$NFG
NATIONAL FUEL GAS CO Stock $nfg

$nfg Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-K Financial Statement

#000007014524000036 Filed on November 22, 2024

Income Statement

Concept	2024 Q4	2024 Q3	2024
Revenue		$372.1M	$1.945B
YoY Change		0.86%	-10.53%
Cost Of Revenue		-$17.38M	$150.1M
YoY Change		34.74%	-65.71%
Gross Profit		$389.5M	$1.795B
YoY Change		2.0%	3.37%
Gross Profit Margin		104.67%	92.28%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization		$108.8M	$457.0M
YoY Change		-0.69%	11.59%
% of Gross Profit		27.95%	25.46%
Operating Expenses		$267.6M	$1.066B
YoY Change		4.32%	8.65%
Operating Profit		$121.9M	$209.7M
YoY Change		-2.74%	-72.23%
Interest Expense		-$34.65M	$138.7M
YoY Change		5.33%	5.16%
% of Operating Profit		-28.44%	66.13%
Other Income/Expense, Net		$3.237M	$16.23M
YoY Change		-40.06%	-10.54%
Pretax Income		-$228.0M	$87.26M
YoY Change		-333.12%	-86.4%
Income Tax		-$60.37M	$9.742M
% Of Pretax Income			11.16%
Net Earnings		-$167.6M	$77.51M
YoY Change		-327.44%	-83.75%
Net Earnings / Revenue		-45.05%	3.99%
Basic Earnings Per Share			$0.84
Diluted Earnings Per Share		-$1.84	$0.84
COMMON SHARES
Basic Shares Outstanding	90.82M shares	91.36M shares	91.79M shares
Diluted Shares Outstanding			92.34M shares

Balance Sheet

Concept	2024 Q3	2024
SHORT-TERM ASSETS
Cash & Short-Term Investments	$38.22M	$38.22M
YoY Change	-31.01%	-31.01%
Cash & Equivalents	$38.22M	$38.22M
Short-Term Investments
Other Short-Term Assets	$92.23M	$86.44M
YoY Change	-8.01%	0.27%
Inventory	$82.73M	$82.73M
Prepaid Expenses
Receivables	$127.2M	$127.2M
Other Receivables	$21.32M	$21.32M
Total Short-Term Assets	$355.9M	$355.9M
YoY Change	-14.12%	-14.11%
LONG-TERM ASSETS
Property, Plant & Equipment	$7.339B	$7.339B
YoY Change	0.54%	0.54%
Goodwill	$5.500M
YoY Change	0.0%
Intangibles
YoY Change
Long-Term Investments	$81.71M	$81.71M
YoY Change	10.41%	10.41%
Other Assets	$5.958M	$537.5M
YoY Change	21.82%	10.48%
Total Long-Term Assets	$7.964B	$7.964B
YoY Change	1.25%	1.25%
TOTAL ASSETS
Total Short-Term Assets	$355.9M	$355.9M
Total Long-Term Assets	$7.964B	$7.964B
Total Assets	$8.320B	$8.320B
YoY Change	0.48%	0.48%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$165.1M	$165.1M
YoY Change	8.46%	8.45%
Accrued Expenses	$162.9M	$145.8M
YoY Change	1.2%	16.08%
Deferred Revenue
YoY Change
Short-Term Debt	$90.70M	$90.70M
YoY Change	-68.45%	-68.45%
Long-Term Debt Due	$500.0M	$500.0M
YoY Change
Total Short-Term Liabilities	$1.096B	$1.096B
YoY Change	35.91%	35.92%
LONG-TERM LIABILITIES
Long-Term Debt	$2.188B	$2.188B
YoY Change	-8.23%	-8.23%
Other Long-Term Liabilities	$120.0M	$1.076B
YoY Change	-1.46%	7.41%
Total Long-Term Liabilities	$2.187B	$3.264B
YoY Change	2.88%	-3.6%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.096B	$1.096B
Total Long-Term Liabilities	$2.187B	$3.264B
Total Liabilities	$3.283B	$5.471B
YoY Change	11.96%	2.91%
SHAREHOLDERS EQUITY
Retained Earnings	$1.727B
YoY Change	-8.41%
Common Stock	$91.01M
YoY Change	-0.89%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	-$15.48M	$2.848B
YoY Change
Total Liabilities & Shareholders Equity	$8.320B	$8.320B
YoY Change	0.48%	0.48%

Cashflow Statement

Concept	2024 Q3	2024
OPERATING ACTIVITIES
Net Income	-$167.6M	$77.51M
YoY Change	-327.44%	-83.75%
Depreciation, Depletion And Amortization	$108.8M	$457.0M
YoY Change	-0.69%	11.59%
Cash From Operating Activities	$197.9M	$1.066B
YoY Change	8.76%	-13.83%
INVESTING ACTIVITIES
Capital Expenditures	$247.0M	$931.2M
YoY Change	-12.46%	-7.79%
Acquisitions
YoY Change
Other Investing Activities	-$1.298M	$2.669M
YoY Change	18.0%	-121.74%
Cash From Investing Activities	-$248.3M	-$933.9M
YoY Change	-12.31%	-16.04%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$64.09M
YoY Change
Debt Paid & Issued, Net		$0.00
YoY Change		-100.0%
Cash From Financing Activities	7.196M	-$149.3M
YoY Change	-93.03%	-27.88%
NET CHANGE
Cash From Operating Activities	197.9M	$1.066B
Cash From Investing Activities	-248.3M	-$933.9M
Cash From Financing Activities	7.196M	-$149.3M
Net Change In Cash	-43.19M	-$17.23M
YoY Change	-2156.76%	-79.06%
FREE CASH FLOW
Cash From Operating Activities	$197.9M	$1.066B
Capital Expenditures	$247.0M	$931.2M
Free Cash Flow	-$49.09M	$134.7M
YoY Change	-51.01%	-40.7%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2024Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2024Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2024	dei	Document Type DocumentType	10-K
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CY2022	us-gaap	Increase Decrease In Security Deposits IncreaseDecreaseInSecurityDeposits	4991000	usd
CY2023	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-67664000	usd
CY2024	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	48183000	usd
CY2023	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	26564000	usd
CY2024	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-25481000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	137718000	usd
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	120138000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	38222000	usd
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CY2024Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	109100000	usd
CY2024Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	523100000	usd
CY2024	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	90822810	shares
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	1384266000	usd
CY2024	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	16226000	usd
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CY2024	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	87255000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	641399000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	682650000	usd
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9742000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	164533000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	116629000	usd
CY2024	us-gaap	Net Income Loss NetIncomeLoss	77513000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	476866000	usd
CY2024	nfg	Beginning Retained Earnings Unappropriated And Current Period Net Income Loss BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss	1963369000	usd
CY2023	nfg	Beginning Retained Earnings Unappropriated And Current Period Net Income Loss BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss	2063951000	usd
CY2022	nfg	Beginning Retained Earnings Unappropriated And Current Period Net Income Loss BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss	1757196000	usd
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CY2023Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1124170000	usd
CY2023Q3	nfg	Taxes Refundable To Customers TaxesRefundableToCustomers	268562000	usd
CY2023Q3	nfg	Cost Of Removal Regulatory Liability CostOfRemovalRegulatoryLiability	277694000	usd
CY2023Q3	nfg	Regulatory Liability Noncurrent Other RegulatoryLiabilityNoncurrentOther	165441000	usd
CY2023Q3	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	2915000	usd
CY2023Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	165492000	usd
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CY2023Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	2126087000	usd
CY2023Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
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CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	409573000	usd
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CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	137718000	usd
CY2024	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	88851000	usd
CY2023	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-19647000	usd
CY2024	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-34369000	usd
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CY2024	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
CY2024	dei	Amendment Flag AmendmentFlag	false
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CY2023	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Excluding Service Cost Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditExcludingServiceCostStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2024#OtherNonoperatingIncomeExpense
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CY2024	dei	Document Annual Report DocumentAnnualReport	true
CY2024	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
CY2024	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2024	dei	Document Transition Report DocumentTransitionReport	false
CY2024	dei	Entity File Number EntityFileNumber	1-3880
CY2024	dei	Entity Registrant Name EntityRegistrantName	National Fuel Gas Company
CY2024	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NJ
CY2024	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-1086010
CY2024	dei	Entity Address Address Line1 EntityAddressAddressLine1	6363 Main Street
CY2024	dei	Entity Address City Or Town EntityAddressCityOrTown	Williamsville,
CY2024	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
CY2024	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	14221
CY2024	dei	City Area Code CityAreaCode	716
CY2024	dei	Local Phone Number LocalPhoneNumber	857-7000
CY2024	dei	Security12b Title Security12bTitle	Common Stock, par value $1.00 per share
CY2024	dei	Trading Symbol TradingSymbol	NFG
CY2024	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2024	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2024	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2024	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2024	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2024	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2024	dei	Entity Small Business EntitySmallBusiness	false
CY2024	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2024	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
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CY2024	dei	Entity Listing Par Value Per Share EntityListingParValuePerShare	1.00
CY2024	dei	Auditor Firm AuditorFirmId	238
CY2024	dei	Auditor Name AuditorName	PRICEWATERHOUSECOOPERS LLP
CY2024	dei	Auditor Location AuditorLocation	Buffalo, New York
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CY2024	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.20
