$NFG
NATIONAL FUEL GAS CO Stock $nfg

$nfg Overview Financials Valuation SEC Filings Company Website

2017 Q3 Form 10-Q Financial Statement

#000007014517000048 Filed on August 04, 2017

Income Statement

Concept	2017 Q3	2017 Q2	2016 Q3
Revenue	$286.9M	$348.4M	$292.5M
YoY Change	-1.9%	3.8%	-2.86%
Cost Of Revenue	$10.90M	$46.10M	$800.0K
YoY Change	1262.5%	96.17%	-84.91%
Gross Profit	$276.0M	$302.3M	$291.7M
YoY Change	-5.38%	-3.14%	-1.39%
Gross Profit Margin	96.19%	86.78%	99.73%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$55.40M	$55.62M	$56.10M
YoY Change	-1.25%	-5.42%	-20.87%
% of Gross Profit	20.07%	18.4%	19.23%
Operating Expenses	$147.7M	$225.0M	$177.6M
YoY Change	-16.84%	-22.53%	-13.49%
Operating Profit	$87.40M	$123.4M	$81.24M
YoY Change	7.57%	173.14%	-124.87%
Interest Expense	-$32.80M	-$29.20M	-$27.50M
YoY Change	19.27%	-1.68%	2.23%
% of Operating Profit	-37.53%	-23.67%	-33.85%
Other Income/Expense, Net	-$34.50M	$1.400M	$2.900M
YoY Change	-1289.66%	-6.67%	-14.71%
Pretax Income	$61.10M	$95.51M	$56.60M
YoY Change	7.95%	460.94%	-116.16%
Income Tax	$15.50M	$35.79M	$19.10M
% Of Pretax Income	25.37%	37.48%	33.75%
Net Earnings	$45.58M	$59.71M	$37.55M
YoY Change	21.37%	620.66%	-120.01%
Net Earnings / Revenue	15.88%	17.14%	12.84%
Basic Earnings Per Share	$0.53	$0.70	$0.44
Diluted Earnings Per Share	$0.53	$0.69	$0.44
COMMON SHARES
Basic Shares Outstanding	85.51M shares	85.42M shares	84.99M shares
Diluted Shares Outstanding		86.06M shares

Balance Sheet

Concept	2017 Q3	2017 Q2	2016 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$555.5M	$285.3M	$130.0M
YoY Change	327.31%	170.17%	14.44%
Cash & Equivalents	$555.5M	$285.3M	$130.0M
Short-Term Investments
Other Short-Term Assets	$51.51M	$50.85M	$59.35M
YoY Change	-13.22%	7.92%	-2.16%
Inventory	$69.60M	$52.50M	$68.20M
Prepaid Expenses
Receivables	$112.4M	$127.9M	$133.2M
Other Receivables	$9.700M	$9.600M	$15.70M
Total Short-Term Assets	$818.3M	$542.2M	$413.0M
YoY Change	98.12%	50.14%	9.91%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.674B	$4.584B	$4.454B
YoY Change	4.93%	3.05%	-16.46%
Goodwill	$5.476M	$5.476M	$5.476M
YoY Change	0.0%	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$125.3M	$126.5M	$110.7M
YoY Change	13.19%	13.55%	19.03%
Other Assets	$742.0K	$479.0K	$604.0K
YoY Change	22.85%	312.93%	261.68%
Total Long-Term Assets	$611.0M	$741.8M	$768.9M
YoY Change	-20.54%	1.3%	-10.31%
TOTAL ASSETS
Total Short-Term Assets	$818.3M	$542.2M	$413.0M
Total Long-Term Assets	$611.0M	$741.8M	$768.9M
Total Assets	$6.103B	$5.868B	$5.636B
YoY Change	8.28%	5.89%	-14.14%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$126.4M	$98.84M	$108.1M
YoY Change	17.02%	14.29%	-40.1%
Accrued Expenses	$111.9M	$34.18M	$32.91M
YoY Change	240.0%	37.58%	7.18%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$300.0M	$300.0M	$0.00
YoY Change
Total Short-Term Liabilities	$646.0M	$602.1M	$303.7M
YoY Change	112.7%	117.9%	-31.92%
LONG-TERM LIABILITIES
Long-Term Debt	$2.084B	$1.788B	$2.086B
YoY Change	-0.12%	-14.28%	0.11%
Other Long-Term Liabilities	$778.6M	$911.8M	$895.6M
YoY Change	-13.06%	8.08%	2.78%
Total Long-Term Liabilities	$1.670B	$1.793B	$1.719B
YoY Change	-2.88%	8.59%	-14.43%
TOTAL LIABILITIES
Total Short-Term Liabilities	$646.0M	$602.1M	$303.7M
Total Long-Term Liabilities	$1.670B	$1.793B	$1.719B
Total Liabilities	$2.316B	$2.396B	$2.023B
YoY Change	14.47%	24.26%	-17.61%
SHAREHOLDERS EQUITY
Retained Earnings	$851.7M	$841.6M	$676.4M
YoY Change	25.92%	25.0%	-38.69%
Common Stock	$85.54M	$85.47M	$85.12M
YoY Change	0.5%	0.61%	0.62%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.704B	$1.684B	$1.527B
YoY Change
Total Liabilities & Shareholders Equity	$6.103B	$5.868B	$5.636B
YoY Change	8.28%	5.89%	-14.14%

