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Inventories
 3 Months Ended
Mar. 31, 2024
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories as of March 31, 2024 and December 31, 2023 were as follows:

In millionsMarch 31, 2024December 31, 2023
Raw material$719 $742 
Work-in-process236 234 
Finished goods870 848 
LIFO reserve— (117)
Total inventories$1,825 $1,707 

During the first quarter of 2024, the Company changed the method used to determine the cost of inventory at certain U.S. businesses from LIFO to the FIFO method, as the Company believes the FIFO method is preferable because it provides a more consistent method for valuing inventory across the Company’s operations, improves comparability with peers, and better reflects the current value of inventories at the balance sheet date. Refer to Note 1. Significant Accounting Policies for additional information regarding this change in accounting method.