Document Type Document Type Receivable Type [Axis] Receivable Type [Axis] Other income, net Other Nonoperating Income (Expense) Other Comprehensive Income (Loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Contingencies Commitments and Contingencies Disclosure [Text Block] Related Party [Axis] Related Party [Axis] Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Ownership percentage by third party investor Asset Acquisition, Ownership Percentage by Third Party Investor Asset Acquisition, Ownership Percentage by Third Party Investor Agua Caliente Solar, LLC, Nonrecourse Credit Agreement, Federal Financing Bank, Due 2037 Agua Caliente Solar, LLC, Nonrecourse Credit Agreement, Federal Financing Bank, Due 2037 [Member] Agua Caliente Solar, LLC, Nonrecourse Credit Agreement, Federal Financing Bank, Due 2037 Segments [Axis] Business Segments [Axis] Segments [Axis] Level 3 Fair Value, Inputs, Level 3 [Member] DG-CS Master Borrower LLC, due 2040 DG-CS Master Borrower LLC, Due 2040 [Member] DG-CS Master Borrower LLC, Due 2040 Expenses from transactions with related party Related Party Transaction, Expenses from Transactions with Related Party Underlying Asset Class [Axis] Underlying Asset Class [Axis] Derivative asset Derivative asset, Net Amount Derivative Asset Refundable tax credit receivable Refundable Tax Credit Receivable Refundable Tax Credit Receivable Current portion of long-term debt — external External Current Debt External Current Debt CVSR Holdco Notes, due 2037 CVSR Holdco due 2037 [Member] CVSR Holdco due 2037 [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] LIABILITIES AND MEMBERS' EQUITY Liabilities and Equity [Abstract] Distributions to tax equity investors, non-cash Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Reduction in carrying amount of right-of-use assets Operating Lease, Right-of-Use Asset, Amortization Operating Lease, Right-of-Use Asset, Amortization Walnut Creek, due 2023 Walnut Creek Energy, LLC, due in 2023 [Member] Walnut Creek Energy, LLC, due in 2023 [Member] Conventional Generation Conventional Generation [Member] Conventional Generation [Member] Operating (Loss) Income Operating Income (Loss) Payments of debt issuance costs Payments of Debt Issuance Costs Net loss, including rounding adjustments Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Including Rounding Adjustments Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Including Rounding Adjustments Total current liabilities Liabilities, Current Wind Power Generation Wind Power Generation [Member] Wind Power Generation Other Other Debt [Member] Represents other debt instruments not separately accounted disclosed. Contract Asset and Liability Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Prepayments and other current assets Prepaid Expense and Other Assets, Current Variable Rate [Domain] Variable Rate [Domain] Transaction and integration costs Asset Acquisition, Acquisition Related Costs Asset Acquisition, Acquisition Related Costs Variable Rate [Axis] Variable Rate [Axis] Commitments and Contingencies Commitments and Contingencies ASSETS Assets [Abstract] Carlsbad Holdco, due 2038 Carlsbad Holdco, due 2038 [Member] Carlsbad Holdco, due 2038 Investment, Name [Axis] Investment, Name [Axis] Accounting Policies [Abstract] Accounting Policies [Abstract] Marsh Landing, due 2023 Marsh Landing Term Loan Facility [Member] Marsh Landing Term Loan Facility [Member] Entity Address, State or Province Entity Address, State or Province Accounts payable — trade Accounts Payable, Current Ownership interest Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest Schedule of Cash and Cash Equivalents [Table] Schedule of Cash and Cash Equivalents [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Accumulated deficit Retained Earnings (Accumulated Deficit) Restricted cash Asset Acquisition, Restricted Cash Asset Acquisition, Restricted Cash Payments for the revolving credit facility Payments for the revolving credit facility Repayments of Lines of Credit Right of use assets, net Operating Lease, Right-of-Use Asset Loss on debt extinguishment Loss on debt extinguishment Gain (Loss) on Extinguishment of Debt Nature of Business [Line Items] Basis of Presentation [Line Items] Basis of Presentation [Line Items] Total derivative instruments, Gross Amounts Recognized Assets/Liabilities Fair Value of Gross Derivative Assets/(Liabilities), Net Fair value of gross derivative assets less fair value of gross derivative liabilities. Common Class B Common Class B [Member] Energy Revenue Energy Revenue [Member] Energy Revenue [Member] 2025 Senior Notes 5.75% Senior Notes due 2025 [Member] 5.75% Senior Notes due 2025 [Member] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Proceeds from issuance of long-term debt — affiliate Proceeds from Related Party Debt Commodity contracts current Commodity Contract Current [Member] The current portion of a derivative instrument whose