XML 85 R65.htm IDEA: XBRL DOCUMENT
v3.22.2.2

DERIVATIVE INSTRUMENTS - INCOME STATEMENT RELATED DISCLOSURES (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of gain (loss) recognized in income on derivatives | $ 9,400 | $ (12,696) | $ 56,705
Energy Services | Physical commodity contracts | Operating revenues |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Nonutility | Nonutility | Nonutility
Amount of gain (loss) recognized in income on derivatives | $ (8,569) | $ 30,011 | $ 1,163
Energy Services | Physical commodity contracts | Natural gas purchases |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Gas purchases - Utility and Nonutility | Gas purchases - Utility and Nonutility | Gas purchases - Utility and Nonutility
Amount of gain (loss) recognized in income on derivatives | $ 3,580 | $ 1,052 | $ (3,366)
Energy Services | Financial commodity contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of gain (loss) recognized in income on derivatives | 14,403 | (43,997) | 58,949
Energy Services | Foreign currency contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of gain (loss) recognized in income on derivatives | (14) | 238 | (41)
Natural Gas Distribution |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of gain (loss) recognized in income on derivatives | 39,984 | 34,899 | (1,826)
Natural Gas Distribution | Physical commodity contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of gain (loss) recognized in income on derivatives | 7,116 | 2,174 | 2,077
Natural Gas Distribution | Financial commodity contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of gain (loss) recognized in income on derivatives | $ 32,868 | $ 32,725 | $ (3,903)

X
- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
Name: | us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
Name: | us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
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_DerivativeInstrumentsGainLossLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=njr_EnergyServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_EnergyRelatedDerivativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=njr_NaturalGasPurchasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=njr_NaturalGasDistributionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |