XML 51 R65.htm IDEA: XBRL DOCUMENT
v2.4.1.9

RELATED PARTY TRANSACTIONS (Details) (USD $) | 6 Months Ended | 0 Months Ended | 3 Months Ended
--- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Apr. 01, 2010 | Sep. 30, 2014 Bcf
Related Party Transaction [Line Items] |  |  |  |
Number of asset management agreements | 3njr_NumberofAssetManagementAgreements |  |  |
NJRES to Steckman RIdge and Iroquios Affliates [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Demand fees expense recognized pertaining to related party agreement | $ 3,200,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjresToSteckmanRidgeAndIroquiosAffliatesMember | $ 1,500,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjresToSteckmanRidgeAndIroquiosAffliatesMember |  |
NJRES to Steckman Ridge Affiliate |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due to related parties | 280,000us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjresToSteckmanRidgeAfffiliateMember |  |  | 187,000us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjresToSteckmanRidgeAfffiliateMember
NJRES to Iroquois Affiliate [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due to related parties | 513,000us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjresToIroquoisAffiliateMember |  |  | 389,000us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjresToIroquoisAffiliateMember
NJNG to Steckman RIdge Affiliate |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party agreement term |  |  | 10 years |
Agreement for natural gas storage capacity between NJNG and affiliate (Bcf) | 3njr_AgreementforNaturalGasStorageCapacityBetweenNJNGandAffiliate / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjngToSteckmanRidgeAffiliateMember |  |  |
Approximate annual demand fees under agreement from April 1 2010 to March 31 2020 |  |  | 9,300,000njr_ProjectedAnnualDemandFeesUnderRelatedPartyAgreement / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjngToSteckmanRidgeAffiliateMember |
NJNG to Steckman RIdge and Iroquios Affiliates [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Demand fees expense recognized pertaining to related party agreement | 3,200,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjngToSteckmanRidgeAndIroquiosAffiliatesMember | 4,800,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjngToSteckmanRidgeAndIroquiosAffiliatesMember |  |
Due to related parties | $ 768,000us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjngToSteckmanRidgeAndIroquiosAffiliatesMember |  |  | 823,000us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NjngToSteckmanRidgeAndIroquiosAffiliatesMember
NJNG to PennEast Affiliate [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Natural Gas Transportation Capacity under Precedent Agreement from NJNG with PennEast, period |  |  |  | 15 years
Natural Gas Transportation Capacity under Precedent Agreement from NJNG with PennEast |  |  |  | 0.18njr_NaturalGasTransportationCapacityUnderPrecedentAgreementfromNJNGWithPennEast / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = njr_NJNGtoPennEastAffiliateMember

X
- Definition Agreement for Natural Gas Storage Capacity Between NJNG and Affiliate + References No definition available. + Details
Name: | njr_AgreementforNaturalGasStorageCapacityBetweenNJNGandAffiliate
Namespace Prefix: | njr_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Natural Gas Transportation Capacity Under Precedent Agreement from NJNG With PennEast + References No definition available. + Details
Name: | njr_NaturalGasTransportationCapacityUnderPrecedentAgreementfromNJNGWithPennEast
Namespace Prefix: | njr_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Natural Gas Transportation Capacity Under Precedent Agreement, Period + References No definition available. + Details
Name: | njr_NaturalGasTransportationCapacityUnderPrecedentAgreementPeriod
Namespace Prefix: | njr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Asset Management Agreements + References No definition available. + Details
Name: | njr_NumberofAssetManagementAgreements
Namespace Prefix: | njr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Annual Projected Demand Fees based upon a related party agreement between various NJR Subsidiaries + References No definition available. + Details
Name: | njr_ProjectedAnnualDemandFeesUnderRelatedPartyAgreement
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Related Party Agreement Term specific to an agreement between varaious NJR Subsidiaries. + References No definition available. + Details
Name: | njr_RelatedPartyAgreementTerm
Namespace Prefix: | njr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DueToRelatedPartiesCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=njr_NJNGtoPennEastAffiliateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=njr_NjngToSteckmanRidgeAffiliateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=njr_NjngToSteckmanRidgeAndIroquiosAffiliatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=njr_NjresToIroquoisAffiliateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=njr_NjresToSteckmanRidgeAfffiliateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=njr_NjresToSteckmanRidgeAndIroquiosAffliatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |