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DERIVATIVE INSTRUMENTS - VOLUME (Details) MWh in Thousands, $ in Millions | Mar. 31, 2016 USD ($) Bcf MWh | Sep. 30, 2015 USD ($) Bcf | Jun. 01, 2015 USD ($)
--- | --- | --- | ---
Derivative [Line Items] |  |  |  |
Notional amount | $ |  |  |  | $ 125
NJNG [Member] | Treasury Lock [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Notional amount | $ |  | $ 125 | $ 125 |
NJNG [Member] | Long [Member] | Futures [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Volume | [1] | 15.2 | 25.8 |
NJNG [Member] | Long [Member] | Physical [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Volume |  | 5.9 | 0.0 |
NJRES [Member] | SREC [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Volume | MWh | [2] | 48 |  |
NJRES [Member] | Long [Member] | Physical [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Volume | [2] | 137.4 | 48.2 |
NJRES [Member] | Long [Member] | Options [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Volume |  | 3.6 | 1.2 |
NJRES [Member] | Short [Member] | Futures [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Volume |  | 88.6 | 91.1 |
[1] | Not included is the notional amount of $125 million related to NJNG’s treasury lock agreement.
[2] | Not included are 48,000 SRECs that are open as of March 31, 2016.

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