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COMMON STOCK EQUITY - NARRATIVE (Details) - USD ($) shares in Thousands, $ in Millions | 3 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Equity [Abstract] |  |
Equity raised through the DRP waiver discount feature | $ 8.0 | $ 22.7
Shares issued through the DRP waiver discount feature (in shares) | 168 | 554
Equity raised through the DRP | $ 3.7 | $ 3.8
Number of treasury shares issued from raising of equity through the DRP | 82 | 90

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- Definition Proceeds From Issuance Of Common Stock, Dividend Reinvestment Plan Waiver Discount Feature + References No definition available. + Details
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- Definition Number of shares issued during the period from a DRP waiver discount feature. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of cash inflow from capital contributions to an entity associated with a dividend reinvestment plan. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
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- Definition Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 + Details
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