$NFG
NATIONAL FUEL GAS CO Stock $nfg

$nfg Overview Financials Valuation SEC Filings Company Website

2018 Q1 Form 10-Q Financial Statement

#000007014518000009 Filed on May 04, 2018

Income Statement

Concept	2018 Q1	2017 Q1	2016 Q4
Revenue	$540.9M	$522.1M	$422.5M
YoY Change	3.61%	16.25%	12.61%
Cost Of Revenue	$176.6M	$148.0M	$70.20M
YoY Change	19.32%	81.37%	66.75%
Gross Profit	$364.3M	$374.1M	$352.3M
YoY Change	-2.62%	1.8%	5.76%
Gross Profit Margin	67.35%	71.66%	83.38%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$61.16M	$57.00M	$56.20M
YoY Change	7.29%	-10.87%	-20.35%
% of Gross Profit	16.79%	15.24%	15.95%
Operating Expenses	$369.3M	$352.1M	$250.4M
YoY Change	4.88%	-48.68%	-63.24%
Operating Profit	$171.6M	$170.0M	$172.1M
YoY Change	0.96%	-171.71%	-156.27%
Interest Expense	-$28.40M	-$29.40M	-$28.40M
YoY Change	-3.4%	-2.0%	-5.33%
% of Operating Profit	-16.55%	-17.3%	-16.5%
Other Income/Expense, Net	-$13.09M	$1.700M	$1.600M
YoY Change	-870.12%	-46.88%	-33.33%
Pretax Income	$130.1M	$142.3M	$145.3M
YoY Change	-8.53%	-153.94%	-143.59%
Income Tax	$38.27M	$52.97M	$56.43M
% Of Pretax Income	29.41%	37.24%	38.83%
Net Earnings	$91.85M	$89.28M	$88.91M
YoY Change	2.87%	-160.45%	-147.01%
Net Earnings / Revenue	16.98%	17.1%	21.04%
Basic Earnings Per Share	$1.07	$1.05	$1.04
Diluted Earnings Per Share	$1.06	$1.04	$1.04
COMMON SHARES
Basic Shares Outstanding	85.81M shares	85.33M shares	85.19M shares
Diluted Shares Outstanding	86.32M shares	86.01M shares	85.80M shares

Balance Sheet

Concept	2018 Q1	2017 Q1	2016 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$228.0M	$231.2M	$136.5M
YoY Change	-1.38%	146.74%	276.03%
Cash & Equivalents	$228.0M	$231.2M	$136.5M
Short-Term Investments
Other Short-Term Assets	$60.32M	$51.59M	$49.78M
YoY Change	16.94%	-9.04%	-24.74%
Inventory	$41.60M	$43.70M	$57.60M
Prepaid Expenses
Receivables	$198.9M	$171.2M	$161.0M
Other Receivables	$19.70M	$5.200M	$7.800M
Total Short-Term Assets	$593.0M	$556.9M	$467.7M
YoY Change	6.47%	47.92%	10.18%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.783B	$4.519B	$4.486B
YoY Change	5.84%	-1.16%	-8.12%
Goodwill	$5.476M	$5.476M	$5.476M
YoY Change	0.0%	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$123.0M	$117.3M	$114.7M
YoY Change	4.86%	12.46%	6.01%
Other Assets	$426.0K	$485.0K	$491.0K
YoY Change	-12.16%	208.92%	203.09%
Total Long-Term Assets	$538.8M	$728.7M	$707.9M
YoY Change	-26.06%	-14.51%	-19.84%
TOTAL ASSETS
Total Short-Term Assets	$593.0M	$556.9M	$467.7M
Total Long-Term Assets	$538.8M	$728.7M	$707.9M
Total Assets	$5.915B	$5.805B	$5.662B
YoY Change	1.89%	0.06%	-8.54%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$127.6M	$111.4M	$113.1M
YoY Change	14.55%	0.3%	-10.86%
Accrued Expenses	$33.67M	$33.17M	$35.95M
YoY Change	1.5%	37.97%	28.19%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change			-100.0%
Long-Term Debt Due	$0.00	$0.00	$0.00
YoY Change
Total Short-Term Liabilities	$379.9M	$325.9M	$306.2M
YoY Change	16.57%	-7.58%	-25.52%
LONG-TERM LIABILITIES
Long-Term Debt	$2.085B	$2.087B	$2.087B
YoY Change	-0.11%	0.11%	0.11%
Other Long-Term Liabilities	$1.048B	$903.0M	$896.6M
YoY Change	16.04%	0.79%	1.59%
Total Long-Term Liabilities	$1.530B	$1.740B	$1.700B
YoY Change	-12.05%	-0.04%	-9.68%
TOTAL LIABILITIES
Total Short-Term Liabilities	$379.9M	$325.9M	$306.2M
Total Long-Term Liabilities	$1.530B	$1.740B	$1.700B
Total Liabilities	$1.910B	$2.066B	$2.006B
YoY Change	-7.53%	-1.31%	-12.52%
SHAREHOLDERS EQUITY
Retained Earnings	$1.071B	$817.3M	$762.6M
YoY Change	31.03%	16.86%	-13.4%
Common Stock	$85.88M	$85.38M	$85.29M
YoY Change	0.59%	0.57%	0.65%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.919B	$1.651B	$1.569B
YoY Change
Total Liabilities & Shareholders Equity	$5.915B	$5.805B	$5.662B
YoY Change	1.89%	0.06%	-8.54%

Cashflow Statement

Concept	2018 Q1	2017 Q1	2016 Q4
OPERATING ACTIVITIES
Net Income	$91.85M	$89.28M	$88.91M
YoY Change	2.87%	-160.45%	-147.01%
Depreciation, Depletion And Amortization	$61.16M	$57.00M	$56.20M
YoY Change	7.29%	-10.87%	-20.35%
Cash From Operating Activities	$191.2M	$207.3M	$144.6M
YoY Change	-7.77%	4.33%	26.73%
INVESTING ACTIVITIES
Capital Expenditures	-$119.1M	-$102.1M	$106.1M
YoY Change	16.65%	-40.85%	-43.12%
Acquisitions
YoY Change
Other Investing Activities	$20.10M	$21.80M	$4.297M
YoY Change	-7.8%	-76.28%	-72.73%
Cash From Investing Activities	-$99.10M	-$80.30M	-$104.6M
YoY Change	23.41%	-0.5%	-45.41%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net			$0.00
YoY Change
Cash From Financing Activities	-31.20M	-32.30M	-33.50M
YoY Change	-3.41%	-46.79%	-11266.67%
NET CHANGE
Cash From Operating Activities	191.2M	207.3M	144.6M
Cash From Investing Activities	-99.10M	-80.30M	-104.6M
Cash From Financing Activities	-31.20M	-32.30M	-33.50M
Net Change In Cash	60.90M	94.70M	6.500M
YoY Change	-35.69%	65.27%	-108.42%
FREE CASH FLOW
Cash From Operating Activities	$191.2M	$207.3M	$144.6M
Capital Expenditures	-$119.1M	-$102.1M	$106.1M
Free Cash Flow	$310.3M	$309.4M	$38.55M
YoY Change	0.29%	-16.67%	-153.29%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
	dei	Document Period End Date DocumentPeriodEndDate	2018-03-31
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0000070145
CY2018Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	85927173	shares
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	NATIONAL FUEL GAS CO
	dei	Trading Symbol TradingSymbol	nfg
	nfg	After Tax Net Hedging Gains Losses In Accumulated Other Comprehensive Income Loss AfterTaxNetHedgingGainsLossesInAccumulatedOtherComprehensiveIncomeLoss	3800000	USD
CY2017Q1	nfg	Beginning Retained Earnings Unappropriated And Current Period Net Income Loss BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss	851925000	USD
	nfg	Beginning Retained Earnings Unappropriated And Current Period Net Income Loss BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss	854552000	USD
CY2018Q1	nfg	Beginning Retained Earnings Unappropriated And Current Period Net Income Loss BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss	1106580000	USD
	nfg	Beginning Retained Earnings Unappropriated And Current Period Net Income Loss BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss	1142170000	USD
	nfg	Cash Flow Hedge Gain Loss To Be Reclassified After Twelve Months CashFlowHedgeGainLossToBeReclassifiedAfterTwelveMonths	12200000	USD
	nfg	Cash Flow Hedge Gain Loss To Be Reclassified After Twelve Months After Tax CashFlowHedgeGainLossToBeReclassifiedAfterTwelveMonthsAfterTax	5400000	USD
	nfg	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months After Tax CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsAfterTax	-1600000	USD
CY2017Q3	nfg	Cost Of Removal Regulatory Liability CostOfRemovalRegulatoryLiability	204630000	USD
CY2018Q1	nfg	Cost Of Removal Regulatory Liability CostOfRemovalRegulatoryLiability	207711000	USD
	nfg	Decrease To Recoverable Future Taxes Impactof Change In Corporate Tax Rate DecreaseToRecoverableFutureTaxesImpactofChangeInCorporateTaxRate	65700000	USD
CY2017Q3	nfg	Fair Value Assets Liabilities Measured On Recurring Basis Net FairValueAssetsLiabilitiesMeasuredOnRecurringBasisNet	650637000	USD
CY2018Q1	nfg	Fair Value Assets Liabilities Measured On Recurring Basis Net FairValueAssetsLiabilitiesMeasuredOnRecurringBasisNet	290761000	USD
CY2017Q3	nfg	Fair Value Assets Measured On Recurring Basis Total FairValueAssetsMeasuredOnRecurringBasisTotal	651740000	USD
CY2018Q1	nfg	Fair Value Assets Measured On Recurring Basis Total FairValueAssetsMeasuredOnRecurringBasisTotal	302236000	USD
CY2017Q3	nfg	Fair Value Liabilities Measured On Recurring Basis Total FairValueLiabilitiesMeasuredOnRecurringBasisTotal	1103000	USD
CY2018Q1	nfg	Fair Value Liabilities Measured On Recurring Basis Total FairValueLiabilitiesMeasuredOnRecurringBasisTotal	11475000	USD
CY2018Q1	nfg	Full Cost Ceiling Exceeds Book Value Of Oil And Gas Properties FullCostCeilingExceedsBookValueOfOilAndGasProperties	502800000	USD
CY2018Q1	nfg	Full Cost Ceiling Test Discount Factor FullCostCeilingTestDiscountFactor	0.1
	nfg	Increase To Taxes Refundable To Customers Impact Of Changes In Corporate Tax Rate IncreaseToTaxesRefundableToCustomersImpactOfChangesInCorporateTaxRate	271000000	USD
CY2017Q3	nfg	Interest Payable On Long Term Debt InterestPayableOnLongTermDebt	35031000	USD
CY2018Q1	nfg	Interest Payable On Long Term Debt InterestPayableOnLongTermDebt	26435000	USD
	nfg	Offsetting Gain Loss On Hedged Item Attributable To Hedged Risk OffsettingGainLossOnHedgedItemAttributableToHedgedRisk	1034000	USD
CY2017Q4	nfg	Oiland Gas Producing Properties Purchaseand Sale Agreement Price OilandGasProducingPropertiesPurchaseandSaleAgreementPrice	43000000	USD
CY2017Q3	nfg	Other Current Assets Fair Values Of Firm Commitments OtherCurrentAssetsFairValuesOfFirmCommitments	1031000	USD
CY2018Q1	nfg	Other Current Assets Fair Values Of Firm Commitments OtherCurrentAssetsFairValuesOfFirmCommitments	1608000	USD
CY2017Q3	nfg	Other Investments Including Csv Life Insurance And Avail For Sale OtherInvestmentsIncludingCsvLifeInsuranceAndAvailForSale	125265000	USD
CY2018Q1	nfg	Other Investments Including Csv Life Insurance And Avail For Sale OtherInvestmentsIncludingCsvLifeInsuranceAndAvailForSale	123039000	USD
CY2018Q1	nfg	Project Costs ProjectCosts	75100000	USD
CY2018Q1	nfg	Recoverable Future Taxes RecoverableFutureTaxes	115514000	USD
	nfg	Reduction In Deferred Taxes Rate Regulated Activities Impact Of Change In Corporate Tax Rate ReductionInDeferredTaxesRateRegulatedActivitiesImpactOfChangeInCorporateTaxRate	336700000	USD
CY2018Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	28592000	USD
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.07
CY2017Q3	nfg	Taxes Refundable To Customers TaxesRefundableToCustomers	95739000	USD
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.37
CY2017Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	157554	shares
CY2018Q1	nfg	Taxes Refundable To Customers TaxesRefundableToCustomers	365091000	USD
CY2017Q3	nfg	Unamortized Debt Expense UnamortizedDebtExpense	1159000	USD
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	158211	shares
CY2018Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	685338	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	316159	shares
	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	67600000	USD
CY2016Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	129972000	USD
CY2017Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	106395000	USD
CY2017Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	231173000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	555530000	USD
CY2017Q3	nfg	Recoverable Future Taxes RecoverableFutureTaxes	181363000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-40919000	USD
CY2018Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-47760000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-327536000	USD
CY2017Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	796646000	USD
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-4100000	USD
CY2018Q1	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	4004199000	USD
CY2017	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	80900000	USD
CY2018Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	810126000	USD
CY2017Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	22526000	USD
CY2017Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	39355000	USD
CY2018Q1	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	39052000	USD
CY2018Q1	nfg	Unamortized Debt Expense UnamortizedDebtExpense	7861000	USD
CY2017Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	126443000	USD
CY2018Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	127585000	USD
CY2017Q3	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	22883000	USD
CY2018Q1	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	60059000	USD
CY2017Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	38673000	USD
CY2018Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	33672000	USD
CY2017Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5271486000	USD
CY2018Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5344134000	USD
CY2016Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5640000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-54859000	USD
CY2017Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-34091000	USD
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-30123000	USD
CY2018Q1	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	106481000	USD
CY2017Q3	us-gaap	Assets Assets	6103320000	USD
CY2018Q1	us-gaap	Assets Assets	5914573000	USD
CY2017Q3	us-gaap	Assets Current AssetsCurrent	818280000	USD
CY2018Q1	us-gaap	Assets Current AssetsCurrent	592993000	USD
CY2017Q3	us-gaap	Assets Noncurrent AssetsNoncurrent	610966000	USD
CY2018Q1	us-gaap	Assets Noncurrent AssetsNoncurrent	538783000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	36932000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	51939000	USD
CY2017Q3	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	3787416000	USD
CY2018Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	227994000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	527978000	USD
CY2018Q1	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	196448000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	101201000	USD
CY2017Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
CY2018Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
CY2017Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.405
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.810
CY2018Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.415
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.830
CY2017Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2018Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2017Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2018Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2017Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	85543125	shares
CY2018Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	85881897	shares
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CY2018Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	85881897	shares
CY2017Q3	us-gaap	Common Stock Value CommonStockValue	85543000	USD
CY2018Q1	us-gaap	Common Stock Value CommonStockValue	85882000	USD
CY2017Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	110052000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	149740000	USD
CY2018Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	85006000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	272864000	USD
CY2017Q1	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	147971000	USD
	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	218214000	USD
CY2018Q1	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	176608000	USD
	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	270642000	USD
CY2018Q1	us-gaap	Credit Risk Derivative Assets At Fair Value CreditRiskDerivativeAssetsAtFairValue	16800000	USD
CY2018Q1	us-gaap	Credit Risk Derivative Liabilities At Fair Value CreditRiskDerivativeLiabilitiesAtFairValue	8500000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	31900000	USD
CY2017Q3	us-gaap	Customer Advances Current CustomerAdvancesCurrent	15701000	USD
CY2018Q1	us-gaap	Customer Advances Current CustomerAdvancesCurrent	154000	USD
CY2017Q3	us-gaap	Customer Deposits Current CustomerDepositsCurrent	20372000	USD
CY2018Q1	us-gaap	Customer Deposits Current CustomerDepositsCurrent	18973000	USD
CY2017Q3	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	2523639000	USD
CY2018Q1	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	2169067000	USD
CY2018Q1	us-gaap	Debt Instrument Repurchase Amount DebtInstrumentRepurchaseAmount	307000000	USD
CY2017Q3	us-gaap	Deferred Costs DeferredCosts	30047000	USD
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	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	63781000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-62459000	USD
