Variable Interest Entities (VIEs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Variable Interest Entity [Line Items]
Assets, current	$ 3,466,714		$ 3,521,354
Liabilities, current	2,043,207		2,124,953
Revenue	$ 1,048,987	$ 776,300
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%
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%
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets, current	$ 500		500
Liabilities, current	100		100
VIEs
Variable Interest Entity [Line Items]
Assets, current	473,200		503,100
Liabilities, current	481,200		505,000
Assets, noncurrent	$ 33,800		$ 35,100