Position [Axis] Position [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Asset Acquisition [Axis] Asset Acquisition [Axis] Letter of Credit Letter of Credit [Member] Cash and cash equivalents, held at project subsidiaries Other Cash Equivalents, at Carrying Value Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Net Income Attributable to Clearway Energy, Inc. Net income attributable to Clearway Energy, Inc. Net Income (Loss) Attributable to Parent Consolidated Entities [Axis] Consolidated Entities [Axis] Right-of-use assets, net Operating Lease, Right-of-Use Asset 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] Income Statement Location [Axis] Income Statement Location [Axis] Interest rate contracts Interest Rate Contract [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Receivable Type [Axis] Receivable Type [Axis] Intangible Assets Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Transaction and integration costs Business Combination, Acquisition Related Costs Derivative nonmonetary notional amount (energy measure) Derivative, Nonmonetary Notional Amount, Energy Measure DG-CS Master Borrower LLC, due 2040 DG-CS Master Borrower LLC, Due 2040 [Member] DG-CS Master Borrower LLC, Due 2040 Derivative liability Derivative liability, Net Amount Derivative Liability Security Exchange Name Security Exchange Name Consideration received in asset disposition Disposal Group, Including Discontinued Operation, Consideration Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code SOFR and Applicable Margin SOFR and Applicable Margin [Member] SOFR and Applicable Margin Refundable tax credit receivable Refundable Tax Credit Receivable Refundable Tax Credit Receivable CVSR Holdco Notes, due 2037 CVSR Holdco due 2037 [Member] CVSR Holdco due 2037 [Member] Contract with Customer, Asset and Liability Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Other non-current assets Other Assets, Noncurrent Investment, Name [Axis] Investment, Name [Axis] Walnut Creek, due 2023 Walnut Creek Energy, LLC, due in 2023 [Member] Walnut Creek Energy, LLC, due in 2023 [Member] (Distributions to) contributions from noncontrolling interests Proceeds from Noncontrolling Interests Segments [Axis] Segments [Axis] Noncontrolling interest Noncontrolling Interest in Variable Interest Entity Conventional Generation Conventional Generation [Member] Conventional Generation [Member] Net Increase in Cash, Cash Equivalents and Restricted Cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Entity File Number Entity File Number 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 Lease income Operating Lease, Lease Income Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Expenses from transactions with related party Related Party Transaction, Expenses from Transactions with Related Party Other Other Debt [Member] Represents other debt instruments not separately accounted disclosed. Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements Gain on sale of asset Gain (Loss) on Disposition of Assets Transaction and integration costs Asset Acquisition, Acquisition Related Costs Asset Acquisition, Acquisition Related Costs Subsequent Event Type [Domain] Subsequent Event Type [Domain] Carlsbad Holdco, due 2038 Carlsbad Holdco, due 2038 [Member] Carlsbad Holdco, due 2038 Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Marsh Landing, due 2023 Marsh Landing Term Loan Facility [Member] Marsh Landing Term Loan Facility [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Long-term debt Long-term Debt and Lease Obligation Underlying Asset Class [Axis] Underlying Asset Class [Axis] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share Business Combination and Asset Acquisition [Abstract] Nature of Business [Line Items] Basis of Presentation [Line Items] Basis of Presentation [Line Items] SOFR Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] 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. Disposal Group Name [Axis] Disposal Group Name [Axis] Energy revenue Energy Revenue [Member] Energy Revenue [Member] Local Phone Number Local Phone Number ASSETS Assets [Abstract] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Commodity contracts current Commodity Contract Current [Member] The current portion of a derivative instrument whose primary underlying risk is tied to commodity prices. Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] 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. Preferred stock, $0.01 par value; 10,000,000 shares authorized; none issued Preferred Stock, Value, Issued Amount of restricted funds used to offset amounts under the PPAs Power Purchase Agreement, Refundable Tax Credit, Aggregate Amount Utilized Power Purchase Agreement, Refundable Tax Credit, Aggregate Amount Utilized Distributions to noncontrolling interests, net of contributions, cash Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Disposition, liabilities held for sale, percent Disposal Group, Including Discontinued Operations, Liabilities Held for Sale, Percent Disposal Group, Including Discontinued Operations, Liabilities Held for Sale, Percent (Accumulated Deficit) Retained Earnings Retained Earnings [Member] Tapestry Wind LLC, due 2031 Tapestry Wind LLC due in 2031 [Member] Tapestry Wind LLC due in 2031 [Member] Debt Instrument [Axis] Debt Instrument [Axis] Other Liabilities Liabilities, Noncurrent [Abstract] Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Earnings Per Share, Diluted Schedule of Earnings Per Share, Diluted [Table Text Block] Schedule of Earnings Per Share, Diluted Payments of dividends and distributions Payments of Ordinary Dividends Related Party [Axis] Related Party [Axis] Mesquite Sky Drop Down Mesquite Sky Drop Down [Member] Mesquite Sky Drop Down Distributions from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Buckthorn Renewables, LLC Buckthorn Renewables, LLC [Member] Buckthorn Renewables, LLC [Member] Statement of Stockholders' Equity Schedule of Capitalization, Equity [Line Items] Agua Caliente Solar LLC, due 2037 Agua Caliente Solar LLC, Due 2037 [Member] Agua Caliente Solar LLC, Due 2037 Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Other current and non-current assets Asset Acquisition, Other Assets, Current Asset Acquisition, Other Assets, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Comprehensive Income (Loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Black Rock Drop Down Black Rock Drop Down [Member] Black Rock Drop Down 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 Earnings per weighted average common share — basic (in dollars per share) Earnings Per Share, Basic Gain on sale of business Gain on sale of business Gain (Loss) on Disposition of Business Summary of Significant Accounting Policies [Table] Summary of Significant Accounting Policies [Table] Summary of Significant Accounting Policies [Table] Measurement Input, Commodity Forward Price Measurement Input, Commodity Forward Price [Member] Number of wholly owned subsidiaries Number of Wholly Owned Subsidiaries Number of Wholly Owned Subsidiaries Accounts receivable, net - Leases Lease Agreements [Member] Commodity Contracts (Mark-to-market economic hedging activities) Derivative, Loss on Derivative Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Unrealized gain on derivatives, net of tax Change in unrealized losses included in earnings for derivatives and other financial instruments held as of June 30, 2022 Interest Rate Contracts (Interest expense) Unrealized Gain (Loss) on Derivatives Common Class C Common Class C [Member] 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 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. Construction loans Construction Loans [Member] Derivative Assets Derivative assets, Gross Amount of Recognized Assets/Liabilities Derivative Asset, Fair Value, Gross Asset Nature of Business [Table] Nature of Business [Table] Nature of Business [Table] 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, 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] Rattlesnake TE Holdco LLC Rattlesnake TE Holdco LLC [Member] Rattlesnake TE Holdco LLC Agua Caliente Agua Caliente [Member] Agua Caliente Total debt Long-term Debt, Gross Current portion of long-term debt Long-term Debt and Lease Obligation, Current 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 Return of investment from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution, Return of Capital Cash Flows from Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Entity Small Business Entity Small Business Generational Facilities and District Energy Systems Generational Facilities and District Energy Systems [Member] Generational Facilities and District Energy Systems Total Liabilities and Stockholders’ Equity Liabilities and Equity Accrued expenses and other current liabilities Other Accrued Liabilities, Current Total accounts receivable, net Accounts Receivable, after Allowance for Credit Loss Unrealized gain on derivatives, net of income tax expense of, $1, $— ,$3 and $2 Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax 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] Scenario [Axis] Scenario [Axis] Additional paid-in capital Additional Paid in Capital Mililani I, due 2022 and 2024 Mililani I, Due 2022 and 2024 [Member] Mililani I, Due 2022 and 2024 LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Thermal Thermal [Member] Represents Thermal segment of the entity. Derivative [Line Items] Derivative [Line Items] Power generation capacity, megawatts (over) Power generation capacity, megawatts Power Generation Capacity, Megawatts Power Generation Capacity, Megawatts Nature of Business Business Description and Basis of Presentation [Text Block] Accumulated OCL ending balance, income tax benefit Reclassification from AOCI, Current Period, Tax Earnings Per Share Earnings Per Share [Text Block] Derivative instruments Derivative Liability, Current 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] Economic Interest Equity Method Investment, Ownership Percentage Entity Interactive Data Current Entity Interactive Data Current Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Low Minimum Minimum [Member] Commodity Contracts Energy Related Derivative [Member] El Segundo Energy Center, due 2023 El Segundo Energy Center, due 2023 [Member] El Segundo Energy Center, due 2023 [Member] Tax Equity Bridge Loan Tax Equity Bridge Loan [Member] Tax Equity Bridge Loan Changes in other working capital Increase (Decrease) in Other Operating Assets and Liabilities, Net Balance Sheet Location [Domain] Balance Sheet Location [Domain] Less: Comprehensive income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Less net debt issuance costs Debt Issuance Costs, Net 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. Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Alta Wind Realty Investments LLC, due 2031 Alta Wind Realty Investments LLC, Due 2031 [Member] Alta Wind Realty Investments LLC, Due 2031 Proceeds from sale of business Proceeds from Sale of Productive Assets Income Tax Authority [Domain] Income Tax Authority [Domain] Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Derivative instruments Derivative Asset, Current Entity Address, State or Province Entity Address, State or Province Contributions from CEG, cash Noncontrolling Interest, Increase from Sale of Parent Equity Interest Long-term debt, outstanding Asset Acquisition, Long-term Debt, Outstanding Asset Acquisition, Long-term Debt, Outstanding Deferred income taxes Deferred Income Tax Assets, Net Current Liabilities Liabilities, Current [Abstract] Receivable [Domain] Receivable [Domain] Revenue Recognition and Contract Amortization Revenue [Policy Text Block] General and administrative General and administrative expense General and Administrative Expense Level 3 Fair Value, Inputs, Level 3 [Member] GenConn Gen Conn Energy LLC [Member] Represents the information pertaining to GenConn Energy LLC. Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Accounting Policies [Abstract] Accounting Policies [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] Letters of credit outstanding, amount Letters of Credit Outstanding, Amount Redeemable noncontrolling interest in subsidiaries Redeemable Noncontrolling Interest, Equity, Carrying Amount Document Transition Report Document Transition Report 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); 202,273,531 shares issued and outstanding (Class A 34,599,645, Class B 42,738,750, Class C 82,196,386, Class D 42,738,750) at June 30, 2022 and 201,856,166 shares issued and outstanding (Class A 34,599,645, Class B 42,738,750, Class C 81,779,021, Class D 42,738,750) at December 31, 2021 Common Stock, Value, Issued Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Total other expense, net Nonoperating Income (Expense) Commitments and Contingencies Commitments and Contingencies Redeemable Noncontrolling Interest Redeemable Noncontrolling Interest [Table Text Block] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Estimated Carrying Values and Fair Values Fair Value, by Balance Sheet Grouping [Table Text Block] Entity Emerging Growth Company Entity Emerging Growth Company Beginning balance Ending balance Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Changes in prepaid and accrued liabilities for tolling agreements Changes in Prepaid and Accrued Capacity Payments Changes in Prepaid and Accrued Capacity Payments Development costs Costs Incurred, Development Costs Payments of debt issuance costs Payments of Debt Issuance Costs Short Short [Member] Unrealized loss on derivatives income tax expense (benefit) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax Clearway Energy, Inc. Clearway Energy, Inc. [Member] Clearway Energy, Inc. [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Ownership [Axis] Ownership [Axis] Legal Entity [Axis] Legal Entity [Axis] Cover page. Cover [Abstract] Total operating costs and expenses Costs and Expenses Class of Stock [Axis] Class of Stock [Axis] Other current and non-current liabilities Asset Acquisition, Liabilities, Other Current and Noncurrent Asset Acquisition, Liabilities, Other Current and Noncurrent Solar Alternative Energy [Member] Distributions to CEG, net of contributions, cash Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders, Cash Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders, Cash Income Tax Authority [Axis] Income Tax Authority [Axis] Prepayments and other current assets Prepaid Expense and Other Assets, Current 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 Other Comprehensive Income Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Financial Instrument [Axis] Financial Instrument [Axis] Common stock, dividends, per share, declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity [Domain] Entity [Domain] Total revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax 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 Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Dividends Declared Dividends Declared [Table Text Block] Payments to fund project reserve accounts Payments to Fund Project Reserve Accounts Payments to Fund Project Reserve Accounts Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Carrying Amount Reported Value Measurement [Member] Consolidation Items [Domain] Consolidation Items [Domain] Document Quarterly Report Document Quarterly Report Debt Service Obligations Debt Service Obligations [Member] Debt Service Obligations [Member] Due to affiliate Due to Affiliate Measurement Input