primary underlying risk is tied to commodity prices. Hedging Designation [Domain] Hedging Designation [Domain] Capacity Revenue Capacity Revenue [Member] Capacity Revenue [Member] Investments in unconsolidated affiliates Payments to Acquire Equity Method Investments 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. Energy Center Dover Energy Center Dover [Member] Energy Center Dover Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Accounts payable and other current liabilities Asset Acquisition, Account Payable and Other Current Liabilities Asset Acquisition, Account Payable and Other Current Liabilities Other non-current liabilities Other Liabilities, Noncurrent AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Tapestry Wind LLC, due 2031 Tapestry Wind LLC due in 2031 [Member] Tapestry Wind LLC due in 2031 [Member] Inventory Inventory, Net Total revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Asset Acquisition [Axis] Asset Acquisition [Axis] Asset Acquisition Measurement Frequency [Domain] Measurement Frequency [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Contract amortization Capitalized Contract Cost, Amortization Buckthorn Renewables, LLC Buckthorn Renewables, LLC [Member] Buckthorn Renewables, LLC [Member] Statement Statement [Line Items] Class of Stock [Domain] Class of Stock [Domain] Agua Caliente Solar LLC, due 2037 Agua Caliente Solar LLC, Due 2037 [Member] Agua Caliente Solar LLC, Due 2037 Payments for associated fees Payments for Other Fees Long Long [Member] Other currents assets Asset Acquisition, Other Assets, Current Asset Acquisition, Other Assets, Current Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Accounts receivable, net - Leases Lease Agreements [Member] Transaction and integration costs Business Combination, Acquisition Related Costs Measurement Input Type [Domain] Measurement Input Type [Domain] Statement [Table] Statement [Table] Statistical Measurement [Axis] Statistical Measurement [Axis] (Distributions) contributions from CEG, non-cash Adjustments To Additional Paid In Capital, Distributions Paid Non-Cash, Net Of Contributions Adjustments To Additional Paid In Capital, Distributions Paid Non-Cash, Net Of Contributions 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] Derivative instruments Derivative Liability, Noncurrent Number of wholly owned subsidiaries Number of Wholly Owned Subsidiaries Number of Wholly Owned Subsidiaries Weighted Average Weighted Average [Member] Line of credit facility, fair value of amount outstanding Line of Credit Facility, Fair Value of Amount Outstanding Contributed capital Members' Capital Entity Small Business Entity Small Business Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Insurance proceeds Proceeds from Insurance Settlement, Investing Activities Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Total derivative instruments, 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 Net proceeds from the issuance of Class C units Proceeds from Issuance of Common Stock Cost of operations Cost of Revenue 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. Amendment Flag Amendment Flag Current Assets Asset Acquisition, Current Assets Asset Acquisition, Current Assets Nature of Business [Table] Nature of Business [Table] Nature of Business [Table] Corporate Corporate, Non-Segment [Member] Accrued expenses and other current liabilities Other Accrued Liabilities, Current Rattlesnake TE Holdco LLC Rattlesnake TE Holdco LLC [Member] Rattlesnake TE Holdco LLC Agua Caliente Agua Caliente [Member] Agua Caliente Repayments of debt Repayments of Debt Equity Method Investments Equity Method Investments [Table Text Block] Net Cash Provided by Operating Activities Net Cash Provided by (Used in) Operating Activities Entity Central Index Key Entity Central Index Key Related Party [Domain] Related Party [Domain] Measurement Frequency [Axis] Measurement Frequency [Axis] Due to affiliate Due to Affiliate Related Party Transaction Related Party Transaction [Line Items] Derivative Instrument [Axis] Derivative Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Estimated Carrying Values and Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Generational Facilities and District Energy Systems Generational Facilities and District Energy Systems [Member] Generational Facilities and District Energy Systems Fair Value Measurement [Domain] Fair Value Measurement [Domain] Proceeds from the issuance of long-term debt — external Proceeds from Issuance of Other Long-term Debt Alta Wind I-V lease financing arrangements, due 2034 and 2035 Alta Wind I-V, lease financing arrangement, due 2034 and 2035 [Member] Alta Wind I-V, lease financing arrangement, due 2034 and 2035 [Member] 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] Utah Solar Portfolio UtahPortfolio [Member] UtahPortfolio Capital Unit, Class B Capital Unit, Class B [Member] Segments [Domain] Segments [Domain] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Asset Acquisition [Domain] Asset Acquisition [Domain] Asset Acquisition [Domain] Thermal Thermal [Member] Represents Thermal segment of the entity. Power generation capacity, megawatts (over) Power generation capacity, megawatts Power Generation Capacity, Megawatts Power Generation Capacity, Megawatts Income Statement Location [Axis] Income Statement Location [Axis] Agua Caliente acquisition Stock Issued During Period, Value, Acquisitions Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Income Statement Location [Domain] Income Statement Location [Domain] State of Hawaii State and Local Jurisdiction [Member] Cash Flows from Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Derivative, notional amount Derivative, Notional Amount El Segundo Energy Center, due 2023 El Segundo Energy Center, due 2023 [Member] El Segundo Energy Center, due 2023 [Member] Ownership interest (as a percentage) Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Long-term debt, including current portion Long-term Debt and Lease Obligation, Including Current Maturities Other non-current assets Other Assets, Noncurrent Investments Accounted for by the Equity Method and Variable Interest Entities Equity Method Investments and Joint Ventures Disclosure [Text Block] Segment Reporting Segment Reporting Disclosure [Text Block] Net proceeds from the sales of units, Clearway Energy, Inc. Stock Issued During Period, Value, New Issues 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. Alta Wind Realty Investments LLC, due 2031 Alta Wind Realty Investments LLC, Due 2031 [Member] Alta Wind Realty Investments LLC, Due 2031 Total Assets Total Assets Assets Related Party Transactions Related Party Transactions Disclosure [Text Block] Derivative instruments Derivative Liability, Current Distributions paid Limited Partners' Capital Account, Distribution Amount Intangible assets for power purchase agreements, net Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net Subsequent Event Type [Axis] Subsequent Event Type [Axis] Nature of Business Business Description and Basis of Presentation [Text Block] Accrued interest expense Interest Payable Interest expense Interest expense Interest Expense Acquisition and Dispositions Mergers, Acquisitions and Dispositions Disclosures [Text Block] Depreciation, amortization and accretion Depreciation, amortization and accretion Depreciation, Depletion and Amortization GenConn Gen Conn Energy LLC [Member] Represents the information pertaining to GenConn Energy LLC. Product and Service [Axis] Product and Service [Axis] Total Liabilities Total liabilities Liabilities Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Position [Domain] Position [Domain] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Development costs Costs Incurred, Development Costs Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Changes in prepaid and accrued liabilities for tolling agreements Changes in Prepaid and Accrued Capacity Payments Changes in Prepaid and Accrued Capacity Payments Derivative liability, Derivative Instruments Derivative Liability, Fair Value, Gross Asset Exercised optionally redeemable remaining principal amount, not validly tendered and purchased in tender offer Debt Instrument, Repurchased Face Amount, Optionally Exercised Remaining Principal, Not Validly Tendered And Purchased In Tender Offer Debt Instrument, Repurchased Face Amount, Optionally Exercised Remaining Principal, Not Validly Tendered And Purchased In Tender Offer Changes in other working capital Increase (Decrease) in Other Operating Assets and Liabilities, Net Unrealized gain on derivatives Change in unrealized losses included in earnings for derivatives and other financial instruments held as of March 31, 2021 Interest Rate Contracts (Interest Expense) Unrealized Gain (Loss) on Derivatives Distributions per Class A, B, C and D unit (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Debt Instrument [Axis] Debt Instrument [Axis] Contributions, cash Noncontrolling Interest, Increase from Sale of Parent Equity Interest Contributed Capital Additional Paid-in Capital [Member] Clearway Energy, Inc. Clearway Energy, Inc. [Member] Clearway Energy, Inc. [Member] Total other assets Other current and non-current assets Other Assets Operating Segments Operating Segments [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Class of Stock [Line Items] Class of Stock [Line Items] Other current and non-current liabilities Asset Acquisition, Liabilities, Other Current and Noncurrent Asset Acquisition, Liabilities, Other Current and Noncurrent Derivative liability Derivative liability Derivative Liability Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Rattlesnake Drop Down Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Equity investments in affiliates Equity Method Investments Derivative liability measurement input Derivative Asset (Liability) Net, Measurement