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Other Long-Term Liabilities (Tables)
6 Months Ended
Mar. 31, 2016
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 March 31, 2016
 
At September 30, 2015
Interest rate swap liabilities
$
1,800

 
$
1,627

EnergyRight® financing obligation
141

 
148

Environmental agreements liability
32

 
55

Currency swap liabilities
77

 
47

Membership interests of VIE subject to mandatory redemption
34

 
35

Commodity contract derivative liabilities
76

 
17

Commodity swap derivative liabilities
7

 
10

Other
280

 
280

Total other long-term liabilities
$
2,447

 
$
2,219