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Restructuring Expenses (Tables)
3 Months Ended
Mar. 31, 2018
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Reserve by Type of Cost
Restructuring expenses activity during the three months ended March 31, 2018 is summarized as follows (in millions):
 
 
Employee Severance
Balance as of December 31, 2017
 
$
10.9

First quarter 2018 provision
 
5.9

First quarter 2018 cash activity
 
(3.7
)
Foreign currency translation
 
0.1

Balance as of March 31, 2018
 
$
13.2