Input Operating Costs and Expenses Operating Costs and Expenses [Abstract] Allocations of taxable income after (as a percentage) Income Allocation Percentage Income Allocation Percentage Subsequent Event Subsequent Event [Member] Letters of credit outstanding, amount Letters of Credit Outstanding, Amount Percentage of voting interests acquired Business Acquisition, Percentage of Voting Interests Acquired 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 Revenue Recognition Revenue [Policy Text Block] Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] 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] Fair Value Estimate of Fair Value Measurement [Member] Income Statement [Abstract] Income Statement [Abstract] Schedule of Asset Acquisition [Line Items] Schedule of Asset Acquisition [Line Items] Schedule of Asset Acquisition Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Long-term lease liabilities Operating Lease, Liability, Noncurrent Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Use of Estimates Use of Estimates, Policy [Policy Text Block] Current Assets Assets, Current [Abstract] AOCI Including Portion Attributable to Noncontrolling Interest AOCI Including Portion Attributable to Noncontrolling Interest [Member] Noncontrolling interest Asset Acquisition Of Less than 100 Percent, Noncontrolling Interest, Fair Value Asset Acquisition Of Less than 100 Percent, Noncontrolling Interest, Fair Value 2031 Senior Notes Senior Notes, 3 Point 750 Percent, Due 2031 [Member] Senior Notes, 3 Point 750 Percent, Due 2031 Fair Value Option, Disclosures Fair Value Option, Disclosures [Table Text Block] Income Tax Authority [Domain] Income Tax Authority [Domain] Consolidated Entities [Axis] Consolidated Entities [Axis] Comprehensive Loss Attributable to Clearway Energy LLC Comprehensive Income (Loss), Net of Tax, Attributable to Parent Other Financial Instruments Solar Renewable Energy Credits And Other Financial Instruments [Member] Solar Renewable Energy Credits And Other Financial Instruments Current portion of long-term debt — affiliate Affiliate Current Debt Affiliate Current Debt Capital Unit, Class [Domain] Capital Unit, Class [Domain] Legal Entity [Axis] Legal Entity [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Capital expenditures Payments to Acquire Property, Plant, and Equipment City Area Code City Area Code Consolidation Items [Domain] Consolidation Items [Domain] Income Tax Authority [Axis] Income Tax Authority [Axis] Document Period End Date Document Period End Date Long-term Debt Long-term Debt [Text Block] Rattlesnake Class B LLC Credit Facility Rattlesnake Class B LLC Credit Facility [Member] Rattlesnake Class B LLC Credit Facility Sale of assets percentage ownership interest sold Sale Of Assets Percentage Ownership Interest Sold Sale Of Assets Percentage Ownership Interest Sold Measurement Input, Commodity Forward Price Measurement Input, Commodity Forward Price [Member] 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 Equity in earnings (losses) of unconsolidated affiliates Equity in (earnings) losses of unconsolidated affiliates Income (Loss) from Equity Method Investments Other intangible assets, net Other Intangible Assets, Net Net Loss Net Loss Net Loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Reclassified from accumulated OCL to income due to realization of previously deferred amounts Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Debt Asset Acquisition, Long-term Debt Asset Acquisition, Long-term Debt Mt. Storm NedPower Mount Storm LLC [Member] NedPower Mount Storm LLC Hedging Designation [Axis] Hedging Designation [Axis] Power purchase agreement period Power Purchase Agreement Period Represents the period of power purchase agreement Renewables Renewables [Member] Renewables [Member] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Desert Sunlight Desert Sunlight [Member] Desert Sunlight Entity [Domain] Entity [Domain] Contributions from CEG Proceeds from Contributions from Affiliates Other Proceeds from (Payments for) Other Financing Activities Designated as Hedging Instrument Designated as Hedging Instrument [Member] Cover page. Cover [Abstract] Measurement Input Type [Axis] Measurement Input Type [Axis] Other revenue Products And Services, Other [Member] Products And Services, Other [Member] WCEP Holdings, LLC, due 2023 WCEP Holdings LLC, Due 2023 [Member] WCEP Holdings LLC, Due 2023 Distributions from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Mark-to-market economic hedging activities Derivative, Loss on Derivative Equity method investment removed Asset Acquisition, Equity Method Investment Removed Asset Acquisition, Equity Method Investment Removed Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Total Members' Equity Balance, beginning of period Balance, end of period Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Total liabilities assumed Asset Acquisition, Liabilities