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Segments and Related Information - Narrative (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
segment
Sep. 30, 2022
USD ($)
Segment Reporting, Other Significant Reconciling Item [Line Items]          
Number of operating segments | segment       5  
Number of reportable segments | segment       5  
2023 Acquisitions          
Segment Reporting, Other Significant Reconciling Item [Line Items]          
Business combination, acquisition and integration related costs $ 21.1     $ 60.9  
Corporate | AVCT          
Segment Reporting, Other Significant Reconciling Item [Line Items]          
Fair value losses related to investment   $ 0.2      
Corporate | AVCT | Common Stock          
Segment Reporting, Other Significant Reconciling Item [Line Items]          
Fair value losses related to investment     $ 0.1   $ 7.2
Corporate | 2023 Acquisitions          
Segment Reporting, Other Significant Reconciling Item [Line Items]          
Business combination, acquisition and integration related costs 0.5   11.2 3.2 18.0
Communications | Operating Segments | 2023 Acquisitions          
Segment Reporting, Other Significant Reconciling Item [Line Items]          
Business combination, acquisition and integration related costs 4.8   0.5 18.3 2.4
Clean Energy and Infrastructure | Operating Segments | 2023 Acquisitions          
Segment Reporting, Other Significant Reconciling Item [Line Items]          
Business combination, acquisition and integration related costs 15.3   1.1 36.9 4.5
Power Delivery | Operating Segments | 2023 Acquisitions          
Segment Reporting, Other Significant Reconciling Item [Line Items]          
Business combination, acquisition and integration related costs $ 0.5   $ 20.4 $ 2.5 $ 34.5