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STOCK-BASED COMPENSATION (Tables)
 6 Months Ended
Jun. 30, 2019
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
2019
 
2018
 
2019
 
2018
Total stock-based compensation expense (selling and administrative)
$
36

 
$
36

 
$
63

 
$
67

Income tax benefits related to stock-based compensation
(1
)
 
—

 
33

 
22