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Segment Reporting (Tables) | 12 Months Ended
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Dec. 31, 2024
Segment Reporting [Abstract] |
Schedule of Segment Reporting Information, by Segment | The table below provides information about the Company’s single business segment, including significant segment expenses, and includes reconciliation to Consolidated Net Income (dollars in millions):
| Years Ended December 31,
| 2024 |  | 2023 |  | 2022
Total revenues | $ | 3,440 |  |  | $ | 2,923 |  |  | $ | 2,647 |
Operating expenses: |  |  |  |  |
Purchased power and fuel | 1,418 |  |  | 1,190 |  |  | 988 |
Operating and maintenance expense: |  |  |  |  |
Generation, transmission and distribution | 436 |  |  | 374 |  |  | 348 |
Administrative and other | 403 |  |  | 341 |  |  | 340 |
Total operating and maintenance expense | 839 |  |  | 715 |  |  | 688 |
Depreciation and amortization | 496 |  |  | 458 |  |  | 417 |
Taxes other than income taxes | 175 |  |  | 164 |  |  | 157 |
Total operating expenses | 2,928 |  |  | 2,527 |  |  | 2,250 |
Income from operations | 512 |  |  | 396 |  |  | 397 |
Interest expense, net: |  |  |  |  |
Interest expense | 226 |  |  | 186 |  |  | 163 |
Allowance for borrowed funds used during construction | (15) |  |  | (13) |  |  | (7) |
Total interest expense, net | 211 |  |  | 173 |  |  | 156 |
Other income, net: | 49 |  |  | 50 |  |  | 31 |
Income before income taxes | 350 |  |  | 273 |  |  | 272 |
Income tax expense | 37 |  |  | 45 |  |  | 39 |
Consolidated net income | $ | 313 |  |  | $ | 228 |  |  | $ | 233 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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