XML 64 R36.htm IDEA: XBRL DOCUMENT v3.22.2.2
Inventory (Tables)
 9 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Inventory Balance By Type
The following table summarizes the Company’s inventory balances as of the periods indicated (in millions):
September 30, 2022December 31, 2021
Fuel and other raw materials$689 $366 
Spare parts and supplies309 238 
Total$998 $604