COMMON STOCK EQUITY - COMMON STOCK EQUITY NARRATIVE (Details) - USD ($) $ in Millions		9 Months Ended
	Dec. 14, 2015	Jun. 30, 2016	Jun. 30, 2015
Equity [Abstract]
Number of treasury shares issued from raising of equity through the DRP	5,000,000	368,000	457,000
Equity raised through the DRP		$ 12.2	$ 13.1
Additional equity raised			$ 19.8
Additional shares issued through the waiver discount feature of the DRP		0	688,000