0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 9952158 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Nature of Business and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Revenue Recognition link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Acquisitions link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Fair Value of Financial Instruments link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Accounting for Derivative Instruments and Hedging Activities link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Long-term Debt and Finance Leases link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Investments Accounted for by the Equity Method and Variable Interest Entities link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Changes in Capital Structure link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Income Per Share link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Regulatory Matters link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Environmental Matters link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Revenue Recognition (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Acquisitions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Fair Value of Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Accounting for Derivative Instruments and Hedging Activities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Long-term Debt and Finance Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Investments Accounted for by the Equity Method and Variable Interest Entities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Changes in Capital Structure (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Income Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Segment Reporting (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Related Party Transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Nature of Business and Basis of Presentation (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Summary of Significant Accounting Policies - Depreciation and Amortization (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Summary of Significant Accounting Policies - Activity in the Allowance for Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Summary of Significant Accounting Policies - Other Balance Sheet Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Summary of Significant Accounting Policies - Cash and Cash Equivalents, Funds Deposited by Counterparties and Restricted Cash (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Summary of Significant Accounting Policies - Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Revenue Recognition - Performance Obligations Expected Timing of Satisfaction (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Revenue Recognition - Performance Obligations Expected Timing of Satisfaction (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Revenue Recognition - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Revenue Recognition - Contract Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Acquisitions - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Acquisitions - Purchase Consideration - LSP Portfolio (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Acquisitions - Schedule of Assets Acquired and Liabilities Assumed (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Acquisitions - Supplemental Pro Forma Financial Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Fair Value of Financial Instruments - Estimated Carrying Amounts and Fair Value of Long-term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Fair Value of Financial Instruments - Fair Value Hierarchy for Long-term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Fair Value of Financial Instruments - Assets and Liabilities Measured and Recorded at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Fair Value of Financial Instruments - Reconciliation of Level 3 Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Fair Value of Financial Instruments - Contractual Obligations From the Consumer Financing Program (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Fair Value of Financial Instruments - Derivative Fair Value Measurements, Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Fair Value of Financial Instruments - Derivative Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Fair Value of Financial Instruments - Counterparty Credit Risk (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Accounting for Derivative Instruments and Hedging Activities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Accounting for Derivative Instruments and Hedging Activities - Net Notional Volume Buy/Sell of Open Derivative Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Accounting for Derivative Instruments and Hedging Activities - Fair Value within the Derivative Instrument Valuation (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Accounting for Derivative Instruments and Hedging Activities - Offsetting of Derivatives by Counterparty Master Agreement Level and Collateral Received (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Accounting for Derivative Instruments and Hedging Activities - Pre-tax Effects of Economic Hedges Not Designated as Cash Flow Hedges (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Long-term Debt and Finance Leases - Schedule of Long-term Debt and Finance Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Long-term Debt and Finance Leases - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Investments Accounted for by the Equity Method and Variable Interest Entities - Summarized Financial Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Changes in Capital Structure - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Changes in Capital Structure - Changes in NRG's Common Stock Issued and Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Changes in Capital Structure - Schedule of Repurchases Under Share Repurchase Programs (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Changes in Capital Structure - NRG Common Stock Dividends (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Changes in Capital Structure - Treasury Stock Retirements (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Changes in Capital Structure - Capped Call Options (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Changes in Capital Structure - Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Income/(Loss) Per Share - Basic and Diluted EPS (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Segment Reporting (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Related Party Transactions - Schedule of NRG's Material Related Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Commitments and Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Regulatory Matters (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Environmental Matters (Details) link:presentationLink link:calculationLink link:definitionLink