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Quarterly Financial Data (Unaudited) - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Jun. 30, 2021 | Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Quarterly Data |  |  |  |  |  |  |
Procurement and subcontractor cost growth, delays and disruption costs |  | $ 138,000 |  |  |  |  |
Loss on pension settlement | $ 198,000 |  |  |  |  |  |
Asset impairments |  |  |  | $ 103,000 |  | $ 0 | $ 29,485
Charges from project positions due to Covid-19 related schedule delays and associated cost growth |  |  |  | 50,000 |  |  |
Impairment expense |  |  | $ 46,000 | 295,000 | $ 246,285 | $ 340,939 | $ 96,763
Energy Solutions |  |  |  |  |  |  |
Quarterly Data |  |  |  |  |  |  |
Charges for current expected credit losses |  |  |  | $ 55,000 |  |  |

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