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Property, Plant, and Equipment (Tables) | 6 Months Ended
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Jun. 30, 2025
Property, Plant and Equipment [Abstract] |
Schedule of Components of Depreciation, Amortization and Accretion Expense |
|  |  |  | June 30, 2025 |  | December 31, 2024
|  | Estimated Useful Life (years) |  | Gross Value |  | Accumulated Depreciation |  | Carrying Value |  | Gross Value |  | Accumulated Depreciation |  | Carrying Value
Electric generation |  | 3-27 |  | $ | 3,091 |  |  | $ | (385) |  |  | $ | 2,706 |  |  | $ | 3,030 |  |  | $ | (292) |  |  | $ | 2,738 |
Nuclear fuel |  | 1-6 |  | 403 |  |  | (166) |  |  | 237 |  |  | 322 |  |  | (152) |  |  | 170 |
Other property and equipment |  | 1-26 |  | 61 |  |  | (8) |  |  | 53 |  |  | 90 |  |  | (18) |  |  | 72 |
Capitalized software |  | 1-5 |  | 8 |  |  | (4) |  |  | 4 |  |  | 8 |  |  | (3) |  |  | 5 |
Construction work in progress |  |  |  | 89 |  |  | — |  |  | 89 |  |  | 169 |  |  | — |  |  | 169 |
Property, plant and equipment, net |  |  |  | $ | 3,652 |  |  | $ | (563) |  |  | $ | 3,089 |  |  | $ | 3,619 |  |  | $ | (465) |  |  | $ | 3,154 |
The components of “Depreciation, amortization and accretion” presented on the Consolidated Statements of Operations for the periods were:
|  | Three Months Ended June 30, |  | Six Months Ended June 30, |  |  |
|  | 2025 |  | 2024 |  | 2025 |  | 2024 |  |  |  |  |
Depreciation expense (a) |  | $ | 52 |  |  | $ | 56 |  |  | $ | 107 |  |  | $ | 116 |  |  |  |  |  |
Amortization expense (b) |  | 3 |  |  | 4 |  |  | 8 |  |  | 6 |  |  |  |  |  |
Accretion expense (c) |  | 15 |  |  | 15 |  |  | 29 |  |  | 28 |  |  |  |  |  |
Depreciation, amortization and accretion |  | $ | 70 |  |  | $ | 75 |  |  | $ | 144 |  |  | $ | 150 |  |  |  |  |  |
__________________ (a)Electric generation and other property and equipment. (b)Intangible assets and capitalized software. (c)ARO and accrued environmental cost accretion. See Note 8 for additional information.

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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