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Inventories, Net
3 Months Ended
Dec. 31, 2011
Inventory Disclosure [Abstract]  
Inventories, Net
Inventories, Net

The table below summarizes the types and amounts of TVA’s inventories:

Inventories, Net 
 
At December 31, 2011
 
At September 30, 2011
Fuel inventory
$
614

 
$
489

Materials and supplies inventory
581

 
555

Emission allowance inventory
11

 
11

Allowance for inventory obsolescence
(29
)
 
(27
)
Inventories, net
$
1,177

 
$
1,028