodity Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Underlying Asset Class [Axis] Underlying Asset Class [Axis] Energy-related commodity contracts Commodity Contract [Member] Fair value of short term debt Short-Term Debt, Fair Value Award Timing Predetermined Award Timing Predetermined [Flag] Related Party Transaction [Axis] Related Party Transaction [Axis] Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Other Noncurrent Assets Other Noncurrent Assets [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Equity in earnings of unconsolidated affiliates Equity in earnings of unconsolidated affiliates Equity in earnings of unconsolidated affiliates Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] Cash Asset Acquisition, Cash Asset Acquisition, Cash Recently Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Call Option Call Option [Member] Schedule of Estimated Carrying Values and Fair Values Fair Value, by Balance Sheet Grouping [Table Text Block] Number Of Reportable Segments Not Disclosed Flag Number Of Reportable Segments Not Disclosed Flag Number Of Reportable Segments Not Disclosed Flag Position [Axis] Position [Axis] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] Loss Per Weighted Average Class A and Class C Common Share - Basic (in dollars per share) Loss per weighted average common share — basic (in dollars per share) Earnings (loss) per weighted average Class A and Class C common share - basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Related Party Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Other non-current liabilities Asset Acquisition, Liabilities, Other Noncurrent Asset Acquisition, Liabilities, Other Noncurrent Net (loss) income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Including Rounding Adjustments Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Including Rounding Adjustments Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Other comprehensive income (loss) Mark-to-market of cash flow hedge accounting contracts Other Comprehensive Income (Loss), Net of Tax Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Redeemable Noncontrolling Interest Redeemable Noncontrolling Interest [Member] Redeemable Noncontrolling Interest [Member] Measurement Input Type [Domain] Measurement Input Type [Domain] Adjustment to Compensation, Amount Adjustment to Compensation Amount Affiliated Entity Affiliated Entity [Member] Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Investments in unconsolidated affiliates Payments to Acquire Equity Method Investments Capital expenditures Capital Expenditures Represents amount of total Capital expenditures including accruals pertaining to repowering of entity's projects, major maintenance and meeting environmental commitments. Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Insider Trading Policies and Procedures [Line Items] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share Restricted cash Asset Acquisition, Restricted Cash Asset Acquisition, Restricted Cash Schedule of Accumulated Depreciation and Amortization Property, Plant and Equipment [Table Text Block] Common stock, authorized (in shares) Common Stock, Shares Authorized Hedging Designation [Domain] Hedging Designation [Domain] Current Assets Assets, Current [Abstract] Total Liabilities and Stockholders’ Equity Liabilities and Equity Nature of Business [Line Items] Basis of Presentation [Line Items] Basis of Presentation [Line Items] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Gross Amounts of Recognized Assets/Liabilities Fair Value of Gross Derivative Assets/(Liabilities), Net Fair value of gross derivative assets less fair value of gross derivative liabilities. Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Energy revenue Energy Revenue [Member] Energy Revenue [Member] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Cover page. Cover [Abstract] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] High Maximum Maximum [Member] Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Less: Net income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests Net income (loss) attributable to noncontrolling interests Net loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Accounting Policies [Abstract] Accounting Policies [Abstract] Energy-related commodity contracts current Commodity Contract Current [Member] The current portion of a derivative instrument whose primary underlying risk is tied to commodity prices. Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Capacity revenue Capacity Revenue [Member] Capacity Revenue [Member] Interest rate contracts long-term Interest Rate Contract Non Current [Member] The noncurrent portion of a derivative instrument whose primary underlying risk is tied to the right to receive or pay a sum of money at a given interest rate. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Forward Market Price Measurement Input, Commodity Forward Price [Member] Drop Down AOCI Including Portion Attributable to Noncontrolling Interest, Period Increase (Decrease) Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Stock issued during period, issued for services (in shares) Stock Issued During Period, Shares, Issued for Services Changes in derivative instruments and amortization of accumulated OCI/OCL Increase (Decrease) in Derivative Assets and Liabilities Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Loss Before Income Taxes Loss before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Other non-current liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Statement of Financial Position Location, Activity, Accrual [Axis] Statement of Financial Position Location, Activity, Accrual [Axis] Borrowings Asset Acquisition, Issuance Cost Asset Acquisition, Issuance Cost Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Less current maturities Long-Term Debt, Current Maturities Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Other intangible assets, net Other Intangible Assets, Net Company Selected Measure Amount Company Selected Measure Amount Less: Comprehensive income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests Comprehensive loss attributable to redeemable noncontrolling interests Comprehensive loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Comprehensive Loss Attributable to Clearway Energy, Inc. Comprehensive income (loss) attributable to Clearway Energy, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Option Indexed to Issuer's Equity, Type [Domain] Option Indexed to Issuer's Equity, Type [Domain] Measurement Input Type [Axis] Measurement Input Type [Axis] Name Measure Name Honeycomb TE Holdco LLC Honeycomb TE Holdco LLC [Member] Honeycomb TE Holdco LLC Letter of Credit Letter of Credit [Member] Schedule of Distributions Paid Schedule of Distributions Paid [Table Text Block] Schedule of Distributions Paid [Table Text Block] Equity, Attributable to Noncontrolling Interest [Roll Forward] Equity, Attributable to Noncontrolling Interest [Roll Forward] Common Class B And Common Class D Common Class B And Common Class D [Member] Common Class B And Common Class D Deferred income taxes Deferred Income Tax Liabilities, Net Class of Stock [Line Items] Class of Stock [Line Items] Document Fiscal Period Focus Document Fiscal Period Focus Revision of Previously Issued Unaudited Financial Information Error Correction [Text Block] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Schedule of Fair Value Option, Disclosures Fair Value Option, Disclosures [Table Text Block] Award Timing Method Award Timing Method [Text Block] Summary of Significant Accounting Policies [Table] Summary of Significant Accounting Policies [Table] Summary of Significant Accounting Policies [Table] Award Type Award Type [Axis] Adjustments Revision of Prior Period, Adjustment [Member] Non-recourse debt held by unconsolidated affiliates Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total Assets Total assets Assets Number of wholly owned subsidiaries Number of Wholly Owned Subsidiaries Number of Wholly Owned Subsidiaries Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol Cash, Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Project Level Subsidiaries Project Level Subsidiaries [Member] Project Level Subsidiaries [Member] Entity Address, City or Town Entity Address, City or Town Cash Flows from Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Receivable Type [Axis] Receivable Type [Axis] Derivative Instruments Derivative Asset Fair Value Gross Liability Net Of Derivative Liability Fair Value Gross Asset Derivative Asset Fair Value Gross Liability Net Of Derivative Liability Fair Value Gross Asset Amortization of intangibles Amortization of Intangibles and Out of Market Contracts The aggregate (income) expense recorded in earnings to allocate the cost of out-of-market contracts and intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash (income) expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method. Dividend Reinvestment And Direct Stock Purchase Plan Dividend Reinvestment And Direct Stock Purchase Plan [Member] Dividend Reinvestment And Direct Stock Purchase Plan Derivative liabilities using level 3 fair value inputs (as a percentage) Percent of Derivative Liabilities Using Level 3 Fair Value Inputs Percent of Derivative Liabilities Using Level 3 Fair Value Inputs Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Property, plant and equipment Property, Plant and Equipment, Additions Nature of Business [Table] Nature of Business [Table] Nature of Business [Table] Distributions to CEG, net of contributions, cash Noncontrolling Interest, Increase (Decrease) from Sale of Parent Equity Interest Noncontrolling Interest, Increase (Decrease) from Sale of Parent Equity Interest Entity Emerging Growth Company Entity Emerging Growth Company Dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Payments for the revolving credit facility Repayments of Lines of Credit Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Less net debt issuance costs Debt issuance costs Debt Issuance Costs, Net Level 2 Fair Value, Inputs, Level 2 [Member] Payments for asset acquisition, additional purchase price Payments For Asset Acquisition, Additional Purchase Price Payments For Asset Acquisition, Additional Purchase Price Equity investments in affiliates Investment Balance Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Related Party Related Party [Member] Common Class C Common Class C [Member] Common stock outstanding (in shares) Common Stock, Shares, Outstanding Input/Range Derivative Asset (Liability) Net, Measurement Input Plan Name [Axis] Plan Name [Axis] PEO PEO [Member] Generational Facilities and District Energy Systems Generational Facilities and District Energy Systems [Member] Generational Facilities and District Energy Systems Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Fixed rate Fixed Rate [Member] Fixed Rate Acquisition of Drop Down Assets, net of cash acquired Payment to Acquire Assets, Net of Cash Acquired Payment to Acquire Assets, Net of Cash Acquired Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Retained Earnings (Accumulated Deficit) Retained Earnings [Member] Prepayments and other current assets Prepaid Expense and Other Assets, Current Effective interest rate (as a percentage) Debt Instrument, Interest Rate, Effective Percentage Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash, Cash Equivalents and Restricted Cash at Beginning of Period Cash, Cash Equivalents and Restricted Cash at End of Period Cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Assets Derivative assets, Net amount Derivative Asset Income tax benefit Income tax expense (benefit) Income tax benefit Income Tax Expense (Benefit) Basis spread on variable rate (as a percentage) Debt instrument, basis spread on variable rate (as a percentage) Debt Instrument, Basis Spread on Variable Rate Power generation capacity, megawatts Power Generation Capacity, Megawatts Power Generation Capacity, Megawatts Common Class B Common Class B [Member] Total other assets Other Assets Unrealized gain (loss) on derivatives and changes in accumulated OCI/OCL, net of income tax benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax Derivative instruments Derivative Liability, Noncurrent Preferred stock issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Derivatives Designated as Cash Flow Hedges: Designated as Hedging Instrument [Member] Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Unrealized gain (loss) on derivatives and changes in accumulated OCI/OCL, net of income tax benefit of $(1) and $(1) Unrealized gain (loss) on derivatives and changes in accumulated OCL, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Transfers out of Level 3 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3 Net Loss Net Loss Net Loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Tax Equity Bridge Loan Tax Equity Bridge Loan [Member] Tax Equity Bridge Loan Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Derivative, notional amount Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Reduction in carrying amount of right-of-use assets Operating Lease, Right-of-Use Asset, Periodic Reduction Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Changes in deferred income taxes Increase (Decrease) in Income Taxes Interest rate contracts current Interest Rate Contract Current [Member] The current portion of a derivative instrument whose primary underlying risk is tied to the right to receive or pay a sum of money at a given interest rate. Schedule of Error Corrections and Prior Period Adjustments Schedule of Error Corrections and Prior Period Adjustments [Table Text Block] City Area Code City Area Code Acquisitions Mergers, Acquisitions and Dispositions Disclosures [Text Block] Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Cash Distribution Cash Distribution [Member] Schedule of Contract Balances Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Cash Flows from Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net Cash Provided by Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Debt instrument, term (in years) Debt Instrument, Term Related Party Transactions [Abstract] Related Party Transactions [Abstract] Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Par value - preferred stock (in dollars per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Effective Income Tax Rate Reconciliation [Line Items] Effective Income Tax Rate Reconciliation [Line Items] Due to related party Other Liabilities Natural Gas Natural Gas [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Variable rate Variable Rate [Member] Variable Rate PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] GenConn Gen Conn Energy LLC [Member] Represents the information pertaining to GenConn Energy LLC. Derivative Liabilities Derivative liabilities, gross Derivative Liability, Subject to Master Netting Arrangement, before Offset Equity Components [Axis] Equity Components [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Operating Costs and Expenses Operating Costs and Expenses [Abstract] Payments of dividends and distributions Payments of Ordinary Dividends Accumulated OCI attributable to noncontrolling interests AOCI Attributable to Noncontrolling Interest [Member] Other current liabilities Asset Acquisition, Liabilities, Other Current Asset Acquisition, Liabilities, Other Current Beginning balance Ending balance Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Other Performance Measure, Amount Other Performance Measure, Amount Schedule of Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Payments of debt issuance costs Payments of Debt Issuance Costs Entity Address, State or Province Entity Address, State or Province Distributions for future delivery of equipment Distributions For Future Delivery Of Equipment Distributions For Future Delivery Of Equipment Common stock dividends and distributions to CEG unit holders Dividends, Common Stock Contributions from noncontrolling interests, net of distributions, cash Noncontrolling Interest, Increase from Sale of Parent Equity Interest Related Party [Domain] Related and Nonrelated Parties [Domain] Total current liabilities Liabilities, Current Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Clearway Energy, Inc. Clearway Energy, Inc. [Member] Clearway Energy, Inc. [Member] Other current assets Other Assets, Current Entity [Domain] Entity [Domain] Net Cash Used in Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Derivative instruments Derivative Asset, Noncurrent Proceeds from noncontrolling interests Proceeds from Noncontrolling Interests Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Right-of-use assets, net Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Payments for long-term debt Repayment of outstanding loan Repayments of Long-Term Debt Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Plan Name [Domain] Plan Name [Domain] Carrying Amount Reported Value Measurement [Member] Transaction and integration costs Business Combination, Acquisition-Related Cost, Expense Contributions received for future delivery of equipment Contributions Received For Future Delivery Of Equipment Contributions Received For Future Delivery Of Equipment Equity [Abstract] Equity [Abstract] Payments for equipment deposits and asset purchases from affiliate Payments For Equipment Deposits And Asset Purchases From Affiliate Payments For Equipment Deposits And Asset Purchases From Affiliate Total assets acquired Asset Acquisition, Assets Acquired Asset Acquisition, Assets Acquired Long-term lease liabilities Asset Acquisition, Lease Liabilities, Noncurrent Asset Acquisition, Lease Liabilities, Noncurrent Segment Reporting Segment Reporting Disclosure [Text Block] Derivatives Not Designated as Cash Flow Hedges: Not Designated as Hedging Instrument [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Current portion of long-term debt Long-Term Debt and Lease Obligation, Current Right-of-use assets Asset Acquisition, Right-Of-Use Assets, Net Asset Acquisition, Right-Of-Use Assets, Net Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Debt Service Obligations Debt Service Obligations [Member] Debt Service Obligations [Member] Ownership [Domain] Ownership [Domain] (Distributions to) Contributions from noncontrolling interests, net Proceeds from (Payments to) Noncontrolling Interests Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Weighted Average Weighted Average [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Transfers of assets under common control Transfers of Assets under Common Control Transfers of Assets under Common Control Distributions per unit (in dollars per share) Distribution Made to Limited Liability Company (LLC) Member, Distributions Paid, Per Unit Restricted cash Restricted Cash and Cash Equivalent, Current Deferred income taxes Deferred Income Tax Assets, Net Depreciation, amortization and accretion Depreciation, Depletion and Amortization Other non-current assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Total operating revenues Revenue Operating revenues Revenues Error Correction [Table] Error Correction [Table] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Derivative assets using level 3 fair value inputs (as a percentage) Percent of Derivative Assets Using Level 3 Fair Value Inputs Percent of Derivative Assets Using Level 3 Fair Value Inputs Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share Revolving Credit Facility Revolving Credit Facility [Member] Other Comprehensive Income (Loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Option Model Valuation Technique, Option Pricing Model [Member] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Other Financial Instruments Solar Renewable Energy Credits And Other Financial Instruments [Member] Solar Renewable Energy Credits And Other Financial Instruments Rosamond South I Drop Down Rosamond South I Drop Down [Member] Rosamond South I Drop Down Segments [Axis] Segments [Axis] Construction Loan Construction Loan [Member] Construction Loan Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Derivative nonmonetary notional amount (energy measure) Derivative, Nonmonetary Notional Amount, Energy Measure Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other Payment for (Proceeds from) Other Investing Activity Subsequent Event Type [Axis] Subsequent Event Type [Axis] Long Long [Member] ASSETS Assets [Abstract] Total long-term debt Long-Term Debt, Excluding Current Maturities Credit Facility [Axis] Credit Facility [Axis] Nonrelated Party Nonrelated Party [Member] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Pine Forest Drop Down Pine Forest Drop Down [Member] Pine Forest Drop Down Debt Instrument [Axis] Debt Instrument [Axis] Voting interest (as a percentage) Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Voting Interest Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Voting Interest Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Loss on debt extinguishment Loss on debt extinguishment Gain (Loss) on Extinguishment of Debt Credit Facility [Domain] Credit Facility [Domain] Stockholders’ Equity Equity, Attributable to Parent [Abstract] Derivative instruments Derivative Liability, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Long-term debt Asset Acquisition, Long-term Debt Asset Acquisition, Long-term Debt Weighted average remaining contract duration (in years) Power Purchase Agreement Period Represents the period of power purchase agreement Number of states Number of States in which Entity Operates Entity Address, Address Line One Entity Address, Address Line One Beginning balance Ending balance Temporary Equity, Including Noncontrolling Interest Rosie South TargetCo LLC Rosie South TargetCo LLC [Member] Rosie South TargetCo LLC Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] Interest rate (as a percentage) Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Long-term lease liabilities Operating Lease, Liability, Noncurrent Redeemable noncontrolling interest in subsidiaries Redeemable Noncontrolling Interest, Equity, Carrying Amount Derecognized derivative liabilities with fair value Derecognition Of Derivative Liabilities, Fair Value Derecognition Of Derivative Liabilities, Fair Value Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Desert Sunlight Desert Sunlight [Member] Desert Sunlight Ownership [Axis] Ownership [Axis] Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Assets Derivative assets, gross Derivative Asset, Subject to Master Netting Arrangement, before Offset Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Fair Value as of Grant Date Award Grant Date Fair Value Total accounts receivable, net Accounts Receivable, after Allowance for Credit Loss Other revenue Products And Services, Other [Member] Products And Services, Other [Member] Entity Registrant Name Entity Registrant Name Losses