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Other Long-Term Liabilities Other Long-Term Liabilities (Tables)
12 Months Ended
Sep. 30, 2015
Other Liabilities, Noncurrent [Abstract]  
Other Long-Term Liabilities
The table below summarizes the types and amounts of Other long-term liabilities:

Other Long-Term Liabilities
At September 30
 
2015
 
2014
Interest rate swap liabilities
$
1,627

 
$
1,348

EnergyRight® financing obligation
148

 
152

Environmental agreements liability
55

 
108

Currency swap liabilities
47

 
15

Membership interests of VIE subject to mandatory redemption
35

 
37

Commodity contract derivative liabilities
17

 
17

Commodity swap derivative liabilities
10

 
14

Other
280

 
271

Total other long-term liabilities
$
2,219

 
$
1,962