Dividends per common share (in usd per share) Common Stock, Dividends, Per Share, Cash Paid 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] Washington Wind LLC Washington Wind LLC [Member] Washington Wind LLC 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] 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 Schedule of Dividends Declared Dividends Declared [Table Text Block] Recent Accounting Standards Not Yet Adopted 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] Position [Axis] Position [Axis] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] Earnings (Loss) per weighted average common share — basic (in dollars per share) Earnings (loss) per weighted average 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] Pine Forest TargetCo Pine Forest TargetCo [Member] Pine Forest TargetCo Alternative Energy Alternative Energy [Member] Net income (loss) 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 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] Unamortized debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net 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] 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] Measurement Frequency [Axis] Measurement Frequency [Axis] 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 Amortization and Depreciation 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] Fair Value, Recurring Fair Value, Recurring [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Fair value of gross derivative assets/(liabilities), net 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 loss attributable to noncontrolling interests and redeemable noncontrolling interests Less: Net (loss) income attributable to noncontrolling interests and redeemable 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] Measurement Input, Commodity Forward Price Measurement Input, Commodity Forward Price [Member] Catalina Solar Investment LLC Catalina Solar Investment LLC [Member] Catalina Solar Investment LLC 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 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] Pine Forest TE Class A Pine Forest TE Class A [Member] Pine Forest TE Class A Income (Loss) Before Income Taxes Income (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] Asset acquisition, issuance cost 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 Distribution made to limited liability (LLC) member, distributions declared, per unit (in dollars per share) Distribution Made to Limited Liability Company (LLC) Member, Distributions Declared, Per Unit 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 loss attributable to noncontrolling interests and redeemable noncontrolling interests Comprehensive loss attributable to redeemable noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Comprehensive Income 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] Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Honeycomb TE Holdco LLC Honeycomb TE Holdco LLC [Member] Honeycomb TE Holdco LLC Letter of Credit Letter of Credit [Member] Equity, Attributable to Noncontrolling Interest [Roll Forward] Equity, Attributable to Noncontrolling Interest [Roll Forward] 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 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] 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 Rosamond South Investment LLC Rosamond South Investment LLC [Member] Rosamond South Investment LLC 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] Pine Forest CE Class A Owner LLC Pine Forest CE Class A Owner LLC [Member] Pine Forest CE Class A Owner LLC 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. Percent of derivative liabilities using level 3 fair value inputs 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 Common stock, dividends, per share, 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, Net Level 2 Fair Value, Inputs, Level 2 [Member] 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 Dividends per Class C share Common Class C [Member] Common stock outstanding (in shares) Common Stock, Shares, Outstanding Derivative asset/liability measurement input Derivative Asset (Liability) Net, Measurement Input 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] Number of BESS facilities Power Purchase Agreement, Number of BESS Facilities Power Purchase Agreement, Number of BESS Facilities Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Retained Earnings Retained Earnings [Member] Prepayments and other current assets Prepaid Expense and Other Assets, Current 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 Net amount Derivative Asset Income tax (benefit) expense Income tax expense (benefit) Income tax (benefit) expense Income Tax Expense (Benefit) Basis spread on variable rate Debt instrument, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Power generation capacity, megawatts (over) Power Generation Capacity, Megawatts Power Generation Capacity, Megawatts Common Class B Distributions per Class B Unit Common Class B [Member] Total other assets Other current and non-current assets Other Assets Unrealized 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 Distributions to noncontrolling interests, net of contributions, non-cash Distributions To Noncontrolling Interests, Net of Contributions, Non-cash Distributions To Noncontrolling Interests, Net of Contributions, Non-cash 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 loss on derivatives and changes in accumulated OCI/OCL, net of income tax benefit of $—, $(2), $(5) and $(2) Unrealized gain (loss) on derivatives and changes in accumulated OCI, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Net Income (Loss) Net Income (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. City Area Code City Area Code Acquisitions and Dispositions 