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Revenue Recognition and Related Balance Sheet Accounts - Revenue Disaggregated by Geographic Location and Contract Type (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 5,031,819 | $ 4,428,826
Percent of total revenues (in percent) | 100.00% | 100.00%
United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 4,569,716 | $ 3,666,365
Percent of total revenues (in percent) | 90.80% | 82.80%
Canada |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 229,427 | $ 542,360
Percent of total revenues (in percent) | 4.60% | 12.20%
Australia |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 146,029 | $ 154,677
Percent of total revenues (in percent) | 2.90% | 3.50%
Others |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 86,647 | $ 65,424
Percent of total revenues (in percent) | 1.70% | 1.50%
Fixed price contracts |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 2,672,315 | $ 1,934,888
Percent of total revenues (in percent) | 53.10% | 43.70%
Unit-price contracts |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 1,427,507 | $ 1,497,394
Percent of total revenues (in percent) | 28.40% | 33.80%
Cost-plus contracts |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 931,997 | $ 996,544
Percent of total revenues (in percent) | 18.50% | 22.50%

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