CY2017Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	891287000	USD
CY2018Q1	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	482682000	USD
CY2017Q3	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	56370000	USD
CY2018Q1	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	59586000	USD
CY2017Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	56999000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	113194000	USD
CY2018Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	61155000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	116985000	USD
CY2017Q3	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	1103000	USD
CY2018Q1	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	11475000	USD
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.06
CY2017Q3	us-gaap	Goodwill Goodwill	5476000	USD
CY2017Q3	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	36111000	USD
CY2018Q1	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	18144000	USD
CY2017Q1	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	10472000	USD
	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	41189000	USD
CY2018Q1	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-3199000	USD
	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	9349000	USD
CY2017Q1	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	0	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-100000	USD
CY2018Q1	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	335000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-98000	USD
CY2017Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	34577000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	69120000	USD
CY2018Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	35641000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	71231000	USD
CY2017Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	35500000	USD
CY2018Q1	us-gaap	Dividends Payable Current DividendsPayableCurrent	35641000	USD
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.05
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.09
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.07
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.39
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.04
CY2018Q1	us-gaap	Effect On Future Cash Flows Amount EffectOnFutureCashFlowsAmount	7500000	USD
CY2017Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.372
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.380
CY2018Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.294
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.174
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.245
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.245
CY2017Q3	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	35689000	USD
CY2018Q1	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	6842000	USD
	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	-1034000	USD
CY2018Q1	us-gaap	Goodwill Goodwill	5476000	USD
CY2017Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	142255000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	287594000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	130116000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	247494000	USD
CY2017Q1	us-gaap	Income Tax Effects Allocated Directly To Equity Cumulative Effect Of Change In Accounting Principle IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple	0	USD
	us-gaap	Income Tax Effects Allocated Directly To Equity Cumulative Effect Of Change In Accounting Principle IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple	31916000	USD
CY2018Q1	us-gaap	Income Tax Effects Allocated Directly To Equity Cumulative Effect Of Change In Accounting Principle IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple	0	USD
	us-gaap	Income Tax Effects Allocated Directly To Equity Cumulative Effect Of Change In Accounting Principle IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple	0	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-28004000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38269000	USD
	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	287000	USD
CY2017Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	52971000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	109403000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-43007000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	4000000	USD
	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	107000000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	13997000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	10838000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	44690000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	37646000	USD
	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	1916000	USD
	us-gaap	Increase Decrease In Customer Advances IncreaseDecreaseInCustomerAdvances	-14462000	USD
	us-gaap	Increase Decrease In Customer Advances IncreaseDecreaseInCustomerAdvances	-15547000	USD
	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	1493000	USD
	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	-1399000	USD
	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	2241000	USD
	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	-4197000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-24476000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	5
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-7769000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	8819000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	32000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	9541000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	202000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-5767000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	92155000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	123954000	USD
	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-71000	USD
	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	12083000	USD
CY2017Q1	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	28913000	USD
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	58016000	USD
CY2018Q1	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	27148000	USD
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	55235000	USD
CY2017Q1	us-gaap	Interest Expense Other InterestExpenseOther	924000	USD
	us-gaap	Interest Expense Other InterestExpenseOther	1834000	USD
CY2018Q1	us-gaap	Interest Expense Other InterestExpenseOther	1233000	USD
	us-gaap	Interest Expense Other InterestExpenseOther	1736000	USD
CY2017Q1	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	391000	USD
	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	1991000	USD
CY2018Q1	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	1025000	USD
	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	3275000	USD
CY2017Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	33926000	USD
CY2018Q1	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	34769000	USD
CY2017Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6103320000	USD
CY2018Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5914573000	USD
CY2017Q3	us-gaap	Liabilities Current LiabilitiesCurrent	646039000	USD
CY2018Q1	us-gaap	Liabilities Current LiabilitiesCurrent	379895000	USD
CY2017Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1669865000	USD
CY2018Q1	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1530479000	USD
CY2017Q3	us-gaap	Long Term Debt LongTermDebt	2383681000	USD
CY2018Q1	us-gaap	Long Term Debt LongTermDebt	2085012000	USD
CY2017Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	300000000	USD
CY2018Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2017Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2083681000	USD
CY2018Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2085012000	USD
CY2018Q1	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	7100000	USD
CY2017Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	1741000	USD
CY2018Q1	us-gaap	Margin Deposit Assets MarginDepositAssets	3657000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-65787000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-375247000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-184902000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-239055000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	351890000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	286766000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	89284000	USD
	us-gaap	Net Income Loss NetIncomeLoss	178191000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	91847000	USD
	us-gaap	Net Income Loss NetIncomeLoss	290501000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-12662000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	35351000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-49491000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-3220000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	843000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-10061000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-28582000	USD
CY2017Q1	us-gaap	Operating Expenses OperatingExpenses	352118000	USD
	us-gaap	Operating Expenses OperatingExpenses	602479000	USD
CY2018Q1	us-gaap	Operating Expenses OperatingExpenses	384203000	USD
	us-gaap	Operating Expenses OperatingExpenses	661863000	USD
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	169957000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	342097000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	156702000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	298698000	USD
CY2017Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	111889000	USD
CY2018Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	147549000	USD
CY2017Q3	us-gaap	Other Assets Current OtherAssetsCurrent	51505000	USD
CY2018Q1	us-gaap	Other Assets Current OtherAssetsCurrent	60324000	USD
CY2017Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	742000	USD
CY2018Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	426000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	26826000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-4162000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-9489000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	20768000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-28451000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6841000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-17637000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	741000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	430000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	272000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	158000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	10472000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	41189000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-3199000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	9349000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	4414000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	17369000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-551000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	4646000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	14583000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-21040000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	44097000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-8404000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-10945000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	208231000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	1726000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-12582000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-18081000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	18352000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-3699000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-3519000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-5824000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-678000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-722000	USD
CY2017Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	645000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	300000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-252000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-317000	USD
CY2017Q3	us-gaap	Other Deferred Credits Noncurrent OtherDeferredCreditsNoncurrent	109019000	USD
CY2018Q1	us-gaap	Other Deferred Credits Noncurrent OtherDeferredCreditsNoncurrent	109794000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-7713000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-8052000	USD
CY2017Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1744000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	3356000	USD
CY2018Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	770000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	2492000	USD
CY2017Q3	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	10927000	USD
CY2018Q1	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	6208000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3225000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-5355000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	69017000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	71091000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	261720000	USD
CY2017Q3	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	149079000	USD
CY2018Q1	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	133852000	USD
CY2017Q3	us-gaap	Prepaid Taxes PrepaidTaxes	13974000	USD
CY2018Q1	us-gaap	Prepaid Taxes PrepaidTaxes	22482000	USD
	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	3230000	USD
	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	2891000	USD
	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	26554000	USD
	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	17310000	USD
CY2017Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	9945560000	USD
CY2018Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	10126931000	USD
CY2017Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4674074000	USD
CY2018Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4782797000	USD
CY2017Q3	us-gaap	Receivables Net Current ReceivablesNetCurrent	112383000	USD
CY2018Q1	us-gaap	Receivables Net Current ReceivablesNetCurrent	198922000	USD
CY2017Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	6058000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	24289000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	5632000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	7862000	USD
CY2018Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-2648000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	4975000	USD
CY2017Q3	us-gaap	Refundable Gas Costs RefundableGasCosts	0	USD
CY2018Q1	us-gaap	Refundable Gas Costs RefundableGasCosts	12083000	USD
CY2017Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	15884000	USD
CY2018Q1	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	10373000	USD
CY2017Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	174433000	USD
CY2018Q1	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	171902000	USD
CY2017Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	34059000	USD
CY2018Q1	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	41409000	USD
CY2017Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	113716000	USD
CY2018Q1	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	124868000	USD
	us-gaap	Remaining Recovery Period Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided1 RemainingRecoveryPeriodOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided1	P4Y
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	307047000	USD
CY2016Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	676361000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	762641000	USD
CY2017Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	817348000	USD
CY2017Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	851669000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1014733000	USD
CY2018Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1070939000	USD
CY2017Q1	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	522075000	USD
	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	944576000	USD
CY2018Q1	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	540905000	USD
	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	960561000	USD
CY2017Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
CY2018Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	109535	shares
	us-gaap	Stock Issued During Period Shares Employee Benefit Plan StockIssuedDuringPeriodSharesEmployeeBenefitPlan	55280	shares
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	64085	shares
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	51574	shares
CY2017Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1703735000	USD
CY2018Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1919187000	USD
CY2017Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	22542000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	42921000	USD
CY2018Q1	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	22802000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	43650000	USD
	us-gaap	Unrealized Gain Loss On Price Risk Cash Flow Derivatives Before Tax UnrealizedGainLossOnPriceRiskCashFlowDerivativesBeforeTax	8100000	USD
CY2017Q3	us-gaap	Unrecovered Costs For Purchased Gas Amount UnrecoveredCostsForPurchasedGasAmount	4623000	USD
CY2018Q1	us-gaap	Unrecovered Costs For Purchased Gas Amount UnrecoveredCostsForPurchasedGasAmount	426000	USD
CY2017Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	86006614	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	85897282	shares
CY2018Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	86323636	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	86318892	shares
CY2017Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	85334887	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	85261575	shares
CY2018Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	85809233	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	85718779	shares