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] Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Schedule of Contract with Customer, Asset and Liability Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Other comprehensive income (loss) Asset Acquisition, Comprehensive Income (Loss) Asset Acquisition, Comprehensive Income (Loss) Rosie South TargetCo Rosie South TargetCo [Member] Rosie South TargetCo Cash Flows from Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and administrative expense 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 Related Party Transactions [Abstract] Related Party Transactions [Abstract] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Par value - preferred stock (in usd per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] 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. Long-term debt, proceeds Asset Acquisition, Long-term Debt, Proceeds Asset Acquisition, Long-term Debt, Proceeds Derivative Liabilities Derivative liabilities, gross Derivative Liability, Subject to Master Netting Arrangement, before Offset Percentage of ownership sold Disposal Group, Including Discontinued Operation, Percent Ownership Divested or Sold Disposal Group, Including Discontinued Operation, Percent Ownership Divested or Sold 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 Purchase price Payment For Asset Acquisitions, Adjustment Payment For Asset Acquisitions, Adjustment Accumulated (OCL) OCI attributable to noncontrolling interests AOCI Attributable to Noncontrolling Interest [Member] Accumulated (OCL) OCI ending balance, income tax expense Accumulated Other Comprehensive Income (Loss), Cumulative Change in Gain (Loss) from Cash Flow Hedges, Tax Amount Accumulated Other Comprehensive Income (Loss), Cumulative Change in Gain (Loss) from Cash Flow Hedges, Tax Amount 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 Common stock dividends and distributions to CEG unit holders Dividends, Common Stock Contributions from noncontrolling interests, net of distributions, cash Cash contributions from redeemable noncontrolling interests 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] Entity [Domain] Entity [Domain] Net Cash Used in Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Other current and non-current liabilities Asset Acquisition, Liabilities, Other Current and Noncurrent Asset Acquisition, Liabilities, Other Current and Noncurrent 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 Contributions from noncontrolling interests, net of distributions Proceeds from Noncontrolling Interests Document Fiscal Year Focus Document Fiscal Year Focus Right-of-use assets, net Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] LV-Daggett Parent Holdco LLC LV-Daggett Parent Holdco LLC [Member] LV-Daggett Parent Holdco LLC Payments for long-term debt Repayments of Long-Term Debt Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Carrying Amount Reported Value Measurement [Member] Transaction and integration costs Business Combination, Acquisition-Related Cost, Expense Pro-rata distributions to CEG, cash Noncontrolling Interest, Pro-Rata Distributions Noncontrolling Interest, Pro-Rata Distributions 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 Company borrowed an additional Proceeds from Contributions from Parent Right-of-use assets, net 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] Payments to fund project reserve accounts Payments to Fund Project Reserve Accounts Payments to Fund Project Reserve Accounts Debt Service Obligations Debt Service Obligations [Member] Debt Service Obligations [Member] Ownership [Domain] Ownership [Domain] Contributions from noncontrolling interests, net of distributions Proceeds from (Payments to) Noncontrolling Interests Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Schedule of Asset Acquisition [Line Items] Schedule of Asset Acquisition [Line Items] Schedule of Asset Acquisition 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 Distribution made to limited liability company (LLC) member, distributions paid, per unit (in dollars per share) Distribution Made to Limited Liability Company (LLC) Member, Distributions Paid, Per Unit Restricted cash Restricted cash Restricted Cash and Cash Equivalent, Current Deferred income taxes Deferred Income Tax Assets, Net Depreciation, amortization and accretion Depreciation, Depletion and Amortization Cash Equity Investor Cash Equity Investor [Member] Cash Equity Investor Other non-current assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Total operating revenues Operating revenues Revenues 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] Percent of derivative assets using level 3 fair value inputs 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] Luna Valley Class B Luna Valley Class B [Member] Luna Valley Class B 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 Loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Valuation Technique, 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 Payments for asset acquisition, excluding transaction expenses Payments For Asset Acquisition, Excluding Transaction Expenses Payments For Asset Acquisition, Excluding Transaction Expenses 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] Cash consideration Disposal Group, Including Discontinued Operation, Consideration 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 Debt Instrument [Axis] Debt Instrument [Axis] Pine Forest Drop Down Pine Forest Drop Down [Member] Pine Forest Drop Down 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 Power purchase agreement period (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 Balance at December 31, 2024 Balance at June 30, 2025 Temporary Equity, Including Noncontrolling Interest Rosie South TargetCo LLC Rosie South TargetCo LLC [Member] Rosie South