Cashflow Statement

Concept	2017 Q3	2017 Q2	2016 Q3
OPERATING ACTIVITIES
Net Income	$45.58M	$59.71M	$37.55M
YoY Change	21.37%	620.66%	-120.01%
Depreciation, Depletion And Amortization	$55.40M	$55.62M	$56.10M
YoY Change	-1.25%	-5.42%	-20.87%
Cash From Operating Activities	$133.4M	$199.2M	$129.0M
YoY Change	3.41%	35.33%	-8.51%
INVESTING ACTIVITIES
Capital Expenditures	-$135.5M	-$106.6M	-$99.80M
YoY Change	35.77%	-13.19%	-66.64%
Acquisitions
YoY Change
Other Investing Activities	$11.40M	-$6.900M	$24.00M
YoY Change	-52.5%	-139.66%	-536.36%
Cash From Investing Activities	-$124.2M	-$113.5M	-$75.80M
YoY Change	63.85%	7.69%	-75.13%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	261.3M	-31.60M	-28.80M
YoY Change	-1007.29%	5.69%	-11.66%
NET CHANGE
Cash From Operating Activities	133.4M	199.2M	129.0M
Cash From Investing Activities	-124.2M	-113.5M	-75.80M
Cash From Financing Activities	261.3M	-31.60M	-28.80M
Net Change In Cash	270.5M	54.10M	24.40M
YoY Change	1008.61%	354.62%	-112.42%
FREE CASH FLOW
Cash From Operating Activities	$133.4M	$199.2M	$129.0M
Capital Expenditures	-$135.5M	-$106.6M	-$99.80M
Free Cash Flow	$268.9M	$305.8M	$228.8M
YoY Change	17.53%	13.26%	-48.02%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
	dei	Document Period End Date DocumentPeriodEndDate	2017-06-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0000070145
	nfg	Impairmentof Oiland Gas Producing Properties ImpairmentofOilandGasProducingProperties	0	USD
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	157638	shares
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	163000	USD
CY2017Q2	nfg	Other Investments Including Csv Life Insurance And Avail For Sale OtherInvestmentsIncludingCsvLifeInsuranceAndAvailForSale	126485000	USD
CY2017Q2	nfg	Project Costs ProjectCosts	73700000	USD
	nfg	Impairmentof Oiland Gas Producing Properties ImpairmentofOilandGasProducingProperties	915552000	USD
	nfg	Recommended Costof Equity RecommendedCostofEquity	0.086
CY2017Q2	nfg	Impairmentof Oiland Gas Producing Properties ImpairmentofOilandGasProducingProperties	0	USD
	nfg	Recommended Equity Ratio RecommendedEquityRatio	0.423
	nfg	Recommendedrateincreasedecreaseamount Recommendedrateincreasedecreaseamount	8500000	USD
CY2017Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	85507508	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	36100000	USD
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	nfg	Beginning Retained Earnings Unappropriated And Current Period Net Income Loss BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss	774690000	USD
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	nfg	Beginning Retained Earnings Unappropriated And Current Period Net Income Loss BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss	914267000	USD
	nfg	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months After Tax CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonthsAfterTax	22900000	USD
CY2016Q3	nfg	Cost Of Removal Regulatory Liability CostOfRemovalRegulatoryLiability	193424000	USD
CY2017Q2	nfg	Cost Of Removal Regulatory Liability CostOfRemovalRegulatoryLiability	199739000	USD
CY2016Q3	nfg	Fair Value Assets Liabilities Measured On Recurring Basis Net FairValueAssetsLiabilitiesMeasuredOnRecurringBasisNet	299676000	USD
CY2017Q2	nfg	Fair Value Assets Liabilities Measured On Recurring Basis Net FairValueAssetsLiabilitiesMeasuredOnRecurringBasisNet	407490000	USD
CY2016Q3	nfg	Fair Value Assets Measured On Recurring Basis Total FairValueAssetsMeasuredOnRecurringBasisTotal	301138000	USD
CY2017Q2	nfg	Fair Value Assets Measured On Recurring Basis Total FairValueAssetsMeasuredOnRecurringBasisTotal	408412000	USD
CY2016Q3	nfg	Fair Value Liabilities Measured On Recurring Basis Total FairValueLiabilitiesMeasuredOnRecurringBasisTotal	1462000	USD
CY2017Q2	nfg	Fair Value Liabilities Measured On Recurring Basis Total FairValueLiabilitiesMeasuredOnRecurringBasisTotal	922000	USD
CY2017Q2	nfg	Full Cost Ceiling Exceeds Book Value Of Oil And Gas Properties FullCostCeilingExceedsBookValueOfOilAndGasProperties	304800000	USD
CY2017Q2	nfg	Full Cost Ceiling Test Discount Factor FullCostCeilingTestDiscountFactor	0.1
CY2016Q2	nfg	Impairmentof Oiland Gas Producing Properties ImpairmentofOilandGasProducingProperties	82658000	USD
	nfg	Income From Continuing Operations Before Income Taxes IncomeFromContinuingOperationsBeforeIncomeTaxes	-580412000	USD
	nfg	Income From Continuing Operations Before Income Taxes IncomeFromContinuingOperationsBeforeIncomeTaxes	382971000	USD
	nfg	Income Tax Expense Benefit Including Deferred Investment Tax Credit IncomeTaxExpenseBenefitIncludingDeferredInvestmentTaxCredit	-251902000	USD
	nfg	Income Tax Expense Benefit Including Deferred Investment Tax Credit IncomeTaxExpenseBenefitIncludingDeferredInvestmentTaxCredit	145065000	USD
CY2016Q3	nfg	Interest Payable On Long Term Debt InterestPayableOnLongTermDebt	34900000	USD
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	nfg	Offsetting Gain Loss On Hedged Item Attributable To Hedged Risk OffsettingGainLossOnHedgedItemAttributableToHedgedRisk	-1744000	USD
CY2016Q3	nfg	Other Current Assets Fair Values Of Firm Commitments OtherCurrentAssetsFairValuesOfFirmCommitments	3962000	USD
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CY2016Q3	nfg	Other Investments Including Csv Life Insurance And Avail For Sale OtherInvestmentsIncludingCsvLifeInsuranceAndAvailForSale	110664000	USD
CY2016Q3	nfg	Recoverable Future Taxes RecoverableFutureTaxes	177261000	USD
CY2017Q2	nfg	Recoverable Future Taxes RecoverableFutureTaxes	182469000	USD
CY2016Q3	nfg	Taxes Refundable To Customers TaxesRefundableToCustomers	93318000	USD
CY2017Q2	nfg	Taxes Refundable To Customers TaxesRefundableToCustomers	93321000	USD
CY2016Q3	nfg	Unamortized Debt Expense UnamortizedDebtExpense	1688000	USD
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	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	414092	shares
CY2017Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	172500	shares
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	47508000	USD
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CY2016Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	7739000	USD
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CY2016Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	771164000	USD
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CY2016Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	21109000	USD
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CY2016Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	112330000	USD
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CY2016Q3	us-gaap	Assets Assets	5636387000	USD
CY2017Q2	us-gaap	Assets Assets	5867507000	USD
CY2016Q3	us-gaap	Assets Current AssetsCurrent	413031000	USD
CY2017Q2	us-gaap	Assets Current AssetsCurrent	542180000	USD
CY2016Q3	us-gaap	Assets Noncurrent AssetsNoncurrent	768874000	USD
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	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	44380000	USD
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CY2016	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	135300000	USD