Files In Submission

Name	View Source	Status
0000070145-18-000009-index-headers.html	Edgar Link	pending
0000070145-18-000009-index.html	Edgar Link	pending
0000070145-18-000009.txt	Edgar Link	pending
0000070145-18-000009-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
nfg-20180331.xml	Edgar Link	completed
nfg-20180331.xsd	Edgar Link	pending
nfg-20180331_cal.xml	Edgar Link	unprocessable
nfg-20180331_def.xml	Edgar Link	unprocessable
nfg-20180331_lab.xml	Edgar Link	unprocessable
nfg-20180331_pre.xml	Edgar Link	unprocessable
nfg-3312018x10q.htm	Edgar Link	pending
nfg-3312018xexhibit12.htm	Edgar Link	pending
nfg-3312018xexhibit311.htm	Edgar Link	pending
nfg-3312018xexhibit312.htm	Edgar Link	pending
nfg-3312018xexhibit32.htm	Edgar Link	pending
nfg-3312018xexhibit99.htm	Edgar Link	pending
R1.htm	Edgar Link	pending
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R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$NFG
NATIONAL FUEL GAS CO Stock $nfg

2018 Q1 Form 10-Q Financial Statement

#000007014518000009 Filed on May 04, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NFG NATIONAL FUEL GAS CO Stock $nfg

2018 Q1 Form 10-Q Financial Statement

#000007014518000009 Filed on May 04, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NFG
NATIONAL FUEL GAS CO Stock $nfg