Type [Domain] Measurement Input Type [Domain] Operating Costs and Expenses Operating Costs and Expenses [Abstract] Schedule of Asset Acquisition [Line Items] Schedule of Asset Acquisition [Line Items] Schedule of Asset Acquisition Common Stock Common Stock [Member] Variable Rate [Axis] Variable Rate [Axis] Other intangible assets, net Other Intangible Assets, Net Segment Reporting Segment Reporting Disclosure [Text Block] Drop Downs Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Operating Income Operating income Operating Income (Loss) Schedule of Earnings Per Share, Basic Schedule of Earnings Per Share, Basic [Table Text Block] Schedule of Earnings Per Share, Basic Long-term debt, including current portion Long-term Debt and Lease Obligation, Including Current Maturities Payments for associated fees Payments for Other Fees Schedule of Cash and Cash Equivalents [Table] Schedule of Cash and Cash Equivalents [Table] Hedging Designation [Axis] Hedging Designation [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Document Fiscal Year Focus Document Fiscal Year Focus Accounts receivable, net - Contracts with customers Customer Contracts [Member] Variable Rate [Domain] Variable Rate [Domain] Additional Paid-In Capital Additional Paid-in Capital [Member] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value 2031 Senior Notes Senior Notes, 3 Point 750 Percent, Due 2031 [Member] Senior Notes, 3 Point 750 Percent, Due 2031 Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share Repayments of debt Repayments of Debt Common stock, dividends, per share, cash paid (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Accrued interest expense Interest Payable Other Financial Instruments Solar Renewable Energy Credits And Other Financial Instruments [Member] Solar Renewable Energy Credits And Other Financial Instruments Proceeds from the revolving credit facility Proceeds from Lines of Credit Derivative, notional amount Derivative, Notional Amount Other income, net Other (expense) income, net Other Nonoperating Income (Expense) Other Payments for (Proceeds from) Other Investing Activities Lighthouse Renewable Holdco 2 LLC Lighthouse Renewable Holdco 2 LLC [Member] Lighthouse Renewable Holdco 2 LLC Capital expenditures Payments to Acquire Property, Plant, and Equipment Rattlesnake Dropdown Rattlesnake Dropdown [Member] Rattlesnake Dropdown Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] High Maximum Maximum [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 Total Liabilities Total liabilities Liabilities 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] 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 Cash Flows from Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Renewables Renewables [Member] Renewables [Member] Balance as of December 31, 2021 Balance as of June 30, 2022 Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests Measurement Input Type [Axis] Measurement Input Type [Axis] Consolidation Items [Axis] Consolidation Items [Axis] Common stock issued (in shares) Common Stock, Shares, Issued Preferred stock issued (in shares) Preferred Stock, Shares Issued City Area Code City Area Code Desert Sunlight Desert Sunlight [Member] Desert Sunlight Restricted cash Restricted Cash and Cash Equivalents, Current Sponsor Equity Bridge Loan Sponsor Equity Bridge Loan [Member] Sponsor Equity Bridge Loan Investments Accounted for by the Equity Method and Variable Interest Entities Equity Method Investments and Joint Ventures Disclosure [Text Block] Derivatives Designated as Cash Flow Hedges: Designated as Hedging Instrument [Member] Other revenue Products And Services, Other [Member] Products And Services, Other [Member] Entity Address, City or Town Entity Address, City or Town Loss on debt extinguishment Loss on debt extinguishment Loss on debt extinguishment Gain (Loss) on Extinguishment of Debt WCEP Holdings, LLC, due 2023 WCEP Holdings LLC, Due 2023 [Member] WCEP Holdings LLC, Due 2023 Viento Funding II, LLC Due 2023 and 2029 Viento Funding II, LLC Due 2023 and 2029 [Member] Viento Funding II, LLC Due 2023 and 2029 Stockholders’ Equity Stockholders' Equity Attributable to Parent [Abstract] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Total liabilities assumed Asset Acquisition, Liabilities Assumed Asset Acquisition, Liabilities Assumed Balance Sheet Location [Axis] Balance Sheet Location [Axis] Long-term lease liabilities Operating Lease, Liability, Noncurrent Derivative instruments Derivative Asset, Noncurrent Measurement Frequency [Domain] Measurement Frequency [Domain] Debt instrument, face amount Debt Instrument, Face Amount Other Assets Assets, Noncurrent [Abstract] Interest expense Interest expense Interest Expense Rosie Class B LLC, due 2027 Rosie Class B LLC, Due 2027 [Member] Rosie Class B LLC, Due 2027 Effective interest rate, percent Debt Instrument, Interest Rate, Effective Percentage Percentage of assets ownership sold Sale of Assets Percentage Ownership Sold Sale of Assets Percentage Ownership Sold Contract amortization Less: Contract amortization Capitalized Contract Cost, Amortization 2032 Senior Notes Senior Notes, 3 Point 750 Percent, Due 2032 [Member] Senior