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Segment Information (Tables)
3 Months Ended
Mar. 31, 2021
Segment Reporting [Abstract]  
Summary of Net Sales, Operating Income (Loss), and Total Assets by Segment
The following tables summarize the Company’s operations by segment, including Net sales, Operating income (loss), and Total assets:
 Three Months Ended
March 31,
(in millions)20212020
Net sales:
Environmental Solutions$228.1 $233.0 
Safety and Security Systems50.7 53.1 
Total net sales$278.8 $286.1 
Operating income (loss):
Environmental Solutions$27.1 $29.4 
Safety and Security Systems7.2 7.4 
Corporate and eliminations(6.5)(4.5)
Total operating income27.8 32.3 
Interest expense1.1 1.5 
Other (income) expense, net(0.5)0.2 
Income before income taxes$27.2 $30.6 
(in millions)As of
March 31, 2021
As of December 31, 2020
Total assets:
Environmental Solutions$1,013.0 $926.8 
Safety and Security Systems222.0 225.5 
Corporate and eliminations30.9 56.3 
Total assets of continuing operations1,265.9 1,208.6 
Total assets of discontinued operations0.2 0.2 
Total assets$1,266.1 $1,208.8