XML 100 R84.htm IDEA: XBRL DOCUMENT
v3.21.2

DEBT - SALE-LEASEBACKS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018
Debt Instrument [Line Items] |  |  |
Proceeds from sale-leaseback transaction | $ 4,000 | $ 9,895 | $ 7,820
NJNG |  |  |
Debt Instrument [Line Items] |  |  |
Sale leaseback transaction, lease term | 16 years |  |
Proceeds from sale leaseback transaction - natural gas meters | $ 4,000 |  |
Proceeds from sale-leaseback transaction |  | 9,900 | 7,800
Sale leaseback transaction, other payments required | $ 1,200 | $ 1,100 |
Sale leaseback transaction, other payments required |  |  | $ 2,200

X
- Definition Lessee Leasing Arrangements, Capital Leases, Term of Contract + References No definition available. + Details
Name: | njr_LesseeLeasingArrangementsCapitalLeasesTermofContract
Namespace Prefix: | njr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net Proceeds from Sale Leaseback Transaction, Financing Activities + References No definition available. + Details
Name: | njr_NetProceedsfromSaleLeasebackTransactionFinancingActivities
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sale Leaseback Transaction, Final Principal Payments + References No definition available. + Details
Name: | njr_SaleLeasebackTransactionFinalPrincipalPayments
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow after closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=121602674&loc=d3e51843-112757 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=121602674&loc=d3e51831-112757 Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 51 -URI http://asc.fasb.org/extlink&oid=121602674&loc=d3e51840-112757 + Details
Name: | us-gaap_SaleLeasebackTransactionNetProceedsFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Other amounts the seller-lessee is required to pay under the terms of the transaction involving the sale of property to another party and lease of the property back to the seller, including reimbursements for such items, as utilities, taxes, insurance and common area maintenance. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121549808&loc=d3e36991-112694 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121586228&loc=d3e50796-112755 + Details
Name: | us-gaap_SaleLeasebackTransactionOtherPaymentsRequired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=njr_NjngMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |