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Inventories
 12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories
10. Inventories

(In millions)December 31, 2021December 31, 2020
Raw materials$713 $416 
Semi-finished products1,056 633 
Finished products388 300 
Supplies and sundry items53 53 
Total$2,210 $1,402 
Current acquisition costs were estimated to exceed the above inventory values at December 31 by $896 million in 2021 and $848 million in 2020. As a result of the liquidation of LIFO inventories, cost of sales decreased and earnings before interest and income taxes increased by $11 million, $5 million and $28 million in 2021, 2020 and 2019, respectively.