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Other Income (Tables)
 12 Months Ended
Dec. 31, 2018
Other Income, Nonoperating [Abstract]  
Other income
In millions
Year ended December 31,
2018

 
2017

 
2016

Gain on disposal of property
 
$
338

 
$
—

 
$
76

Gain on disposal of land
 
27

 
22

 
17

Other (1)
 
11

 
(10
)
 
2

Total other income
 
$
376

 
$
12

 
$
95

(1)
Includes foreign exchange gains and losses related to foreign exchange forward contracts and the re-measurement of foreign currency denominated monetary assets and liabilities. See Note 18 – Financial instruments for additional information.