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Reorganization and Business Transformation (Tables)
12 Months Ended
Dec. 31, 2018
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs
:
In millions
 
2018
 
2017
 
2016
Employee severance and other employee related cost
 
$

 
$
2

 
$
14

Asset write-downs
 

 

 
80

Professional services, legal and other associated cost
 

 
24

 
35

Employee severance and other employee-related costs related to headquarter transition and business transformation
 
14

 

 

Transition support and other exit related costs for the headquarter transition and business transformation
 
9

 

 

Total reorganization and business transformation cost
 
$
23

 
$
26

 
$
129