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Acquisitions, Goodwill and Other Intangible Assets, Net - Pro Forma Financial Information and Acquisition Results and Integration Costs (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Business Combinations [Line Items]      
Business combinations, unaudited supplemental pro forma revenue $ 12,000.0 $ 11,600.0 $ 12,300.0
Business combinations, unaudited supplemental pro forma net income (61.3) 7.4 229.1
Business combinations, consolidated acquisition-related revenue 1,546.3 2,990.1 1,021.8
Business combinations, consolidated acquisition-related net income (loss) (40.0) 53.9 6.6
2023 Acquisitions, Infrastructure Energy Alternatives, Inc.      
Business Combinations [Line Items]      
Business combinations, consolidated acquisition-related revenue 1,374.6    
IEA      
Business Combinations [Line Items]      
Business combinations, consolidated acquisition-related revenue   567.2  
2022 Acquisitions, All Other, INTREN      
Business Combinations [Line Items]      
Business combinations, consolidated acquisition-related revenue   1,902.4  
All other, INTREN acquisition      
Business Combinations [Line Items]      
Business combinations, consolidated acquisition-related revenue     436.0
2023 Acquisitions      
Business Combinations [Line Items]      
Business combinations, consolidated acquisition-related revenue 145.9    
Business combinations, consolidated acquisition-related net income (loss) (5.9)    
Acquisition and integration costs 71.9    
2023 Acquisitions | General and Administrative Expense      
Business Combinations [Line Items]      
Acquisition and integration costs 64.1    
2023 Acquisitions | Cost of Sales      
Business Combinations [Line Items]      
Acquisition and integration costs 7.8    
2021 Acquisitions      
Business Combinations [Line Items]      
Acquisition and integration costs     3.6
2021 Acquisitions | General and Administrative Expense      
Business Combinations [Line Items]      
Acquisition and integration costs     $ 3.6
2022 and 2023 Acquisitions      
Business Combinations [Line Items]      
Integration related liabilities $ 0.3 5.5  
2022 Acquisitions      
Business Combinations [Line Items]      
Acquisition and integration costs   86.0  
2022 Acquisitions | General and Administrative Expense      
Business Combinations [Line Items]      
Acquisition and integration costs   52.0  
2022 Acquisitions | Cost of Sales      
Business Combinations [Line Items]      
Acquisition and integration costs   29.3  
2022 Acquisitions | Other Expense      
Business Combinations [Line Items]      
Acquisition and integration costs   $ 4.7