XML 42 R22.htm IDEA: XBRL DOCUMENT v3.25.0.1
Inventories
 12 Months Ended
Dec. 31, 2024
Inventory Disclosure [Abstract]  
Inventories Inventories
December 31,20242023
Finished goods$458 $451 
Work-in-process903 891 
Purchased raw materials408 355 
Operating supplies71 68 
Total inventories$1,840 $1,765 
As of December 31, 2024 and 2023, the portion of inventories valued on a LIFO basis was $544 and $446, respectively. If valued on an average-cost basis, total inventories would have been $280 and $236 higher as of December 31, 2024 and 2023, respectively. In 2024, we did not have any LIFO inventory layer liquidations. Reductions in LIFO inventory quantities caused partial liquidations of LIFO inventory layers resulting in the recognition of a benefit of $1 in 2023 and recognition of expense of less than $1 in 2022.