expected to be realized from OCI during the next 12 months Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Total liabilities assumed Asset Acquisition, Liabilities Assumed Asset Acquisition, Liabilities Assumed Total operating costs and expenses Costs and Expenses Related Party Transaction Related Party Transaction [Line Items] Document Quarterly Report Document Quarterly Report Revision of Prior Period [Domain] Revision of Prior Period [Domain] Fair value of long term debt Long-Term Debt, Fair Value Schedule of Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Schedule of Long-Term Debt Schedule of Debt [Table Text Block] Related Party [Axis] Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Repayments of outstanding borrowings Repayments of Long-Term Lines of Credit Restatement Determination Date: Restatement Determination Date [Axis] Non-PEO NEO Non-PEO NEO [Member] Letters of credit outstanding Letters of Credit Outstanding, Amount Position [Domain] Position [Domain] RENOM RENOM [Member] RENOM [Member] Reclassified from accumulated OCI/OCL to income due to realization of previously deferred amounts Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Name Trading Arrangement, Individual Name Underlying Asset Class [Domain] Underlying Asset Class [Domain] All Award Types Award Type [Domain] As Previously Reported Previously Reported [Member] Goat Mountain Repowering Goat Mountain Repowering [Member] Goat Mountain Repowering Noncontrolling interest Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Net assets acquired Asset Acquisition, Assets Acquired and Liabilities Assumed Net, Less Noncontrolling Interest Asset Acquisition, Assets Acquired and Liabilities Assumed Net, Less Noncontrolling Interest Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Buyout of noncontrolling interest Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Compensation Amount Outstanding Recovery Compensation Amount Total payments Debt Instrument, Face Amount Palisade Plains Partnership Palisade Plains Partnership [Member] Palisade Plains Partnership Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Expenses from transactions with related party Operating Costs and Expenses Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Fair Value Estimate of Fair Value Measurement [Member] Preferred Stock Preferred Stock [Member] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Statement of Stockholders' Equity Schedule of Capitalization, Equity [Line Items] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Asset Acquisition [Line Items] Asset Acquisition [Line Items] Operating Revenues Revenues [Abstract] Development fee Asset Acquisition, Development Fee Asset Acquisition, Development Fee Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Long-term debt Long-Term Debt and Lease Obligation Financial Instruments [Domain] Financial Instruments [Domain] Accumulated OCI attributable to Clearway Energy, Inc. AOCI Including Portion Attributable to Noncontrolling Interest [Member] Segment [Domain] Segments [Domain] Schedule of Effects of Company’s AOCI (OCL) Balance Attributable to Interest Rate Swaps Designated as Cash Flow Hedge Derivatives, Net of Tax Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Power Power [Member] Details pertaining to the power, which is considered as a derivative commodity. Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Honeycomb Portfolio BESS Honeycomb Portfolio BESS [Member] Honeycomb Portfolio BESS Inventory Inventory, Net Conversion of stock, shares deposited (in shares) Conversion of Stock, Shares Deposited Conversion of Stock, Shares Deposited Amortization of financing costs and debt discounts Amortization of Debt Issuance Costs and Discounts Low Minimum Minimum [Member] Other Assets Assets, Noncurrent [Abstract] Property, Plant and Equipment Accumulated Depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Company Selected Measure Name Company Selected Measure Name Long-term debt, including current portion Long-Term Debt and Lease Obligation, Including Current Maturities Fair Value Measurement [Domain] Fair Value Measurement [Domain] Senior Notes Senior Notes [Member] Derivative instruments, liabilities Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Intangible assets for power purchase agreements, net Intangible Assets, Power Purchase Agreements Intangible Assets, Power Purchase Agreements Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable — trade Accounts Payable, Current Cash distributions to redeemable noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Redeemable Noncontrolling Interest Holders Noncontrolling Interest, Decrease from Distributions to Redeemable Noncontrolling Interest Holders Accrued interest expense Interest Payable Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Derivative assets Asset Acquisition, Derivative Assets Asset Acquisition, Derivative Assets Elkhorn Ridge Elkhorn Ridge [Member] Elkhorn Ridge All Executive Categories All Executive Categories [Member] Class A, Class B, Class C and Class D common stock, $0.01 par value; 3,000,000,000 shares authorized (Class A 500,000,000, Class B 500,000,000, Class C 1,000,000,000, Class D 1,000,000,000); 205,218,918 shares issued and outstanding (Class A 34,613,853, Class B 42,738,750, Class C 86,290,173, Class D 41,576,142) at March 31, 2026 and 203,773,674 shares issued and outstanding (Class A 34,613,853, Class B 42,738,750, Class C 84,844,929, Class D 41,576,142) at December 31, 2025 Common Stock, Value, Issued Number of solar facilities Power Purchase Agreement, Number Of Solar Facilities Power Purchase Agreement, Number Of Solar Facilities Weighted average number of common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Other