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Segment Reporting | 12 Months Ended
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Dec. 31, 2022
Segment Reporting [Abstract] |
Segment Reporting | Segment Reporting The Company’s segment structure reflects how management 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 Company had no customer that comprised more than 10% of the Company's consolidated revenues during the years ended December 31, 2022, 2021 and 2020. Intersegment sales are accounted for at market.
| For the Year Ended December 31, 2022
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate(a) |  | Eliminations |  | Total
Revenues(a) | $ | 10,057 |  |  | $ | 16,763 |  |  | $ | 4,706 |  |  | $ | — |  |  | $ | 17 |  |  | $ | 31,543 |
Operating expenses | 8,495 |  |  | 16,031 |  |  | 4,108 |  |  | 86 |  |  | 17 |  |  | 28,737 |
Depreciation and amortization | 310 |  |  | 208 |  |  | 85 |  |  | 31 |  |  | — |  |  | 634 |
Impairment losses | — |  |  | 206 |  |  | — |  |  | — |  |  | — |  |  | 206 |
Total operating cost and expenses | 8,805 |  |  | 16,445 |  |  | 4,193 |  |  | 117 |  |  | 17 |  |  | 29,577 |
Gain on sale of assets | 10 |  |  | — |  |  | 45 |  |  | (3) |  |  | — |  |  | 52 |
Operating income | 1,262 |  |  | 318 |  |  | 558 |  |  | (120) |  |  | — |  |  | 2,018 |
Equity in (losses)/earnings of unconsolidated affiliates | (2) |  |  | — |  |  | 8 |  |  | — |  |  | — |  |  | 6 |
Other income, net | 5 |  |  | 10 |  |  | 3 |  |  | 54 |  |  | (16) |  |  | 56 |
Interest expense | — |  |  | (1) |  |  | (32) |  |  | (400) |  |  | 16 |  |  | (417) |
Income/(loss) before income taxes | 1,265 |  |  | 327 |  |  | 537 |  |  | (466) |  |  | — |  |  | 1,663 |
Income tax expense | — |  |  | 1 |  |  | 57 |  |  | 384 |  |  | — |  |  | 442 |
Net income/(loss) | $ | 1,265 |  |  | $ | 326 |  |  | $ | 480 |  |  | $ | (850) |  |  | $ | — |  |  | $ | 1,221 |
Balance sheet |  |  |  |  |  |  |  |  |  |  |
Equity investments in affiliates | $ | — |  |  | $ | — |  |  | $ | 133 |  |  | $ | — |  |  | $ | — |  |  | $ | 133 |
Capital expenditures | 273 |  |  | 7 |  |  | 37 |  |  | 50 |  |  | — |  |  | 367 |
Goodwill | 710 |  |  | 723 |  |  | 217 |  |  | — |  |  | — |  |  | 1,650 |
Total assets | $ | 11,475 |  |  | $ | 19,526 |  |  | $ | 8,139 |  |  | $ | 35,780 |  |  | $ | (45,774) |  |  | $ | 29,146 |
(a) Inter-segment sales and inter-segment net derivative gains and losses included in revenues | $ | 4 |  |  | $ | (26) |  |  | $ | 5 |  |  | $ | — |  |  | $ | — |  |  | $ | (17) |
| For the Year Ended December 31, 2021
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate(a) |  | Eliminations |  | Total
Revenues(a) | $ | 10,295 |  |  | $ | 13,025 |  |  | $ | 3,659 |  |  | $ | — |  |  | $ | 10 |  |  | $ | 26,989 |
Operating expenses | 8,692 |  |  | 10,256 |  |  | 3,467 |  |  | 141 |  |  | 10 |  |  | 22,566 |
Depreciation and amortization | 336 |  |  | 333 |  |  | 88 |  |  | 28 |  |  | — |  |  | 785 |
Impairment losses | — |  |  | 535 |  |  | 9 |  |  | — |  |  | — |  |  | 544 |
Total operating cost and expenses | 9,028 |  |  | 11,124 |  |  | 3,564 |  |  | 169 |  |  | 10 |  |  | 23,895 |
Gain on sale of assets | 19 |  |  | — |  |  | 17 |  |  | 211 |  |  | — |  |  | 247 |