Notes, 3 Point 750 Percent, Due 2032 Retained earnings (accumulated deficit) Retained Earnings (Accumulated Deficit) Operating Segments Operating Segments [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Schedule of Maximum Loss Exposure in Equity Method Investments Equity Method Investments [Table Text Block] Entity Filer Category Entity Filer Category Line of credit facility, fair value of amount outstanding Line of Credit Facility, Fair Value of Amount Outstanding Derivative gains and losses Derivative Instruments, Gain (Loss) [Table Text Block] Valuation Technique, Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Schedule of Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Equity investments in affiliates Investment Balance Equity Method Investments Income Statement [Abstract] Income Statement [Abstract] RENOM RENOM [Member] RENOM [Member] Fair Value Estimate of Fair Value Measurement [Member] Entity Registrant Name Entity Registrant Name Payments for the revolving credit facility Payments for the revolving credit facility Repayments of Lines of Credit 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 Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Acquisition of Drop Down Assets Payments to Acquire Business, Two Payments to Acquire Business, Two Total Stockholders’ Equity Balance at beginning of period Balance at end of period Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Accounts receivable — trade Accounts Receivable, after Allowance for Credit Loss, Current Amendment Flag Amendment Flag Proceeds from the issuance of long-term debt Proceeds from Issuance of Long-term Debt Equity Components [Axis] Equity Components [Axis] Entity Tax Identification Number Entity Tax Identification Number Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Oahu Solar Holdings LLC, due 2026 Oahu Solar Holdings LLC, due 2026 [Member] Oahu Solar Holdings LLC, due 2026 [Member] Total current assets Assets, Current (Distributions to) contributions from noncontrolling interests Proceeds from (Payments to) Noncontrolling Interests Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Inventory Inventory, Net Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Net assets less noncontrolling interests Net Assets Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] 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] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Rosie TargetCo LLC Rosie TargetCo LLC [Member] Rosie TargetCo LLC Agua Caliente acquisition Noncontrolling Interest, Increase from Business Combination Less current maturities Long-term Debt, Current Maturities Changes in deferred income taxes Increase (Decrease) in Income Taxes Losses expected to be realized from OCL during the next 12 months, tax expense (benefit) Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months, Tax The estimated tax impact of existing gains or losses on cash flow hedges, at the reporting date, which are expected to be reclassified to earnings within the next 12 months. Product and Service [Axis] Product and Service [Axis] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Par value - preferred stock (in usd per share) Preferred Stock, Par or Stated Value Per Share Equity Component [Domain] Equity Component [Domain] Power Power [Member] Details pertaining to the power, which is considered as a derivative commodity. Discontinued Operations, Disposed of by Sale Discontinued Operations, Disposed of by Sale [Member] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Disposal Group Name [Domain] Disposal Group Name [Domain] Buckthorn Solar, due 2025 Buckthorn Solar, due 2025 [Member] Buckthorn Solar, due 2025 [Member] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Subtotal project-level debt: Project Level Debt [Member] Project Level Debt [Member] Statement Statement [Line Items] Total Energies Total Energies [Member] Total Energies Kawailoa Solar Portfolio LLC, due 2026 Kawailoa Solar Holdings LLC, due 2026 [Member] Kawailoa Solar Holdings LLC, due 2026 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Carlsbad Energy Holdings LLC, due 2038 Carlsbad Energy Holdings LLC, Due 2038 [Member] Carlsbad Energy Holdings LLC, Due 2038 Kawailoa Partnership Kawailoa Solar Partnership LLC [Member] Kawailoa Solar Partnership LLC [Member] 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] Cash distributions to redeemable noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Redeemable Noncontrolling Interest Holders Noncontrolling Interest, Decrease from Distributions to Redeemable Noncontrolling Interest Holders Counterparty Name [Domain] Counterparty Name [Domain] Elkhorn Ridge Elkhorn Ridge [Member] Elkhorn Ridge Borrego, due 2024 and 2038 Borrego, Due 2024 and 2038 [Member] Borrego, Due 2024 and 2038 Debt Disclosure [Abstract] Debt Disclosure [Abstract] Weighted Average Weighted Average [Member] Accounts payable — affiliates Due to Affiliate, Current Accounts receivable — affiliates Due from Affiliate, Current Income (Loss) Before Income Taxes Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Level 2 Fair Value, Inputs, Level 2 [Member] Asset purchase from affiliate Payments to Acquire Assets from Affiliate Payments to Acquire Assets from Affiliate Net liabilities assumed, net Net liabilities assumed Asset Acquisition, Assets Acquired and Liabilities Assumed, Net Asset Acquisition, Assets Acquired and Liabilities Assumed, Net Waiawa Drop Down Waiawa Drop Down [Member] Waiawa Drop Down Current liabilities held-for-sale Disposal Group, Including Discontinued Operation, Liabilities, Current Corporate Corporate, Non-Segment [Member] Segment Reporting [Abstract] Segment Reporting [Abstract] Comprehensive income attributable to redeemable noncontrolling interests Comprehensive Income, Net of Tax Portions Attributable to Noncontrolling Redeemable Interest Comprehensive Income, Net of Tax Portions Attributable to Noncontrolling Redeemable Interest Commodity contracts Commodity Contract [Member] Power Generation Facilities by Type [Domain] Power Generation Facilities by Type [Domain] Power Generation Facilities by Type [Domain] Use of Estimates Use of Estimates, Policy [Policy Text Block] 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 Forecast Forecast [Member] Schedule of Capitalization, Equity [Table] Schedule of Capitalization, Equity [Table] Laredo Ridge, due 2028 Laredo Ridge Wind, LLC, due in 2028 [Member] Laredo Ridge Wind, LLC, due in 2028 [Member] Losses expected to be realized from OCI during the next 12 months, net of income tax benefit of $— Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Title of 12(b) Security Title of 12(b) Security Commodity contracts long-term Commodity Contract Long-Term [Member] Commodity Contract Long-Term [Member] Fair Value Option, Disclosures Fair Value Option, Disclosures [Table Text Block] Total Assets Total Assets Assets Investment, Name [Domain] Investment, Name [Domain] Common stock, authorized (in shares) Common Stock, Shares Authorized Document Type Document Type Product and Service [Domain] Product and Service [Domain] Noncontrolling Interest Noncontrolling Interest [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 Debt instrument, interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Derivative Contract [Domain] Derivative Contract [Domain] Power generation storage capacity, megawatts Power Generation Storage Capacity, Megawatts Power Generation Storage Capacity, Megawatts Less: Income (loss) attributable to noncontrolling interests and redeemable noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Total other liabilities Liabilities, Noncurrent Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] 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 Laredo Ridge, Due 2028; Tapestry Wind, LLC, Due 2031; and Viento Funding II, LLC, Due 2023 Laredo Ridge, Due 2028; Tapestry Wind, LLC, Due 2031; and Viento Funding II, LLC, Due 2023 [Member] Laredo Ridge, Due 2028; Tapestry Wind, LLC, Due 2031; and Viento Funding II, LLC, Due 2023 Measurement Frequency [Axis] Measurement Frequency [Axis] Net Cash Provided by Operating Activities Net Cash Provided by (Used in) Operating Activities Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Schedule of long-term debt Schedule of Debt [Table Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] 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 Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Expected contributions upon substantial completion Proceeds from Noncontrolling Interests, Expected Upon Substantial Completion Proceeds from Noncontrolling Interests, Expected Upon Substantial Completion Earnings per weighted average common share — diluted (in dollars per share) Earnings Per Share, Diluted Weighted average number of common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Segment [Domain] Segments [Domain] State of Hawaii State and Local Jurisdiction [Member] Amortization of financing costs and debt discounts Amortization of Debt Issuance Costs and Discounts Reduction in carrying amount of right-of-use assets Operating Lease, Right-of-Use Asset, Amortization Expense Acquisitions and Dispositions Mergers, Acquisitions and Dispositions Disclosures [Text Block] Interest Expense Interest Expense [Member] Comprehensive Income Attributable to Clearway Energy, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Cost of operations, exclusive of depreciation, amortization and accretion shown separately below Cost of Revenue Net Cash (Used in) Provided by Financing Activities Net Cash Provided by (Used in) Financing Activities 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 Deferred income taxes Deferred Income Tax Liabilities, Net Related Party Transaction Related Party Transaction [Line Items] Equity in earnings of unconsolidated affiliates Equity in earnings of unconsolidated affiliates Equity in earnings of unconsolidated affiliates Income (Loss) from Equity Method Investments Derivative instruments Derivative Liability, Noncurrent Alta TE Holdco Alta X and XI TE Holdco [Member] Alta X and XI TE Holdco [Member] Ownership interest (as a percentage) Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Cost of operations, exclusive of depreciation, amortization and accretion shown separately below Other Cost and Expense, Operating Reconciliation of the U.S. federal statutory rate to the Company's