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INVENTORIES (Tables)
9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of inventories
 September 30,December 31,
(Dollars in millions)20212020
Finished goods$1,046 $891 
Work in process258 203 
Raw materials and supplies644 511 
Total inventories at FIFO or average cost1,948 1,605 
Less: LIFO reserve318 226 
Total inventories$1,630 $1,379