v3.26.3
Business Combinations, Acquisitions, and Business Disposals - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended 9 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Dec. 01, 2025
Jul. 31, 2025
Jun. 30, 2026
Sep. 30, 2026
Sep. 30, 2025
Business Combination, Separately Recognized Transaction [Line Items]              
Gross purchase consideration           $ 0.2 $ 79.9
Certrec Corporation              
Business Combination, Separately Recognized Transaction [Line Items]              
Purchase consideration         $ 82.9    
Gross purchase consideration       $ 80.6      
Certrec Corporation | Nuclear & Safety              
Business Combination, Separately Recognized Transaction [Line Items]              
Percentage of voting shares (as a percent)       100.00%      
Gross purchase consideration         $ 80.6    
Paragon              
Business Combination, Separately Recognized Transaction [Line Items]              
Gross purchase consideration     $ 581.5        
Paragon | Nuclear & Safety              
Business Combination, Separately Recognized Transaction [Line Items]              
Percentage of voting shares (as a percent)     100.00%        
Purchase consideration $ 588.6 $ 588.4          
Gross purchase consideration $ 581.5 $ 581.3