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Inventories
12 Months Ended
Dec. 31, 2024
Inventory Disclosure [Abstract]  
Inventories Inventories
 
Inventories (principally using the LIFO method) are comprised of the following:
 
 December 31,
(Millions of dollars)20242023
Raw materials$6,681 $6,492 
Work-in-process1,438 1,411 
Finished goods8,329 8,308 
Supplies379 354 
Total inventories$16,827 $16,565