Operating income | 1,286 |  |  | 1,901 |  |  | 112 |  |  | 42 |  |  | — |  |  | 3,341 |
Equity in (losses)/earnings of unconsolidated affiliates | (3) |  |  | — |  |  | 20 |  |  | — |  |  | — |  |  | 17 |
Other income, net | 8 |  |  | 7 |  |  | 3 |  |  | 59 |  |  | (14) |  |  | 63 |
Loss on debt extinguishment | — |  |  | — |  |  | — |  |  | (77) |  |  | — |  |  | (77) |
Interest expense | (1) |  |  | (1) |  |  | (28) |  |  | (469) |  |  | 14 |  |  | (485) |
Income/(loss) before income taxes | 1,290 |  |  | 1,907 |  |  | 107 |  |  | (445) |  |  | — |  |  | 2,859 |
Income tax expense | — |  |  | — |  |  | 19 |  |  | 653 |  |  | — |  |  | 672 |
Net income/(loss) | $ | 1,290 |  |  | $ | 1,907 |  |  | $ | 88 |  |  | $ | (1,098) |  |  | $ | — |  |  | $ | 2,187 |
Balance sheet |  |  |  |  |  |  |  |  |  |  |
Equity investments in affiliates | $ | — |  |  | $ | — |  |  | $ | 157 |  |  | $ | — |  |  | $ | — |  |  | $ | 157 |
Capital expenditures | 153 |  |  | 50 |  |  | 21 |  |  | 45 |  |  | — |  |  | 269 |
Goodwill | 716 |  |  | 853 |  |  | 226 |  |  | — |  |  | — |  |  | 1,795 |
Total assets | $ | 12,271 |  |  | $ | 13,645 |  |  | $ | 4,673 |  |  | $ | 19,051 |  |  | $ | (26,458) |  |  | $ | 23,182 |
(a) Inter-segment sales and inter-segment net derivative gains and losses included in revenues | $ | 5 |  |  | $ | (18) |  |  | $ | 3 |  |  | $ | — |  |  | $ | — |  |  | $ | (10) |
| For the Year Ended December 31, 2020
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate(a) |  | Eliminations |  | Total
Revenues(a) | $ | 6,312 |  |  | $ | 2,249 |  |  | $ | 536 |  |  | $ | — |  |  | $ | (4) |  |  | $ | 9,093 |
Operating expenses | 5,251 |  |  | 1,755 |  |  | 422 |  |  | 57 |  |  | (4) |  |  | 7,481 |
Depreciation and amortization | 233 |  |  | 132 |  |  | 36 |  |  | 34 |  |  | — |  |  | 435 |
Impairment losses | 14 |  |  | — |  |  | 61 |  |  | — |  |  | — |  |  | 75 |
Total operating cost and expenses | 5,498 |  |  | 1,887 |  |  | 519 |  |  | 91 |  |  | (4) |  |  | 7,991 |
(Loss)/gain on sale of assets | — |  |  | — |  |  | (2) |  |  | 5 |  |  | — |  |  | 3 |
Operating income/(loss) | 814 |  |  | 362 |  |  | 15 |  |  | (86) |  |  | — |  |  | 1,105 |
Equity in (losses)/earnings of unconsolidated affiliates | (12) |  |  | — |  |  | 29 |  |  | — |  |  | — |  |  | 17 |
Impairment losses on investments | (18) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (18) |
Other income, net | 11 |  |  | 7 |  |  | 8 |  |  | 41 |  |  | — |  |  | 67 |
Loss on debt extinguishment | — |  |  | (4) |  |  | (5) |  |  | — |  |  | — |  |  | (9) |
Interest expense | — |  |  | (14) |  |  | (3) |  |  | (384) |  |  | — |  |  | (401) |
Income/(loss) before income taxes | 795 |  |  | 351 |  |  | 44 |  |  | (429) |  |  | — |  |  | 761 |
Income tax (benefit)/expense | — |  |  | (1) |  |  | 2 |  |  | 250 |  |  | — |  |  | 251 |
Net income/(loss) | $ | 795 |  |  | $ | 352 |  |  | $ | 42 |  |  | $ | (679) |  |  | $ | — |  |  | $ | 510 |
(a) Inter-segment sales and inter-segment net derivative gains and losses included in revenues | $ | 6 |  |  | $ | (6) |  |  | $ | 4 |  |  | $ | — |  |  | $ | — |  |  | $ | 4 |

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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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