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INVENTORIES
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
 December 31,
(Dollars in millions)20202019
  
Finished goods$891 $1,114 
Work in process203 220 
Raw materials and supplies511 576 
Total inventories at FIFO or average cost1,605 1,910 
Less: LIFO reserve226 248 
Total inventories$1,379 $1,662 

Inventories valued on the LIFO method were approximately 50 percent of total inventories at both December 31, 2020 and December 31, 2019. In 2020, a $13 million LIFO decrement was recognized due to inventory reduction actions, resulting in an increase to "Cost of sales" in the Consolidated Statements of Earnings, Comprehensive Income and Retained Earnings and a decrease to "Inventories" in the Consolidated Statements of Financial Position.