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.19
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CY2024	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91791167	shares
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91748890	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91410625	shares
CY2024	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92344511	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92285918	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92107066	shares
CY2024	us-gaap	Net Income Loss NetIncomeLoss	77513000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	476866000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	566021000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	17511000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	9660000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-9561000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	2507000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	1674000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	11054000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	286894000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	708206000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-1050831000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	216655000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-88656000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-882581000	usd
CY2024	nfg	Other Comprehensive Income Loss Other Post Retirement Adjustment For Regulatory Proceeding OtherComprehensiveIncomeLossOtherPostRetirementAdjustmentForRegulatoryProceeding	0	usd
CY2023	nfg	Other Comprehensive Income Loss Other Post Retirement Adjustment For Regulatory Proceeding OtherComprehensiveIncomeLossOtherPostRetirementAdjustmentForRegulatoryProceeding	0	usd
CY2022	nfg	Other Comprehensive Income Loss Other Post Retirement Adjustment For Regulatory Proceeding OtherComprehensiveIncomeLossOtherPostRetirementAdjustmentForRegulatoryProceeding	-7351000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	55235000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	788876000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-154986000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	3996000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	2284000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	-2169000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	584000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	411000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	2574000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	81197000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	214270000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-287608000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	62134000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-5806000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-241559000	usd
CY2024	nfg	Other Comprehensive Income Loss Income Tax Expense Benefit Related To Other Post Retirement Adjustment For Regulatory Proceeding OtherComprehensiveIncomeLossIncomeTaxExpenseBenefitRelatedToOtherPostRetirementAdjustmentForRegulatoryProceeding	0	usd
CY2023	nfg	Other Comprehensive Income Loss Income Tax Expense Benefit Related To Other Post Retirement Adjustment For Regulatory Proceeding OtherComprehensiveIncomeLossIncomeTaxExpenseBenefitRelatedToOtherPostRetirementAdjustmentForRegulatoryProceeding	0	usd
CY2022	nfg	Other Comprehensive Income Loss Income Tax Expense Benefit Related To Other Post Retirement Adjustment For Regulatory Proceeding OtherComprehensiveIncomeLossIncomeTaxExpenseBenefitRelatedToOtherPostRetirementAdjustmentForRegulatoryProceeding	-1544000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	15651000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	218203000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-42850000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	39584000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	570673000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-112136000	usd
CY2024	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	117097000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1047539000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	453885000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	14524798000	usd
CY2023Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	13635303000	usd
CY2024Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7185593000	usd
CY2023Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	6335441000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7339205000	usd
CY2023Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7299862000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	38222000	usd
CY2023Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	55447000	usd
CY2024Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	26194000	usd
CY2023Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	36295000	usd
CY2024Q3	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	127222000	usd
CY2023Q3	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	160601000	usd
CY2024Q3	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	15521000	usd
CY2023Q3	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	16622000	usd
CY2024Q3	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	35055000	usd
CY2023Q3	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	32509000	usd
CY2024Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	47670000	usd
CY2023Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	48989000	usd
CY2024Q3	us-gaap	Other Assets Current OtherAssetsCurrent	92229000	usd
CY2023Q3	us-gaap	Other Assets Current OtherAssetsCurrent	100260000	usd
CY2024Q3	us-gaap	Assets Current AssetsCurrent	355919000	usd
CY2023Q3	us-gaap	Assets Current AssetsCurrent	414428000	usd
CY2024Q3	nfg	Recoverable Future Taxes RecoverableFutureTaxes	80084000	usd
CY2023Q3	nfg	Recoverable Future Taxes RecoverableFutureTaxes	69045000	usd
CY2024Q3	us-gaap	Unamortized Loss Reacquired Debt Noncurrent UnamortizedLossReacquiredDebtNoncurrent	5604000	usd
CY2023Q3	us-gaap	Unamortized Loss Reacquired Debt Noncurrent UnamortizedLossReacquiredDebtNoncurrent	7240000	usd
CY2024Q3	nfg	Regulatory Asset Noncurrent Other RegulatoryAssetNoncurrentOther	108022000	usd
CY2023Q3	nfg	Regulatory Asset Noncurrent Other RegulatoryAssetNoncurrentOther	72138000	usd
CY2024Q3	us-gaap	Deferred Costs DeferredCosts	69662000	usd
CY2023Q3	us-gaap	Deferred Costs DeferredCosts	82416000	usd
CY2024Q3	us-gaap	Other Investments OtherInvestments	81705000	usd
CY2023Q3	us-gaap	Other Investments OtherInvestments	73976000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	5476000	usd
CY2023Q3	us-gaap	Goodwill Goodwill	5476000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	180230000	usd
CY2023Q3	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	200301000	usd
CY2024Q3	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	87905000	usd
CY2023Q3	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	50487000	usd
CY2024Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	5958000	usd
CY2023Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	4891000	usd
CY2024Q3	nfg	Total Other Assets TotalOtherAssets	624646000	usd
CY2023Q3	nfg	Total Other Assets TotalOtherAssets	565970000	usd
CY2024Q3	us-gaap	Assets Assets	8319770000	usd
CY2023Q3	us-gaap	Assets Assets	8280260000	usd
CY2023Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	91005993	shares
CY2024Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	91005993	shares
CY2023Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	91819405	shares
CY2023Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	91819405	shares
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	91006000	usd
CY2023Q3	us-gaap	Common Stock Value CommonStockValue	91819000	usd
CY2024Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1045487000	usd
CY2023Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1040761000	usd
CY2024Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1727326000	usd
CY2023Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1885856000	usd
CY2024Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-15476000	usd
CY2023Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-55060000	usd
CY2024Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2848343000	usd
CY2023Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2963376000	usd
CY2024Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2188243000	usd
CY2023Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2384485000	usd
CY2024Q3	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	5036586000	usd
CY2023Q3	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	5347861000	usd
CY2024Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	90700000	usd
CY2023Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	287500000	usd
CY2024Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	500000000	usd
CY2023Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	usd
CY2024Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	165068000	usd
CY2023Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	152193000	usd
CY2024Q3	us-gaap	Refundable Gas Costs RefundableGasCosts	42720000	usd
CY2023Q3	us-gaap	Refundable Gas Costs RefundableGasCosts	59019000	usd
CY2024Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	46872000	usd
CY2023Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	45451000	usd
CY2024Q3	nfg	Interest Payable On Long Term Debt InterestPayableOnLongTermDebt	27247000	usd
CY2023Q3	nfg	Interest Payable On Long Term Debt InterestPayableOnLongTermDebt	20399000	usd
CY2024Q3	nfg	Customer Advances CustomerAdvances	19373000	usd
CY2023Q3	nfg	Customer Advances CustomerAdvances	21003000	usd
CY2024Q3	us-gaap	Security Deposit Liability SecurityDepositLiability	36265000	usd
CY2023Q3	us-gaap	Security Deposit Liability SecurityDepositLiability	28764000	usd
CY2024Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	162903000	usd
CY2023Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	160974000	usd
