Segments and Related Information - Schedule of Financial Information by Reportable Segment - Depreciation and Amortization (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Depreciation and Amortization:
Consolidated depreciation and amortization	$ 108.9	$ 141.1
Operating Segments | Communications
Depreciation and Amortization:
Consolidated depreciation and amortization	16.1	20.8
Operating Segments | Clean Energy and Infrastructure
Depreciation and Amortization:
Consolidated depreciation and amortization	27.7	32.3
Operating Segments | Power Delivery
Depreciation and Amortization:
Consolidated depreciation and amortization	37.1	46.9
Operating Segments | Pipeline Infrastructure
Depreciation and Amortization:
Consolidated depreciation and amortization	25.8	38.7
Operating Segments | Other
Depreciation and Amortization:
Consolidated depreciation and amortization	0.0	0.0
Corporate
Depreciation and Amortization:
Consolidated depreciation and amortization	$ 2.2	$ 2.4