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Other, Net (Tables)
 9 Months Ended
Sep. 30, 2013
Other Net [Abstract]  
Other, Net
The components of Other, net for the three and nine months ended September 30 were as follows:
 
Three months ended
 
Nine months ended
In millions
2013

2012
 
2013
 
2012
Interest income
$
3.6

 
$
4.0

 
$
9.6

 
$
12.6

Exchange gain (loss)
(3.4
)
 
(1.3
)
 
(17.1
)
 
(4.1
)
Earnings (loss) from equity investments
1.0

 
1.7

 
(1.6
)
 
(4.3
)
Other
4.8

 
13.0

 
6.4

 
17.0

Other, net
$
6.0

 
$
17.4

 
$
(2.7
)
 
$
21.2