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Segment Reporting | 12 Months Ended
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Dec. 31, 2021
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 capital for allocation, as well as net income/(loss) and net income/(loss) attributable to NRG Energy, Inc. The acquired operations of Direct Energy are integrated into the existing NRG segment structure. Domestic customer and market operations are combined into the corresponding geographical segments of Texas, East and West/Services/Other. The West/Services/Other segment includes activity related to the Canadian operations as well as the services businesses. In February 2019, the Company completed the sale and deconsolidation of the South Central Portfolio and Carlsbad. Refer to Note 4, Acquisitions, Discontinued Operations and Dispositions, for further discussion. The Company had no customer that comprised more than 10% of the Company's consolidated revenues during the years ended December 31, 2021, 2020 and 2019. Intersegment sales are accounted for at market.
| For the Year Ended December 31, 2021
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate(a) |  | Eliminations |  | Total
Operating revenues(a) | $ | 10,293 |  |  | $ | 13,033 |  |  | $ | 3,653 |  |  | $ | — |  |  | $ | 10 |  |  | $ | 26,989 |
Operating expenses | 8,692 |  |  | 10,257 |  |  | 3,466 |  |  | 141 |  |  | 10 |  |  | 22,566 |
Depreciation and amortization | 331 |  |  | 338 |  |  | 88 |  |  | 28 |  |  | — |  |  | 785 |
Impairment losses | — |  |  | 535 |  |  | 9 |  |  | — |  |  | — |  |  | 544 |
Total operating cost and expenses | 9,023 |  |  | 11,130 |  |  | 3,563 |  |  | 169 |  |  | 10 |  |  | 23,895 |
Gain on sale of assets | 19 |  |  | — |  |  | 17 |  |  | 211 |  |  | — |  |  | 247 |
Operating income | 1,289 |  |  | 1,903 |  |  | 107 |  |  | 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) from continuing operations before income taxes | 1,293 |  |  | 1,909 |  |  | 102 |  |  | (445) |  |  | — |  |  | 2,859 |
Income tax expense | — |  |  | — |  |  | 19 |  |  | 653 |  |  | — |  |  | 672 |
Net income/(loss) attributable to NRG Energy, Inc. | $ | 1,293 |  |  | $ | 1,909 |  |  | $ | 83 |  |  | $ | (1,098) |  |  | $ | — |  |  | $ | 2,187 |
Balance sheet |  |  |  |  |  |  |  |  |  |  |
Equity investments in affiliates | $ | — |  |  | $ | — |  |  | $ | 157 |  |  | $ | — |  |  | $ | — |  |  | $ | 157 |
Capital expenditures | 153 |  |  | 50 |  |  | 21 |  |  | 45 |  |  | — |  |  | 269 |
Goodwill | 751 |  |  | 853 |  |  | 191 |  |  | — |  |  | — |  |  | 1,795 |
Total assets | $ | 12,265 |  |  | $ | 13,673 |  |  | $ | 4,816 |  |  | $ | 19,081 |  |  | $ | (26,653) |  |  | $ | 23,182 |
(a) Inter-segment sales and inter-segment net derivative gains and losses included in operating revenues | $ | 5 |  |  | $ | (18) |  |  | $ | 3 |  |  | $ | — |  |  | $ | — |  |  | $ | (10) |
| For the Year Ended December 31, 2020
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate(a) |  | Eliminations |  | Total
Operating revenues(a) | $ | 6,309 |  |  | $ | 2,258 |  |  | $ | 530 |  |  | $ | — |  |  | $ | (4) |  |  | $ | 9,093 |
Operating expenses | 5,249 |  |  | 1,758 |  |  | 421 |  |  | 57 |  |  | (4) |  |  | 7,481 |
Depreciation and amortization | 227 |  |  | 138 |  |  | 36 |  |  | 34 |  |  | — |  |  | 435 |
Impairment losses | 14 |  |  | — |  |  | 61 |  |  | — |  |  | — |  |  | 75 |
Total operating cost and expenses | 5,490 |  |  | 1,896 |  |  | 518 |  |  | 91 |  |  | (4) |  |  | 7,991 |
(Loss)/gain on sale of assets | — |  |  | — |  |  | (2) |  |  | 5 |  |  | — |  |  | 3 |
Operating income/(loss) | 819 |  |  | 362 |  |  | 10 |  |  | (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) from continuing operations before income taxes | 800 |  |  | 351 |  |  | 39 |  |  | (429) |  |  | — |  |  | 761 |
Income tax (benefit)/expense | — |  |  | (1) |  |  | 2 |  |  | 250 |  |  | — |  |  | 251 |
Net income attributable to NRG Energy, Inc. | $ | 800 |  |  | $ | 352 |  |  | $ | 37 |  |  | $ | (679) |  |  | $ | — |  |  | $ | 510 |
Balance sheet |  |  |  |  |  |  |  |  |  |  |
Equity investments in affiliates | $ | (13) |  |  | $ | — |  |  | $ | 359 |  |  | $ | — |  |  | $ | — |  |  | $ | 346 |
Capital expenditures | 130 |  |  | 45 |  |  | 30 |  |  | 25 |  |  | — |  |  | 230 |
Goodwill(b) | 324 |  |  | 240 |  |  | 15 |  |  | — |  |  | — |  |  | 579 |
Total assets | $ | 7,641 |  |  | $ | 1,790 |  |  | $ | 1,679 |  |  | $ | 11,152 |  |  | $ | (7,360) |  |  | $ | 14,902 |
(a) Inter-segment sales and inter-segment net derivative gains and losses included in operating revenues | $ | 6 |  |  | $ | (6) |  |  | $ | 4 |  |  | $ | — |  |  | $ | — |  |  | $ | 4 |
(b) Goodwill was allocated based on the regions in which the business operates and are expected to benefit using a relative fair value approach
| For the Year Ended December 31, 2019
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate(a) |  | Eliminations |  | Total
Operating revenues(a) | $ | 7,069 |  |  | $ | 2,262 |  |  | $ | 497 |  |  | $ | — |  |  | $ | (7) |  |  | $ | 9,821 |
Operating expenses | 5,821 |  |  | 1,843 |  |  | 453 |  |  | 50 |  |  | (7) |  |  | 8,160 |
Depreciation and amortization | 188 |  |  | 117 |  |  | 37 |  |  | 31 |  |  | — |  |  | 373 |
Impairment losses | 1 |  |  | — |  |  | 4 |  |  | — |  |  | — |  |  | 5 |
Total operating cost and expenses | 6,010 |  |  | 1,960 |  |  | 494 |  |  | 81 |  |  | (7) |  |  | 8,538 |
Gain on sale of assets | — |  |  | 1 |  |  | — |  |  | 6 |  |  | — |  |  | 7 |
Operating income/(loss) | 1,059 |  |  | 303 |  |  | 3 |  |  | (75) |  |  | — |  |  | 1,290 |
Equity in (losses)/earnings of unconsolidated affiliates | (4) |  |  | — |  |  | 6 |  |  | — |  |  | — |  |  | 2 |
Impairment losses on investments | (103) |  |  | — |  |  | — |  |  | (5) |  |  | — |  |  | (108) |
Other income, net | 20 |  |  | 6 |  |  | 10 |  |  | 30 |  |  | — |  |  | 66 |
Loss on debt extinguishment | — |  |  | — |  |  | (3) |  |  | (48) |  |  | — |  |  | (51) |
Interest expense | — |  |  | (18) |  |  | (10) |  |  | (385) |  |  | — |  |  | (413) |
Income/(loss) from continuing operations before income taxes | 972 |  |  | 291 |  |  | 6 |  |  | (483) |  |  | — |  |  | 786 |
Income tax expense/(benefit) | — |  |  | 2 |  |  | 1 |  |  | (3,337) |  |  | — |  |  | (3,334) |
Net income from continuing operations | 972 |  |  | 289 |  |  | 5 |  |  | 2,854 |  |  | — |  |  | 4,120 |
Gain from discontinued operations, net of income tax | — |  |  | — |  |  | — |  |  | 321 |  |  | — |  |  | 321 |
Net Income | 972 |  |  | 289 |  |  | 5 |  |  | 3,175 |  |  | — |  |  | 4,441 |
Less: Net income attributable to noncontrolling interests and redeemable noncontrolling interests | — |  |  | — |  |  | 3 |  |  | — |  |  | — |  |  | 3 |
Net income attributable to NRG Energy, Inc. | $ | 972 |  |  | $ | 289 |  |  | $ | 2 |  |  | $ | 3,175 |  |  | $ | — |  |  | $ | 4,438 |
(a) Inter-segment sales and inter-segment net derivative gains and losses included in operating revenues | $ | 1 |  |  | $ | 8 |  |  | $ | (2) |  |  | $ | — |  |  | $ | — |  |  | $ | 7 |

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