current and non-current assets Asset Acquisition, Other Current And Noncurrent Assets Asset Acquisition, Other Current And Noncurrent Assets Remaining distributed amount Asset Acquisition, Assets Acquired and Liabilities Assumed, Net Asset Acquisition, Assets Acquired and Liabilities Assumed, Net Commitments and Contingencies Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Power generation capacity, gigawatts (over) Power Generation Capacity, Gigawatts Power Generation Capacity, Gigawatts Derivative [Table] Derivative [Table] Payments for asset acquisition and transaction expenses Payments For Asset Acquisitions, Net of Cash Acquired And Transaction Expenses Payments For Asset Acquisitions, Net of Cash Acquired And Transaction Expenses Power Generation Facilities by Type [Domain] Power Generation Facilities by Type [Domain] Power Generation Facilities by Type [Domain] Business Combination [Axis] Business Combination [Axis] Comprehensive Loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Entity Small Business Entity Small Business Accrued professional fees Payments of Stock Issuance Costs Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Cost of operations, exclusive of depreciation, amortization and accretion shown separately below Other Cost and Expense, Operating Noncontrolling Interest Noncontrolling Interest [Member] Schedule of Capitalization, Equity [Table] Capitalization, Equity [Table] Long-term Debt Long-Term Debt [Text Block] Document Transition Report Document Transition Report Energy-related commodity contracts long-term Commodity Contract Long-Term [Member] Commodity Contract Long-Term [Member] Economic Interest Ownership (as a percentage) Equity Method Investment, Ownership Percentage Basic and diluted loss per share attributable to Clearway Energy, Inc. common stockholders Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Income Taxes Income Tax Disclosure [Text Block] Add premiums Debt Instrument, Unamortized Premium Flexible Generation Flexible Generation [Member] Flexible Generation Proceeds from the revolving credit facility Proceeds from Lines of Credit Common Class A Common Class A [Member] Mark-to-market for economic hedges Less: Mark-to-market for economic hedges Revenue, Mark-to-market Hedging Activities Revenue, Mark-to-market Hedging Activities Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Hedging Designation [Axis] Hedging Designation [Axis] Schedule of Fair Value Within the Derivative Instrument Valuation on the Balance Sheets Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Total Stockholders’ Equity Balance at beginning of period Balance at end of period Total Stockholders’ Equity Equity, Including Portion Attributable to Noncontrolling Interest Distributions to noncontrolling interests, non-cash Non-cash contribution from redeemable noncontrolling interests Distributions to Noncontrolling Interests, Non-cash Distributions to Noncontrolling Interests, Non-cash Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] Loss Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Additional paid-in capital Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Asset Acquisition [Domain] Asset Acquisition [Domain] Renewables & Storage Renewables And Storage [Member] Renewables And Storage Proceeds from the issuance of Class C common stock Proceeds from Issuance of Common Stock Total revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Net Amount Derivative Asset, Fair Value, Amount Offset Against Collateral Net Of Derivative Liability, Fair Value, Amount Offset Against Collateral Derivative Asset, Fair Value, Amount Offset Against Collateral Net Of Derivative Liability, Fair Value, Amount Offset Against Collateral Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Change in unrealized gains included in earnings for derivatives and other financial instruments held as of March 31, 2026 Unrealized gain (loss) on derivatives, net of tax Unrealized Gain (Loss) on Derivatives Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Intangible assets for power purchase agreements Finite-Lived Intangible Assets Acquired Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Production tax credit sales Inventory Tax Credit Sales Inventory Tax Credit Sales Proceeds from issuance of stock Proceeds from Issuance of Common Stock, Dividend Reinvestment Plan Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Current Liabilities Liabilities, Current [Abstract] Cardinal Portfolio acquisition Cardinal Portfolio (a) Cardinal Portfolio Acquisition [Member] Cardinal Portfolio Acquisition Schedule of Derivative Gains and Losses Derivative Instruments, Gain (Loss) [Table Text Block] Changes in other working capital Increase (Decrease) in Other Operating Assets and Liabilities, Net Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Financial instruments using level 3 fair value inputs (as a percentage) Percent of Other Financial Instrument Liabilities Using Level 3 Fair Value Inputs Percent of Other Financial Instrument Liabilities Using Level 3 Fair Value Inputs Term Loan Term Loan [Member] Term Loan San Juan Mesa San Juan Mesa [Member] San Juan Mesa Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Loss Per Weighted Average Class A and Class C Common Share - Diluted (in dollars per share) Loss per weighted average common share — diluted (in dollars per share) Earnings (loss) per weighted average Class A and Class C common share - diluted (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Title of 12(b) Security Title of 12(b) Security Contract amortization Less: Contract amortization Capitalized Contract Cost, Amortization Loss Per Share Attributable to Clearway Energy, Inc. Class A and Class C Common Stockholders Earnings