Accounts Receivable, Net of Allowance, and Contract Assets and Liabilities - Schedule of Accounts Receivable, Net of Allowance, and Contract Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Contract billings	$ 1,027,100	$ 805,000
Less allowance	(7,800)	(20,500)
Accounts receivable, net of allowance	1,019,324	784,488
Contract Assets [Abstract]
Retainage	296,800	287,700
Unbilled receivables	931,100	682,000
Contract assets	$ 1,227,927	$ 969,743