Acquisitions, Goodwill and Other Intangible Assets, Net - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Acquisition consideration:
Cash, net of cash acquired	$ 79,933	$ 69,388	$ 635,763
Identifiable assets acquired and liabilities assumed:
Goodwill	2,203,077	2,126,366	$ 2,045,000
2022 Acquisitions
Acquisition consideration:
Cash, net of cash acquired		613,200
Shares transferred		173,700
Estimated fair value of warrants		10,300
Estimated fair value of contingent consideration	$ 3,000	2,800
Total consideration		800,000
Identifiable assets acquired and liabilities assumed:
Accounts receivable and contract assets		576,100
Current assets		36,100
Property and equipment		252,600
Long-term assets, primarily operating lease right-of-use assets		40,900
Amortizing intangible assets		368,100
Accounts payable		(141,100)
Contract liabilities		(152,800)
Current liabilities, primarily accrued expenses		(327,600)
Long-term debt, including finance lease obligations		(331,000)
Long-term liabilities, primarily operating lease liabilities and deferred income taxes		(105,500)
Total identifiable net assets		215,800
Goodwill		584,200
Total net assets acquired, including goodwill		800,000
IEA
Acquisition consideration:
Cash, net of cash acquired		564,500
Shares transferred		173,700
Estimated fair value of warrants		10,300
Estimated fair value of contingent consideration		0
Total consideration		748,500
Identifiable assets acquired and liabilities assumed:
Accounts receivable and contract assets		570,000
Current assets		34,500
Property and equipment		222,500
Long-term assets, primarily operating lease right-of-use assets		40,600
Amortizing intangible assets		362,200
Accounts payable		(136,500)
Contract liabilities		(151,300)
Current liabilities, primarily accrued expenses		(326,200)
Long-term debt, including finance lease obligations		(330,800)
Long-term liabilities, primarily operating lease liabilities and deferred income taxes		(105,300)
Total identifiable net assets		179,700
Goodwill		568,800
Total net assets acquired, including goodwill		748,500
All other
Acquisition consideration:
Cash, net of cash acquired		48,700
Shares transferred		0
Estimated fair value of warrants		0
Estimated fair value of contingent consideration		2,800
Total consideration		51,500
Identifiable assets acquired and liabilities assumed:
Accounts receivable and contract assets		6,100
Current assets		1,600
Property and equipment		30,100
Long-term assets, primarily operating lease right-of-use assets		300
Amortizing intangible assets		5,900
Accounts payable		(4,600)
Contract liabilities		(1,500)
Current liabilities, primarily accrued expenses		(1,400)
Long-term debt, including finance lease obligations		(200)
Long-term liabilities, primarily operating lease liabilities and deferred income taxes		(200)
Total identifiable net assets		36,100
Goodwill		15,400
Total net assets acquired, including goodwill		$ 51,500