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Operating Information by Segment and Geographic Area - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Apr. 30, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |  |  |
Proceeds from sale of NuScale interest |  |  | $ 0 | $ 107 | $ 0
Capital contributions by NCI |  |  | 10 | $ 21 | $ 202
Disposal Group, Not Discontinued Operations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Proceeds from sale of NuScale interest |  | $ 107 |  |  |
Disposal Group, Not Discontinued Operations | Stork |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cash transferred | $ 31 |  | 31 |  |
Loss on sale of investments | 93 |  |  |  |
Divestiture, negative impact on earnings from foreign currency translation | $ 33 |  |  |  |
Disposal Group, Not Discontinued Operations | AMECO |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Proceeds from divestiture of businesses |  |  | 144 |  |
Loss on sale of investments |  |  | 60 |  |
Divestiture, negative impact on earnings from foreign currency translation |  |  | 35 |  |
Cash divestiture |  |  | 17 |  |
Japan NuScale Innovation | NuScale | Disposal Group, Not Discontinued Operations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Entity's interest in partnership or joint venture (percent) |  | 5.00% |  |  |
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 |  |
Energy Solutions | Pemex | Consolidated revenue | Customer concentration |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration risk (as a percentage) |  |  | 10.00% |  |
Energy Solutions | Shell | Consolidated revenue | Customer concentration |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration risk (as a percentage) |  |  | 10.00% |  |
Energy Solutions | Single customer | Consolidated revenue | Customer concentration |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration risk (as a percentage) |  |  |  | 14.00% | 13.00%
Urban Solutions | International Bridge Project |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Effect of forecast revision on estimated project cost |  |  |  | $ 54 | $ 138
Effect of forecast revision on estimated project cost (in dollars per share) |  |  |  | $ 0.23 | $ 0.72
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 |  |
Urban Solutions | Highway Project |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Effect of forecast revision on estimated project cost |  |  |  | $ 86 |
Effect of forecast revision on estimated project cost (in dollars per share) |  |  |  | $ 0.50 |
Urban Solutions | Automated People Move Project |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Effect of forecast revision on estimated project cost |  |  |  | $ 35 |
Effect of forecast revision on estimated project cost (in dollars per share) |  |  |  | $ 0.20 |
Government Segment | Consolidated revenue | Customer concentration |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Concentration risk (as a percentage) |  |  | 9.00% | 16.00% | 21.00%
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 |  |
Other | JGC Holdings Corporation, GS Energy And IHI Corporation | Reportable segments | NuScale |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Capital contributions by NCI |  |  |  | $ 193 | $ 9

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