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INVENTORIES (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of inventories
 March 31,December 31,
(Dollars in millions)20212020
Finished goods$944 $891 
Work in process214 203 
Raw materials and supplies586 511 
Total inventories at FIFO or average cost1,744 1,605 
Less: LIFO reserve239 226 
Total inventories$1,505 $1,379