XML 146 R109.htm IDEA: XBRL DOCUMENT
v3.20.2

INCOME TAXES - ADDITIONAL INFORMATION (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 22, 2018 | Jan. 01, 2018 | Dec. 31, 2017 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2024 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | May 31, 2019
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |
Investment tax credit, solar property, percentage |  |  |  |  |  |  |  |  |  | 30.00% | 30.00%
Income tax expense (benefit), solar investment tax credit, net of deferred taxes |  |  |  |  |  |  |  |  |  |  | $ 10,000
Deferred employer portion of OASDI |  |  |  | $ 3,100 |  |  |  |  |  |  |
Deferred tax assets, operating loss carryforwards, domestic, refundable and receivables |  |  |  | 22,800 | $ 22,800 |  |  |  |  |  |
Federal net operating losses |  |  |  | 24,091 | 24,173 |  |  |  |  |  |
Tax credit carryforward |  |  |  | $ 195,200 | 154,200 |  |  |  |  |  |
Net operating losses, life |  |  |  | 20 years |  |  |  |  |  |  |
Valuation allowance |  |  |  | $ 17,600 | $ 4,000 |  |  |  |  |  |
Federal statutory rate |  | 21.00% | 35.00% | 21.00% | 21.00% | 24.50% |  |  |  |  |
Tax cuts and jobs act, income tax expense (benefit) |  |  |  |  | $ (59,600) |  |  |  |  |  |
Change in tax rate, deferred tax liability, provisional income tax (expense) benefit |  |  |  |  |  | $ 228,400 |  |  |  |  |
Change in tax rate, deferred income taxes |  |  |  |  |  | 164,300 |  |  |  |  |
Change in tax rate, provisional income tax expense (benefit) |  |  |  |  |  | 64,100 |  |  |  |  |
Initial revaluation of excess deferred income taxes | $ 20,100 |  |  |  |  |  |  |  |  |  |
Overcollection of taxes | 9,000 |  |  |  |  |  |  |  |  |  |
Deferred income tax expense (benefit), remeasurement |  |  |  |  |  | 14,300 |  |  |  |  |
Amortization of excess deferred income taxes |  |  |  |  |  | 1,800 |  |  |  |  |
Revaluation of deferred income taxes not included in base rates |  |  |  |  |  | 880 |  |  |  |  |
Regulatory liability, excess deferred income taxes |  |  |  | $ 195,000 |  |  |  |  |  |  |
March 2018 BGSS/CIP Filing |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |
Approved customer refunds | $ 31,000 |  |  |  |  |  |  |  |  |  |
Forecast |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |
Investment tax credit, solar property, percentage |  |  |  |  |  |  | 10.00% | 22.00% | 26.00% |  |
Clean Energy Ventures |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |
Federal net operating losses |  |  |  | 24,100 |  |  |  |  |  |  |
Natural Gas Distribution |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |
Tax credit carryforward |  |  |  | 898 | 2,000 |  |  |  |  |  |
Income tax expense (benefit) provision |  |  |  |  |  | $ 17,000 |  |  |  |  |
Domestic Tax Authority |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating losses |  |  |  | 134,000 | 134,000 |  |  |  |  |  |
State and Local Jurisdiction |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating losses |  |  |  | $ 487,700 | $ 340,000 |  |  |  |  |  |
State and Local Jurisdiction | Minimum |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating losses, life |  |  |  | 7 years |  |  |  |  |  |  |
State and Local Jurisdiction | Maximum |  |  |  |  |  |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net operating losses, life |  |  |  | 20 years |  |  |  |  |  |  |

X
- Definition Amortization Of Excess Deferred Income Taxes + References No definition available. + Details
Name: | njr_AmortizationOfExcessDeferredIncomeTaxes
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Income Tax Expense (Benefit), Remeasurement + References No definition available. + Details
Name: | njr_DeferredIncomeTaxExpenseBenefitRemeasurement
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Tax Assets, Operating Loss Carryforwards, Domestic, Refundable and Receivables + References No definition available. + Details
Name: | njr_DeferredTaxAssetsOperatingLossCarryforwardsDomesticRefundableandReceivables
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Income Tax Expense (Benefit) Provision + References No definition available. + Details
Name: | njr_IncomeTaxExpenseBenefitProvision
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Income Tax Expense (Benefit), Solar Investment Tax Credit, Net of Deferred Taxes + References No definition available. + Details
Name: | njr_IncomeTaxExpenseBenefitSolarInvestmentTaxCreditNetofDeferredTaxes
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investment Tax Credit, Solar Property, Percentage + References No definition available. + Details
Name: | njr_InvestmentTaxCreditSolarPropertyPercentage
Namespace Prefix: | njr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit) + References No definition available. + Details
Name: | njr_JobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Old Age Survivors And Disability Insurance Tax, Employer, Deferral, CARES Act + References No definition available. + Details
Name: | njr_OldAgeSurvivorsAndDisabilityInsuranceTaxEmployerDeferralCARESAct
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Operating Loss Carryforward, Expiration Terms + References No definition available. + Details
Name: | njr_OperatingLossCarryforwardExpirationTerms
Namespace Prefix: | njr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Public Utilities, Approved Customer Refunds, Amount + References No definition available. + Details
Name: | njr_PublicUtilitiesApprovedCustomerRefundsAmount
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Regulatory Liability, Excess Deferred Income Taxes + References No definition available. + Details
Name: | njr_RegulatoryLiabilityExcessDeferredIncomeTaxes
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Revaluation Of Deferred Income Taxes Not Included In Base Rates + References No definition available. + Details
Name: | njr_RevaluationOfDeferredIncomeTaxesNotIncludedInBaseRates
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts And Jobs Acts Of 2017, Incomplete Accounting, Initial Revaluation Of Excess Deferred Income Taxes + References No definition available. + Details
Name: | njr_TaxCutsAndJobsActsOf2017IncompleteAccountingInitialRevaluationOfExcessDeferredIncomeTaxes
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts And Jobs Acts Of 2017, Overcollection of Taxes + References No definition available. + Details
Name: | njr_TaxCutsAndJobsActsOf2017OvercollectionofTaxes
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Income Taxes + References No definition available. + Details
Name: | njr_TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateDeferredIncomeTaxes
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax(Expense) Benefit + References No definition available. + Details
Name: | njr_TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateDeferredTaxLiabilityProvisionalIncomeTaxExpenseBenefit
Namespace Prefix: | njr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 + Details
Name: | us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
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_IncomeTaxContingencyLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
Name: | us-gaap_OperatingLossCarryforwards
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
Name: | us-gaap_OperatingLossCarryforwardsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
Name: | us-gaap_TaxCreditCarryforwardAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of income tax expense (benefit) from effect of Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
Name: | us-gaap_TaxCutsAndJobsActOf2017IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=njr_March2018BGSSCIPFilingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAndLocalJurisdictionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |