XML 53 R12.htm IDEA: XBRL DOCUMENT v3.24.0.1
Inventory
12 Months Ended
Dec. 31, 2023
Inventory Disclosure [Abstract]  
INVENTORY INVENTORY
Inventory is valued primarily using the average-cost method. The following table summarizes the Company's inventory balances as of the dates indicated (in millions):
December 31,20232022
Fuel and other raw materials$424 $733 
Spare parts and supplies288 322 
Total$712 $1,055