	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	100600000	USD
CY2015Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	113596000	USD
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	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-8029000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	155353000	USD
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CY2017Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	60501000	USD
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CY2017Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	85467963	shares
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	39300000	USD
CY2016Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	39700000	USD
CY2017Q2	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	41000000	USD
CY2016Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
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CY2016Q3	us-gaap	Common Stock Value CommonStockValue	85119000	USD
CY2016Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-66161000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-414143000	USD
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CY2016Q2	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	23477000	USD
	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	147168000	USD
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	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	264349000	USD
CY2017Q2	us-gaap	Credit Risk Derivative Assets At Fair Value CreditRiskDerivativeAssetsAtFairValue	42500000	USD
CY2017Q2	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	31900000	USD
	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-686000	USD
	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	29832000	USD
	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	18293000	USD
	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	10290000	USD
CY2016Q3	us-gaap	Customer Advances Current CustomerAdvancesCurrent	14762000	USD
CY2017Q2	us-gaap	Customer Advances Current CustomerAdvancesCurrent	224000	USD
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CY2016Q3	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	2255562000	USD
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CY2016Q3	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	17649000	USD
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	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	193300000	USD
CY2017Q2	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	55617000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	168812000	USD
CY2016Q3	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	1560000	USD
CY2017Q2	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	922000	USD
CY2016Q3	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	113804000	USD
CY2017Q2	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	63036000	USD
CY2016Q2	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	58373000	USD
	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	176779000	USD
CY2017Q2	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	18452000	USD
	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	59641000	USD
CY2016Q2	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	87000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	255000	USD
CY2017Q2	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	1040000	USD
	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	933000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	940000	USD
CY2016Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	34404000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	101409000	USD
CY2017Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	35469000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	104590000	USD
CY2016Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	34473000	USD
CY2017Q2	us-gaap	Dividends Payable Current DividendsPayableCurrent	35469000	USD
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.10
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.87
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.79
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.87
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.77
CY2017Q2	us-gaap	Effect On Future Cash Flows Amount EffectOnFutureCashFlowsAmount	49800000	USD
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2016Q3	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	34332000	USD
CY2017Q2	us-gaap	Energy Related Inventory Gas Stored Underground EnergyRelatedInventoryGasStoredUnderground	17793000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	1786000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	1786000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	0	USD
	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	1744000	USD
CY2016Q3	us-gaap	Goodwill Goodwill	5476000	USD
CY2017Q2	us-gaap	Goodwill Goodwill	5476000	USD
CY2016Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	17026000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-580151000	USD
CY2017Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	95506000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	383101000	USD
CY2016Q2	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
CY2017Q2	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
CY2016Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8740000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-251641000	USD
CY2017Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35792000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	145195000	USD
	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	5510000	USD
	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	11205000	USD
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-203144000	USD
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	134040000	USD
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-43248000	USD
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	22230000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-53687000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	5046000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	3375000	USD
	us-gaap	Increase Decrease In Deferred Gas Cost IncreaseDecreaseInDeferredGasCost	1317000	USD
	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	-396000	USD
	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	1503000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	25423000	USD
	us-gaap	Increase Decrease In Customer Advances IncreaseDecreaseInCustomerAdvances	-16198000	USD
	us-gaap	Increase Decrease In Customer Advances IncreaseDecreaseInCustomerAdvances	-14538000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-15683000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-15699000	USD
	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	-8116000	USD
	us-gaap	Increase Decrease In Margin Deposits Outstanding IncreaseDecreaseInMarginDepositsOutstanding	658000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-15334000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-8502000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-3775000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	3548000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-8152000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	5638000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	7756000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	15885000	USD
	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-21337000	USD
	us-gaap	Increase Decrease In Regulatory Clause Revenue IncreaseDecreaseInRegulatoryClauseRevenue	-6467000	USD
CY2016Q2	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	28897000	USD
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	88263000	USD
CY2017Q2	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	29225000	USD
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	87241000	USD
CY2016Q2	us-gaap	Interest Expense Other InterestExpenseOther	1321000	USD
	us-gaap	Interest Expense Other InterestExpenseOther	3938000	USD
CY2017Q2	us-gaap	Interest Expense Other InterestExpenseOther	846000	USD
	us-gaap	Interest Expense Other InterestExpenseOther	2680000	USD
CY2016Q2	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	564000	USD
	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	2640000	USD
CY2017Q2	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	853000	USD
	us-gaap	Interest Income Domestic Deposits InterestIncomeDomesticDeposits	2844000	USD
CY2016Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	33866000	USD
CY2017Q2	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	34706000	USD
	us-gaap	Investment Tax Credit InvestmentTaxCredit	-261000	USD
	us-gaap	Investment Tax Credit InvestmentTaxCredit	-130000	USD
CY2016Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5636387000	USD
CY2017Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5867507000	USD
CY2016Q3	us-gaap	Liabilities Current LiabilitiesCurrent	303737000	USD
CY2017Q2	us-gaap	Liabilities Current LiabilitiesCurrent	602135000	USD
CY2016Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1719394000	USD
CY2017Q2	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1793370000	USD
CY2016Q3	us-gaap	Long Term Debt LongTermDebt	2086252000	USD
CY2017Q2	us-gaap	Long Term Debt LongTermDebt	2087954000	USD
CY2016Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2017Q2	us-gaap	Long Term Debt Current LongTermDebtCurrent	300000000	USD
CY2016Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2086252000	USD
CY2017Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1787954000	USD
CY2017Q2	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	3200000	USD
CY2016Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	1484000	USD
CY2017Q2	us-gaap	Margin Deposit Assets MarginDepositAssets	2142000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-90275000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-97371000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-377709000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-298406000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	459955000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	551130000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	8286000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-328510000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	59714000	USD
	us-gaap	Net Income Loss NetIncomeLoss	237906000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	5
CY2016Q2	us-gaap	Operating Expenses OperatingExpenses	290456000	USD
	us-gaap	Operating Expenses OperatingExpenses	1657706000	USD
CY2017Q2	us-gaap	Operating Expenses OperatingExpenses	225014000	USD
	us-gaap	Operating Expenses OperatingExpenses	827494000	USD
CY2016Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	45161000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-497763000	USD
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	123354000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	465450000	USD
CY2016Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	74430000	USD
CY2017Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	107101000	USD
CY2016Q3	us-gaap	Other Assets Current OtherAssetsCurrent	59354000	USD
CY2017Q2	us-gaap	Other Assets Current OtherAssetsCurrent	50852000	USD
CY2016Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	604000	USD
CY2017Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	479000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-40588000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	23251000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	11546000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	7385000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-128360000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-148656000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	1218000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-48273000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-74447000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-85633000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	787000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-27664000	USD
CY2016Q2	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	388000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
CY2017Q2	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
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	741000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
CY2016Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	58373000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	176779000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	18452000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	59641000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	24514000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	68120000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	7693000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	25061000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-53913000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-63023000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	431000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-20609000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-70363000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	28777000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	18233000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	9829000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-29521000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	5345000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	7592000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	3892000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	376000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-266000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	1437000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	2280000	USD
CY2016Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	122000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-85000	USD
