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STOCK-BASED COMPENSATION (Tables)
 9 Months Ended
Sep. 30, 2019
Share-based Payment Arrangement [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
September 30,
 
Nine Months Ended
September 30,
In millions
2019
 
2018
 
2019
 
2018
Total stock-based compensation expense (selling and administrative)
$
31

 
$
35

 
$
94

 
$
102

Income tax benefits related to stock-based compensation
(2
)
 
(6
)
 
31

 
16