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Other, Net (Tables)
 3 Months Ended
Mar. 31, 2020
Other Net [Abstract]  
Other, Net
The components of Other income/(expense), net for the three months ended March 31 are as follows:
 
Three months ended
In millions
2020

2019
Interest income/(loss)
$
(0.1
)
 
$
(1.1
)
Exchange gain/(loss)
(4.2
)
 
(4.3
)
Other components of net periodic benefit cost
(1.7
)
 
(9.8
)
Other activity, net 
18.5

 
(2.8
)
Other income/(expense), net
$
12.5

 
$
(18.0
)