CY2024Q3	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	4744000	usd
CY2023Q3	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	31009000	usd
CY2024Q3	us-gaap	Liabilities Current LiabilitiesCurrent	1095892000	usd
CY2024Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1111165000	usd
CY2024Q3	nfg	Taxes Refundable To Customers TaxesRefundableToCustomers	305645000	usd
CY2024Q3	nfg	Cost Of Removal Regulatory Liability CostOfRemovalRegulatoryLiability	292477000	usd
CY2024Q3	nfg	Regulatory Liability Noncurrent Other RegulatoryLiabilityNoncurrentOther	151452000	usd
CY2024Q3	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	3511000	usd
CY2024Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	203006000	usd
CY2024Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	120036000	usd
CY2024Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	2187292000	usd
CY2024Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2024Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	8319770000	usd
CY2024	us-gaap	Net Income Loss NetIncomeLoss	77513000	usd
CY2024	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	0	usd
CY2024	us-gaap	Asset Impairment Charges AssetImpairmentCharges	519129000	usd
CY2023	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2022	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2024	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	457026000	usd
CY2024	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-2610000	usd
CY2024	us-gaap	Share Based Compensation ShareBasedCompensation	22080000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	20630000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	19506000	usd
CY2024	nfg	Decrease In Regulatory Liability For Previously Deferred Opeb Income DecreaseInRegulatoryLiabilityForPreviouslyDeferredOPEBIncome	0	usd
CY2023	nfg	Decrease In Regulatory Liability For Previously Deferred Opeb Income DecreaseInRegulatoryLiabilityForPreviouslyDeferredOPEBIncome	0	usd
CY2022	nfg	Decrease In Regulatory Liability For Previously Deferred Opeb Income DecreaseInRegulatoryLiabilityForPreviouslyDeferredOPEBIncome	18533000	usd
CY2024	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-24411000	usd
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-31983000	usd
CY2023	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-213579000	usd
CY2022	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	168769000	usd
CY2024	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1738000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	8406000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3109000	usd
CY2024	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	0	usd
CY2023	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	-99342000	usd
CY2022	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	66214000	usd
CY2024	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-8144000	usd
CY2023	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	41077000	usd
CY2022	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-291000	usd
CY2024	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	5616000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-37095000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	11907000	usd
CY2024	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-16299000	usd
CY2023	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	58600000	usd
CY2022	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	398000	usd
CY2024	nfg	Increase Decrease In Customer Advances Current IncreaseDecreaseInCustomerAdvancesCurrent	-1630000	usd
CY2023	nfg	Increase Decrease In Customer Advances Current IncreaseDecreaseInCustomerAdvancesCurrent	-5105000	usd
CY2022	nfg	Increase Decrease In Customer Advances Current IncreaseDecreaseInCustomerAdvancesCurrent	8885000	usd
CY2024	us-gaap	Increase Decrease In Security Deposits IncreaseDecreaseInSecurityDeposits	7501000	usd
CY2023	us-gaap	Increase Decrease In Security Deposits IncreaseDecreaseInSecurityDeposits	4481000	usd
CY2024	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	2637000	usd
CY2022	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	34260000	usd
CY2022	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	58924000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-31135000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-17859000	usd
CY2024	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1065961000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1237075000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	812521000	usd
CY2024	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	931236000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1009868000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	811826000	usd
CY2024	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	0	usd
CY2023	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	0	usd
CY2022	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	254439000	usd
CY2024	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	0	usd
CY2023	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	10000000	usd
CY2022	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	30000000	usd
CY2024	nfg	Acquisition Of Upstream Assets AcquisitionOfUpstreamAssets	0	usd
CY2023	nfg	Acquisition Of Upstream Assets AcquisitionOfUpstreamAssets	124758000	usd
CY2022	nfg	Acquisition Of Upstream Assets AcquisitionOfUpstreamAssets	0	usd
CY2024	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2669000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-12279000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-8683000	usd
CY2024	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-933905000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1112347000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-518704000	usd
CY2024	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	0	usd
CY2023	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	250000000	usd
CY2022	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	0	usd
CY2024	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	0	usd
CY2023	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	250000000	usd
CY2022	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	0	usd
CY2024	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-196800000	usd
CY2023	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	227500000	usd
CY2022	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-98500000	usd
CY2024	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	299359000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	297306000	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	usd
CY2024	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	64086000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2024	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	549000000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2024	nfg	Payments For Repurchase Of Common Stock Under Stock And Benefit Plans Net PaymentsForRepurchaseOfCommonStockUnderStockAndBenefitPlansNet	3956000	usd
CY2023	nfg	Payments For Repurchase Of Common Stock Under Stock And Benefit Plans Net PaymentsForRepurchaseOfCommonStockUnderStockAndBenefitPlansNet	6709000	usd
CY2022	nfg	Payments For Repurchase Of Common Stock Under Stock And Benefit Plans Net PaymentsForRepurchaseOfCommonStockUnderStockAndBenefitPlansNet	9590000	usd
CY2024	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	183798000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	176096000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	168147000	usd
CY2024	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-149281000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-206999000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-276237000	usd
CY2024	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-17225000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-82271000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	17580000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	55447000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	55447000	usd
CY2024	us-gaap	Interest Paid Net InterestPaidNet	125130000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	124441000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	124312000	usd
CY2024	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4132000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	38098000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16680000	usd
CY2024	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	119988000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	109208000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	120262000	usd
CY2024	nfg	Other Significant Noncash Transaction Value Of Contingent Consideration From Asset Sale OtherSignificantNoncashTransactionValueOfContingentConsiderationFromAssetSale	0	usd
CY2023	nfg	Other Significant Noncash Transaction Value Of Contingent Consideration From Asset Sale OtherSignificantNoncashTransactionValueOfContingentConsiderationFromAssetSale	0	usd
CY2022	nfg	Other Significant Noncash Transaction Value Of Contingent Consideration From Asset Sale OtherSignificantNoncashTransactionValueOfContingentConsiderationFromAssetSale	12571000	usd
CY2023Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	36295000	usd
CY2022Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	40228000	usd
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	31639000	usd
CY2024	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	13180000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	14482000	usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	13209000	usd
CY2024	us-gaap	Accounts Receivable Purchase AccountsReceivablePurchase	753000	usd
CY2023	us-gaap	Accounts Receivable Purchase AccountsReceivablePurchase	1380000	usd
CY2022	us-gaap	Accounts Receivable Purchase AccountsReceivablePurchase	1314000	usd
CY2024	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	24034000	usd
CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	19795000	usd
CY2022	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	5934000	usd
CY2024Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	26194000	usd
CY2023Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	36295000	usd
