Variable Interest Entities (VIEs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Variable Interest Entity [Line Items]
Assets, current	$ 3,546,169		$ 3,546,169		$ 3,678,771
Liabilities, current	1,956,141		1,956,141		1,967,527
Revenue	$ 1,021,751	$ 861,027	$ 1,798,051	$ 1,813,181
Purple Line Extension Section 2 And Section 3
Variable Interest Entity [Line Items]
Percent interest in the joint venture			75.00%
Newark Airport Terminal One Design Build Project
Variable Interest Entity [Line Items]
Percent interest in the joint venture			80.00%
Related Party | Purple Line Extension Section 2 And Section 3
Variable Interest Entity [Line Items]
Revenue			$ 2,800,000
O&G | Purple Line Extension Section 2 And Section 3
Variable Interest Entity [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners	25.00%		25.00%
Joint Venture With Parsons | Newark Airport Terminal One Design Build Project
Variable Interest Entity [Line Items]
Revenue			$ 1,400,000
Parsons Corporation | Newark Airport Terminal One Design Build Project
Variable Interest Entity [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners	20.00%		20.00%
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets, current	$ 600		$ 600		400
Liabilities, current	200		200
VIEs
Variable Interest Entity [Line Items]
Assets, current	500,400		500,400		527,300
Liabilities, current	541,300		541,300		567,300
Assets, noncurrent	$ 31,900		$ 31,900		$ 22,400