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INVENTORIES
3 Months Ended
Mar. 31, 2023
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
 March 31,December 31,
(Dollars in millions)20232022
Finished goods$1,437 $1,347 
Work in process291 297 
Raw materials and supplies709 743 
Total inventories at FIFO or average cost2,437 2,387 
Less: LIFO reserve493 493 
Total inventories$1,944 $1,894 
Inventories valued on the last-in, first-out ("LIFO") method were approximately 50 percent of total inventories at both March 31, 2023 and December 31, 2022.