Acquisitions, Goodwill, and Other Intangible Assets, Net - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Acquisition consideration:
Cash, net of cash acquired	$ 68,817	$ 71,841
Identifiable assets acquired and liabilities assumed:
Goodwill	2,118,866		$ 2,045,041
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	220,500
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	(327,100)
Long-term debt, including finance lease obligations	(330,800)
Long-term liabilities, primarily operating lease liabilities and deferred income taxes	(104,100)
Total identifiable net assets	178,000
Goodwill	570,500
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	30,000
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	36,000
Goodwill	15,500
Total net assets acquired, including goodwill	51,500
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	2,800		$ 3,000
Total consideration	800,000
Identifiable assets acquired and liabilities assumed:
Accounts receivable and contract assets	576,100
Current assets	36,100
Property and equipment	250,500
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	(328,500)
Long-term debt, including finance lease obligations	(331,000)
Long-term liabilities, primarily operating lease liabilities and deferred income taxes	(104,300)
Total identifiable net assets	214,000
Goodwill	586,000
Total net assets acquired, including goodwill	$ 800,000