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Segment Reporting | 3 Months Ended
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Mar. 31, 2023
Segment Reporting [Abstract] |
Segment Reporting | Segment Reporting The Company’s segment structure reflects how management currently makes financial decisions and allocates resources. The Company manages its operations based on the combined results of the retail and wholesale generation businesses with a geographical focus. 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). The acquired operations from the Vivint acquisition are reported within the Vivint segment.
|  | Three months ended March 31, 2023
(In millions) |  | Texas |  | East |  | West/Services/Other |  | Vivint(a) |  | Corporate |  | Eliminations |  | Total
Revenue |  | $ | 2,034 |  |  | $ | 4,176 |  |  | $ | 1,374 |  |  | $ | 148 |  |  | $ | — |  |  | $ | (10) |  |  | $ | 7,722 |
Depreciation and amortization |  | 75 |  |  | 30 |  |  | 24 |  |  | 52 |  |  | 9 |  |  | — |  |  | 190 |
Gain on sale of assets |  | — |  |  | 199 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 199 |
Equity in earnings of unconsolidated affiliates |  | — |  |  | — |  |  | 5 |  |  | — |  |  | — |  |  | — |  |  | 5 |
Income/(loss) before income taxes |  | 284 |  |  | (1,402) |  |  | (351) |  |  | (39) |  |  | (163) |  |  | — |  |  | (1,671) |
Net income/(loss) |  | $ | 284 |  |  | $ | (1,402) |  |  | $ | (304) |  |  | $ | (39) |  |  | $ | 126 |  |  | $ | — |  |  | $ | (1,335) |
(a)Vivint includes results of operations following the acquisition date of March 10, 2023
|  | Three months ended March 31, 2022
(In millions) |  | Texas |  | East |  | West/Services/Other |  | Corporate |  | Eliminations |  | Total
Revenue |  | $ | 2,020 |  |  | $ | 4,715 |  |  | $ | 1,144 |  |  | $ | — |  |  | $ | 17 |  |  | $ | 7,896 |
Depreciation and amortization |  | 77 |  |  | 77 |  |  | 21 |  |  | 8 |  |  | — |  |  | 183 |
(Loss) on sale of assets |  | — |  |  | — |  |  | (1) |  |  | (2) |  |  | — |  |  | (3) |
Equity in (losses) of unconsolidated affiliates |  | (1) |  |  | — |  |  | (14) |  |  | — |  |  | — |  |  | (15) |
Income/(loss) before income taxes |  | 771 |  |  | 1,538 |  |  | 129 |  |  | (131) |  |  | — |  |  | 2,307 |
Net income/(loss) |  | $ | 771 |  |  | $ | 1,538 |  |  | $ | 130 |  |  | $ | (703) |  |  | $ | — |  |  | $ | 1,736 |

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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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI https://asc.fasb.org/topic&trid=2134510 + Details
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