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Other, Net (Tables)
 9 Months Ended
Sep. 30, 2012
Other Income and Expenses [Abstract]  
Other, net (income) expense
Other, net (income) expense consists of the following items:
 
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
 
2012
 
2011
 
2012
 
2011
 
 
(in millions)
Foreign currency exchange transactions
 
$
(0.4
)
 
$
3.0

 
$
(1.8
)
 
$
3.1

Gain on equity investments
 
(0.2
)
 
(0.1
)
 
(0.3
)
 
(0.6
)
Other
 
(0.8
)
 
2.4

 
(2.3
)
 
1.7

Other, net
 
$
(1.4
)
 
$
5.3

 
$
(4.4
)
 
$
4.2