CY2022Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	40228000	usd
CY2024	nfg	Weather Impact On Revenues Tempered By Wna Period WeatherImpactOnRevenuesTemperedByWNAPeriod	P8M
CY2024	nfg	Weather Impact On Revenues Tempered By Wna Period WeatherImpactOnRevenuesTemperedByWNAPeriod	P8M
CY2024	nfg	Above Below Average Weather Normalized Usage Surcharge Calculation Period AboveBelowAverageWeatherNormalizedUsageSurchargeCalculationPeriod	P12M
CY2024Q3	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	2300000000	usd
CY2023Q3	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	2400000000	usd
CY2024Q3	nfg	Full Cost Ceiling Test Discount Factor FullCostCeilingTestDiscountFactor	0.10
CY2024	nfg	Impairment Of Exploration And Production Properties ImpairmentOfExplorationAndProductionProperties	463700000	usd
CY2024	us-gaap	Effect On Future Cash Flows Amount EffectOnFutureCashFlowsAmount	428500000	usd
CY2023	us-gaap	Effect On Future Cash Flows Amount EffectOnFutureCashFlowsAmount	38800000	usd
CY2022	us-gaap	Effect On Future Cash Flows Amount EffectOnFutureCashFlowsAmount	-1000000000.0	usd
CY2024	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	270600000	usd
CY2023	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	235700000	usd
CY2022	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	202400000	usd
CY2024Q3	nfg	Depreciable Plant Assets DepreciablePlantAssets	13998897000	usd
CY2023Q3	nfg	Depreciable Plant Assets DepreciablePlantAssets	13101006000	usd
CY2023Q3	us-gaap	Goodwill Goodwill	5500000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	5500000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	-55060000	usd
CY2024	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	192182000	usd
CY2024	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	152598000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	-15476000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	-625733000	usd
CY2023	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	486560000	usd
CY2023	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-84113000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	-55060000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax	400000	usd
CY2023Q3	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax	400000	usd
CY2024Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	70900000	usd
CY2023Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	59300000	usd
CY2024Q3	us-gaap	Remaining Recovery Period Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided1 RemainingRecoveryPeriodOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided1	P4Y
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	38222000	usd
CY2023Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	55447000	usd
CY2022Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	46048000	usd
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	31528000	usd
CY2024Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	0	usd
CY2023Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	0	usd
CY2022Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	91670000	usd
CY2021Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	88610000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	38222000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	55447000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	137718000	usd
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	120138000	usd
CY2024Q3	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	18463000	usd
CY2023Q3	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	18966000	usd
CY2024Q3	us-gaap	Prepaid Taxes PrepaidTaxes	14187000	usd
CY2023Q3	us-gaap	Prepaid Taxes PrepaidTaxes	14186000	usd
CY2024Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	38264000	usd
CY2023Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	36373000	usd
CY2024Q3	us-gaap	Other Assets Current OtherAssetsCurrent	92229000	usd
CY2023Q3	us-gaap	Other Assets Current OtherAssetsCurrent	100260000	usd
CY2024Q3	nfg	Other Accrued Liabilities Accrued Capital Expenditures OtherAccruedLiabilitiesAccruedCapitalExpenditures	47344000	usd
CY2023Q3	nfg	Other Accrued Liabilities Accrued Capital Expenditures OtherAccruedLiabilitiesAccruedCapitalExpenditures	43323000	usd
CY2024Q3	nfg	Regulatory Liability Current Other RegulatoryLiabilityCurrentOther	29352000	usd
CY2023Q3	nfg	Regulatory Liability Current Other RegulatoryLiabilityCurrentOther	38105000	usd
CY2024Q3	nfg	Liability For Royalty And Working Interest Current LiabilityForRoyaltyAndWorkingInterestCurrent	15007000	usd
CY2023Q3	nfg	Liability For Royalty And Working Interest Current LiabilityForRoyaltyAndWorkingInterestCurrent	17679000	usd
CY2024Q3	nfg	Defined Benefit Plan Benefit Obligation Current DefinedBenefitPlanBenefitObligationCurrent	14135000	usd
CY2023Q3	nfg	Defined Benefit Plan Benefit Obligation Current DefinedBenefitPlanBenefitObligationCurrent	13052000	usd
CY2024Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	57065000	usd
CY2023Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	48815000	usd
CY2024Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	162903000	usd
CY2023Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	160974000	usd
CY2024	nfg	Balanced Billing Estimated Annual Usage Payment Period BalancedBillingEstimatedAnnualUsagePaymentPeriod	P12M
CY2024Q3	nfg	Customer Advances CustomerAdvances	19400000	usd
CY2023Q3	nfg	Customer Advances CustomerAdvances	21000000.0	usd
CY2024Q3	us-gaap	Security Deposit Liability SecurityDepositLiability	36300000	usd
CY2023Q3	us-gaap	Security Deposit Liability SecurityDepositLiability	28800000	usd
CY2024	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	569	shares
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3888	shares
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2858	shares
CY2024	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1707359000	usd
CY2024	nfg	Alternative Revenue Programs AlternativeRevenuePrograms	20439000	usd
CY2024	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	217012000	usd
CY2024	us-gaap	Revenues Revenues	1944810000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2254894000	usd
CY2023	nfg	Alternative Revenue Programs AlternativeRevenuePrograms	6892000	usd
CY2023	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-88015000	usd
CY2023	us-gaap	Revenues Revenues	2173771000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3061283000	usd
CY2022	nfg	Alternative Revenue Programs AlternativeRevenuePrograms	7357000	usd
CY2022	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-882594000	usd
CY2022	us-gaap	Revenues Revenues	2186046000	usd
CY2024	nfg	Amount Billable Payment Period AmountBillablePaymentPeriod	P30D
CY2024Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	233800000	usd
CY2024Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	183500000	usd
CY2024	nfg	Receivables Or Customer Advances Settlement Period ReceivablesOrCustomerAdvancesSettlementPeriod	P1Y
CY2024	nfg	Alternative Revenue Programs Annual Reconciliation Period AlternativeRevenueProgramsAnnualReconciliationPeriod	P24M
CY2024	us-gaap	Operating Lease Cost OperatingLeaseCost	11827000	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	7484000	usd
CY2024	us-gaap	Variable Lease Cost VariableLeaseCost	601000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	507000	usd
CY2024	us-gaap	Short Term Lease Cost ShortTermLeaseCost	299000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1694000	usd
CY2024	us-gaap	Lease Cost LeaseCost	12727000	usd
CY2023	us-gaap	Lease Cost LeaseCost	9685000	usd
CY2024Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y8M12D
CY2023Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y1M6D
CY2024Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0568
CY2023Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0548
CY2024Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	44206000	usd
CY2023Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	39664000	usd
CY2024Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	11518000	usd
CY2023Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9969000	usd
CY2024Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	32616000	usd
CY2023Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	29510000	usd
CY2024	us-gaap	Operating Lease Payments OperatingLeasePayments	12700000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	9700000	usd
CY2024	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	11801000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	9653000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	8880000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	7707000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4478000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	9234000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	51753000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	7619000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	44134000	usd
CY2023Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	165492000	usd
CY2022Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	161545000	usd
CY2021Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	209639000	usd
CY2024	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	2367000	usd
CY2023	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	3313000	usd
CY2022	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	2401000	usd
CY2024	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	51967000	usd
CY2023	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	6728000	usd
CY2022	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	10700000	usd
CY2024	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	25556000	usd
CY2023	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	14448000	usd
CY2022	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	71171000	usd
CY2024	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	8736000	usd
CY2023	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	8354000	usd
CY2022	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	9976000	usd
CY2024Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	203006000	usd
CY2023Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	165492000	usd
