Segments and Related Information - Schedule of Financial Information by Reportable Segment - Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Assets:
Consolidated assets	$ 8,975,275	$ 9,373,511	$ 9,293,300
Reportable Segments | Communications
Assets:
Consolidated assets	2,248,500	2,332,200	2,378,600
Reportable Segments | Clean Energy and Infrastructure
Assets:
Consolidated assets	2,706,400	2,978,800	2,979,900
Reportable Segments | Power Delivery
Assets:
Consolidated assets	1,915,200	1,837,100	1,967,900
Reportable Segments | Pipeline Infrastructure
Assets:
Consolidated assets	1,599,700	1,758,000	1,544,200
Reportable Segments | Other
Assets:
Consolidated assets	318,200	305,000	297,300
Corporate
Assets:
Consolidated assets	$ 187,300	$ 162,400	$ 125,400