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Operating Information by Segment and Geographic Area - Narrative (Details) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) project $ / shares | Dec. 31, 2019 USD ($) project $ / shares
Segment Reporting Information [Line Items] |  |  |
Charges from write-off of embedded foreign currency derivatives |  |  | $ 26,000
Charges from write-off of embedded foreign currency derivatives (in dollars per share) | $ / shares |  |  | $ 0.19
Capital contributions by NCI | $ 201,847 | $ 110,051 | $ 64,646
Energy Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Recognition of reserves for expected credit losses |  | $ 60,000 |
Change in cost and schedule impacts |  |  | $ 87,000
Change in cost and schedule impacts (in dollars per share) | $ / shares |  |  | $ 0.62
Number of projects | project |  |  | 2
Energy Solutions | Write-off of pre-contract costs |  |  |
Segment Reporting Information [Line Items] |  |  |
Charges from write-off of pre-contract costs |  |  | $ 26,000
Charges from write-off of pre-contract costs (in dollars per share) | $ / shares |  |  | $ 190,000
Energy Solutions | Close-out matters |  |  |
Segment Reporting Information [Line Items] |  |  |
Pre-tax charges associated with forecast revisions |  |  | $ 31,000
Pre-tax charges adversely affecting earnings before taxes (in dollars per share) | $ / shares |  |  | $ 0.22
Energy Solutions | North America | Forecast revisions for estimated cost Growth on an offshore project |  |  |
Segment Reporting Information [Line Items] |  |  |
Pre-tax charges associated with forecast revisions |  |  | $ 260,000
Pre-tax charges adversely affecting earnings before taxes (in dollars per share) | $ / shares |  |  | $ 1.85
Energy Solutions | Single customer | Consolidated revenue | Customer concentration |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk (as a percentage) | 15.00% | 13.00% | 13.00%
Urban Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Gains related to favorable dispute resolution |  |  | $ (31,000)
Gains related to favorable dispute resolution (in dollars per share) | $ / shares |  |  | $ 0.16
Mission Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of projects | project |  | 3 |
Mission Solutions | Settlement of client disputes as well as cost growth related to close-out matters |  |  |
Segment Reporting Information [Line Items] |  |  |
Effect of forecast revision on estimated project cost |  | $ 135,000 |
Effect of forecast revision on estimated project cost (in dollars per share) | $ / shares |  | $ 0.96 |
Mission Solutions | Late engineering changes |  |  |
Segment Reporting Information [Line Items] |  |  |
Effect of forecast revision on estimated project cost |  | $ 133,000 |
Effect of forecast revision on estimated project cost (in dollars per share) | $ / shares |  | $ 0.95 |
Other | Warren project |  |  |
Segment Reporting Information [Line Items] |  |  |
Effect of forecast revision on estimated project cost |  |  | $ 59,000
Effect of forecast revision on estimated project cost (in dollars per share) | $ / shares |  |  | $ 0.42
Other | Radford project |  |  |
Segment Reporting Information [Line Items] |  |  |
Effect of forecast revision on estimated project cost |  |  | $ 83,000
Effect of forecast revision on estimated project cost (in dollars per share) | $ / shares |  |  | $ 0.59
Other | JGC Holdings Corporation, GS Energy And IHI Corporation | Reportable segments | NuScale |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital contributions by NCI | $ 193,000 | $ 9,000 | $ 49,000
Urban Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Effect of forecast revision on estimated project cost | $ 138,000 |  |
Effect of forecast revision on estimated project cost (in dollars per share) | $ / shares | $ 0.72 |  |
Government Segment | Consolidated revenue | Customer concentration |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk (as a percentage) | 24.00% | 20.00% | 17.00%

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