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INVENTORIES
9 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
 September 30,December 31,
(Dollars in millions)20202019
Finished goods$873 $1,114 
Work in process191 220 
Raw materials and supplies510 576 
Total inventories at FIFO or average cost1,574 1,910 
Less: LIFO reserve236 248 
Total inventories$1,338 $1,662 

Inventories valued on the last-in, first-out ("LIFO") method were approximately 50 percent of total inventories at both September 30, 2020 and December 31, 2019. In third quarter 2020, a $10 million LIFO decrement was recognized due to inventory reduction actions, resulting in an increase to "Cost of sales" in the Unaudited Consolidated Statements of Earnings, Comprehensive Income and Retained Earnings and a decrease to "Inventories" in the Unaudited Consolidated Statements of Financial Position.