CY2022Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	161545000	usd
CY2024Q3	us-gaap	Regulatory Assets RegulatoryAssets	231974000	usd
CY2023Q3	us-gaap	Regulatory Assets RegulatoryAssets	184796000	usd
CY2024Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	38264000	usd
CY2023Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	36373000	usd
CY2024Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	821646000	usd
CY2023Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	808821000	usd
CY2024Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	72072000	usd
CY2023Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	97124000	usd
CY2024Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	749574000	usd
CY2023Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	711697000	usd
CY2024	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	6453000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	11744000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	usd
CY2024	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5899000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1386000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12214000	usd
CY2024	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	894000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	106801000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	137025000	usd
CY2024	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3504000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	44602000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-32610000	usd
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9742000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	164533000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	116629000	usd
CY2024	nfg	Income From Continuing Operations Before Income Taxes IncomeFromContinuingOperationsBeforeIncomeTaxes	87255000	usd
CY2023	nfg	Income From Continuing Operations Before Income Taxes IncomeFromContinuingOperationsBeforeIncomeTaxes	641399000	usd
CY2022	nfg	Income From Continuing Operations Before Income Taxes IncomeFromContinuingOperationsBeforeIncomeTaxes	682650000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2024	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2024	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	18324000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	134694000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	143357000	usd
CY2024	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	usd
CY2023	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	usd
CY2022	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-24850000	usd
CY2024	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1892000	usd
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	36331000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	8736000	usd
CY2024	nfg	Effective Income Tax Rate Reconciliation Deductible Expense Amortization Of Excess Deferred Income Taxes EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTaxes	-5607000	usd
CY2023	nfg	Effective Income Tax Rate Reconciliation Deductible Expense Amortization Of Excess Deferred Income Taxes EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTaxes	-6053000	usd
CY2022	nfg	Effective Income Tax Rate Reconciliation Deductible Expense Amortization Of Excess Deferred Income Taxes EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTaxes	-5184000	usd
CY2024	nfg	Effective Income Tax Rate Reconciliation Plant Flow Through Items EffectiveIncomeTaxRateReconciliationPlantFlowThroughItems	-6135000	usd
CY2023	nfg	Effective Income Tax Rate Reconciliation Plant Flow Through Items EffectiveIncomeTaxRateReconciliationPlantFlowThroughItems	-2856000	usd
CY2022	nfg	Effective Income Tax Rate Reconciliation Plant Flow Through Items EffectiveIncomeTaxRateReconciliationPlantFlowThroughItems	-814000	usd
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	1758000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	957000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	820000	usd
CY2024	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	5000	usd
CY2023	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	6000	usd
CY2022	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	5701000	usd
CY2024	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-485000	usd
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1466000	usd
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	265000	usd
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9742000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	164533000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	116629000	usd
CY2024Q3	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	22433000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	3385000	usd
CY2024Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1134727000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1178893000	usd
CY2024Q3	nfg	Deferred Tax Liabilities Pension And Other Post Retirement Costs DeferredTaxLiabilitiesPensionAndOtherPostRetirementCosts	59877000	usd
CY2023Q3	nfg	Deferred Tax Liabilities Pension And Other Post Retirement Costs DeferredTaxLiabilitiesPensionAndOtherPostRetirementCosts	44358000	usd
CY2024Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	13885000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	21470000	usd
CY2024Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1230922000	usd
CY2023Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1248106000	usd
CY2024Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	31111000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	33744000	usd
CY2024Q3	nfg	Deferred Tax Assets Pension And Other Post Retirement Costs DeferredTaxAssetsPensionAndOtherPostRetirementCosts	49622000	usd
CY2023Q3	nfg	Deferred Tax Assets Pension And Other Post Retirement Costs DeferredTaxAssetsPensionAndOtherPostRetirementCosts	41843000	usd
CY2024Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	39024000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	48349000	usd
CY2024Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	119757000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	123936000	usd
CY2024Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1111165000	usd
CY2023Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1124170000	usd
CY2023Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2022Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2021Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	57645000	usd
CY2024	nfg	Valuation Allowance Deferred Tax Asset Change In Amount Additions ValuationAllowanceDeferredTaxAssetChangeInAmountAdditions	0	usd
CY2023	nfg	Valuation Allowance Deferred Tax Asset Change In Amount Additions ValuationAllowanceDeferredTaxAssetChangeInAmountAdditions	0	usd
CY2022	nfg	Valuation Allowance Deferred Tax Asset Change In Amount Additions ValuationAllowanceDeferredTaxAssetChangeInAmountAdditions	0	usd
CY2024	nfg	Valuation Allowance Deferred Tax Asset Change In Amount Deductions ValuationAllowanceDeferredTaxAssetChangeInAmountDeductions	0	usd
CY2023	nfg	Valuation Allowance Deferred Tax Asset Change In Amount Deductions ValuationAllowanceDeferredTaxAssetChangeInAmountDeductions	0	usd
CY2022	nfg	Valuation Allowance Deferred Tax Asset Change In Amount Deductions ValuationAllowanceDeferredTaxAssetChangeInAmountDeductions	57645000	usd
CY2024Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2023Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2022Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2022Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2024Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2023Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2022	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.86
CY2023	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.94
CY2024	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.02
CY2024Q3	nfg	Earnings Reinvested In Business Available For Dividends EarningsReinvestedInBusinessAvailableForDividends	1600000000	usd
CY2024	us-gaap	Stock Issued During Period Shares Employee Benefit Plan StockIssuedDuringPeriodSharesEmployeeBenefitPlan	0	shares
CY2024	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	0	shares
CY2024Q1	srt	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	200000000	usd
CY2024	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	19800000	usd
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18600000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17600000	usd
CY2024	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2500000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2400000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2500000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	100000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	100000	usd
CY2024	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	100000	usd
CY2024	nfg	Employee Service Share Based Compensation Tax Benefit From Exercises Vestings Stock Based Compensation EmployeeServiceShareBasedCompensationTaxBenefitFromExercisesVestingsStockBasedCompensation	300000	usd
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	3889027	shares
CY2024Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2024Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1
CY2024Q3	us-gaap	Unsecured Debt UnsecuredDebt	2700000000	usd
CY2023Q3	us-gaap	Unsecured Debt UnsecuredDebt	2400000000	usd
CY2024Q3	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-11757000	usd
CY2023Q3	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-15515000	usd
CY2024Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	500000000	usd
CY2023Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	usd
CY2024Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2188243000	usd
CY2023Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2384485000	usd
CY2024Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	500000000	usd
CY2024Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	800000000.0	usd
CY2024Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	600000000.0	usd
CY2024Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	300000000.0	usd