TargetCo LLC Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Interest rate, 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 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 OCL 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 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] Acquisition funded by cash on hand Payments to Acquire Businesses, Gross Non-PEO NEO Non-PEO NEO [Member] Letters of credit outstanding Letters of Credit Outstanding, Amount Cash Equity Bridge Loan Cash Equity Bridge Loan [Member] Cash Equity Bridge Loan Position [Domain] Position [Domain] Other Proceeds from (Payment for) Other Financing Activity 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] Noncontrolling interest Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Buckthorn Solar Portfolio LLC Buckthorn Solar Portfolio LLC [Member] Buckthorn Solar Portfolio LLC Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Buyout of noncontrolling interest Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Discontinued Operations, Disposed of by Sale Discontinued Operations, Disposed of by Sale [Member] Compensation Amount Outstanding Recovery Compensation Amount 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] Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Accumulated other comprehensive (loss) income Accumulated Other Comprehensive Income (Loss), Net of Tax Long-term debt Long-Term Debt and Lease Obligation Financial Instruments [Domain] Financial Instruments [Domain] Clearway Renew LLC Clearway Renew LLC [Member] Clearway Renew LLC Luna Valley Drop Down Luna Valley Drop Down [Member] Luna Valley Drop Down 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. Schedule of Cash and Cash Equivalents [Table] Cash and Cash Equivalent [Table] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Inventory Inventory, Net 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 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); 202,195,425 shares issued and outstanding (Class A 34,613,853, Class B 42,738,750, Class C 83,266,680, Class D 41,576,142) at September 30, 2025 and 202,147,579 shares issued and outstanding (Class A 34,613,853, Class B 42,738,750, Class C 82,833,226, Class D 41,961,750) at December 31, 2024 Common Stock, Value, Issued Weighted average number of common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Net assets (liabilities) acquired (assumed) Net assets (liabilities) acquired (assumed) 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] WV Wind HoldCo LLC WV Wind HoldCo LLC [Member] WV Wind HoldCo LLC Power generation capacity, gigawatts (over) Power Generation Capacity, Gigawatts Power Generation Capacity, Gigawatts Derivative [Table] Derivative [Table] Daggett 1 Drop Down Daggett 1 Drop Down [Member] Daggett 1 Drop Down Additional payments for asset acquisition Payments For Asset Acquisitions, Net of Cash Acquired And Transaction Expenses Payments For Asset Acquisitions, Net of Cash Acquired And Transaction Expenses Business Combination [Axis] Business Combination [Axis] Power Generation Facilities by Type [Domain] Power Generation Facilities by Type [Domain] Power Generation Facilities by Type [Domain] Comprehensive Income (Loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Entity Small Business Entity Small Business 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 Equity Method Investment, Ownership Percentage Basic and diluted earnings 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 Dividends per Class A share 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] Power generation storage capacity, megawatts Power Generation Storage Capacity, Megawatts Power Generation Storage Capacity, Megawatts Total Stockholders’ Equity Balance at beginning of period Balance at end of period Equity, Including Portion Attributable to Noncontrolling Interest Distributions to noncontrolling interests, non-cash Non-cash distributions to 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] Earnings 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 Total revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax All Individuals All Individuals [Member] 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 Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] 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 losses included in earnings for derivatives and other financial instruments held as of September 30, 2025 Unrealized gain (loss) on derivatives, net of tax Unrealized Gain (Loss) on Derivatives Expected contributions upon substantial completion Proceeds from Noncontrolling Interests, Expected Upon Substantial Completion Proceeds from Noncontrolling Interests, Expected Upon Substantial Completion Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Intangible asset for power purchase agreement 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] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Schedule of Distributions Made to Limited Liability Company (LLC) Member, by Distribution Distributions Made to Limited Liability Company (LLC) Member, by Distribution [Table Text Block] 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 Disposal Group Name [Axis] Disposal Group Name [Axis] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Current Liabilities Liabilities, Current [Abstract] 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] Percent of financial instruments using level 3 fair value inputs 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 Decrease in note receivable — affiliate Repayment of Notes Receivable from Related Parties San Juan Mesa San Juan Mesa [Member] San Juan Mesa Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Earnings (Loss) per weighted average common share — diluted (in dollars per share) Earnings (loss) per weighted average common share — diluted (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable — trade 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 Contributions from CEG, cash Noncontrolling Interest, Decrease from Contributions to Noncontrolling Interest Holders, Cash Noncontrolling Interest, Decrease from Contributions to Noncontrolling Interest Holders, Cash Earnings Per Share Attributable to Clearway Energy, Inc. Class A and Class C Common Stockholders Earnings Per Share [Abstract] 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] 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] Non-cash adjustments for change in tax basis Adjustments to Additional Paid in Capital, Other Tuolumne Wind Acquisition Tuolumne Wind Acquisition [Member] Tuolumne Wind Acquisition Other Stockholders' Equity, Other Long Term Debt Current Long Term Debt Current [Member] Long Term Debt Current [Member] Total (losses) gains 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] Special distribution utilized to make tax payments Distribution Made to Limited Partner, Cash Distributions Paid Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] 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 Golden Puma Fund LLC Golden Puma Fund LLC [Member] Golden Puma Fund LLC 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. Measurement Frequency [Domain] Measurement Frequency [Domain] Catalina Solar Acquisition Catalina Solar Acquisition [Member] Catalina Solar Acquisition 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 Income Attributable to Clearway Energy, Inc. Net income 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 Other Liabilities Liabilities, Noncurrent [Abstract] Accrued expenses and other current liabilities Other Accrued Liabilities, Current Schedule of Reconciliation of the U.S. Federal Statutory Rate to the Company's Effective Rate 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 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 Energy-Related Commodity Contracts - Cost of Operation 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] 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, due 2028 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 Dan’s Mountain Dan’s Mountain [Member] Dan’s Mountain 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] Accumulated OCI (OCL) Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Long -term debt payable on substantial completion Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables 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] 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 Contract [Member] Derivative liabilities Asset Acquisition, Derivative Liabilities Asset Acquisition, Derivative Liabilities 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] 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 Termination Date Trading Arrangement Termination Date Net Cash Provided by (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] Measure: Measure [Axis] Receivable [Domain] Receivable [Domain] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Weighted average number of common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Disposal Group Classification [Domain] Disposal Group Classification [Domain] Schedule of Reconciliation of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] 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 Related Party Transaction [Domain] Related Party Transaction [Domain] Segment Reporting [Abstract] Segment Reporting [Abstract] 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] Valuation Technique, Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Fair value assets, measured on recurring basis, valuation techniques, impact of credit reserve to fair value 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] Other current and non-current assets Asset Acquisition, Other Noncurrent Assets Asset Acquisition, Other Noncurrent Assets Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Common Class D Distributions per Class D Unit Common Class D [Member] Common Class D [Member] Honeycomb Portfolio Drop Down Honeycomb Portfolio Drop Down [Member] Honeycomb Portfolio Drop Down 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 usd 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 Debt Instrument, Basis Spread on Fixed Rate Debt Instrument, Basis Spread on Fixed Rate Schedule of Redeemable Noncontrolling Interest 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 Mt. Storm Sale to Clearway Renew Mt. Storm Sale To Clearway Renew [Member] Mt. Storm Sale To Clearway Renew Total other liabilities Liabilities, Noncurrent Total Liabilities Total liabilities Liabilities Long-term Power Commodity Contracts Energy-Related Commodity Contracts - Operating Revenue Energy Related Derivative [Member] Pro-rata distributions to CEG Special distribution paid Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid 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 Liabilities, Current Schedule of Asset Acquisition [Table] Schedule of Asset Acquisition [Table] Schedule of Asset Acquisition Payments for asset acquisition Payments For Asset Acquisition Payments For Asset Acquisition Payments for asset acquisition, including post closing transaction expenses Payments for Asset Acquisition, Including Post Closing Transaction Expenses Payments for Asset Acquisition, Including Post Closing Transaction Expenses 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] Dan’s Mountain Drop Down Dan’s Mountain Drop Down [Member] Dan’s Mountain Drop Down Common Stock Common Stock [Member] Interest Interest [Member] Details pertaining to interest rate swaps which are considered a derivative commodity. Construction in progress Asset Acquisition, Construction in Progress Asset Acquisition, Construction in Progress 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