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Segment Information - Summary of Net Sales, Operating Income (Loss), and Total Assets by Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Segment Reporting Information [Line Items]          
Total net sales $ 442.4 $ 366.7 $ 827.9 $ 696.9  
Total operating income 59.4 46.2 98.9 74.7  
Interest expense 5.6 1.9 10.3 3.2  
Other expense (income), net 1.1 (0.3) 1.2 (0.7)  
Income before income taxes 52.7 44.6 87.4 72.2  
Total assets 1,660.7   1,660.7   $ 1,524.3
Environmental Solutions          
Segment Reporting Information [Line Items]          
Total net sales 373.0 306.3 691.8 580.5  
Total operating income 56.2 39.1 93.8 65.9  
Environmental Solutions | Continuing Operations          
Segment Reporting Information [Line Items]          
Total assets 1,334.2   1,334.2   1,206.4
Safety and Security Systems          
Segment Reporting Information [Line Items]          
Total net sales 69.4 60.4 136.1 116.4  
Total operating income 14.1 10.3 26.2 18.2  
Safety and Security Systems | Continuing Operations          
Segment Reporting Information [Line Items]          
Total assets 283.6   283.6   279.3
Corporate And Eliminations          
Segment Reporting Information [Line Items]          
Total operating income (10.9) $ (3.2) (21.1) $ (9.4)  
Corporate And Eliminations | Continuing Operations          
Segment Reporting Information [Line Items]          
Total assets $ 42.9   $ 42.9   $ 38.6