Accounts Receivable, Net of Allowance, and Contract Assets and Liabilities - Schedule of Accounts Receivable, Net of Allowance and Contract Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Receivables [Abstract]
Contract billings	$ 1,471,000	$ 1,385,200
Less allowance	(17,400)	(15,100)
Accounts receivable, net of allowance	1,453,579	1,370,074
Contract Assets [Abstract]
Retainage	324,700	356,400
Unbilled receivables	1,321,500	1,400,000
Contract assets	$ 1,646,169	$ 1,756,381