v3.26.3
Segments and Related Information - Schedule of Financial Information by Reportable Segment - Depreciation and Amortization (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Depreciation and Amortization:        
Consolidated depreciation and amortization $ 169.1 $ 104.6 $ 414.6 $ 316.0
Operating Segments | Communications        
Depreciation and Amortization:        
Consolidated depreciation and amortization 15.8 15.8 49.6 45.4
Operating Segments | Clean Energy and Infrastructure        
Depreciation and Amortization:        
Consolidated depreciation and amortization 40.5 26.6 113.6 81.1
Operating Segments | Power Delivery        
Depreciation and Amortization:        
Consolidated depreciation and amortization 69.4 34.2 133.2 106.3
Operating Segments | Pipeline Infrastructure        
Depreciation and Amortization:        
Consolidated depreciation and amortization 41.6 25.7 112.4 76.6
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 $ 1.8 $ 2.3 $ 5.8 $ 6.6