effective rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Accounts payable — trade Accounts Payable, Current San Juan Mesa San Juan Mesa [Member] San Juan Mesa Depreciation, amortization and accretion Depreciation, Depletion and Amortization AOCI Attributable to Noncontrolling Interest AOCI Attributable to Noncontrolling Interest [Member] Schedule of Fair Value, Assets and Liabilities Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Common stock dividends and distributions to CEG unit holders Dividends, Common Stock Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] Total other assets Other current and non-current assets Other Assets Disposition, intangible assets, percent Disposal Group, Including Discontinued Operations, Intangible Assets, Percent Disposal Group, Including Discontinued Operations, Intangible Assets, Percent Common stock outstanding (in shares) Common Stock, Shares, Outstanding Financial Instruments [Domain] Financial Instruments [Domain] Derivative [Table] Derivative [Table] Long Long [Member] Alta Wind Asset Management LLC, due 2031 Alta Wind Asset Management LLC, Due 2031 [Member] Alta Wind Asset Management LLC, Due 2031 Operating Revenues Revenues [Abstract] Other Other Consolidated Variable Interest Entities [Member] Other Consolidated Variable Interest Entities Document Period End Date Document Period End Date Common Class B Common Class B [Member] Repayment of debt at asset acquisition Repayment of Debt, Acquired in Asset Acquisition Repayment of Debt, Acquired in Asset Acquisition Entity Central Index Key Entity Central Index Key Carlsbad Energy Holdings LLC, due 2027 Carlsbad Energy Holdings LLC, due 2027 [Member] Carlsbad Energy Holdings LLC, due 2027 Consolidated Entities [Domain] Consolidated Entities [Domain] Long Term Debt Current Long Term Debt Current [Member] Long Term Debt Current [Member] Schedule of Accumulated Amortization and Depreciation Property, Plant and Equipment [Table Text Block] 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] Income Statement Location [Domain] Income Statement Location [Domain] Property, plant and equipment Property, Plant and Equipment, Additions, Net Property, Plant and Equipment, Additions, Net 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] Derivative asset/liability measurement input Derivative Asset (Liability) Net, Measurement Input Tax Equity Investors Tax Equity Investors [Member] Tax Equity Investors [Member] Wildorado TE Holdco Wildorado TE Holdco [Member] Wildorado TE Holdco Property, plant and equipment, net Property, plant and equipment Property, Plant and Equipment, Net 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. AOCI Including Portion Attributable to Noncontrolling Interest AOCI Including Portion Attributable to Noncontrolling Interest [Member] Other non-current liabilities Other Liabilities, Noncurrent Derivative assets, Derivative Instruments Derivative Asset, Fair Value, Gross Liability Debt Instrument [Line Items] Debt Instrument [Line Items] Payments for short-term and long-term debt Repayments of Long-term Debt Trading Symbol Trading Symbol Earnings Per Share Attributable to Clearway Energy, Inc. Class A and Class C Common Stockholders Earnings Per Share [Abstract] Derivative asset Derivative asset, Net Amount Derivative Asset Clearway Energy LLC Clearway Energy LLC [Member] Clearway Energy LLC [Member] Purchases Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases Total operating revenues Operating revenues Revenues 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 Public Shareholders Public Shareholders [Member] Public Shareholders Add premiums Debt Instrument, Unamortized Premium Derivative liability, Derivative Instruments Derivative Liability, Fair Value, Gross Asset Disposition, property, plant and equipment, percent Disposal Group, Including Discontinued Operations, Property, Plant and Equipment, Percent Disposal Group, Including Discontinued Operations, Property, Plant and Equipment, Percent Consideration transferred in asset acquisition Asset Acquisition, Consideration Transferred Summary of Significant Accounting Policies [Line Items] Summary of Significant Accounting Policies [Line Items] [Line Items] for Summary of Significant Accounting Policies [Table] Avenal Avenal [Member] Avenal Other Income (Expense) Costs and Expenses [Abstract] Total long-term debt Long-term Debt, Excluding Current Maturities Asset Acquisition [Domain] Asset Acquisition [Domain] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Entity Current Reporting Status Entity Current Reporting Status Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility, due 2023 Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility [Member] Clearway Energy LLC and Clearway Energy Operating LLC Revolving Credit Facility Effective income tax rate Effective Income Tax Rate Reconciliation, Percent NIMH Solar, due 2024 NIMH Solar, due 2024 [Member] NIMH Solar, due 2024 Global Infrastructure Partners Global Infrastructure Partners [Member] Global Infrastructure Partners Net Income (Loss) Net Income (Loss) Net Income (Loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Counterparty Name [Axis] Counterparty