Revenue from Contracts with Customers (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Performance obligation satisfied in previous period	$ 0	$ 6,100,000	$ 0
Change in estimate of transaction price	0	0	0
Change in total estimated cost	0	0	0
Loss on contracts	0	0	$ 0
Unbilled revenues for unapproved change orders	24,100,000	15,300,000
Claims on uncompleted contracts	2,500,000	0
Accounts receivable, unapproved contract claims	0	0
Accounts receivable, contractually billed amounts on contracts related to unapproved contract claims	130,700,000	87,900,000
Net contract liabilities on uncompleted construction projects	500,348,000	496,796,000
Contract asset impairment	0	0
Accounts receivable, retainage	$ 375,300,000	323,900,000
Accounts receivable, retainage estimated to be collected in next fiscal year	90.00%
Accounts payable, retainage	$ 71,100,000	$ 59,800,000
Accounts payable, retainage estimated to be paid in next fiscal year	90.00%
Remaining performance obligations	$ 5,599,297,000
2021 Acquisitions
Business Acquisition [Line Items]
Increase (decrease) in contract assets from acquisitions	8,100,000
Increase (decrease) in contract liabilities from acquisitions	23,200,000
Excluding 2021 Acquisitions
Business Acquisition [Line Items]
Decrease in net contract liabilities	$ 7,200,000