Variable Interest Entities (VIEs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Current assets	$ 3,521,354	$ 3,678,771
Current liabilities	2,124,953	1,967,527
Revenue	$ 3,880,227	3,790,755	$ 4,641,830
Purple Line Extension Section2 and Section3
Variable Interest Entity [Line Items]
Percent interest in the joint venture	75.00%
Purple Line Extension Section2 and Section3 | Related Party
Variable Interest Entity [Line Items]
Revenue	$ 2,800,000
Purple Line Extension Section2 and Section3 | O&G
Variable Interest Entity [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners	25.00%
Newark Airport Terminal One Design Build Project
Variable Interest Entity [Line Items]
Percent interest in the joint venture	80.00%
Newark Airport Terminal One Design Build Project | Joint Venture with Parsons
Variable Interest Entity [Line Items]
Revenue	$ 1,400,000
Newark Airport Terminal One Design Build Project | Parsons Corporation
Variable Interest Entity [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners	20.00%
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Current assets	$ 500	400
Current liabilities	100
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Current assets	503,100	527,300
Current liabilities	505,000	567,300
Noncurrent assets	$ 35,100	$ 22,400