Variable Interest Entities (VIEs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Variable Interest Entity [Line Items]
Assets, current	$ 3,396,240		$ 3,396,240		$ 3,521,354
Liabilities, current	2,060,664		2,060,664		2,124,953
Revenue	$ 1,127,470	$ 1,021,751	$ 2,176,457	$ 1,798,051
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	$ 500		$ 500		500
Liabilities, current	100		100		100
Future funding commitments	3,000		3,000
VIEs
Variable Interest Entity [Line Items]
Assets, current	481,200		481,200		503,100
Liabilities, current	452,900		452,900		505,000
Assets, noncurrent	$ 29,400		$ 29,400		$ 35,100