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v3.20.4

Segments Information - Summary of Revenues by Business Lines (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 964,258 | $ 1,004,236 | $ 979,459 | $ 970,993 | $ 1,037,388 | $ 1,023,277 | $ 989,742 | $ 904,405 | $ 3,918,946 | $ 3,954,812 | $ 3,560,508
Federal Solution Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | 453,973 | 498,156 | 482,210 | 477,571 | 500,423 | 486,175 | 478,497 | 422,812 | 1,911,910 | 1,887,907 | 1,479,007
Federal Solution Segment | Space & Geospatial Solutions |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 238,809 | 215,330 | 48,894
Federal Solution Segment | Cyber & Intelligence |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 402,470 | 349,085 | 248,343
Federal Solution Segment | Missile Defense & C5ISR |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 610,025 | 655,224 | 564,425
Federal Solution Segment | Engineered Systems |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 660,606 | 668,268 | 617,345
Critical Infrastructure |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 510,285 | $ 506,080 | $ 497,249 | $ 493,422 | $ 536,965 | $ 537,102 | $ 511,245 | $ 481,593 | 2,007,036 | 2,066,905 | 2,081,501
Critical Infrastructure | Connected Communities |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 431,497 | 419,215 | 540,580
Critical Infrastructure | Mobility Solutions |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 1,575,539 | $ 1,647,690 | $ 1,540,921

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