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RELATED PARTY TRANSACTIONS (Details) (USD $) | 3 Months Ended |  |  |  |  | 3 Months Ended | 39 Months Ended |  | 3 Months Ended |  |  | 3 Months Ended
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Dec. 31, 2013 NJRES to Steckman RIdge and Iroquios Affliates [Member] | Dec. 31, 2012 NJRES to Steckman RIdge and Iroquios Affliates [Member] | Dec. 31, 2013 NJRES to Steckman Ridge Affiliate | Sep. 30, 2013 NJRES to Steckman Ridge Affiliate | Dec. 31, 2013 NJRES to Iroquois Affiliate [Member] | Sep. 30, 2013 NJRES to Iroquois Affiliate [Member] | Dec. 31, 2013 NJNG to Steckman RIdge Affiliate MMcf | Jun. 30, 2013 NJNG to Steckman RIdge Affiliate | Sep. 30, 2013 NJNG to Steckman RIdge Affiliate | Dec. 31, 2013 NJNG to Steckman RIdge and Iroquios Affiliates [Member] | Dec. 31, 2012 NJNG to Steckman RIdge and Iroquios Affiliates [Member] | Dec. 31, 2013 NJNG to Iroquois Affiliate [Member] | Sep. 30, 2013 NJNG to Iroquois Affiliate [Member] | Dec. 31, 2013 NJNG to NJRES Affiliate [Member] MMcf
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Demand fees expense recognized pertaining to related party agreement | $ 1,600,000 | $ 1,600,000 |  |  |  |  |  |  |  | $ 1,700,000 | $ 1,400,000 |  |  |
Due to related parties |  |  | 143,000 | 159,000 | 392,000 | 390,000 | 776,000 |  | 775,000 |  |  | 61,000 | 61,000 |
Related party agreement term |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |
Agreement for natural gas storage capacity between NJNG and affiliate (MMcf) |  |  |  |  |  |  | 3,000 |  |  |  |  |  |  |
Approximate annual demand fees under agreement from April 1 2010 to March 31 2020 |  |  |  |  |  |  | $ 9,300,000 |  |  |  |  |  |  |
Natural gas sold at cost under asset management agreement (MMcf) |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000

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- Definition Agreement for Natural Gas Storage Capacity Between NJNG and NJR subsidaries + References No definition available. + Details
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- Definition Agreement between subsidiaries as a result of gas storage sold under asset management agreement + References No definition available. + Details
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- Definition Annual Projected Demand Fees based upon a related party agreement between various NJR Subsidiaries + References No definition available. + Details
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- Definition Related Party Agreement Term specific to an agreement between varaious NJR Subsidiaries. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of obligations due all related parties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Subparagraph 1 -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.17) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 7 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(3),(4)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 3, 4 -Article 9 + Details
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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Details
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