XML 17 R90.htm IDEA: XBRL DOCUMENT
v3.20.1

ACQUISITIONS AND DISPOSITIONS - Net Assets Acquired (Details) - USD ($) $ in Thousands |  |  | 1 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Jan. 13, 2020 | Oct. 11, 2019 | Nov. 30, 2017 | Mar. 31, 2020 | Mar. 31, 2019
Business Acquisition [Line Items] |  |  |  |  |
Purchase price |  |  |  | $ 523,647 | $ 0
NJR Pipeline | Leaf River Energy Center LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price |  | $ 367,500 |  |  |
Net working capital adjustment |  | 4,111 |  |  |
Transaction costs |  | 1,664 |  |  |
Total costs capitalized |  | 373,275 |  |  |
Identifiable assets acquired |  |  |  |  |
Property, plant and equipment |  | 365,715 |  |  |
Base gas |  | 3,445 |  |  |
Other assets, net |  | 4 |  |  |
Net working capital |  | 4,111 |  |  |
Net assets acquired |  | $ 373,275 |  |  |
Talen Generation, LLC | Talen's Membership Interests In IEC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price | $ 156,000 |  | $ 10,000 |  |
Talen Generation, LLC | Adelphia | Talen's Membership Interests In IEC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price | 166,000 |  |  |  |
Net working capital adjustment | (449) |  |  |  |
Transaction costs | 9,456 |  |  |  |
Total costs capitalized | 175,007 |  |  |  |
Identifiable assets acquired |  |  |  |  |
Property, plant and equipment | 174,438 |  |  |  |
Other assets, net | 1,018 |  |  |  |
Net working capital | (449) |  |  |  |
Net assets acquired | $ 175,007 |  |  |  |

X
- Definition Asset Acquisition, Assets Acquired and Liabilities Assumed, Net + References No definition available. + Details
Name: | njr_AssetAcquisitionAssetsAcquiredandLiabilitiesAssumedNet
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Consideration Transferred + References No definition available. + Details
Name: | njr_AssetAcquisitionConsiderationTransferred
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Base Gas + References No definition available. + Details
Name: | njr_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedAssetsBaseGas
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Other + References No definition available. + Details
Name: | njr_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedAssetsOther
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Working Capital + References No definition available. + Details
Name: | njr_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNetWorkingCapital
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment + References No definition available. + Details
Name: | njr_AssetAcquisitionRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedPropertyPlantandEquipment
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Transaction Costs + References No definition available. + Details
Name: | njr_AssetAcquisitionTransactionCosts
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Asset Acquisition, Working Capital Adjustment + References No definition available. + Details
Name: | njr_AssetAcquisitionWorkingCapitalAdjustment
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Payments For Asset Acquisitions, Net Of Cash Acquired + References No definition available. + Details
Name: | njr_PaymentsForAssetAcquisitionsNetOfCashAcquired
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_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=njr_LeafRiverEnergyCenterLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=njr_TalenGenerationLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=njr_TalensMembershipInterestsInIECMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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