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INVENTORIES (Tables)
 12 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Schedule of Inventory
The following table provides a breakdown of inventories:
 
Inventories at Dec 31
 
 
In millions
2018
2017
Finished goods
$
5,640

$
5,213

Work in process
2,214

1,747

Raw materials
941

898

Supplies
880

848

Total
$
9,675

$
8,706

Adjustment of inventories to a LIFO basis
(415
)
(330
)
Total inventories
$
9,260

$
8,376