DEBT - SCHEDULE OF LONG TERM DEBT (Details) (USD $)
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6 Months Ended |
0 Months Ended |
1 Months Ended |
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Mar. 31, 2015
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Mar. 31, 2014
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Sep. 26, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Apr. 15, 2015
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Mar. 13, 2014
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Debt Instrument [Line Items] |
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Proceeds from sale-leaseback transaction |
$ 7,216,000us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities |
$ 7,576,000us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities |
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NJR [Member] | Debt Shelf Facility Prudential [Member] | Unsecured Senior Note 3.25% [Member] |
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Debt Instrument [Line Items] |
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Amount issued and outstanding |
50,000,000us-gaap_LineOfCredit / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityPrudentialMember / us-gaap_LongtermDebtTypeAxis = njr_UnsecuredSeniorNote325Member |
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Interest rate, stated percentage |
3.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityPrudentialMember / us-gaap_LongtermDebtTypeAxis = njr_UnsecuredSeniorNote325Member |
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NJR [Member] | Debt Shelf Facility Prudential [Member] | Unsecured Senior Note 3.48% [Member] |
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Debt Instrument [Line Items] |
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Interest rate, stated percentage |
3.48%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityPrudentialMember / us-gaap_LongtermDebtTypeAxis = njr_Unsecuredseniornote3.48Member |
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Debt issued |
100,000,000us-gaap_LongTermDebt / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityPrudentialMember / us-gaap_LongtermDebtTypeAxis = njr_Unsecuredseniornote3.48Member |
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NJR [Member] | Debt Shelf Facility Metlife 2 [Member] |
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Debt Instrument [Line Items] |
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Line of credit facility, maximum borrowing capacity |
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100,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityMetlife2Member |
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Line of credit facility, issuance period |
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3 years |
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Line of credit facility, remaining borrowing capacity |
100,000,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityMetlife2Member |
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NJR [Member] | Debt Shelf Facility Metlife [Member] | Unsecured Senior Note 1.94% [Member] |
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Debt Instrument [Line Items] |
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Amount issued and outstanding |
25,000,000us-gaap_LineOfCredit / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityMetlifeMember / us-gaap_LongtermDebtTypeAxis = njr_UnsecuredSeniorNote194Member |
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Interest rate, stated percentage |
1.94%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityMetlifeMember / us-gaap_LongtermDebtTypeAxis = njr_UnsecuredSeniorNote194Member |
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Number of debt instruments outstanding |
2njr_NumberofDebtInstruments / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityMetlifeMember / us-gaap_LongtermDebtTypeAxis = njr_UnsecuredSeniorNote194Member |
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NJR [Member] | Debt Shelf Facility Metlife [Member] | Unsecured Senior Note 2.51% [Member] |
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Debt Instrument [Line Items] |
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Amount issued and outstanding |
25,000,000us-gaap_LineOfCredit / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityMetlifeMember / us-gaap_LongtermDebtTypeAxis = njr_UnsecuredSeniorNote251Member |
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Interest rate, stated percentage |
2.51%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = njr_NjrMember / us-gaap_LineOfCreditFacilityAxis = njr_DebtShelfFacilityMetlifeMember / us-gaap_LongtermDebtTypeAxis = njr_UnsecuredSeniorNote251Member |
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NJNG [Member] |
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Debt Instrument [Line Items] |
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Proceeds from sale-leaseback transaction |
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7,200,000us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities / dei_LegalEntityAxis = njr_NjngMember |
7,600,000us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities / dei_LegalEntityAxis = njr_NjngMember |
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NJNG [Member] | First Mortgage [Member] | 2.82% Senior Notes [Member] | Subsequent Event [Member] |
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Debt Instrument [Line Items] |
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Interest rate, stated percentage |
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2.82%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = njr_TwoPointEightyTwoPercentSeniorNotesMember / dei_LegalEntityAxis = njr_NjngMember / us-gaap_LongtermDebtTypeAxis = us-gaap_FirstMortgageMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
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Debt issued |
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50,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = njr_TwoPointEightyTwoPercentSeniorNotesMember / dei_LegalEntityAxis = njr_NjngMember / us-gaap_LongtermDebtTypeAxis = us-gaap_FirstMortgageMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
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NJNG [Member] | First Mortgage [Member] | 3.66% Senior Notes [Member] | Subsequent Event [Member] |
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Debt Instrument [Line Items] |
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Interest rate, stated percentage |
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3.66%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = njr_ThreePointSixtySixPercentSeniorNotesMember / dei_LegalEntityAxis = njr_NjngMember / us-gaap_LongtermDebtTypeAxis = us-gaap_FirstMortgageMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
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Debt issued |
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100,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = njr_ThreePointSixtySixPercentSeniorNotesMember / dei_LegalEntityAxis = njr_NjngMember / us-gaap_LongtermDebtTypeAxis = us-gaap_FirstMortgageMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
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NJNG [Member] | First Mortgage [Member] | 3.58% Senior Notes [Member] |
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Debt Instrument [Line Items] |
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Interest rate, stated percentage |
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3.58%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = njr_ThreePointFiftyEightPercentSeniorNotesMember / dei_LegalEntityAxis = njr_NjngMember / us-gaap_LongtermDebtTypeAxis = us-gaap_FirstMortgageMember |
Debt issued |
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70,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = njr_ThreePointFiftyEightPercentSeniorNotesMember / dei_LegalEntityAxis = njr_NjngMember / us-gaap_LongtermDebtTypeAxis = us-gaap_FirstMortgageMember |
NJNG [Member] | First Mortgage [Member] | 4.61% Senior Notes [Member] |
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Debt Instrument [Line Items] |
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Interest rate, stated percentage |
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4.61%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = njr_FourPointSixtyOnePercentSeniorNotesMember / dei_LegalEntityAxis = njr_NjngMember / us-gaap_LongtermDebtTypeAxis = us-gaap_FirstMortgageMember |
Debt issued |
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$ 55,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = njr_FourPointSixtyOnePercentSeniorNotesMember / dei_LegalEntityAxis = njr_NjngMember / us-gaap_LongtermDebtTypeAxis = us-gaap_FirstMortgageMember |