Segments and Related Information - Schedule of Financial Information by Reportable Segment - EBITDA (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
EBITDA:
Segment EBITDA	$ 918.8	$ 828.1	$ 1,003.8
Reportable Segments | Communications
EBITDA:
Segment EBITDA	269.2	327.1	269.5
Reportable Segments | Clean Energy and Infrastructure
EBITDA:
Segment EBITDA	132.4	102.8	75.0
Reportable Segments | Oil and Gas
EBITDA:
Segment EBITDA	284.4	163.5	557.6
Reportable Segments | Power Delivery
EBITDA:
Segment EBITDA	207.8	202.9	68.0
Reportable Segments | Other
EBITDA:
Segment EBITDA	$ 25.0	$ 31.8	$ 33.8