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Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 2,480,678	$ 950,229
Accumulated Amortization	(682,498)	(517,574)
Total	$ 1,798,180	432,655
Remaining Weighted Average Amortization Period	7 years 4 months 24 days
Indefinite-lived Intangible Assets [Line Items]
Intangible Assets	$ 2,483,678	953,229
Intangible Assets, Net	1,801,180	435,655
Engineering license
Indefinite-lived Intangible Assets [Line Items]
Intangible Assets	3,000	3,000
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	1,738,813	616,875
Accumulated Amortization	(379,417)	(277,647)
Total	$ 1,359,396	339,228
Remaining Weighted Average Amortization Period	6 years 4 months 24 days
Backlog
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 286,120	149,769
Accumulated Amortization	(192,140)	(145,476)
Total	$ 93,980	4,293
Remaining Weighted Average Amortization Period	4 months 24 days
Trade names
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 357,103	101,533
Accumulated Amortization	(41,642)	(32,471)
Total	$ 315,461	69,062
Remaining Weighted Average Amortization Period	14 years 6 months
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 54,022	47,333
Accumulated Amortization	(41,409)	(36,973)
Total	$ 12,613	10,360
Remaining Weighted Average Amortization Period	3 years 8 months 12 days
Patented rights, developed technology, and process certifications
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 31,520	22,486
Accumulated Amortization	(23,458)	(21,894)
Total	$ 8,062	592
Remaining Weighted Average Amortization Period	3 years
Curriculum
Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 13,100	12,233
Accumulated Amortization	(4,432)	(3,113)
Total	$ 8,668	$ 9,120
Remaining Weighted Average Amortization Period	6 years 4 months 24 days

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