CY2017Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	532000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	832000	USD
CY2016Q3	us-gaap	Other Deferred Credits Noncurrent OtherDeferredCreditsNoncurrent	119625000	USD
CY2017Q2	us-gaap	Other Deferred Credits Noncurrent OtherDeferredCreditsNoncurrent	115436000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-9685000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-11084000	USD
CY2016Q2	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1519000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	7173000	USD
CY2017Q2	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1370000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	4728000	USD
CY2016Q3	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	10919000	USD
CY2017Q2	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	11396000	USD
	us-gaap	Other Significant Noncash Transaction Value Of Consideration Received1 OtherSignificantNoncashTransactionValueOfConsiderationReceived1	22081000	USD
	us-gaap	Other Significant Noncash Transaction Value Of Consideration Received1 OtherSignificantNoncashTransactionValueOfConsiderationReceived1	0	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	11163000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	10186000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	100419000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	103594000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	481781000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	314774000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	8857000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	35049000	USD
CY2016Q3	us-gaap	Refundable Gas Costs RefundableGasCosts	19537000	USD
CY2017Q2	us-gaap	Refundable Gas Costs RefundableGasCosts	13070000	USD
CY2016Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	15616000	USD
CY2017Q2	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	17145000	USD
CY2016Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	320750000	USD
CY2016Q3	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	277113000	USD
CY2017Q2	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	299326000	USD
CY2016Q3	us-gaap	Prepaid Taxes PrepaidTaxes	13138000	USD
CY2017Q2	us-gaap	Prepaid Taxes PrepaidTaxes	11180000	USD
	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	8358000	USD
	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	6223000	USD
	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	115235000	USD
	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	26554000	USD
CY2016Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	9539581000	USD
CY2017Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	9816295000	USD
CY2016Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4454482000	USD
CY2017Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4583524000	USD
	us-gaap	Public Utilities Approved Equity Capital Structure Percentage PublicUtilitiesApprovedEquityCapitalStructurePercentage	0.429
	us-gaap	Public Utilities Approved Rate Increase Decrease Amount PublicUtilitiesApprovedRateIncreaseDecreaseAmount	5900000	USD
	us-gaap	Public Utilities Approved Return On Equity Percentage PublicUtilitiesApprovedReturnOnEquityPercentage	0.087
	us-gaap	Public Utilities Requested Rate Increase Decrease Amount PublicUtilitiesRequestedRateIncreaseDecreaseAmount	41700000	USD
CY2016Q3	us-gaap	Receivables Net Current ReceivablesNetCurrent	133201000	USD
CY2017Q2	us-gaap	Receivables Net Current ReceivablesNetCurrent	127876000	USD
CY2016Q2	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	33859000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	108884000	USD
CY2017Q2	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	10759000	USD
CY2017Q2	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	315126000	USD
CY2016Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	14725000	USD
CY2017Q2	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	34552000	USD
CY2016Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	99789000	USD
CY2017Q2	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	88647000	USD
	us-gaap	Remaining Recovery Period Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided1 RemainingRecoveryPeriodOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided1	P4Y
CY2015Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1103200000	USD
CY2016Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	699399000	USD
CY2016Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	673281000	USD
CY2016Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	676361000	USD
CY2017Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	817348000	USD
CY2017Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	841593000	USD
CY2016Q2	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	335617000	USD
	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	1159943000	USD
CY2017Q2	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	348368000	USD
	us-gaap	Sales Revenue Goods Gross SalesRevenueGoodsGross	1292944000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	3138000	USD
CY2017Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1684048000	USD
CY2016Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1527004000	USD
CY2016Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
CY2017Q2	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	146872	shares
	us-gaap	Stock Issued During Period Shares Employee Benefit Plan StockIssuedDuringPeriodSharesEmployeeBenefitPlan	78327	shares
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	31632	shares
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	47785	shares
CY2016Q2	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	20261000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	61923000	USD
CY2017Q2	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	21447000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	64368000	USD
	us-gaap	Unrealized Gain Loss On Price Risk Cash Flow Derivatives Before Tax UnrealizedGainLossOnPriceRiskCashFlowDerivativesBeforeTax	62000000	USD
CY2016Q3	us-gaap	Unrecovered Costs For Purchased Gas Amount UnrecoveredCostsForPurchasedGasAmount	2440000	USD
CY2017Q2	us-gaap	Unrecovered Costs For Purchased Gas Amount UnrecoveredCostsForPurchasedGasAmount	3757000	USD
CY2016Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	85470216	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	84791447	shares
CY2017Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	86064464	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	85950742	shares
CY2016Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	84917664	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	84791447	shares
CY2017Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	85422313	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	85315154	shares
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Reclassification.</font><font style="font-family:inherit;font-size:10pt;"> Certain prior year amounts have been reclassified to conform with current year presentation.</font></div></div>

