Segments and Related Information - Schedule of Financial Information by Reportable Segment - Depreciation and Amortization (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Depreciation and Amortization:
Consolidated depreciation and amortization	$ 102.6	$ 135.8	$ 211.5	$ 276.9
Operating Segments \| Communications
Depreciation and Amortization:
Consolidated depreciation and amortization	13.4	19.9	29.6	40.7
Operating Segments \| Clean Energy and Infrastructure
Depreciation and Amortization:
Consolidated depreciation and amortization	26.9	31.2	54.6	63.5
Operating Segments \| Power Delivery
Depreciation and Amortization:
Consolidated depreciation and amortization	35.0	46.5	72.1	93.3
Operating Segments \| Pipeline Infrastructure
Depreciation and Amortization:
Consolidated depreciation and amortization	25.1	35.7	50.9	74.3
Operating Segments \| Other
Depreciation and Amortization:
Consolidated depreciation and amortization	0.0	0.0	0.0	0.0
Corporate
Depreciation and Amortization:
Consolidated depreciation and amortization	$ 2.2	$ 2.5	$ 4.3	$ 5.1

- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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