Name [Axis] Common Class A Common Class A [Member] 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 Equivalents, Restricted Cash and Restricted Cash Equivalents Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Mililani I Drop Down Mililani I Drop Down Mililani I Drop Down [Member] Mililani I Drop Down Current Assets Assets, Current [Abstract] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Other Proceeds from (Payments for) Other Financing Activities LIBOR London Interbank Offered Rate (LIBOR) [Member] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Underlying Asset Class [Domain] Underlying Asset Class [Domain] Purpose [Domain] Purpose [Domain] Purpose Right-of-use-assets Asset Acquisition, Right-of-use asset Asset Acquisition, Right-of-use asset Weighted average number of common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Other comprehensive income Mark-to-market of cash flow hedge accounting contracts Other Comprehensive Income (Loss), Net of Tax Fair Value, Recurring Fair Value, Recurring [Member] Cash receipts from notes receivable Proceeds from Collection of Notes Receivable Income Taxes Income Tax Disclosure [Text Block] Related Party [Domain] Related Party [Domain] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Debt instrument, basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Bridge Loan, Due 2022 Bridge Loan, Due 2022 [Member] Bridge Loan, Due 2022 Measurement Basis [Axis] Measurement Basis [Axis] Langford TE Partnership LLC Langford TE Partnership LLC [Member] Langford TE Partnership LLC Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] 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 Class of Stock [Line Items] Class of Stock [Line Items] Derivatives Not Designated as Cash Flow Hedges: Not Designated as Hedging Instrument [Member] Entity Address, Address Line One Entity Address, Address Line One Net Cash Provided by (Used in) Investing Activities Net Cash Provided by (Used in) Investing Activities Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Transaction expenses Disposal Group, Including Discontinued Operations, Transaction Costs Disposal Group, Including Discontinued Operations, Transaction Costs Cash used in changes in other working capital: Increase (Decrease) in Operating Capital [Abstract] Property, Plant and Equipment Accumulated Depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Cash Flows from Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Entity Shell Company Entity Shell Company Natural Gas Natural Gas [Member] Total current liabilities Liabilities, Current Class of Stock [Domain] Class of Stock [Domain] 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. Common Class D Common Class D [Member] Common Class D [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Ownership [Domain] Ownership [Domain] Long-term debt, additions Asset Acquisition, Long-term Debt, Additions Asset Acquisition, Long-term Debt, Additions Position [Domain] Position [Domain] Current Fiscal Year End Date Current Fiscal Year End Date Unamortized debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Cash Distribution Cash Distribution [Member] Statement [Table] Statement [Table] Recently Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Changes in derivative instruments Increase (Decrease) in Derivative Assets and Liabilities Current assets held-for-sale Assets Held-for-sale, Not Part of Disposal Group, Current Prepayments and other current assets Prepaid Expenses and Other Current Assets [Member] Company Structure Organizational Structure [Table Text Block] Org Structure [Table Text Block] Offsetting of derivatives by counterparty master agreement level and collateral received or paid Offsetting Liabilities [Table Text Block] Statistical Measurement [Axis] Statistical Measurement [Axis] Non-cash adjustments for change in tax basis Adjustments to Additional Paid in Capital, Other Derivative Liabilities Derivative liability, Gross Amounts of Recognized Assets/Liabilities Derivative Liability, Fair Value, Gross Liability Subsequent Event Subsequent Event [Member] Preferred Stock Preferred Stock [Member] Distributions to CEG of escrowed amounts Payments of Distributions to Affiliates Intangible assets for power purchase agreements, net Intangible assets Finite-Lived Intangible Assets, Net Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] 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 Acquisitions, net of cash acquired Payments for asset acquisition Payments for Asset Acquisition Payments for Asset Acquisition Scenario [Domain] Scenario [Domain] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Additions due to loss of NPNS exception Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Additions for Loss of NPNS Exception Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Additions for Loss of NPNS Exception Utah Solar Holdings, due 2036 Utah Solar Holdings, due 2036 [Member] Utah Solar Holdings, due 2036 Related Party Transactions Related Party Transactions Disclosure [Text Block] Interest Interest [Member] Details pertaining to interest rate swaps which are considered a derivative commodity. Long-term Debt Long-term Debt [Text Block]