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v3.21.2

Segment Information - Summary of Net Sales, Operating Income (Loss), and Total Assets by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |  |  |
Total net sales | $ 298.3 | $ 279.8 | $ 911.8 | $ 836.0 |
Total operating income | 34.3 | 34.0 | 100.6 | 97.6 |
Interest expense | 1.1 | 1.2 | 3.3 | 4.5 |
Other (income) expense, net | (0.3) | (0.1) | (1.1) | 2.1 |
Income before income taxes | 33.5 | 32.9 | 98.4 | 91.0 |
Total assets | 1,313.8 |  | 1,313.8 |  | $ 1,208.8
Continuing Operations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total assets | 1,313.6 |  | 1,313.6 |  | 1,208.6
Discontinued Operations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total assets | 0.2 |  | 0.2 |  | 0.2
Environmental Solutions |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total net sales | 249.1 | 231.0 | 758.5 | 678.2 |
Total operating income | 30.8 | 33.0 | 96.4 | 91.0 |
Environmental Solutions | Continuing Operations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total assets | 1,015.0 |  | 1,015.0 |  | 926.8
Safety and Security Systems |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total net sales | 49.2 | 48.8 | 153.3 | 157.8 |
Total operating income | 7.6 | 7.4 | 22.6 | 25.2 |
Safety and Security Systems | Continuing Operations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total assets | 220.4 |  | 220.4 |  | 225.5
Corporate And Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating income | (4.1) | $ (6.4) | (18.4) | $ (18.6) |
Corporate And Eliminations | Continuing Operations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total assets | $ 78.2 |  | $ 78.2 |  | $ 56.3

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