CY2024Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	usd
CY2024Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	500000000.0	usd
CY2024Q3	us-gaap	Commercial Paper At Carrying Value CommercialPaperAtCarryingValue	90700000	usd
CY2023Q3	us-gaap	Commercial Paper At Carrying Value CommercialPaperAtCarryingValue	287500000	usd
CY2024Q3	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	0	usd
CY2023Q3	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	0	usd
CY2024	nfg	Committed Credit Facility Debt To Capitalization Ratio CommittedCreditFacilityDebtToCapitalizationRatio	0.65
CY2024Q3	nfg	Committed Credit Facility Debt To Capitalization Ratio Ceiling Test Impairment Adjustment CommittedCreditFacilityDebtToCapitalizationRatioCeilingTestImpairmentAdjustment	0.50
CY2024Q3	nfg	Committed Credit Facility Debtto Capitalization Ratio Ceiling Test Impairment Maximum Adjustment CommittedCreditFacilityDebttoCapitalizationRatioCeilingTestImpairmentMaximumAdjustment	400000000	usd
CY2024	nfg	Cumulative Impairment Of Oil And Gas Producing Properties After Tax CumulativeImpairmentOfOilAndGasProducingPropertiesAfterTax	717900000	usd
CY2024Q3	nfg	Committed Credit Facility Debt To Capitalization Ratio Ceiling Test Impairment Adjustment Amount CommittedCreditFacilityDebtToCapitalizationRatioCeilingTestImpairmentAdjustmentAmount	358900000	usd
CY2024Q3	nfg	Debt To Capitalization Ratio Maximum Excluded Unrealized Gains Or Losses On Other Derivative Financial Instruments In Aoci DebtToCapitalizationRatioMaximumExcludedUnrealizedGainsOrLossesOnOtherDerivativeFinancialInstrumentsInAOCI	10000000	usd
CY2024	nfg	Debt To Capitalization Ratio DebtToCapitalizationRatio	0.47
CY2024Q3	us-gaap	Debt Instrument Unused Borrowing Capacity Amount DebtInstrumentUnusedBorrowingCapacityAmount	3070000000.00	usd
CY2024	nfg	Committed Credit Facility Debt To Capitalization Ratio CommittedCreditFacilityDebtToCapitalizationRatio	0.65
CY2024	nfg	Amount Which Could Trigger Repayment Obligation Under Committed Credit Facility AmountWhichCouldTriggerRepaymentObligationUnderCommittedCreditFacility	40000000.0	usd
CY2024	nfg	Amount Which Could Trigger Repayment Obligation Under Committed Credit Facility AmountWhichCouldTriggerRepaymentObligationUnderCommittedCreditFacility	40000000.0	usd
CY2024Q3	nfg	Indenture Test Period IndentureTestPeriod	P12M
CY2024Q3	nfg	Period Before Debt Issuance PeriodBeforeDebtIssuance	P15M
CY2024Q3	nfg	Indenture Test Period IndentureTestPeriod	P12M
CY2024Q3	nfg	Maximum Long Term Debt To Consolidated Asset Ratio Under Indenture MaximumLongTermDebtToConsolidatedAssetRatioUnderIndenture	0.60
CY2024Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	29238000	usd
CY2024Q3	nfg	Fair Value Assets Measured On Recurring Basis Total FairValueAssetsMeasuredOnRecurringBasisTotal	154040000	usd
CY2024Q3	nfg	Fair Value Liabilities Measured On Recurring Basis Total FairValueLiabilitiesMeasuredOnRecurringBasisTotal	4735000	usd
CY2024Q3	nfg	Fair Value Assets Liabilities Measured On Recurring Basis Net FairValueAssetsLiabilitiesMeasuredOnRecurringBasisNet	149305000	usd
CY2023Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	39332000	usd
CY2023Q3	nfg	Fair Value Assets Measured On Recurring Basis Total FairValueAssetsMeasuredOnRecurringBasisTotal	121553000	usd
CY2023Q3	nfg	Fair Value Liabilities Measured On Recurring Basis Total FairValueLiabilitiesMeasuredOnRecurringBasisTotal	31009000	usd
CY2023Q3	nfg	Fair Value Assets Liabilities Measured On Recurring Basis Net FairValueAssetsLiabilitiesMeasuredOnRecurringBasisNet	90544000	usd
CY2024Q3	us-gaap	Long Term Debt LongTermDebt	2688243000	usd
CY2024Q3	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	2656888000	usd
CY2023Q3	us-gaap	Long Term Debt LongTermDebt	2384485000	usd
CY2023Q3	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	2210478000	usd
CY2024Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	44808000	usd
CY2023Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	42242000	usd
CY2024Q3	us-gaap	Other Investments OtherInvestments	81705000	usd
CY2023Q3	us-gaap	Other Investments OtherInvestments	73976000	usd
CY2024	us-gaap	Maximum Remaining Maturity Of Foreign Currency Derivatives1 MaximumRemainingMaturityOfForeignCurrencyDerivatives1	P6Y
CY2024Q3	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	55800000	usd
CY2024	nfg	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months After Tax CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsAfterTax	33300000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	286894000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	708206000	usd
CY2024	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	216655000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-88656000	usd
CY2024Q3	us-gaap	Credit Risk Derivative Liabilities At Fair Value CreditRiskDerivativeLiabilitiesAtFairValue	0	usd
CY2024	nfg	Amortization Period AmortizationPeriod	P10Y
CY2024	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	9500000	usd
CY2023	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	8300000	usd
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	8900000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	57500000	usd
CY2023Q3	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	58500000	usd
CY2022Q3	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	64900000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	66000000.0	usd
CY2023Q3	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	69500000	usd
CY2022Q3	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	77200000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0471
CY2023Q3	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0591
CY2022Q3	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0549
CY2023Q3	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0800
CY2024Q3	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0800
CY2022Q3	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0800
CY2024	nfg	Estimated Gross Other Post Retirement Benefit Payments Rate Of Increase For Pre Age Sixty Five Participants EstimatedGrossOtherPostRetirementBenefitPaymentsRateOfIncreaseForPreAgeSixtyFiveParticipants	0.0625
CY2023	nfg	Estimated Gross Other Post Retirement Benefit Payments Rate Of Increase For Pre Age Sixty Five Participants EstimatedGrossOtherPostRetirementBenefitPaymentsRateOfIncreaseForPreAgeSixtyFiveParticipants	0.0625
CY2022	nfg	Estimated Gross Other Post Retirement Benefit Payments Rate Of Increase For Pre Age Sixty Five Participants EstimatedGrossOtherPostRetirementBenefitPaymentsRateOfIncreaseForPreAgeSixtyFiveParticipants	0.0530
CY2024	nfg	Estimated Gross Other Post Retirement Benefit Payments Rate Of Increase For Post Age Sixty Five Participants EstimatedGrossOtherPostRetirementBenefitPaymentsRateOfIncreaseForPostAgeSixtyFiveParticipants	0.0575
CY2023	nfg	Estimated Gross Other Post Retirement Benefit Payments Rate Of Increase For Post Age Sixty Five Participants EstimatedGrossOtherPostRetirementBenefitPaymentsRateOfIncreaseForPostAgeSixtyFiveParticipants	0.0500
CY2022	nfg	Estimated Gross Other Post Retirement Benefit Payments Rate Of Increase For Post Age Sixty Five Participants EstimatedGrossOtherPostRetirementBenefitPaymentsRateOfIncreaseForPostAgeSixtyFiveParticipants	0.0484
CY2024	nfg	Estimated Gross Other Post Retirement Benefit Payments Annual Rate Of Increase In Per Capita Cost Of Covered Prescription Drug Benefits EstimatedGrossOtherPostRetirementBenefitPaymentsAnnualRateOfIncreaseInPerCapitaCostOfCoveredPrescriptionDrugBenefits	0.1025
CY2023	nfg	Estimated Gross Other Post Retirement Benefit Payments Annual Rate Of Increase In Per Capita Cost Of Covered Prescription Drug Benefits EstimatedGrossOtherPostRetirementBenefitPaymentsAnnualRateOfIncreaseInPerCapitaCostOfCoveredPrescriptionDrugBenefits	0.0685
CY2022	nfg	Estimated Gross Other Post Retirement Benefit Payments Annual Rate Of Increase In Per Capita Cost Of Covered Prescription Drug Benefits EstimatedGrossOtherPostRetirementBenefitPaymentsAnnualRateOfIncreaseInPerCapitaCostOfCoveredPrescriptionDrugBenefits	0.0629
CY2024	nfg	Estimated Gross Other Post Retirement Benefit Payments Annual Rate Of Increase In Per Capita Medicare Part B Reimbursement EstimatedGrossOtherPostRetirementBenefitPaymentsAnnualRateOfIncreaseInPerCapitaMedicarePartBReimbursement	0.0575
CY2023	nfg	Estimated Gross Other Post Retirement Benefit Payments Annual Rate Of Increase In Per Capita Medicare Part B Reimbursement EstimatedGrossOtherPostRetirementBenefitPaymentsAnnualRateOfIncreaseInPerCapitaMedicarePartBReimbursement	0.0500
CY2022	nfg	Estimated Gross Other Post Retirement Benefit Payments Annual Rate Of Increase In Per Capita Medicare Part B Reimbursement EstimatedGrossOtherPostRetirementBenefitPaymentsAnnualRateOfIncreaseInPerCapitaMedicarePartBReimbursement	0.0484
CY2024	nfg	Estimated Gross Other Post Retirement Benefit Payments Annual Rate Of Increase In Per Capita Medicare Part D Subsidy EstimatedGrossOtherPostRetirementBenefitPaymentsAnnualRateOfIncreaseInPerCapitaMedicarePartDSubsidy	0.0400
CY2023	nfg	Estimated Gross Other Post Retirement Benefit Payments Annual Rate Of Increase In Per Capita Medicare Part D Subsidy EstimatedGrossOtherPostRetirementBenefitPaymentsAnnualRateOfIncreaseInPerCapitaMedicarePartDSubsidy	0.0660
CY2022	nfg	Estimated Gross Other Post Retirement Benefit Payments Annual Rate Of Increase In Per Capita Medicare Part D Subsidy EstimatedGrossOtherPostRetirementBenefitPaymentsAnnualRateOfIncreaseInPerCapitaMedicarePartDSubsidy	0.0596
CY2023Q3	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.04
CY2024Q3	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.04
CY2023Q3	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.04
CY2024Q3	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.04
CY2022Q3	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.04
CY2024Q3	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	2400000	usd
CY2024Q3	us-gaap	Recorded Unconditional Purchase Obligation Due Within One Year RecordedUnconditionalPurchaseObligationDueWithinOneYear	215600000	usd
CY2024Q3	us-gaap	Recorded Unconditional Purchase Obligation Due In Second Year RecordedUnconditionalPurchaseObligationDueInSecondYear	88400000	usd
