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Other, Net (Tables)
 9 Months Ended
Sep. 30, 2016
Other Net [Abstract]  
Other, Net
The components of Other income/(expense), net for the three and nine months ended September 30 are as follows:
 
Three months ended
 
Nine months ended
In millions
2016

2015
 
2016
 
2015
Interest income
$
0.8

 
$
2.5

 
$
5.4

 
$
7.8

Exchange gain (loss)
(3.1
)
 
4.1

 
6.2

 
(28.3
)
Income (loss) from equity investment
—

 
6.5

 
(0.8
)
 
10.7

Gain on sale of Hussmann equity investment
—

 
—

 
397.8

 
—

Other activity, net
4.0

 
(0.9
)
 
6.1

 
17.6

Other income/(expense), net
$
1.7

 
$
12.2

 
$
414.7

 
$
7.8