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Segment Reporting | 9 Months Ended
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Sep. 30, 2020
Segment Reporting [Abstract] |
Segment Reporting | Segment Reporting As part of perfecting the integrated model, in which the majority of the Company’s generation serves its retail customers, the Company began managing its operations based on the combined results of the retail and wholesale generation businesses with a geographical focus in 2020. As a result, the Company changed its business segments from Retail and Generation to Texas, East and West/Other beginning in the first quarter of 2020, as further described in Note 1, Nature of Business. The Company's updated segment structure reflects how management currently makes financial decisions and allocates resources The financial information for the three and nine months ended September 30, 2019 was recast to reflect the current segment structure. In February 2019, as described in Note 4, Acquisitions, Discontinued Operations and Dispositions, the Company completed the sales of the South Central Portfolio and Carlsbad. The financial information for the three and nine months ended September 30, 2019 presented below reflects the presentation of these entities as discontinued operations within the corporate segment. NRG’s chief operating decision maker, its chief executive officer, evaluates the performance of its segments based on operational measures including adjusted earnings before interest, taxes, depreciation and amortization, or Adjusted EBITDA, free cash flow and allocation of capital, as well as net income/(loss).
|  | Three months ended September 30, 2020
(In millions) |  | Texas |  | East |  | West/Other |  | Corporate |  | Eliminations |  | Total
Operating revenues |  | $ | 1,992 |  |  | $ | 693 |  |  | $ | 122 |  |  | $ | — |  |  | $ | 2 |  |  | $ | 2,809 |
Depreciation and amortization |  | 49 |  |  | 34 |  |  | 9 |  |  | 7 |  |  | — |  |  | 99 |
Impairment losses |  | — |  |  | — |  |  | 29 |  |  | — |  |  | — |  |  | 29 |
Equity in earnings of unconsolidated affiliates |  | — |  |  | — |  |  | 36 |  |  | — |  |  | — |  |  | 36 |
Income/(loss) from continuing operations before income taxes |  | 288 |  |  | 149 |  |  | 17 |  |  | (113) |  |  | — |  |  | 341 |
Income/(loss) from continuing operations |  | 288 |  |  | 149 |  |  | 17 |  |  | (205) |  |  | — |  |  | 249 |
Net income/(loss) attributable to NRG Energy, Inc |  | $ | 288 |  |  | $ | 149 |  |  | $ | 17 |  |  | $ | (205) |  |  | $ | — |  |  | $ | 249 |
|  | Three months ended September 30, 2019
(In millions) |  | Texas |  | East |  | West/Other |  | Corporate |  | Eliminations |  | Total
Operating revenues |  | $ | 2,208 |  |  | $ | 679 |  |  | $ | 111 |  |  | $ | — |  |  | $ | (2) |  |  | $ | 2,996 |
Depreciation and amortization |  | 45 |  |  | 31 |  |  | 8 |  |  | 7 |  |  | — |  |  | 91 |
Equity in earnings of unconsolidated affiliates |  | 1 |  |  | — |  |  | 28 |  |  | — |  |  | — |  |  | 29 |
Income/(loss) from continuing operations before income taxes |  | 348 |  |  | 121 |  |  | 16 |  |  | (106) |  |  | 1 |  |  | 380 |
Income/(loss) from continuing operations |  | 348 |  |  | 121 |  |  | 15 |  |  | (111) |  |  | 1 |  |  | 374 |
Loss from discontinued operations, net of tax |  | — |  |  | — |  |  | — |  |  | (2) |  |  | — |  |  | (2) |
Net income/(loss) |  | 348 |  |  | 121 |  |  | 15 |  |  | (113) |  |  | 1 |  |  | 372 |
Net income/(loss) attributable to NRG Energy, Inc. |  | $ | 348 |  |  | $ | 121 |  |  | $ | 15 |  |  | $ | (113) |  |  | $ | 1 |  |  | $ | 372 |
|  | Nine months ended September 30, 2020
(In millions) |  | Texas |  | East |  | West/Other |  | Corporate |  | Eliminations |  | Total
Operating revenues |  | $ | 4,928 |  |  | $ | 1,798 |  |  | $ | 341 |  |  | $ | — |  |  | $ | (1) |  |  | $ | 7,066 |
Depreciation and amortization |  | 167 |  |  | 100 |  |  | 25 |  |  | 26 |  |  | — |  |  | 318 |
Impairment losses |  | — |  |  | — |  |  | 29 |  |  | — |  |  | — |  |  | 29 |
Gain on sale of assets |  | — |  |  | — |  |  | 1 |  |  | 5 |  |  | — |  |  | 6 |
Equity in (losses)/earnings of unconsolidated affiliates |  | (3) |  |  | — |  |  | 40 |  |  | — |  |  | — |  |  | 37 |
Income/(loss) from continuing operations before income taxes |  | 800 |  |  | 319 |  |  | 84 |  |  | (304) |  |  | — |  |  | 899 |
Income/(loss) from continuing operations |  | 800 |  |  | 319 |  |  | 83 |  |  | (519) |  |  | — |  |  | 683 |
Net income/(loss) attributable to NRG Energy, Inc |  | $ | 800 |  |  | $ | 319 |  |  | $ | 83 |  |  | $ | (519) |  |  | $ | — |  |  | $ | 683 |
|  | Nine months ended September 30, 2019
(In millions) |  | Texas |  | East |  | West/Other |  | Corporate |  | Eliminations |  | Total
Operating revenues |  | $ | 5,511 |  |  | $ | 1,812 |  |  | $ | 310 |  |  | $ | — |  |  | $ | (7) |  |  | $ | 7,626 |
Depreciation and amortization |  | 125 |  |  | 87 |  |  | 26 |  |  | 23 |  |  | — |  |  | 261 |
Reorganization costs |  | 5 |  |  | — |  |  | — |  |  | 11 |  |  | — |  |  | 16 |
Gain on sale of assets |  | — |  |  | 1 |  |  | — |  |  | 1 |  |  | — |  |  | 2 |
Equity in (losses)/earnings of unconsolidated affiliates |  | (5) |  |  | — |  |  | 13 |  |  | — |  |  | — |  |  | 8 |
Loss on debt extinguishment, net |  | — |  |  | — |  |  | — |  |  | (47) |  |  | — |  |  | (47) |
Income/(loss) from continuing operations before income taxes |  | 757 |  |  | 280 |  |  | 11 |  |  | (382) |  |  | — |  |  | 666 |
Income/(loss) from continuing operations |  | 757 |  |  | 280 |  |  | 10 |  |  | (390) |  |  | — |  |  | 657 |
Income from discontinued operations, net of tax |  | — |  |  | — |  |  | — |  |  | 399 |  |  | — |  |  | 399 |
Net income |  | 757 |  |  | 280 |  |  | 10 |  |  | 9 |  |  | — |  |  | 1,056 |
Net income attributable to NRG Energy, Inc. |  | $ | 757 |  |  | $ | 280 |  |  | $ | 9 |  |  | $ | 9 |  |  | $ | — |  |  | $ | 1,055 |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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