Files In Submission

Name	View Source	Status
0000070145-17-000048-index-headers.html	Edgar Link	pending
0000070145-17-000048-index.html	Edgar Link	pending
0000070145-17-000048.txt	Edgar Link	pending
0000070145-17-000048-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
nfg-20170630.xml	Edgar Link	completed
nfg-20170630.xsd	Edgar Link	pending
nfg-20170630_cal.xml	Edgar Link	unprocessable
nfg-20170630_def.xml	Edgar Link	unprocessable
nfg-20170630_lab.xml	Edgar Link	unprocessable
nfg-20170630_pre.xml	Edgar Link	unprocessable
nfg-6302017x10q.htm	Edgar Link	pending
nfg-6302017xexhibit12.htm	Edgar Link	pending
nfg-6302017xexhibit311.htm	Edgar Link	pending
nfg-6302017xexhibit312.htm	Edgar Link	pending
nfg-6302017xexhibit32.htm	Edgar Link	pending
nfg-6302017xexhibit99.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$NFG
NATIONAL FUEL GAS CO Stock $nfg

2017 Q3 Form 10-Q Financial Statement

#000007014517000048 Filed on August 04, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NFG NATIONAL FUEL GAS CO Stock $nfg

2017 Q3 Form 10-Q Financial Statement

#000007014517000048 Filed on August 04, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NFG
NATIONAL FUEL GAS CO Stock $nfg