Assumed Asset Acquisition, Liabilities Assumed Affiliated Entity Affiliated Entity [Member] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Common Class C Common Class C [Member] Noncontrolling interest Members' Equity Attributable to Noncontrolling Interest Rosie Class B LLC, due 2027 Rosie Class B LLC, Due 2027 [Member] Rosie Class B LLC, Due 2027 Distributions Made to Limited Liability Company (LLC) Member, by Distribution Distributions Made to Limited Liability Company (LLC) Member, by Distribution [Table Text Block] Total operating costs and expenses Costs and Expenses Equity Components [Axis] Equity Components [Axis] Unrealized gain (loss) on derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Debt instrument, repurchased face amount Debt Instrument, Repurchased Face Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Low Minimum Minimum [Member] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Less: Loss attributable to noncontrolling interests and redeemable interests Net Income (Loss) Attributable to Noncontrolling Interest RENOM RENOM [Member] RENOM [Member] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Derivative gains and losses Derivative Instruments, Gain (Loss) [Table Text Block] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Payments for asset acquisition, net cash outflow Payments for Asset Acquisition, Net Cash Outflow Payments for Asset Acquisition, Net Cash Outflow Entity Interactive Data Current Entity Interactive Data Current Schedule of Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Operating Revenues Revenues [Abstract] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Cash Flows from Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Repurchased face amount, subject to guaranteed delivery procedures Debt Instrument, Repurchased Face Amount, Subject To Guaranteed Delivery Procedures Debt Instrument, Repurchased Face Amount, Subject To Guaranteed Delivery Procedures Commodity contracts Commodity Contract [Member] 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 Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Acquisition of Drop Down Asset Payments to Acquire Business, Two Payments to Acquire Business, Two Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Entity Registrant Name Entity Registrant Name Subsequent Event Type [Domain] Subsequent Event Type [Domain] Derivative [Table] Derivative [Table] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Oahu Solar Holdings LLC, due 2026 Oahu Solar Holdings LLC, due 2026 [Member] Oahu Solar Holdings LLC, due 2026 [Member] Intercompany Note with Clearway Energy, Inc. Intercompany Note With Clearway Energy, Inc. [Member] Intercompany Note With Clearway Energy, Inc. Cost of operations Other Cost and Expense, Operating Less net debt issuance costs Debt Issuance Costs, Net Rosie TargetCo LLC Rosie TargetCo LLC [Member] Rosie TargetCo LLC Losses expected to be realized from OCL during the next 12 months Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Energy Center Minneapolis Series D, E, F, G, H Notes, due 2025-2037 Energy Center Minneapolis Series D, E, F, G, H Notes [Member] Energy Center Minneapolis Series D, E, F, G, H Notes [Member] Consolidation Items [Axis] Consolidation Items [Axis] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Power purchase agreement period (in years) Power Purchase Remaining Agreement Period Power Purchase Remaining Agreement Period Accounts receivable — trade Accounts Receivable, after Allowance for Credit Loss, Current Noncontrolling interest, ownership percentage by parent Noncontrolling Interest, Ownership Percentage by Parent Proceeds from sale of assets Proceeds from Sales of Assets, Investing Activities Power Power [Member] Details pertaining to the power, which is considered as a derivative commodity. Lease income Operating Lease, Lease Income Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Buckthorn Solar, due 2025 Buckthorn Solar, due 2025 [Member] Buckthorn Solar, due 2025 [Member] Subtotal project-level debt: Project level debt Project Level Debt [Member] Project Level Debt [Member] Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] Beginning balance Ending balance Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Kawailoa Solar Portfolio LLC, due 2026 Kawailoa Solar Holdings LLC, due 2026 [Member] Kawailoa Solar Holdings LLC, due 2026 [Member] Carlsbad Energy Holdings LLC, due 2038 Carlsbad Energy Holdings LLC, Due 2038 [Member] Carlsbad Energy Holdings LLC, Due 2038 Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Accounts payable — affiliates Due to Affiliate, Current Document Transition Report Document Transition Report Kawailoa Partnership Kawailoa Solar Partnership LLC [Member] Kawailoa Solar Partnership LLC [Member] Derivative asset, fair value, gross asset Derivative asset Derivative Asset, Fair Value, Gross Asset Distribution per Class A, B, C and D unit, delcared (in dollars per share) Common Stock, Dividends, Per Share, Declared Restricted cash Restricted Cash and Cash Equivalents, Current Debt instrument, face amount Debt Instrument, Face Amount Elkhorn Ridge Elkhorn Ridge [Member] Elkhorn Ridge Level 2 Fair Value, Inputs, Level 2 [Member] Borrego, due 2024 and 2038 Borrego, Due 2024 and 2038 [Member] Borrego, Due 2024 and 2038 Short Short [Member] Document Quarterly Report Document Quarterly Report Underlying Asset Class [Domain] Underlying Asset Class [Domain] Net assets acquired Net assets acquired Asset Acquisition, Assets Acquired and Liabilities Assumed, Net Asset Acquisition, Assets Acquired and Liabilities Assumed, Net Power Generation Facilities by Type [Domain] Power Generation Facilities by Type [Domain] Power Generation Facilities by Type [Domain] Derivative, nonmonetary notional amount Derivative, Nonmonetary Notional Amount, Energy Measure Derivative Contract [Domain] Derivative Contract [Domain] Letter of Credit Letter of Credit [Member] CVSR, due 2037 CVSR Financing Agreement [Member] CVSR Financing Agreement [Member] 2028 Senior Notes 4.75% Senior Notes due 2028 [Member] 4.75% Senior Notes due 2028 Laredo Ridge, due 2028 Laredo Ridge Wind, LLC, due in 2028 [Member] Laredo Ridge Wind, LLC, due in 2028 [Member] Entity File Number Entity File Number Debt Disclosure [Abstract] Debt Disclosure [Abstract] Commodity contracts long-term Commodity Contract Long-Term [Member] Commodity Contract Long-Term [Member] Intangible asset for power purchase agreement, net Finite-lived Intangible Assets Acquired Borrowings Due to Affiliate, Noncurrent Energy hedge with investment-grade counterparty (in years) Energy Hedge with Investment Grade Counterparty, Period Energy Hedge with Investment Grade Counterparty, Period Amortization of financing costs and debt discounts Amortization of Debt Issuance Costs and Discounts Net contributions from noncontrolling interests Proceeds from Noncontrolling Interests Net Cash Provided by (Used in) Financing Activities Net Cash Provided by (Used in) Financing Activities Mark-to-market for economic hedges Revenue, Mark-to-market Hedging Activities Revenue, Mark-to-market Hedging Activities Balance Sheet Location [Axis] Balance Sheet Location [Axis] Counterparty Name [Axis] Counterparty Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Axis] Document Fiscal Year Focus Document Fiscal Year Focus Other Assets Assets, Noncurrent [Abstract] Rattlensake Down Rattlensake Down [Member] Rattlensake Down Less current maturities Long-term Debt, Current Maturities Entity Current Reporting Status Entity Current Reporting Status Position [Axis] Position [Axis] Receivable [Domain] Receivable [Domain] Total derivative instruments, 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 Comprehensive Loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Cash Flows from Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Long-term debt — external Long-term Debt, Excluding Current Maturities Segment Reporting [Abstract] Segment Reporting [Abstract] Derivative assets, Derivative Instruments Derivative Asset, Fair Value, Gross Liability Total accounts receivable, net Accounts Receivable, after Allowance for Credit Loss Interest Expense Interest Expense [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Acquired membership interests Stockholders' Equity Attributable to Parent Pinnacle Repowering Partnership LLC Pinnacle Repowering Partnership HoldCo LLC [Member] Pinnacle Repowering Partnership HoldCo LLC Lighthouse Renewable Holdco LLC Lighthouse Renewable Holdco LLC [Member] Lighthouse Renewable Holdco LLC Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Consideration transferred Business Combination, Consideration Transferred Valuation Technique, Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Total Liabilities and Members’ Equity Liabilities and Equity Alta TE Holdco Alta X and XI TE Holdco [Member] Alta X and XI TE Holdco [Member] Payments for long-term debt — external Repayments of Other Long-term Debt Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total non-current liabilities Liabilities, Noncurrent Entity Address, City or Town Entity Address, City or Town Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] San Juan Mesa San Juan Mesa [Member] San Juan Mesa General and administrative General and Administrative Expense Financial Instrument [Axis] Financial Instrument [Axis] Equity Component [Domain] Equity Component [Domain] Effects of NRG Yield's accumulated OCI 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] Derivative instruments Derivative Asset, Noncurrent Payments of distributions Payments of Dividends Asset acquisition, restricted cash acquired Asset Acquisition, Cash and Cash Equivalents and Restricted Cash Asset Acquisition, Cash and Cash Equivalents and Restricted Cash Alta Wind Asset Management LLC, due 2031 Alta Wind Asset Management LLC, Due 2031 [Member] Alta Wind