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Other Long-Term Liabilities (Tables)
3 Months Ended
Dec. 31, 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 December 31, 2015
 
At September 30, 2015
Interest rate swap liabilities
$
1,538

 
$
1,627

EnergyRight® financing obligation
146

 
148

Environmental agreements liability
41

 
55

Currency swap liabilities
58

 
47

Membership interests of VIE subject to mandatory redemption
35

 
35

Commodity contract derivative liabilities
46

 
17

Commodity swap derivative liabilities
9

 
10

Other
276

 
280

Total other long-term liabilities
$
2,149

 
$
2,219