XML 62 R49.htm IDEA: XBRL DOCUMENT
v3.22.2

REGULATION - REGULATORY FILINGS (Details) - USD ($) $ in Thousands |  |  |  |  |  |  |  |  | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 13, 2022 | Jun. 27, 2022 | Jun. 01, 2022 | Apr. 22, 2022 | Mar. 23, 2022 | Jan. 26, 2022 | Nov. 19, 2021 | Nov. 17, 2021 | Jun. 30, 2022 | Sep. 30, 2021
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Other noncurrent regulatory assets |  |  |  |  |  |  |  |  | $ 529,556 | $ 522,099
NJNG |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Other noncurrent regulatory assets |  |  |  |  |  |  |  |  | $ 8,900 |
NJNG | Subsequent Event |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Approved rate increase (decrease), amount | $ 28,900 |  |  |  |  |  |  |  |  |
Base Rate Stipulation |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Weighted average cost of capital |  |  |  |  |  |  |  |  | 6.84% |
Approved return on equity |  |  |  |  |  |  |  |  | 9.60% |
Approved equity capital structure, percentage |  |  |  |  |  |  |  |  | 54.00% |
Public utilities, approved depreciation rate, percentage |  |  |  |  |  |  |  |  | 2.78% |
BPU | NJNG |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  |  |  |  |  |  | $ 79,000 |  |
BPU | NJNG |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Investment |  |  |  | $ 500,000 |  |  |  |  |  |
Program term |  |  |  | 3 years |  |  |  |  |  |
SAFE II and NJ RISE |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Approved rate increase (decrease), amount |  |  |  |  |  |  |  |  | $ 269 |
BGSS | NJNG |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  | $ 81,900 |  |  |  |  | 2,900 |  |
BGSS | NJNG |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  |  |  |  |  | $ 24,200 |  |  |
BGSS Balancing | NJNG |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  | 9,000 |  |  |  |  | 13,000 |  |
Conservation Incentive Program | NJNG |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  | 13,700 |  |  |  |  | $ (6,300) |  |
SAVEGREEN |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Annual recovery increase |  |  | $ 500 |  |  | $ 2,200 |  |  |  |
RAC |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Approved rate increase (decrease), amount |  |  |  |  | $ 600 |  |  |  |  |
NJCEP |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Approved rate increase (decrease), amount |  |  |  |  | $ (2,900) |  |  |  |  |
USF | NJNG |  |  |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  | $ (2,400) |  |  |  |  |  |  |  |

X
- Definition Capital Investments Approved By The Board Of Public Utilities, Annual Recovery Increase (Decrease), Amount + References No definition available. + Details
Name: | njr_CapitalInvestmentsApprovedByTheBoardOfPublicUtilitiesAnnualRecoveryIncreaseDecreaseAmount
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Public Utilities, Approved Depreciation Rate, Percentage + References No definition available. + Details
Name: | njr_PublicUtilitiesApprovedDepreciationRatePercentage
Namespace Prefix: | njr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Public Utilities, Investments + References No definition available. + Details
Name: | njr_PublicUtilitiesInvestments
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Public Utilities, Weighted Average Cost Of Capital, Percentage + References No definition available. + Details
Name: | njr_PublicUtilitiesWeightedAverageCostOfCapitalPercentage
Namespace Prefix: | njr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Public Utility, Program Term + References No definition available. + Details
Name: | njr_PublicUtilityProgramTerm
Namespace Prefix: | njr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Regulatory Filings [Line Items] + References No definition available. + Details
Name: | njr_ScheduleOfRegulatoryFilingsLineItems
Namespace Prefix: | njr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of public utility's approved equity to capital, including debt and equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedEquityCapitalStructurePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of public utility's approved rate increase (decrease) by regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of public utility's approved return on equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of public utility's requested rate increase (decrease) with regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
Name: | us-gaap_RegulatoryAssetsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_BaseRateStipulationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_BPUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_SAFEIIAndNJRISEMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_BGSSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_BGSSBalancingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_ConservationIncentiveProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_SAVEGREENMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_RACMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_NJCEPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_USFMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |