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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, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Segment Reporting Information [Line Items]          
Total net sales $ 490.4 $ 442.4 $ 915.3 $ 827.9  
Operating Income (Loss) 81.1 59.4 135.4 98.9  
Interest expense, net 3.2 5.6 6.4 10.3  
Other expense, net 0.4 1.1 0.6 1.2  
Income before income taxes 77.5 52.7 128.4 87.4  
Total assets 1,691.5   1,691.5   $ 1,620.5
Environmental Solutions          
Segment Reporting Information [Line Items]          
Total net sales 408.8 373.0 762.8 691.8  
Operating Income (Loss) 72.9 56.2 124.6 93.8  
Environmental Solutions | Continuing Operations          
Segment Reporting Information [Line Items]          
Total assets 1,361.1   1,361.1   1,290.9
Safety and Security Systems          
Segment Reporting Information [Line Items]          
Total net sales 81.6 69.4 152.5 136.1  
Operating Income (Loss) 18.3 14.1 32.1 26.2  
Safety and Security Systems | Continuing Operations          
Segment Reporting Information [Line Items]          
Total assets 288.5   288.5   288.1
Corporate And Eliminations          
Segment Reporting Information [Line Items]          
Operating Income (Loss) (10.1) $ (10.9) (21.3) $ (21.1)  
Corporate And Eliminations | Continuing Operations          
Segment Reporting Information [Line Items]          
Total assets $ 41.9   $ 41.9   $ 41.5