$CNX
CNX Resources Corp Stock $cnx

$cnx Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000107041220000011 Filed on February 10, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$504.7M	$431.7M	$393.2M
YoY Change	16.93%	-6.21%	47.27%
Cost Of Revenue	$134.5M	$124.7M	$103.1M
YoY Change	7.86%	-20.78%	-26.15%
Gross Profit	$234.3M	$416.0M	$272.2M
YoY Change	-43.68%	135.83%	151.57%
Gross Profit Margin	46.42%	96.37%	69.22%
Selling, General & Admin	$34.50M	$36.10M	$32.40M
YoY Change	-4.43%	28.01%	50.7%
% of Gross Profit	14.72%	8.68%	11.9%
Research & Development	$29.50M	$2.600M	$3.300M
YoY Change	1034.62%	-81.56%	-26.67%
% of Gross Profit	12.59%	0.63%	1.21%
Depreciation & Amortization	$133.9M	$130.1M	$119.6M
YoY Change	2.92%	6.03%	17.23%
% of Gross Profit	57.15%	31.27%	43.93%
Operating Expenses	$211.8M	$176.4M	$275.8M
YoY Change	20.07%	-0.28%	-6.54%
Operating Profit	$22.50M	$239.6M	-$3.599M
YoY Change	-90.61%	-48020.0%	-98.07%
Interest Expense	$98.90M	-$142.2M	$35.72M
YoY Change	-169.55%	-265.16%	-8.02%
% of Operating Profit	439.56%	-59.35%
Other Income/Expense, Net			$82.11M
YoY Change			-2542.21%
Pretax Income	-$290.5M	$105.7M	$203.4M
YoY Change	-374.83%	19.44%	-1905.73%
Income Tax	-$50.40M	-$23.70M	$56.68M
% Of Pretax Income		-22.42%	27.86%
Net Earnings	-$271.4M	$101.9M	$125.0M
YoY Change	-366.28%	-63.16%	-572.86%
Net Earnings / Revenue	-53.77%	23.61%	31.8%
Basic Earnings Per Share	-$1.45	$0.51	$0.59
Diluted Earnings Per Share	-$1.45	$0.50	$0.59
COMMON SHARES
Basic Shares Outstanding	186.6M shares	203.6M shares	210.2M shares
Diluted Shares Outstanding			212.7M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$16.00M	$17.00M	$43.00M
YoY Change	-5.88%	-96.66%	-84.97%
Cash & Equivalents	$16.28M	$17.20M	$42.67M
Short-Term Investments
Other Short-Term Assets	$265.0M	$62.00M	$65.00M
YoY Change	327.42%	-34.74%	-17.72%
Inventory	$6.984M	$9.715M	$9.726M
Prepaid Expenses	$17.46M	$21.55M	$65.09M
Receivables	$133.5M	$252.4M	$147.7M
Other Receivables	$13.68M	$11.08M	$10.10M
Total Short-Term Assets	$498.1M	$501.7M	$315.3M
YoY Change	-0.71%	-41.15%	-60.84%
LONG-TERM ASSETS
Property, Plant & Equipment	$7.137B	$6.942B	$6.769B
YoY Change	2.8%	19.91%	-13.21%
Goodwill	$796.4M	$796.4M	$796.4M
YoY Change	0.0%
Intangibles	$96.65M	$103.2M	$104.8M
YoY Change	-6.35%
Long-Term Investments	$17.00M	$19.00M	$19.00M
YoY Change	-10.53%	-89.17%	-90.0%
Other Assets	$15.22M	$16.72M	$204.4M
YoY Change	-8.97%	-81.77%	10.39%
Total Long-Term Assets	$8.563B	$8.090B	$7.894B
YoY Change	5.84%	33.08%	-3.43%
TOTAL ASSETS
Total Short-Term Assets	$498.1M	$501.7M	$315.3M
Total Long-Term Assets	$8.563B	$8.090B	$7.894B
Total Assets	$9.061B	$8.592B	$8.209B
YoY Change	5.45%	23.95%	-8.58%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$202.6M	$229.8M	$263.0M
YoY Change	-11.86%	8.83%	-13.25%
Accrued Expenses	$136.0M	$252.0M	$237.0M
YoY Change	-46.03%	13.0%	-56.19%
Deferred Revenue	$13.96M	$17.69M
YoY Change	-21.08%	53.07%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$0.00	$7.000M
YoY Change		-100.0%	-36.36%
Total Short-Term Liabilities	$528.9M	$523.0M	$533.7M
YoY Change	1.14%	18.41%	-37.95%
LONG-TERM LIABILITIES
Long-Term Debt	$2.754B	$2.378B	$2.184B
YoY Change	15.82%	8.74%	-12.65%
Other Long-Term Liabilities	$41.60M	$67.57M	$106.6M
YoY Change	-38.44%	-51.68%	-15.31%
Total Long-Term Liabilities	$2.796B	$2.446B	$2.291B
YoY Change	14.32%	5.11%	-12.78%
TOTAL LIABILITIES
Total Short-Term Liabilities	$528.9M	$523.0M	$533.7M
Total Long-Term Liabilities	$2.796B	$2.446B	$2.291B
Total Liabilities	$4.098B	$3.510B	$3.160B
YoY Change	16.75%	15.78%	-35.62%
SHAREHOLDERS EQUITY
Retained Earnings	$1.972B	$2.072B	$2.004B
YoY Change	-4.83%	42.31%	9.77%
Common Stock	$1.870M	$1.990M	$2.055M
YoY Change	-6.03%	-11.2%	-10.85%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.161B	$4.330B	$4.311B
YoY Change
Total Liabilities & Shareholders Equity	$9.061B	$8.592B	$8.209B
YoY Change	5.45%	23.95%	-8.58%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	-$271.4M	$101.9M	$125.0M
YoY Change	-366.28%	-63.16%	-572.86%
Depreciation, Depletion And Amortization	$133.9M	$130.1M	$119.6M
YoY Change	2.92%	6.03%	17.23%
Cash From Operating Activities	$114.5M	$195.6M	$239.3M
YoY Change	-41.46%	17.27%	31.92%
INVESTING ACTIVITIES
Capital Expenditures	-$228.1M	-$322.3M	-$297.4M
YoY Change	-29.23%	38.15%	98.93%
Acquisitions
YoY Change
Other Investing Activities	$29.90M	$12.40M	$351.5M
YoY Change	141.13%	-3200.0%	442.44%
Cash From Investing Activities	-$198.2M	-$309.9M	$54.10M
YoY Change	-36.04%	32.55%	-163.95%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	94.60M	88.80M	-305.5M
YoY Change	6.53%	-69.9%	185.25%
NET CHANGE
Cash From Operating Activities	114.5M	195.6M	239.3M
Cash From Investing Activities	-198.2M	-309.9M	54.10M
Cash From Financing Activities	94.60M	88.80M	-305.5M
Net Change In Cash	10.90M	-25.50M	-12.10M
YoY Change	-142.75%	-111.18%	17.48%
FREE CASH FLOW
Cash From Operating Activities	$114.5M	$195.6M	$239.3M
Capital Expenditures	-$228.1M	-$322.3M	-$297.4M
Free Cash Flow	$342.6M	$517.9M	$536.7M
YoY Change	-33.85%	29.44%	62.19%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	15317-6506
CY2019	dei	City Area Code CityAreaCode	724
CY2017	cnx	Development Wells Drilled Net Nonproductive1 DevelopmentWellsDrilledNetNonproductive1	0	well
CY2019Q4	cnx	Goodwill Impairment Test Measurement Period GoodwillImpairmentTestMeasurementPeriod	P5Y
CY2018Q4	cnx	Valuationallowanceonforeigntaxcredits Valuationallowanceonforeigntaxcredits	43194000	USD
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001070412
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0	USD
CY2017	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2018	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	6522000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	6522000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	6522000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	6522000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	7365000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	792000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-1664000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P2Y
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	31516000	USD
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-14901
CY2019	dei	Entity Registrant Name EntityRegistrantName	CNX Resources Corporation
