v3.26.1
Segment Information - Schedule of Revenue from External Customers by Products and Services (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]        
Total revenues $ 266.8 $ 222.9 $ 524.4 $ 424.9
Nuclear & Safety        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]        
Total revenues 186.2 141.7 371.7 275.1
Medical        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]        
Total revenues 80.6 81.2 152.7 149.8
Nuclear | Nuclear & Safety        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]        
Total revenues 118.1 82.1 243.9 166.3
Labs and research | Nuclear & Safety        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]        
Total revenues 29.1 27.4 57.4 54.2
Other | Nuclear & Safety        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]        
Total revenues 39.0 32.2 70.4 54.6
Cancer care | Medical        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]        
Total revenues 62.8 62.2 118.1 111.1
Other | Medical        
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]        
Total revenues $ 17.8 $ 19.0 $ 34.6 $ 38.7