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Other Long-Term Assets Other Long-Term Assets (Tables)
 12 Months Ended
Sep. 30, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Long-Term Assets
The table below summarizes the types and amounts of TVA’s other long-term assets:
Other Long-Term Assets 
At September 30
 
2015
 
2014
EnergyRight® receivables
$
124

 
$
123

Unamortized debt issue cost of power bonds and variable interest entities
80

 
68

Loans and other long-term receivables, net
126

 
87

Commodity contract derivative assets
1

 
—

Prepaid capacity payments
52

 
58

Currency swap assets, net
25

 
—

Restricted cash
—

 
64

Other
75

 
83

Total other long-term assets
$
483

 
$
483