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Other, Net (Tables)
 12 Months Ended
Dec. 31, 2016
Other Income and Expenses [Abstract]  
Summary of other, net (income) expense
Other, net (income) expense consists of the following items:
 
Year Ended December 31,
 
2016
 
2015
 
2014
 
(in millions)
Foreign currency exchange transactions
$
2.4

 
$
(2.1
)
 
$
(1.2
)
(Gain) loss on equity investments
(0.1
)
 
0.1

 
(0.8
)
Other
(3.4
)
 
(3.6
)
 
(2.6
)
Other, net
$
(1.1
)
 
$
(5.6
)
 
$
(4.6
)