Asset Management LLC, Due 2031 Property, plant and equipment, net Property, Plant and Equipment, Net Other Other Consolidated Variable Interest Entities [Member] Other Consolidated Variable Interest Entities Entity Tax Identification Number Entity Tax Identification Number Net notional volume buy/(sell) of NRG Yield's open derivative transactions broken out by commodity Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Interest rate contracts Interest Rate Contract [Member] Repayment of debt at asset acquisition Repayment of Debt, Acquired in Asset Acquisition Repayment of Debt, Acquired in Asset Acquisition Net Loss Attributable to Clearway Energy, LLC Net Income (Loss) Attributable to Parent Cash used in changes in other working capital Increase (Decrease) in Operating Capital [Abstract] Carlsbad Energy Holdings LLC, due 2027 Carlsbad Energy Holdings LLC, due 2027 [Member] Carlsbad Energy Holdings LLC, due 2027 LIBOR London Interbank Offered Rate (LIBOR) [Member] Investment, Name [Domain] Investment, Name [Domain] Other comprehensive income (loss) Mark-to-market of cash flow hedge accounting contracts Other Comprehensive Income (Loss), Net of Tax Add premiums Debt Instrument, Unamortized Premium Long Term Debt Current Long Term Debt Current [Member] Long Term Debt Current [Member] Changes in derivative instruments Increase (Decrease) in Derivative Assets and Liabilities Capital Unit, Class A Capital Unit, Class A [Member] Net assets less noncontrolling interests Net Assets Purpose [Axis] Purpose [Axis] Purpose [Axis] 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] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Total current assets Assets, Current Current Fiscal Year End Date Current Fiscal Year End Date Repurchased amount, percent of face value Debt Instrument, Repurchased Face Amount, Percent of Face Value Debt Instrument, Repurchased Face Amount, Percent of Face Value Pinnacle Repowering Partnership HoldCo LLC, due 2021 Pinnacle Repowering Partnership LLC, Due 2021 [Member] Pinnacle Repowering Partnership LLC, Due 2021 Property, plant and equipment, net Property, Plant and Equipment, Additions, Net Property, Plant and Equipment, Additions, Net Less: Comprehensive loss attributable to noncontrolling interests and redeemable interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest DGPV Funds DGPV Holdco 3 [Member] DGPV Holdco 3 [Member] Schedule of Asset Acquisition Schedule Of Asset Acquisition [Table Text Block] Schedule Of Asset Acquisition Operating Funds Operating Funds [Member] Operating Funds [Member] CEG CEG [Member] CEG [Member] Tax Equity Investors Tax Equity Investors [Member] Tax Equity Investors [Member] Wildorado TE Holdco Wildorado TE Holdco [Member] Wildorado TE Holdco 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. Disposal Group Name [Domain] Disposal Group Name [Domain] Members' Equity Stockholders' Equity Attributable to Parent [Abstract] Power Contracts Energy Related Derivative [Member] Document Fiscal Period Focus Document Fiscal Period Focus Clearway Energy LLC Clearway Energy LLC [Member] Clearway Energy LLC [Member] Duquesne, due 2059 Duquesne Due 2059 [Member] Duquesne Due 2059 [Member] Public Shareholders Public Shareholders [Member] Public Shareholders Cash Distribution Cash Distribution [Member] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Debt instrument, redemption price, percentage Debt Instrument, Redemption Price, Percentage Entity Filer Category Entity Filer Category Product and Service [Domain] Product and Service [Domain] Avenal Avenal [Member] Avenal Return of investment from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution, Return of Capital Accounts receivable, net - Contracts with customers Customer Contracts [Member] Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 (b) Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility [Member] Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility NIMH Solar, due 2024 NIMH Solar, due 2024 [Member] NIMH Solar, due 2024 Net contributions from noncontrolling interests Proceeds from (Payments to) Noncontrolling Interests Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Debt instrument, interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Deliverable power generation capacity, megawatts Deliverable Power Generation Capacity, Megawatts Deliverable Power Generation Capacity, Megawatts Property, Plant and Equipment Accumulated Depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Common Class A Common Class A [Member] Total 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 Related Party Transactions [Abstract] Related Party Transactions [Abstract] Net Decrease in Cash, Cash Equivalents and Restricted Cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Total other expense, net Nonoperating Income (Expense) Additional loss on extinguishment to write off deferred financing fees Gain (Loss) On Extinguishment Of Deferred