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Discontinued Operations (Tables)
 12 Months Ended
Dec. 31, 2019
Discontinued Operations and Disposal Groups [Abstract]  
Summarized Financial Information of Discontinued Operations
The following table represents income from discontinued operations, net of tax:
 
Year Ended December 31,
 
2018
 
2017
Sales
$
157.0

 
$
145.9

Cost of sales
115.8

 
105.4

Selling, general and administrative expenses
32.7

 
34.2

Amortization expense
2.3

 
2.8

Operating income (1)
6.2

 
3.5

Interest expense, net
3.2

 
2.1

Other expense (income), net
0.1

 
(1.1
)
Income before income taxes
2.9

 
2.5

Income tax expense
2.8

 
0.7

Income from discontinued operations before gain on sale of business
0.1

 
1.8

Gain on sale of business, net of taxes of $2.6
34.3

 
—

Income from discontinued operations, net of tax
$
34.4

 
$
1.8

_______________
(1) 
Includes depreciation expense of $1.7 and $1.6 for the years ended December 31, 2018 and 2017, respectively.