COMMON STOCK EQUITY - DIVIDEND REINVESTMENT PLAN (Details) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Equity [Abstract]
Equity raised through the DRP	$ 13.1	$ 10.9
Number of treasury shares issued from raising of equity through the DRP	330,000	235,000
Additional equity raised	$ 19.8
Additional shares issued through the waiver discount feature of the DRP	344,000	0