Financing Fees Gain (Loss) On Extinguishment Of Deferred Financing Fees Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Debt instrument, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Other Income (Expense) Costs and Expenses [Abstract] Ownership [Axis] Ownership [Axis] Purpose [Domain] Purpose [Domain] [Domain] for Purpose [Axis] Right-of-use asset Asset Acquisition, Right-of-use asset Asset Acquisition, Right-of-use asset Ownership [Domain] Ownership [Domain] Carrying Amount Reported Value Measurement [Member] Cash and cash equivalents, held at project subsidiaries Other Cash Equivalents, at Carrying Value Economic Interest Equity Method Investment, Ownership Percentage Accumulated OCL beginning balance Accumulated OCL ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Aqua Cliente Acquisition Aqua Cliente Acquisition [Member] Aqua Cliente Acquisition Total operating revenues Operating revenues Revenues Langford TE Partnership LLC Langford TE Partnership LLC [Member] Langford TE Partnership LLC Class of Stock [Axis] Class of Stock [Axis] Proceeds from sale of interests Proceeds from Divestiture of Businesses Third Party Investor Third Party Investor [Member] Third Party Investor [Member] Percent of other financial instruments using level 3 fair value inputs Percent of Other Financial Instruments Using Level 3 Fair Value Inputs Percent of Other Financial Instruments Using Level 3 Fair Value Inputs 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 statement of cash flows Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Capital Units by Class [Axis] Capital Units by Class [Axis] Noncontrolling Interest AOCI Attributable to Noncontrolling Interest [Member] Asset Acquisition [Abstract] Asset Acquisition Local Phone Number Local Phone Number Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Schedule of long-term debt Schedule of Debt [Table Text Block] Derivative [Line Items] Derivative [Line Items] 2026 Senior Notes 5.00% Senior Notes due in 2026 [Member] 5.00% Senior Notes due in 2026 [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. Long-term debt Debt instrument, carrying amount Long-term Debt, Gross Entity Address, Address Line One Entity Address, Address Line One Common Class D Common Class D [Member] Common Class D [Member] Entity Emerging Growth Company Entity Emerging Growth Company Natural Gas Natural Gas [Member] Derivative liability, fair value, gross liability Derivative liability Derivative liability, Gross Amounts of Recognized Assets/Liabilities Derivative Liability, Fair Value, Gross Liability Prepayments and other current assets Prepaid Expenses and Other Current Assets [Member] Intangible Assets Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Schedule of Accumulated Depreciation and Amortization Schedule of Accumulated Depreciation and Amortization [Table Text Block] Schedule of Accumulated Depreciation and Amortization [Table Text Block] High Maximum Maximum [Member] Noncontrolling Interest Noncontrolling Interest [Member] Retained Earnings (Accumulated Deficit) Retained Earnings [Member] Clearway Energy Organizational Structure Organizational Structure [Table Text Block] Org Structure [Table Text Block] Measurement Basis [Axis] Measurement Basis [Axis] Noncontrolling interest Noncontrolling Interest in Variable Interest Entity 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] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Net Cash Used in Investing Activities Net Cash Provided by (Used in) Investing Activities Offsetting of derivatives by counterparty master agreement level and collateral received or paid Offsetting Liabilities [Table Text Block] Other Liabilities Liabilities, Noncurrent [Abstract] Construction loans Construction Loans [Member] Oahu Solar Partnership Oahu Solar Partnership [Member] Oahu Solar Partnership [Member] Schedule of Asset Acquisition [Table] Schedule of Asset Acquisition [Table] Schedule of Asset Acquisition Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Acquisition of Agua Caliente, net of cash acquired Payments for asset acquisition Payments for Asset Acquisition Payments for Asset Acquisition Repurchase amount, total consideration Debt Instrument, Repurchase Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Utah Solar Holdings, due 2036 Utah Solar Holdings, due 2036 [Member] Utah Solar Holdings, due 2036 Current Liabilities Liabilities, Current [Abstract] Entity Shell Company Entity Shell Company Segment Reporting Segment Reporting Information [Line Items] Fair Value, Recurring Fair Value, Recurring [Member] Interest Interest [Member] Details pertaining to interest rate swaps which are considered a derivative commodity. Recently Issued Accounting Standards Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Proceeds from the revolving credit facility Proceeds from Lines of Credit Statement of Financial Position [Abstract] Statement of Financial Position [Abstract]