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Property Plant and Equipment (Tables)
12 Months Ended
Sep. 30, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment comprise the following categories at September 30:
 
2013
 
2012
Distribution
$
2,162,580

 
$
2,047,780

Transmission
86,623

 
85,430

General and other, including construction in process
178,607

 
162,459

Total property, plant and equipment
$
2,427,810

 
$
2,295,669