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Segment Reporting | 9 Months Ended
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Sep. 30, 2020
Segment Reporting [Abstract] |
Segment Reporting | Segment Reporting The Company’s segment structure reflects how management currently operates and allocates resources. The Company's businesses are segregated based on conventional power generation, renewable businesses which consist of solar and wind, and the thermal and chilled water business. The Corporate segment reflects the Company's corporate costs. The Company'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, and CAFD, as well as economic gross margin and net income (loss).
| Three months ended September 30, 2020
(In millions) | Conventional Generation |  | Renewables |  | Thermal |  | Corporate |  | Total
Operating revenues | $ | 116 |  |  | $ | 157 |  |  | $ | 59 |  |  | $ | — |  |  | $ | 332 |
Cost of operations | 21 |  |  | 33 |  |  | 41 |  |  | — |  |  | 95 |
Depreciation, amortization and accretion | 34 |  |  | 61 |  |  | 7 |  |  | — |  |  | 102 |
General and administrative | — |  |  | — |  |  | 1 |  |  | 8 |  |  | 9 |
Transaction and integration costs | — |  |  | — |  |  | — |  |  | 1 |  |  | 1 |
Development costs | — |  |  | — |  |  | 2 |  |  | — |  |  | 2 |
Operating income (loss) | 61 |  |  | 63 |  |  | 8 |  |  | (9) |  |  | 123 |
Equity in earnings of unconsolidated affiliates | 3 |  |  | 16 |  |  | — |  |  | — |  |  | 19 |
Other income, net | 1 |  |  | — |  |  | (1) |  |  | — |  |  | — |
Loss on debt extinguishment | — |  |  | (6) |  |  | — |  |  | — |  |  | (6) |
Interest expense | (17) |  |  | (39) |  |  | (6) |  |  | (23) |  |  | (85) |
Income (loss) before income taxes | 48 |  |  | 34 |  |  | 1 |  |  | (32) |  |  | 51 |
Income tax expense | — |  |  | — |  |  | — |  |  | 9 |  |  | 9 |
Net Income (Loss) | $ | 48 |  |  | $ | 34 |  |  | $ | 1 |  |  | $ | (41) |  |  | $ | 42 |
Total Assets | $ | 2,615 |  |  | $ | 6,210 |  |  | $ | 627 |  |  | $ | 273 |  |  | $ | 9,725 |
| Three months ended September 30, 2019
(In millions) | Conventional Generation |  | Renewables |  | Thermal |  | Corporate |  | Total
Operating revenues | $ | 90 |  |  | $ | 151 |  |  | $ | 55 |  |  | $ | — |  |  | $ | 296 |
Cost of operations | 13 |  |  | 35 |  |  | 36 |  |  | — |  |  | 84 |
Depreciation, amortization and accretion | 26 |  |  | 81 |  |  | 7 |  |  | — |  |  | 114 |
General and administrative | — |  |  | 1 |  |  | 1 |  |  | 5 |  |  | 7 |
Development costs | — |  |  | — |  |  | 1 |  |  | — |  |  | 1 |
Operating income (loss) | 51 |  |  | 34 |  |  | 10 |  |  | (5) |  |  | 90 |
Equity in earnings of unconsolidated affiliates | 3 |  |  | 35 |  |  | — |  |  | — |  |  | 38 |
Other income, net | — |  |  | 2 |  |  | — |  |  | — |  |  | 2 |
Interest expense | (13) |  |  | (65) |  |  | (5) |  |  | (23) |  |  | (106) |
Income (loss) before income taxes | 41 |  |  | 6 |  |  | 5 |  |  | (28) |  |  | 24 |
Income tax benefit | — |  |  | — |  |  | — |  |  | (11) |  |  | (11) |
Net Income (Loss) | $ | 41 |  |  | $ | 6 |  |  | $ | 5 |  |  | $ | (17) |  |  | $ | 35 |
| Nine months ended September 30, 2020
(In millions) | Conventional Generation |  | Renewables |  | Thermal |  | Corporate |  | Total
Operating revenues | $ | 326 |  |  | $ | 444 |  |  | $ | 149 |  |  | $ | — |  |  | $ | 919 |
Cost of operations | 67 |  |  | 108 |  |  | 100 |  |  | — |  |  | 275 |
Depreciation, amortization and accretion | 100 |  |  | 182 |  |  | 21 |  |  | — |  |  | 303 |
General and administrative | — |  |  | 1 |  |  | 4 |  |  | 25 |  |  | 30 |
Transaction and integration costs | — |  |  | — |  |  | — |  |  | 2 |  |  | 2 |
Development costs | — |  |  | — |  |  | 4 |  |  | — |  |  | 4 |
Operating income (loss) | 159 |  |  | 153 |  |  | 20 |  |  | (27) |  |  | 305 |
Equity in earnings of unconsolidated affiliates | 6 |  |  | 16 |  |  | — |  |  | — |  |  | 22 |
Gain on sale of unconsolidated affiliate | — |  |  | — |  |  | — |  |  | 49 |  |  | 49 |
Other income, net | 1 |  |  | 1 |  |  | — |  |  | — |  |  | 2 |
Loss on debt extinguishment | — |  |  | (6) |  |  | — |  |  | (3) |  |  | (9) |
Interest expense | (69) |  |  | (190) |  |  | (16) |  |  | (70) |  |  | (345) |
Income (loss) before income taxes | 97 |  |  | (26) |  |  | 4 |  |  | (51) |  |  | 24 |
Income tax expense | — |  |  | — |  |  | — |  |  | 13 |  |  | 13 |
Net Income (Loss) | $ | 97 |  |  | $ | (26) |  |  | $ | 4 |  |  | $ | (64) |  |  | $ | 11 |
| Nine months ended September 30, 2019
(In millions) | Conventional Generation |  | Renewables |  | Thermal |  | Corporate |  | Total
Operating revenues | $ | 253 |  |  | $ | 392 |  |  | $ | 152 |  |  | $ | — |  |  | $ | 797 |
Cost of operations | 44 |  |  | 102 |  |  | 99 |  |  | — |  |  | 245 |
Depreciation, amortization and accretion | 75 |  |  | 194 |  |  | 20 |  |  | — |  |  | 289 |
Impairment losses | — |  |  | — |  |  | 19 |  |  | — |  |  | 19 |
General and administrative | — |  |  | 1 |  |  | 2 |  |  | 17 |  |  | 20 |
Transaction and integration costs | — |  |  | — |  |  | — |  |  | 2 |  |  | 2 |
Development costs | — |  |  | — |  |  | 4 |  |  | — |  |  | 4 |
Operating income (loss) | 134 |  |  | 95 |  |  | 8 |  |  | (19) |  |  | 218 |
Equity in earnings of unconsolidated affiliates | 7 |  |  | 45 |  |  | — |  |  | — |  |  | 52 |
Other income, net | 1 |  |  | 4 |  |  | — |  |  | 1 |  |  | 6 |
Loss on debt extinguishment | — |  |  | (1) |  |  | — |  |  | — |  |  | (1) |
Interest expense | (45) |  |  | (213) |  |  | (13) |  |  | (66) |  |  | (337) |
Income (loss) before income taxes | 97 |  |  | (70) |  |  | (5) |  |  | (84) |  |  | (62) |
Income tax benefit | — |  |  | — |  |  | — |  |  | (14) |  |  | (14) |
Net Income (Loss) | $ | 97 |  |  | $ | (70) |  |  | $ | (5) |  |  | $ | (70) |  |  | $ | (48) |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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