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STOCK-BASED COMPENSATION (Tables)
 6 Months Ended
Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Stock-Based Compensation Expense Related to Income Tax Benefits [Table Text Block]
Stock-based compensation expense and related income tax benefits were as follows: 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
In millions
2018
 
2017
 
2018
 
2017
Total stock-based compensation expense (selling and administrative)
$
36

 
$
37

 
$
67

 
$
79

Income tax benefits related to stock-based compensation
—

 
(3
)
 
22

 
45