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Turner & Townsend Acquisition - Summary of Preliminary Estimate of Trademark Acquired (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Nov. 01, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Gross Carrying Amount	$ 392,377		$ 124,222
Turner & Townsend | Customer relationships
Business Acquisition [Line Items]
Finite Lived Intangible Assets, Amount Assigned at Acquisition Date		$ 753,935
Finite Lived Intangible Assets, Accumulated Amortization and Foreign Currency Translation	21,577
Finite-Lived Intangible Assets, Net Carrying Value	$ 732,358
Turner & Townsend | Customer relationships | Minimum
Business Acquisition [Line Items]
Amortization Period	5 years
Turner & Townsend | Customer relationships | Maximum
Business Acquisition [Line Items]
Amortization Period	11 years
Turner & Townsend | Backlog
Business Acquisition [Line Items]
Finite Lived Intangible Assets, Amount Assigned at Acquisition Date		75,407
Finite Lived Intangible Assets, Accumulated Amortization and Foreign Currency Translation	$ 5,255
Finite-Lived Intangible Assets, Net Carrying Value	$ 70,152
Turner & Townsend | Backlog | Minimum
Business Acquisition [Line Items]
Amortization Period	2 years
Turner & Townsend | Backlog | Maximum
Business Acquisition [Line Items]
Amortization Period	4 years
Turner & Townsend | Trademark
Business Acquisition [Line Items]
Indefinite Lived Intangible Assets, Amount Assigned at Acquisition Date		$ 275,626
Indefinite Lived Intangible Assets, Accumulated Amortization and Foreign Currency Translation	$ 3,202
Gross Carrying Amount	$ 272,424

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