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v3.25.0.1

Operating Information by Segment and Geographic Area - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Oct. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Cash divestiture |  |  |  |  | $ 131 | $ 0 | $ 0 |
Disposal Group, Not Discontinued Operations | Stork |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Loss on sale of investments |  | $ 93 |  |  |  |  |  |
Cash transferred |  | 31 |  |  |  | 31 |  |
Divestiture, negative impact on earnings from foreign currency translation |  | $ 33 |  |  |  |  |  |
NuScale cash deconsolidated | $ 67 |  |  |  |  |  |  |
Gain on sale of investments | $ 11 |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operations | AMECO |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Loss on sale of investments |  |  | $ 60 |  |  |  |  |
Divestiture, negative impact on earnings from foreign currency translation |  |  | 35 |  |  |  |  |
NuScale cash deconsolidated |  |  | 144 |  |  |  |  |
Cash divestiture |  |  | $ 17 |  |  |  |  |
NuScale |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Recognized pre-tax gain on deconsolidation |  |  |  | $ 1,600 |  |  |  |
Share price (in dollars per share) |  |  |  |  |  |  |  | $ 13.15
Number of shares retained after deconsolidation |  |  |  | 126,000,000 |  |  |  |
Additional recognized pre-tax gain on deconsolidation |  |  |  | $ 604 |  |  |  |
Urban Solutions | LAX Automated People Mover project |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Effect of forecast revision on estimated project cost |  |  |  |  | $ 59 |  |  |
Effect of forecast revision on estimated project cost (in dollars per share) |  |  |  |  | $ 0.34 |  |  |
Energy Solutions |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Effect of forecast revision on estimated project cost |  |  |  |  | $ 66 |  |  |
Effect of forecast revision on estimated project cost (in dollars per share) |  |  |  |  | $ 0.26 |  |  |
Expense from embedded foreign currency derivatives |  |  |  |  | $ 47 | $ (17) |  |
Energy Solutions | Single customer | Consolidated revenue | Customer concentration |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Concentration risk (as a percentage) |  |  |  |  |  | 10.00% | 14.00% |
Energy Solutions | Upstream Project |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Effect of forecast revision on estimated project cost |  |  |  |  |  | $ 91 |  |
Effect of forecast revision on estimated project cost (in dollars per share) |  |  |  |  |  | $ 0.53 |  |
Government Segment | Consolidated revenue | Customer concentration |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Concentration risk (as a percentage) |  |  |  |  | 16.00% | 9.00% | 16.00% |
Mission Solutions | Weapons Facility Project |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Effect of forecast revision on estimated project cost |  |  |  |  | $ 30 |  |  |
Effect of forecast revision on estimated project cost (in dollars per share) |  |  |  |  | $ 0.17 |  |  |

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