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Operating Information by Segment and Geographic Area - Other Segment Profit (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Operating income (Loss) | $ 463 | $ 147 | $ 209
Reportable segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (Loss) | 635 | 537 | 427
Reportable segments | Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (Loss) | (78) | (228) | (27)
Reportable segments | Other | NuScale |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (Loss) | (100) | (106) | (73)
Reportable segments | Other | Stork |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (Loss) | 23 | (55) | 45
Reportable segments | Other | AMECO |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating income (Loss) | $ (1) | $ (67) | $ 1

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