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Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 2,097,684 | $ 256,655
Accumulated Amortization | (494,275) | (136,773)
Customer Relationships |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 1,781,264 | 195,435
Accumulated Amortization | (328,540) | (94,690)
Trade Names |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 201,861 | 52,061
Accumulated Amortization | (155,141) | (38,138)
Subcontractor Relationships |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 5,440 | 5,440
Accumulated Amortization | (3,757) | (1,944)
Non-compete Agreements |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 13,519 | 3,719
Accumulated Amortization | (3,243) | $ (2,001)
Developed Technology |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 95,600 |
Accumulated Amortization | $ (3,594) |

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