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Inventories
12 Months Ended
Dec. 31, 2024
Inventory Disclosure [Abstract]  
Inventories Inventories
We classify our inventory into the following categories: (i) aftermarket and refurbished products, (ii) salvage and remanufactured products, and (iii) manufactured products. Aftermarket and refurbished products and salvage and remanufactured products are primarily composed of finished goods. Manufactured products are primarily composed of raw materials and finished goods.

Inventories consist of the following (in millions):
December 31,
20242023
Aftermarket and refurbished products$2,659 $2,556 
Salvage and remanufactured products507 510 
Manufactured products54 55 
Total inventories $3,220 $3,121