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Inventories, Net (Text Block)
6 Months Ended
Mar. 31, 2023
Inventory, Net [Abstract]  
Inventories, Net Inventories, Net
The table below summarizes the types and amounts of TVA's inventories:
Inventories, Net
(in millions)
 At March 31, 2023At September 30, 2022
Materials and supplies inventory$811 $808 
Fuel inventory414 303 
Renewable energy certificates/emissions allowance inventory, net19 18 
Allowance for inventory obsolescence(64)(57)
Inventories, net$1,180 $1,072