Per Share [Abstract] Shares converted (in shares) Conversion of Stock, Shares Converted Consolidation Items [Domain] Consolidation Items [Domain] Nature of Business Business Description and Basis of Presentation [Text Block] Total other expense, net Nonoperating Income (Expense) Return of investment from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution, Return of Capital Variable Interest Entity Variable Interest Entity, Not Primary Beneficiary [Member] Schedule of Dividends Paid Schedule of Dividends Paid [Table Text Block] Tabular disclosure of all or some of the information related to dividends paid Investments Accounted for by the Equity Method and Variable Interest Entities Equity Method Investments and Joint Ventures Disclosure [Text Block] Asset Acquisition [Table] Asset Acquisition [Table] 2034 Senior Notes 2034 Senior Notes [Member] 2034 Senior Notes Quarterly Financial Information Disclosure [Abstract] Non-cash adjustments for change in tax basis Adjustments to Additional Paid in Capital, Other Other Stockholders' Equity, Other Long Term Debt Current Long Term Debt Current [Member] Long Term Debt Current [Member] Total gains (losses) for the period included in earnings Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Purpose [Axis] Purpose [Axis] Purpose Conventional Generation, Utility-Scale Solar, Distributed Solar, and Wind Conventional Generation, Utility-Scale Solar, Distributed Solar, and Wind [Member] Conventional Generation, Utility-Scale Solar, Distributed Solar, and Wind [Member] Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Operating Funds Operating Funds [Member] Operating Funds [Member] CEG CEG [Member] CEG [Member] Award Timing Disclosures [Line Items] Tax Equity Investor Tax Equity Investors [Member] Tax Equity Investors [Member] Accounts receivable, net - Leases Lease Agreements [Member] Total debt Long-Term Debt, Gross Power Generation Facilities by Type [Axis] Power Generation Facilities by Type [Axis] The types of power generation facilities included in the entity's total global generation portfolio. Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Distributions to noncontrolling interests, net of contributions, cash Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Net Loss Attributable to Clearway Energy, Inc. Net loss attributable to Clearway Energy, Inc. Net income (loss) attributable to Clearway Energy, Inc. Net Income (Loss) Attributable to Parent Clearway Energy LLC Clearway Energy LLC [Member] Clearway Energy LLC [Member] Expiration Date Trading Arrangement Expiration Date Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Other Liabilities Liabilities, Noncurrent [Abstract] Accrued expenses and other current liabilities Other Accrued Liabilities, Current Schedule of Income Tax Provision Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Public Shareholders Public Shareholders [Member] Public Shareholders Schedule of Equity Method Investments Equity Method Investments [Table Text Block] Property, plant and equipment, net Property, plant and equipment Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Adoption Date Trading Arrangement Adoption Date Goat Mountain Goat Mountain [Member] Goat Mountain Revision of Previously Issued Unaudited Financial Information Reclassification, Comparability Adjustment [Policy Text Block] Buyout of noncontrolling interest Payments of Capital Distribution Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Construction loans Construction Loans [Member] Heat Rate Call Option Commodity Contracts Commodity Option [Member] Summary of Significant Accounting Policies [Line Items] Summary of Significant Accounting Policies [Line Items] [Line Items] for Summary of Significant Accounting Policies [Table] Entity Current Reporting Status Entity Current Reporting Status Avenal Avenal [Member] Avenal Derivative [Line Items] Derivative [Line Items] Option Indexed to Issuer's Equity, Type [Axis] Option Indexed to Issuer's Equity, Type [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Operating Income Operating income (loss) Operating Income (Loss) Consolidated Entities [Domain] Consolidated Entities [Domain] Schedule of Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received or Paid Offsetting Liabilities [Table Text Block] (Accumulated deficit) Retained earnings Retained Earnings (Accumulated Deficit) Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Financial Instrument [Axis] Financial Instrument [Axis] Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility [Member] Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Payments for other fees Payments for Other Fees Repayments of debt Repayments of Debt Interest expense Interest Expense, Operating and Nonoperating Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Cash and cash equivalents, held at project subsidiaries Other Cash Equivalents, at Carrying Value Ownership interest (as a percentage) Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Proceeds from the issuance of long-term debt Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Class of Stock [Axis] Class of Stock [Axis] Noncontrolling interests Asset Acquisition Noncontrolling Interests Asset Acquisition Noncontrolling Interests Subsequent Event Type [Domain] Subsequent Event Type [Domain] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Other income, net Other income, net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Capital Unit, Class C Capital Unit, Class C [Member] Capital Unit, Class C Liabilities Derivative liabilities, net amount Derivative Liability Adjustments to reconcile net loss to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash Flows from Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Interest