COMMON STOCK EQUITY - NARRATIVE (Details) - USD ($) shares in Thousands, $ in Millions |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
Equity [Abstract] | ||||
Equity raised through the DRP waiver discount feature | $ 19.0 | $ 41.7 | ||
Shares issued through the DRP waiver discount feature (in shares) | 460 | 1,014 | ||
Equity raised through the DRP | $ 3.7 | $ 4.1 | $ 13.6 | $ 13.8 |
Number of treasury shares issued from raising of equity through the DRP | 92 | 102 | 334 | 381 |