CY2024Q3	us-gaap	Recorded Unconditional Purchase Obligation Due In Third Year RecordedUnconditionalPurchaseObligationDueInThirdYear	93200000	usd
CY2024Q3	us-gaap	Recorded Unconditional Purchase Obligation Due In Fourth Year RecordedUnconditionalPurchaseObligationDueInFourthYear	113100000	usd
CY2024Q3	us-gaap	Recorded Unconditional Purchase Obligation Due In Fifth Year RecordedUnconditionalPurchaseObligationDueInFifthYear	116400000	usd
CY2024Q3	us-gaap	Recorded Unconditional Purchase Obligation Due After Fifth Year RecordedUnconditionalPurchaseObligationDueAfterFifthYear	663200000	usd
CY2024	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
CY2024	nfg	Revenues Excluding Intersegment Revenues RevenuesExcludingIntersegmentRevenues	1944810000	usd
CY2024	nfg	Intersegment Revenues IntersegmentRevenues	0	usd
CY2024	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	8727000	usd
CY2024	us-gaap	Interest Expense InterestExpense	138695000	usd
CY2024	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	457026000	usd
CY2024	us-gaap	Asset Impairment Charges AssetImpairmentCharges	519129000	usd
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9742000	usd
CY2024	us-gaap	Net Income Loss NetIncomeLoss	77513000	usd
CY2024	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	942015000	usd
CY2024Q3	us-gaap	Assets Assets	8319770000	usd
CY2023	nfg	Revenues Excluding Intersegment Revenues RevenuesExcludingIntersegmentRevenues	2173771000	usd
CY2023	nfg	Intersegment Revenues IntersegmentRevenues	0	usd
CY2023	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	11479000	usd
CY2023	us-gaap	Interest Expense InterestExpense	131886000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	409573000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	164533000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	476866000	usd
CY2023	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	1123573000	usd
CY2023Q3	us-gaap	Assets Assets	8280260000	usd
CY2022	nfg	Revenues Excluding Intersegment Revenues RevenuesExcludingIntersegmentRevenues	2186046000	usd
CY2022	nfg	Intersegment Revenues IntersegmentRevenues	0	usd
CY2022	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	6111000	usd
CY2022	us-gaap	Interest Expense InterestExpense	130357000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	369790000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	116629000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	12736000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	566021000	usd
CY2022	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	829388000	usd
CY2022Q3	us-gaap	Assets Assets	7896262000	usd
CY2024Q3	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	7079903000	usd
CY2023Q3	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	6555088000	usd
CY2024Q3	us-gaap	Capitalized Costs Unproved Properties CapitalizedCostsUnprovedProperties	200986000	usd
CY2023Q3	us-gaap	Capitalized Costs Unproved Properties CapitalizedCostsUnprovedProperties	161097000	usd
CY2024Q3	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	7280889000	usd
CY2023Q3	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	6716185000	usd
CY2024Q3	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	5004299000	usd
CY2023Q3	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	4269959000	usd
CY2024Q3	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	2276590000	usd
CY2023Q3	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	2446226000	usd
CY2024Q3	us-gaap	Capitalized Costs Asset Retirement Costs CapitalizedCostsAssetRetirementCosts	175200000	usd
CY2023Q3	us-gaap	Capitalized Costs Asset Retirement Costs CapitalizedCostsAssetRetirementCosts	129200000	usd
CY2024	us-gaap	Acquisition Costs AcquisitionCosts	8136000	usd
CY2023	us-gaap	Acquisition Costs AcquisitionCosts	104858000	usd
CY2022	us-gaap	Acquisition Costs AcquisitionCosts	2072000	usd
CY2024	us-gaap	Development Costs DevelopmentCosts	46597000	usd
CY2023	us-gaap	Development Costs DevelopmentCosts	1821000	usd
CY2022	us-gaap	Development Costs DevelopmentCosts	185000	usd
CY2024	us-gaap	Exploration Costs ExplorationCosts	10813000	usd
CY2023	us-gaap	Exploration Costs ExplorationCosts	0	usd
CY2022	us-gaap	Exploration Costs ExplorationCosts	0	usd
CY2024	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	778000	usd
CY2023	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	usd
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	usd
CY2024	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	66324000	usd
CY2023	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	106679000	usd
CY2022	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	2257000	usd
CY2024	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	17069000	usd
CY2023	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	33190000	usd
CY2022	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	2491000	usd
CY2024	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	19526000	usd
CY2023	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	129061000	usd
CY2022	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	10665000	usd
CY2024	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	53519000	usd
CY2023	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	10055000	usd
CY2022	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	9631000	usd
CY2024	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	429151000	usd
CY2023	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	553469000	usd
CY2022	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	528684000	usd
CY2024	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	46017000	usd
CY2023	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	8363000	usd
CY2022	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	9768000	usd
CY2024	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	565282000	usd
CY2023	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	734138000	usd
CY2022	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties CostsIncurredAcquisitionOfOilAndGasProperties	561239000	usd
CY2024	nfg	Costs Incurred Exploration Costs Capitalized Interest CostsIncurredExplorationCostsCapitalizedInterest	100000	usd
CY2023	nfg	Costs Incurred Exploration Costs Capitalized Interest CostsIncurredExplorationCostsCapitalizedInterest	0	usd
CY2022	nfg	Costs Incurred Exploration Costs Capitalized Interest CostsIncurredExplorationCostsCapitalizedInterest	0	usd
CY2024	nfg	Costs Incurred Development Costs Capitalized Interest CostsIncurredDevelopmentCostsCapitalizedInterest	700000	usd
CY2023	nfg	Costs Incurred Development Costs Capitalized Interest CostsIncurredDevelopmentCostsCapitalizedInterest	100000	usd
CY2022	nfg	Costs Incurred Development Costs Capitalized Interest CostsIncurredDevelopmentCostsCapitalizedInterest	600000	usd
CY2024	nfg	Amount Spent For Developing Proved Undeveloped Reserves AmountSpentForDevelopingProvedUndevelopedReserves	305600000	usd
CY2023	nfg	Amount Spent For Developing Proved Undeveloped Reserves AmountSpentForDevelopingProvedUndevelopedReserves	342000000.0	usd
CY2022	nfg	Amount Spent For Developing Proved Undeveloped Reserves AmountSpentForDevelopingProvedUndevelopedReserves	154300000	usd
CY2024	us-gaap	Results Of Operations Sales Or Transfers To Entitys Other Operations ResultsOfOperationsSalesOrTransfersToEntitysOtherOperations	1557000	usd
CY2023	us-gaap	Results Of Operations Sales Or Transfers To Entitys Other Operations ResultsOfOperationsSalesOrTransfersToEntitysOtherOperations	1957000	usd
CY2022	us-gaap	Results Of Operations Sales Or Transfers To Entitys Other Operations ResultsOfOperationsSalesOrTransfersToEntitysOtherOperations	5696000	usd
CY2024	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	741076000	usd
CY2023	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	1038760000	usd
CY2022	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	1881680000	usd
CY2024	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	270927000	usd
CY2023	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	253555000	usd
CY2022	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	283914000	usd
CY2024	nfg	Results Of Operations Franchise Or Ad Valorem Taxes ResultsOfOperationsFranchiseOrAdValoremTaxes	13468000	usd
CY2023	nfg	Results Of Operations Franchise Or Ad Valorem Taxes ResultsOfOperationsFranchiseOrAdValoremTaxes	17532000	usd
CY2022	nfg	Results Of Operations Franchise Or Ad Valorem Taxes ResultsOfOperationsFranchiseOrAdValoremTaxes	25112000	usd
CY2024	nfg	Results Of Operations Purchased Emission Allowance Expense ResultsOfOperationsPurchasedEmissionAllowanceExpense	0	usd
CY2023	nfg	Results Of Operations Purchased Emission Allowance Expense ResultsOfOperationsPurchasedEmissionAllowanceExpense	0	usd
CY2022	nfg	Results Of Operations Purchased Emission Allowance Expense ResultsOfOperationsPurchasedEmissionAllowanceExpense	1305000	usd
CY2024	us-gaap	Results Of Operations Accretion Of Asset Retirement Obligations ResultsOfOperationsAccretionOfAssetRetirementObligations	5992000	usd
CY2023	us-gaap	Results Of Operations Accretion Of Asset Retirement Obligations ResultsOfOperationsAccretionOfAssetRetirementObligations	5673000	usd
CY2022	us-gaap	Results Of Operations Accretion Of Asset Retirement Obligations ResultsOfOperationsAccretionOfAssetRetirementObligations	7530000	usd
CY2024	nfg	Depreciation Depletion And Amortization Per Mcfe Of Production DepreciationDepletionAndAmortizationPerMcfeOfProduction	0.69	usd
CY2023	nfg	Depreciation Depletion And Amortization Per Mcfe Of Production DepreciationDepletionAndAmortizationPerMcfeOfProduction	0.63	usd
CY2022	nfg	Depreciation Depletion And Amortization Per Mcfe Of Production DepreciationDepletionAndAmortizationPerMcfeOfProduction	0.57	usd
CY2024	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	270648000	usd
CY2023	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	235694000	usd
CY2022	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	202418000	usd
CY2024	us-gaap	Results Of Operations Impairment Of Oil And Gas Properties ResultsOfOperationsImpairmentOfOilAndGasProperties	463692000	usd
CY2023	us-gaap	Results Of Operations Impairment Of Oil And Gas Properties ResultsOfOperationsImpairmentOfOilAndGasProperties	0	usd