rate contracts Interest Rate Contracts (Interest expense) Interest Rate Contract [Member] Distributions from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Schedule of Fair Value, Assets and Liabilities Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Cardinal Portfolio acquisition Stock Issued During Period, Value, Acquisitions Tax Credit Transfer Bridge Loan Tax Credit Transfer Bridge Loan [Member] Tax Credit Transfer Bridge Loan Purpose [Domain] Purpose [Domain] Purpose Administrative Services Agreement Administrative Services Agreement [Member] Administrative Services Agreement [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Amendment Flag Amendment Flag Reserved for issuance up to an aggregate (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Termination Date Trading Arrangement Termination Date Net Cash Used in Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Mesquite Sky Restructuring Mesquite Sky Restructuring [Member] Mesquite Sky Restructuring Measure: Measure [Axis] Receivable [Domain] Receivable [Domain] Cardinal Purchaser LLC And Cardinal JV Purchaser LLC Cardinal Purchaser LLC And Cardinal JV Purchaser LLC [Member] Cardinal Purchaser LLC And Cardinal JV Purchaser LLC Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Third-Party Investor Third-Party Investor [Member] Third-Party Investor Weighted average number of common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of Reconciliation of Basic and Diluted Loss Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Statement of Financial Position Location, Activity, Accrual [Domain] Statement of Financial Position Location, Activity, Accrual [Domain] El Segundo, Marsh Landing and Walnut Creek Notes El Segundo, Marsh Landing and Walnut Creek Notes [Member] El Segundo, Marsh Landing and Walnut Creek Notes Total voting power (as a percentage) Common Stock, Percentage Of Total Voting Power Common Stock, Percentage Of Total Voting Power Related Party Transaction [Domain] Related Party Transaction [Domain] Segment Reporting [Abstract] Segment Reporting [Abstract] Cardinal Portfolio Cardinal Portfolio [Member] Cardinal Portfolio Cost of operations, exclusive of depreciation, amortization and accretion shown separately below Cost of Revenue Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Other Income (Expense) Costs and Expenses [Abstract] Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Gain recorded to total operating revenues Fair Value Assets, Measured on Recurring Basis, Valuation Techniques, Impact of Credit Reserve to Fair Value This element represents the increase (decrease) to fair value from applying a credit reserve to reflect credit risk on the valuation techniques used to measure fair value of Level 2 and 3 derivative contracts which is calculated based on credit default swaps. Asset Acquisition [Axis] Asset Acquisition [Axis] Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Common Class D Common Class D [Member] Common Class D [Member] Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Short Short [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Long-term debt, additions Asset Acquisition, Long-term Debt, Additions Asset Acquisition, Long-term Debt, Additions Common stock issued (in shares) Common Stock, Shares, Issued Basis spread on fixed rate (as a percentage) Debt Instrument, Basis Spread on Fixed Rate Debt Instrument, Basis Spread on Fixed Rate Schedule of Redeemable Noncontrolling Interests Redeemable Noncontrolling Interest [Table Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Derivative instruments Derivative Asset, Current Total Shareholder Return Amount Total Shareholder Return Amount Less: Lease revenue Total Operating Lease, Lease Income Schedule of Company Structure Organizational Structure [Table Text Block] Org Structure [Table Text Block] Derivative instruments, assets Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Insider Trading Arrangements [Line Items] Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Proceeds from transferable tax credits Proceeds From Transferable Tax Credits Proceeds From Transferable Tax Credits Remaining expected to be paid Long-Term Debt, Maturity, Remainder of Fiscal Year Total other liabilities Liabilities, Noncurrent Total Liabilities Total liabilities Liabilities Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements Long-term Power Commodity Contracts Energy-Related Commodity Contracts (Mark-to-market for economic hedging activities included in Total operating revenues) Energy Related Derivative [Member] Changes in Capital Structure Partners' Capital Notes Disclosure [Text Block] Stock issued under DSPP (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Remaining balance to distribute Asset Acquisition, Remaining Balance to Distribute Asset Acquisition, Remaining Balance to Distribute Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Accounts payable — affiliates Other current liabilities Other Liabilities, Current Payments for asset acquisition Payments For Asset Acquisition Payments For Asset Acquisition Proceeds from the issuance of Class C common stock Stock Issued During Period, Value, New Issues Statement Statement [Line Items] Consolidation Items [Axis] Consolidation Items [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Counterparty Name [Axis] Counterparty Name [Axis] Common Stock Common Stock [Member] Interest Interest [Member] Details pertaining to interest rate swaps which are considered a derivative commodity. Accounts receivable, net - Contracts with customers Customer Contracts [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net Decrease in Cash, Cash Equivalents and Restricted Cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation