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v3.3.1.900

NATURE OF THE BUSINESS (Details) shares in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2015 subsidiary customer | Sep. 29, 2015 shares
Common Units [Member] |  |
Nature of Business [Line Items] |  |
Ownership interest exchanged (in shares) | shares |  | 1,840
Steckman Ridge [Member] |  |
Nature of Business [Line Items] |  |
Equity method investment, ownership percentage | 50.00% |
PennEast [Member] |  |
Nature of Business [Line Items] |  |
Equity method investment, ownership percentage | 20.00% |
NJNG [Member] |  |
Nature of Business [Line Items] |  |
Total retail customers | customer | 516,300 |
NJR Retail Holdings Corporation [Member] |  |
Nature of Business [Line Items] |  |
Number of principal subsidiaries | subsidiary | 2 |

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