CY2022	us-gaap	Results Of Operations Impairment Of Oil And Gas Properties ResultsOfOperationsImpairmentOfOilAndGasProperties	0	usd
CY2024	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	-76983000	usd
CY2023	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	145574000	usd
CY2022	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	368925000	usd
CY2024	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	-206668000	usd
CY2023	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	380732000	usd
CY2022	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	992476000	usd
CY2023	nfg	Results Of Operations Sales Revenue To Affiliated Enterprises ResultsOfOperationsSalesRevenueToAffiliatedEnterprises	0	usd
CY2024	nfg	Results Of Operations Sales Revenue To Affiliated Enterprises ResultsOfOperationsSalesRevenueToAffiliatedEnterprises	0	usd
CY2022	nfg	Results Of Operations Sales Revenue To Affiliated Enterprises ResultsOfOperationsSalesRevenueToAffiliatedEnterprises	0	usd
CY2023Q3	srt	Proved Undeveloped Reserve Volume ProvedUndevelopedReserveVolume	985000000000	bcf
CY2024Q3	srt	Proved Undeveloped Reserve Volume ProvedUndevelopedReserveVolume	1267000000000	bcf
CY2024	nfg	Proved Undeveloped Reserves As Percentage Of Total Proved Reserves ProvedUndevelopedReservesAsPercentageOfTotalProvedReserves	0.267
CY2023	nfg	Proved Undeveloped Reserves As Percentage Of Total Proved Reserves ProvedUndevelopedReservesAsPercentageOfTotalProvedReserves	0.217
CY2022Q3	srt	Proved Undeveloped Reserve Volume ProvedUndevelopedReserveVolume	858000000000	bcf
CY2023Q3	srt	Proved Undeveloped Reserve Volume ProvedUndevelopedReserveVolume	985000000000	bcf
CY2023	nfg	Proved Undeveloped Reserves As Percentage Of Total Proved Reserves ProvedUndevelopedReservesAsPercentageOfTotalProvedReserves	0.217
CY2022	nfg	Proved Undeveloped Reserves As Percentage Of Total Proved Reserves ProvedUndevelopedReservesAsPercentageOfTotalProvedReserves	0.206
CY2024Q3	nfg	Proved Undeveloped Reserves Increase ProvedUndevelopedReservesIncrease	282000000000	bcf
CY2024Q3	nfg	Proved Undeveloped Reserves Additions ProvedUndevelopedReservesAdditions	602000000000	bcf
CY2024Q3	nfg	Proved Undeveloped Reserves Upward Revisions ProvedUndevelopedReservesUpwardRevisions	76000000000	bcf
CY2024Q3	nfg	Proved Undeveloped Reserves Conversions To Developed Reserves ProvedUndevelopedReservesConversionsToDevelopedReserves	291000000000	bcf
CY2024Q3	nfg	Proved Undeveloped Reserves Removed ProvedUndevelopedReservesRemoved	105000000000	bcf
CY2024	nfg	Pud Well Locations Removed PUDWellLocationsRemoved	9	pudlocation
CY2023Q3	nfg	Proved Undeveloped Reserves Increase ProvedUndevelopedReservesIncrease	127000000000	bcf
CY2023Q3	nfg	Proved Undeveloped Reserves Additions ProvedUndevelopedReservesAdditions	554000000000	bcf
CY2023Q3	nfg	Proved Undeveloped Reserve Additions Previously Removed From Schedule ProvedUndevelopedReserveAdditionsPreviouslyRemovedFromSchedule	14000000000	bcf
CY2023	nfg	Pud Well Additions Previously Removed From Schedule PUDWellAdditionsPreviouslyRemovedFromSchedule	1	pudlocation
CY2023Q3	nfg	Proved Undeveloped Reserves Upward Revisions ProvedUndevelopedReservesUpwardRevisions	23000000000	bcf
CY2023Q3	nfg	Proved Undeveloped Reserves Conversions To Developed Reserves ProvedUndevelopedReservesConversionsToDevelopedReserves	402000000000	bcf
CY2023Q3	nfg	Proved Undeveloped Reserves Removed ProvedUndevelopedReservesRemoved	62000000000	bcf
CY2023	nfg	Pud Well Locations Removed PUDWellLocationsRemoved	7	pudlocation
CY2024	nfg	Capital Expenditures Related To Proved Undeveloped Reserves CapitalExpendituresRelatedToProvedUndevelopedReserves	306000000	usd
CY2024Q3	nfg	Proved Undeveloped Reserves Conversions To Developed Reserves ProvedUndevelopedReservesConversionsToDevelopedReserves	291000000000	bcf
CY2024	nfg	Conversion Of Undeveloped Proved Reserves To Developed Proved Reserves After Revisions Volume ConversionOfUndevelopedProvedReservesToDevelopedProvedReservesAfterRevisionsVolume	374000000000	bcf
CY2024Q3	nfg	Proved Undeveloped Reserves Percentage ProvedUndevelopedReservesPercentage	0.30
CY2023	nfg	Capital Expenditures Related To Proved Undeveloped Reserves CapitalExpendituresRelatedToProvedUndevelopedReserves	342000000	usd
CY2023Q3	nfg	Proved Undeveloped Reserves Conversions To Developed Reserves ProvedUndevelopedReservesConversionsToDevelopedReserves	402000000000	bcf
CY2023	nfg	Conversion Of Undeveloped Proved Reserves To Developed Proved Reserves After Revisions Volume ConversionOfUndevelopedProvedReservesToDevelopedProvedReservesAfterRevisionsVolume	440000000000	bcf
CY2023Q3	nfg	Proved Undeveloped Reserves Percentage ProvedUndevelopedReservesPercentage	0.47
CY2020Q3	nfg	Proved Undeveloped Reserves Percentage ProvedUndevelopedReservesPercentage	0.36
CY2021Q3	nfg	Proved Undeveloped Reserves Percentage ProvedUndevelopedReservesPercentage	0.34
CY2022Q3	nfg	Proved Undeveloped Reserves Percentage ProvedUndevelopedReservesPercentage	0.45
CY2023Q3	nfg	Proved Undeveloped Reserves Percentage ProvedUndevelopedReservesPercentage	0.47
CY2024Q3	nfg	Proved Undeveloped Reserves Percentage ProvedUndevelopedReservesPercentage	0.30
CY2024	nfg	Annual Discount For Estimated Timing Of Cash Flows AnnualDiscountForEstimatedTimingOfCashFlows	0.10
CY2024Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	8514126000	usd
CY2023Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	11947345000	usd
CY2022Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	19209099000	usd
CY2024Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	3672901000	usd
CY2023Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	3538389000	usd
CY2022Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	3138226000	usd
CY2024Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	1191708000	usd
CY2023Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	1095096000	usd
CY2022Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	781847000	usd
CY2024Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	826094000	usd
CY2023Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	1867457000	usd
CY2022Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	3876272000	usd
CY2024Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	2823423000	usd
CY2023Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	5446403000	usd
CY2022Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	11412754000	usd
CY2024Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	1486968000	usd
CY2023Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	2874295000	usd
CY2022Q3	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	5964424000	usd
CY2024Q3	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	1336455000	usd
CY2023Q3	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	2572108000	usd
CY2022Q3	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	5448330000	usd
CY2023Q3	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	2572108000	usd
CY2022Q3	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	5448330000	usd
CY2021Q3	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	2353572000	usd
CY2024	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	-456506000	usd
CY2023	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	-767487000	usd
CY2022	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	-1572402000	usd
CY2024	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-1829714000	usd
CY2023	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-3918392000	usd
CY2022	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	4132889000	usd
CY2024	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	-11007000	usd
CY2023	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	237057000	usd
CY2022	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	1355257000	usd
CY2024	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	32990000	usd
CY2023	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-222233000	usd
CY2022	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-32160000	usd
CY2024	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	usd
CY2023	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	34346000	usd
CY2022	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	usd
CY2024	srt	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	0	usd
CY2023	srt	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	0	usd
CY2022	srt	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	311308000	usd
CY2024	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	305602000	usd
CY2023	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	342024000	usd
CY2022	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	154253000	usd
CY2024	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	462075000	usd
CY2023	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	959728000	usd
CY2022	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-1180349000	usd
CY2024	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	19216000	usd
CY2023	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	33192000	usd
CY2022	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	3316000	usd
CY2024	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	241691000	usd
CY2023	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	425543000	usd
CY2022	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	545262000	usd
CY2024Q3	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	1336455000	usd
CY2023Q3	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	2572108000	usd
CY2022Q3	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	5448330000	usd
CY2024Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2024Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024	ecd	Insider Trd Policies Proc Adopted Flag InsiderTrdPoliciesProcAdoptedFlag	true

Files In Submission

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$NFG
NATIONAL FUEL GAS CO Stock $nfg

2024 Q4 Form 10-K Financial Statement

#000007014524000036 Filed on November 22, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NFG NATIONAL FUEL GAS CO Stock $nfg

2024 Q4 Form 10-K Financial Statement

#000007014524000036 Filed on November 22, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NFG
NATIONAL FUEL GAS CO Stock $nfg