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REGULATION - REGULATORY FILINGS (Details) (USD $) | 9 Months Ended | 0 Months Ended | 9 Months Ended | 0 Months Ended |  | 9 Months Ended
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Jun. 30, 2014 | Jul. 23, 2014 Subsequent Event [Member] | Jun. 30, 2014 Revolving Credit Facility [Member] | Jun. 30, 2014 Medium-term Notes [Member] | Jun. 30, 2014 BGSS [Member] | Jun. 30, 2014 SBC [Member] | Jun. 30, 2014 NJCEP [Member] | Jul. 23, 2014 NJ RISE Program [Member] Subsequent Event [Member] | Jul. 23, 2014 NJ RISE Program [Member] Subsequent Event [Member] project | Jun. 30, 2014 June 2013 USF Filing [Member] USF [Member] | Jun. 30, 2014 June 2013 BGSS/CIP Filing [Member] CIP [Member] | Jun. 30, 2014 July 2013 SBC Filing [Member] SBC [Member] | Jun. 30, 2014 June 2014 BGSS/CIP Filing [Member] CIP [Member] | Jun. 30, 2014 June 2014 USF Filing [Member] USF [Member]
Schedule of Regulatory [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of increase (decrease) for the average residential heating customer |  |  |  |  | (6.00%) | (0.20%) | 1.90% |  |  | (0.50%) | (1.00%) |  | (4.30%) | 0.40%
Annual recovery amount approved by the Board of Public Utilities |  |  |  |  |  |  |  |  |  |  |  | $ 18,700,000 |  |
Debt term | 3 years | 10 years |  |  |  |  |  |  |  |  |  |  |  |
Maximum issuance amount |  |  |  | 300,000,000 |  |  |  |  |  |  |  |  |  |
Maturity period |  |  |  | 30 years |  |  |  |  |  |  |  |  |  |
Renewal period |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |
Capital investments approved by the Board of Public Utilities |  |  |  |  |  |  |  | $ 102,500,000 |  |  |  |  |  |
Capital investments period |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Number of capital investment projects |  |  |  |  |  |  |  |  | 6 |  |  |  |  |

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- Definition Capital Investments Proposed To The Board Of Public Utilities + References No definition available. + Details
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