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	51-0337383
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	CNX Center
CY2019	dei	Entity Address Address Line2 EntityAddressAddressLine2	1000 CONSOL Energy Drive Suite 400
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Canonsburg
CY2019	dei	Local Phone Number LocalPhoneNumber	485-4000
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	800152980	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	186642962	shares
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CY2017	us-gaap	Interest Expense InterestExpense	161443000	USD
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CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	20666000	USD
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CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	118581000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	27736000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	215557000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-176458000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	31948000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	883111000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	295039000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
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CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	62425000	USD
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CY2018	us-gaap	Operating Expenses OperatingExpenses	1226963000	USD
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CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	188063000	USD
CY2019	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	USD
CY2018	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	623663000	USD
CY2017	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7614000	USD
CY2019	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	376105000	USD
CY2018	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	-30212000	USD
CY2017	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	206930000	USD
CY2019	us-gaap	Other Operating Income OtherOperatingIncome	13678000	USD
CY2018	us-gaap	Other Operating Income OtherOperatingIncome	26942000	USD
CY2017	us-gaap	Other Operating Income OtherOperatingIncome	69182000	USD
CY2019	us-gaap	Revenues Revenues	1922449000	USD
CY2018	us-gaap	Revenues Revenues	1730434000	USD
CY2017	us-gaap	Revenues Revenues	1455131000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	65443000	USD
CY2018	us-gaap	Operating Lease Expense OperatingLeaseExpense	95139000	USD
CY2017	us-gaap	Operating Lease Expense OperatingLeaseExpense	88932000	USD
CY2019	us-gaap	Production Tax Expense ProductionTaxExpense	27461000	USD
CY2018	us-gaap	Production Tax Expense ProductionTaxExpense	32750000	USD
CY2017	us-gaap	Production Tax Expense ProductionTaxExpense	29267000	USD
CY2019	cnx	Ep Depreciation Depletionand Amortization EPDepreciationDepletionandAmortization	508463000	USD
CY2018	cnx	Ep Depreciation Depletionand Amortization EPDepreciationDepletionandAmortization	493423000	USD
CY2017	cnx	Ep Depreciation Depletionand Amortization EPDepreciationDepletionandAmortization	412036000	USD
CY2019	cnx	Production Royalty Interestsand Purchased Gas Costs ProductionRoyaltyInterestsandPurchasedGasCosts	90553000	USD
CY2018	cnx	Production Royalty Interestsand Purchased Gas Costs ProductionRoyaltyInterestsandPurchasedGasCosts	64817000	USD
CY2017	cnx	Production Royalty Interestsand Purchased Gas Costs ProductionRoyaltyInterestsandPurchasedGasCosts	52597000	USD
CY2019	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	327400000	USD
CY2018	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2017	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	137865000	USD
CY2019	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	119429000	USD
CY2018	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	0	USD
CY2017	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	18650000	USD
CY2017	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2019	us-gaap	Results Of Operations General And Administrative Related To Oil And Gas Producing Activities ResultsOfOperationsGeneralAndAdministrativeRelatedToOilAndGasProducingActivities	143550000	USD
CY2018	us-gaap	Results Of Operations General And Administrative Related To Oil And Gas Producing Activities ResultsOfOperationsGeneralAndAdministrativeRelatedToOilAndGasProducingActivities	134806000	USD
CY2017	us-gaap	Results Of Operations General And Administrative Related To Oil And Gas Producing Activities ResultsOfOperationsGeneralAndAdministrativeRelatedToOilAndGasProducingActivities	93211000	USD
CY2019	us-gaap	Other Expenses OtherExpenses	79255000	USD
CY2018	us-gaap	Other Expenses OtherExpenses	72412000	USD
CY2017	us-gaap	Other Expenses OtherExpenses	112369000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	1736473000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-54118000	USD
CY2019Q4	us-gaap	Assets Assets	9060806000	USD
CY2018Q4	us-gaap	Assets Assets	8592170000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	202553000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	229806000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	40971000	USD
CY2018Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	61661000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	7164000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	6997000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	61670000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	216581000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	224511000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	528939000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	522975000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2754443000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2378205000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	7706000	USD
CY2018Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	13299000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	110466000	USD
CY2019Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	115138000	USD
CY2018Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	92221000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	476108000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	398682000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	63377000	USD
CY2018Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	37479000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	42320000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	67566000	USD
CY2019Q4	cnx	Total Deferred Credits And Other Liabilities TotalDeferredCreditsAndOtherLiabilities	3569558000	USD
CY2018Q4	cnx	Total Deferred Credits And Other Liabilities TotalDeferredCreditsAndOtherLiabilities	2987452000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	4098497000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	3510427000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	1870000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	1990000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2199605000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2264063000	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1971676000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2071809000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12605000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7904000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	4160546000	USD
CY2019	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	4329958000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	801763000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	751785000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4962309000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5081743000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9060806000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	8592170000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5081743000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3899899000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3940888000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4962309000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5081743000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3899899000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	31948000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	883111000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	380747000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	85708000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	508463000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	493423000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	412036000	USD
CY2019	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	7747000	USD
CY2018	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	8361000	USD
CY2017	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	10630000	USD
CY2019	cnx	Impairmentof Explorationand Production Properties ImpairmentofExplorationandProductionProperties	327400000	USD
CY2018	cnx	Impairmentof Explorationand Production Properties ImpairmentofExplorationandProductionProperties	0	USD
CY2017	cnx	Impairmentof Explorationand Production Properties ImpairmentofExplorationandProductionProperties	137865000	USD
CY2019	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	119429000	USD
CY2018	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	0	USD
CY2017	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	18650000	USD
CY2017	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	38425000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	21341000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	16983000	USD
CY2019	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	35563000	USD
CY2018	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	157015000	USD
CY2017	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	188063000	USD
CY2018	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	623663000	USD
CY2017	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	USD
CY2017	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-2955000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	13242000	USD
CY2017	cnx	Payments On Long Term Notes Including Redemption Premium PaymentsOnLongTermNotesIncludingRedemptionPremium	239716000	USD
CY2019	cnx	Net Proceedsfrom Revolver Mlp NetProceedsfromRevolverMLP	227750000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7614000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-54118000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2129000	USD
CY2019	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	376105000	USD
CY2018	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	-30212000	USD
CY2017	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	206930000	USD
CY2019	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	69780000	USD
CY2018	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	-69720000	USD
CY2017	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	-41174000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	79092000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	345560000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-142829000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2103000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5363000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	49830000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	4056000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2019	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-118622000	USD
CY2018	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	57734000	USD
CY2017	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	32792000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-2731000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1027000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-4254000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	87050000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-118498000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	76196000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-3115000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	1391000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-631000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1000000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-4904000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-22018000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-6405000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	12760000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	45669000	USD
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	4529000	USD
CY2018	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-5839000	USD
CY2019	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-23507000	USD
CY2018	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-1556000	USD
CY2017	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-7778000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	53135000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	81969000	USD
CY2018	cnx	Payments On Long Term Notes Including Redemption Premium PaymentsOnLongTermNotesIncludingRedemptionPremium	955019000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	980560000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	885823000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	433068000	USD
CY2019	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2018	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2017	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	215619000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	980560000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	885823000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	648687000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1192599000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1116397000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	632846000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	299272000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	45160000	USD
CY2018	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	511767000	USD
CY2017	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	414185000	USD
CY2019	cnx	Proceeds Of Distributions From Equity Affiliates Investing Activities ProceedsOfDistributionsFromEquityAffiliatesInvestingActivities	0	USD
CY2018	cnx	Proceeds Of Distributions From Equity Affiliates Investing Activities ProceedsOfDistributionsFromEquityAffiliatesInvestingActivities	9250000	USD
CY2017	cnx	Proceeds Of Distributions From Equity Affiliates Investing Activities ProceedsOfDistributionsFromEquityAffiliatesInvestingActivities	42873000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-1147439000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-894652000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-175788000	USD
CY2019	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2018	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2017	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-46133000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1147439000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-894652000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-221921000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	49000000	USD
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	612000000	USD
CY2017	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	7149000	USD
CY2018	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	7165000	USD
CY2017	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	8037000	USD
CY2019	cnx	Payments On Long Term Notes Including Redemption Premium PaymentsOnLongTermNotesIncludingRedemptionPremium	405876000	USD
CY2018	cnx	Net Proceedsfrom Revolver Mlp NetProceedsfromRevolverMLP	-65500000	USD
CY2017	cnx	Net Proceedsfrom Revolver Mlp NetProceedsfromRevolverMLP	0	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	63884000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	55433000	USD
CY2017	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2019	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	0	USD
CY2018	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	0	USD
CY2017	us-gaap	Proceeds From Sales Of Business Affiliate And Productive Assets ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets	425000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	565000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1713000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1009000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6310000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5385000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6681000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	117477000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	381752000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	103209000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	10655000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	20599000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	361000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	165964000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-483140000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	68005000	USD
CY2019	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
CY2018	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
CY2017	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	-31903000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	165964000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-483140000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	36102000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-915000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-491969000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	462868000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	17198000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	509167000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	46299000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	16283000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	17198000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	509167000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:18px;text-align:justify;padding-left:16px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates: </span></div>The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, as well as various disclosures. Actual results could differ from those estimates. The most significant estimates included in, but not limited to, the preparation of the consolidated financial statements are related to long-lived assets (including intangible assets and goodwill), the values of natural gas, NGLs, condensate and oil (collectively "natural gas") reserves, asset retirement obligations, deferred income tax assets and liabilities, contingencies, fair value of derivative instruments, stock-based compensation and salary retirement benefits.
CY2019	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<div style="line-height:120%;text-align:left;text-indent:18px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Impairment of Proved Properties:</span></div><div style="line-height:120%;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">CNX performs a quantitative impairment test whenever events or changes in circumstances indicate that an asset group's carrying amount may not be recoverable, over proved properties using the published NYMEX forward prices, timing, methods and other assumptions consistent with historical periods. When indicators of impairment are present, tests require that the Company </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">first compare expected future undiscounted cash flows by asset group to their respective carrying values. If the carrying amount exceeds the estimated undiscounted future cash flows, a reduction of the carrying amount of the natural gas properties to their estimated fair values is required, which is determined based on discounted cash flow techniques using significant assumptions including projected revenues, future commodity prices, and a market-specific weighted average cost of capital which are affected by expectations about future market and economic conditions. </span></div><div style="line-height:120%;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;padding-bottom:10px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">During the fourth quarter of 2019, CNX identified certain indicators of impairment specific to our Central Pennsylvania Marcellus asset group and determined that the carrying value of that asset group was not recoverable. The fair value of the asset group was estimated by using level 3 inputs which consisted of discounting the estimated future cash flows using discount rates and other assumptions that market participants would use in their estimates of fair value. As a result, an impairment of $</span><span style="font-family:inherit;font-size:10pt;"><span>327,400</span></span><span style="font-family:inherit;font-size:10pt;"> was included in Impairment of Exploration and Production Properties in the Consolidated Statements of Income. This impairment was related to </span><span style="font-family:inherit;font-size:10pt;"><span>56</span></span><span style="font-family:inherit;font-size:10pt;"> operated wells and approximately </span><span style="font-family:inherit;font-size:10pt;"><span>51,000</span></span><span style="font-family:inherit;font-size:10pt;"> acres within our Central Pennsylvania Marcellus proved properties in Armstrong, Indiana, Jefferson and Westmoreland counties. The majority of these properties were developed prior to 2013 and the last of these properties were developed in 2015. </span></div><div style="line-height:120%;padding-top:18px;text-align:justify;padding-left:16px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Impairment of Unproved Properties: </span></div><div style="line-height:120%;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Capitalized costs of unproved oil and gas properties are evaluated at least annually for recoverability on a prospective basis. Indicators of potential impairment include, but are not limited to, changes brought about by economic factors, commodity price outlooks, our geologists’ evaluation of the property, favorable or unfavorable activity on the property being evaluated and/or adjacent properties, potential shifts in business strategy employed by management and historical experience. The likelihood of an impairment of unproved oil and gas properties increases as the expiration of a lease term approaches if drilling activity has not commenced. If it is determined that the Company does not intend to drill on the property prior to expiration or does not have the intent and ability to extend, renew, trade, or sell the lease prior to expiration, an impairment expense is recorded. Expense for lease expirations that were not previously impaired are recorded as the leases expire. </span></div>
CY2019	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	119429000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3460000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3205000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2866000	USD
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="line-height:120%;text-align:justify;padding-left:16px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Reclassifications: </span></div><div style="line-height:120%;padding-top:18px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Certain amounts in prior periods have been reclassified to conform with the report classifications of the year ended </span><span style="font-family:inherit;font-size:10pt;">December 31, 2019</span><span style="font-family:inherit;font-size:10pt;">, with no effect on previously reported net income, stockholders' equity, or statement of cash flows.</span></div>
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	7659013	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3358260	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3719289	shares
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	31948000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	883111000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	295039000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	112678000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	86578000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-80730000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	796533000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	295039000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	85708000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-80730000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	796533000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	380747000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	190727122	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	212348581	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	228835112	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2280384	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2116700	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	190727122	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	214628965	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	230951812	shares
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.42
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.75
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.29
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.37
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.42
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.75
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.66
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.42
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.71
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.28
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.37
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.42
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.71
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.65
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-4868000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-167000	USD
CY2018	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	1100000	USD
CY2019	cnx	Contracts With Customers Payment Terms ContractsWithCustomersPaymentTerms	P25D
CY2019	cnx	Contracts With Customers Payment Terms ContractsWithCustomersPaymentTerms	P25D
CY2019	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	376105000	USD
CY2018	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	-30212000	USD
CY2017	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	206930000	USD
CY2019	us-gaap	Other Operating Income OtherOperatingIncome	13678000	USD
CY2018	us-gaap	Other Operating Income OtherOperatingIncome	26942000	USD
CY2017	us-gaap	Other Operating Income OtherOperatingIncome	69182000	USD
CY2019	us-gaap	Revenues Revenues	1922449000	USD
CY2018	us-gaap	Revenues Revenues	1730434000	USD
CY2017	us-gaap	Revenues Revenues	1455131000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	252424000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	133480000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	156620000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	38928000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	53322000	USD
CY2017Q4	cnx	Number Of Companies After Spinoff NumberOfCompaniesAfterSpinoff	2	company
CY2018Q4	cnx	Deferred Tax Assets Interest Limitation DeferredTaxAssetsInterestLimitation	32147000	USD
CY2019Q4	cnx	Deferred Tax Assets Gas Well Closing DeferredTaxAssetsGasWellClosing	17888000	USD
CY2018Q4	cnx	Deferred Tax Assets Gas Well Closing DeferredTaxAssetsGasWellClosing	10140000	USD
CY2017	cnx	Disposal Group Including Discontinued Operations Coal Sales DisposalGroupIncludingDiscontinuedOperationsCoalSales	1067841000	USD
CY2017	cnx	Disposal Group Including Discontinued Operations Other Outside Sales DisposalGroupIncludingDiscontinuedOperationsOtherOutsideSales	60066000	USD
CY2017	cnx	Disposal Group Including Discontinued Operations Cargoand Freight Revenue DisposalGroupIncludingDiscontinuedOperationsCargoandFreightRevenue	66297000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Other Income DisposalGroupIncludingDiscontinuedOperationOtherIncome	73645000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	1267849000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Operating Expense DisposalGroupIncludingDiscontinuedOperationOperatingExpense	1147254000	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	120595000	USD
CY2017	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	23984000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	10903000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	85708000	USD
CY2017Q2	srt	Productive Gas Wells Number Of Wells Gross ProductiveGasWellsNumberOfWellsGross	12	well
CY2017Q2	cnx	Business Combination Wells Drilled Uncompleted BusinessCombinationWellsDrilledUncompleted	15	well
CY2019Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	750000	USD
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	12929487	shares
CY2019	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	8.91
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	115477000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	0.022
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	9308000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	13096000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-51243000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-130003000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-31791000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-113000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-1838000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-51356000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-130003000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-33629000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	47717000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	319813000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-166112000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	31375000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	25747000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	23283000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	79092000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	345560000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-142829000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	27736000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	215557000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-176458000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	202913000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	124341000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	130430000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	110339000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	51241000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	102482000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	43194000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	43194000	USD
CY2019Q4	cnx	Deferred Tax Assets Interest Limitation DeferredTaxAssetsInterestLimitation	25734000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	9236000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	9434000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	1209000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	1624000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	10030000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	13714000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	501183000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	460511000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	125054000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	94455000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	376129000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	366056000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	593401000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	606342000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	145424000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	125253000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	105721000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	26160000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	3337000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	3384000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4354000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3599000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	852237000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	764738000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	476108000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	398682000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	202913000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	51241000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	102482000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	51241000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	102482000	USD
CY2019	cnx	Decreasein Federal Alternativeminimum Tax DecreaseinFederalAlternativeminimumTax	51241000	USD
CY2019Q4	cnx	Valuationallowanceonforeigntaxcredits Valuationallowanceonforeigntaxcredits	43194000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	130430000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	110339000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	12534000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	230721000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	60814000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	0.056
CY2018	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Federal Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceFederalAmount	-18110000	USD
CY2018	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Federal Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceFederalPercent	-0.017
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	41503000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	1333000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	0	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	15538000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	0.131
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	23662000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.396
CY2018	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	18181000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.017
CY2017	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-4265000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.004
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	27359000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0.231
CY2019	us-gaap	Income Tax Reconciliation Deductions Medicare Prescription Drug Benefit Subsidy IncomeTaxReconciliationDeductionsMedicarePrescriptionDrugBenefitSubsidy	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Deductions Medicare Prescription Drug Benefit EffectiveIncomeTaxRateReconciliationDeductionsMedicarePrescriptionDrugBenefit	0
CY2018	us-gaap	Income Tax Reconciliation Deductions Medicare Prescription Drug Benefit Subsidy IncomeTaxReconciliationDeductionsMedicarePrescriptionDrugBenefitSubsidy	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Medicare Prescription Drug Benefit EffectiveIncomeTaxRateReconciliationDeductionsMedicarePrescriptionDrugBenefit	0
CY2017	us-gaap	Income Tax Reconciliation Deductions Medicare Prescription Drug Benefit Subsidy IncomeTaxReconciliationDeductionsMedicarePrescriptionDrugBenefitSubsidy	-24942000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Medicare Prescription Drug Benefit EffectiveIncomeTaxRateReconciliationDeductionsMedicarePrescriptionDrugBenefit	-0.210
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	603000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.010
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	3028000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.003
CY2017	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-1147000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.010
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	8771000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.147
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0
CY2019	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance State Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceStateAmount	33238000	USD
CY2019	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance State Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceStatePercent	0.556
CY2018	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance State Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceStateAmount	-22684000	USD
CY2018	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance State Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceStatePercent	-0.021
CY2017	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance State Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceStateAmount	-430000	USD
CY2017	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance State Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceStatePercent	-0.004
CY2019	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Federal Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceFederalAmount	-2640000	USD
CY2019	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Federal Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceFederalPercent	-0.044
CY2017	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Federal Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceFederalAmount	-145772000	USD
CY2017	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Federal Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceFederalPercent	-1.229
CY2019	cnx	Effective Income Tax Rate Reconciliation Other Deferred Adjustments Amount EffectiveIncomeTaxRateReconciliationOtherDeferredAdjustmentsAmount	-1691000	USD
CY2019	cnx	Effective Income Tax Rate Reconciliation Other Deferred Adjustments Percent EffectiveIncomeTaxRateReconciliationOtherDeferredAdjustmentsPercent	-0.028
CY2018	cnx	Effective Income Tax Rate Reconciliation Other Deferred Adjustments Amount EffectiveIncomeTaxRateReconciliationOtherDeferredAdjustmentsAmount	5957000	USD
CY2018	cnx	Effective Income Tax Rate Reconciliation Other Deferred Adjustments Percent EffectiveIncomeTaxRateReconciliationOtherDeferredAdjustmentsPercent	0.006
CY2017	cnx	Effective Income Tax Rate Reconciliation Other Deferred Adjustments Amount EffectiveIncomeTaxRateReconciliationOtherDeferredAdjustmentsAmount	7616000	USD
CY2017	cnx	Effective Income Tax Rate Reconciliation Other Deferred Adjustments Percent EffectiveIncomeTaxRateReconciliationOtherDeferredAdjustmentsPercent	0.064
CY2019	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	3842000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.064
CY2018	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	27429000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.025
CY2017	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	131784000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	1.111
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	-2881000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.048
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	-1208000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.001
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	19081000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.161
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	211000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4498000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4798000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.040
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	27736000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.465
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	215557000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.196
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-176458000	USD
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-1.489
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	23662000	USD
CY2018	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	18181000	USD
CY2018	cnx	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Federal Net Operating Loss Carryback Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateFederalNetOperatingLossCarrybackProvisionalIncomeTaxExpenseBenefit	-23483000	USD
CY2017	cnx	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	-115291000	USD
CY2018	cnx	Tax Cutsand Jobs Actof2017 Amt Tax Credit Income Tax Expense Benefit TaxCutsandJobsActof2017AMTTaxCreditIncomeTaxExpenseBenefit	-12413000	USD
CY2017	cnx	Tax Cutsand Jobs Actof2017 Amt Tax Credit Income Tax Expense Benefit TaxCutsandJobsActof2017AMTTaxCreditIncomeTaxExpenseBenefit	-154385000	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	196643000	USD
CY2018Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	73144000	USD
CY2019Q4	cnx	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	63008000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	31516000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	37813000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2140000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	8437000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	31516000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	31516000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	31516000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2140000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	8437000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	644000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	337000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2018Q1	cnx	Income Tax Examination Reductionto Net Operating Loss IncomeTaxExaminationReductiontoNetOperatingLoss	108651000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	38554000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	204070000	USD
CY2019	us-gaap	Accretion Expense AccretionExpense	9458000	USD
CY2018	us-gaap	Accretion Expense AccretionExpense	9874000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	2933000	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	4795000	USD
CY2019	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	4231000	USD
CY2018	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	5323000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	21740000	USD
CY2018	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	21781000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	68454000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	38554000	USD
CY2019Q4	cnx	Drilling Cost DrillingCost	4688497000	USD
CY2018Q4	cnx	Drilling Cost DrillingCost	4120283000	USD
CY2019Q4	cnx	Gas Gathering Systems Net GasGatheringSystemsNet	2463866000	USD
CY2018Q4	cnx	Gas Gathering Systems Net GasGatheringSystemsNet	2126895000	USD
CY2019Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1208046000	USD
CY2018Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1135411000	USD
CY2019Q4	cnx	Gas Wells And Related Equipment GasWellsAndRelatedEquipment	1042000000	USD
CY2018Q4	cnx	Gas Wells And Related Equipment GasWellsAndRelatedEquipment	859359000	USD
CY2019Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	755590000	USD
CY2018Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	927667000	USD
CY2019Q4	cnx	Surface Land And Other Equipment SurfaceLandAndOtherEquipment	226285000	USD
CY2018Q4	cnx	Surface Land And Other Equipment SurfaceLandAndOtherEquipment	238487000	USD
CY2019Q4	cnx	Other Gas Assets OtherGasAssets	187722000	USD
CY2018Q4	cnx	Other Gas Assets OtherGasAssets	159326000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	10572006000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	9567428000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3435431000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	2624984000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7136575000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6942444000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	5482000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1075000	USD
CY2019Q4	cnx	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	72916000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	13964000	USD
CY2018Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	59517000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6553000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6931000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	6552000	USD
	cnx	Number Of Days Outstanding Prior To Springing Maturity Date Debt Securities NumberOfDaysOutstandingPriorToSpringingMaturityDateDebtSecurities	P91D
CY2019Q4	cnx	Percentageto Mortgage Valueof Proved Reserves PercentagetoMortgageValueofProvedReserves	0.80
CY2019Q4	cnx	Percentageto Mortgage Valueof Proved Developed Producing Reserves PercentagetoMortgageValueofProvedDevelopedProducingReserves	0.80
CY2019Q4	us-gaap	Accrued Royalties Current And Noncurrent AccruedRoyaltiesCurrentAndNoncurrent	74061000	USD
CY2018Q4	us-gaap	Accrued Royalties Current And Noncurrent AccruedRoyaltiesCurrentAndNoncurrent	92005000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	30862000	USD
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	26333000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	21030000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	20482000	USD
CY2019Q4	cnx	Accrued Transportation Charges AccruedTransportationCharges	16533000	USD
CY2018Q4	cnx	Accrued Transportation Charges AccruedTransportationCharges	19661000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	17693000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	7968000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	59410000	USD
CY2019Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	9115000	USD
CY2018Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	7300000	USD
CY2019Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	6248000	USD
CY2018Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	6533000	USD
CY2019Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	38105000	USD
CY2018Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	31851000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	5076000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	1075000	USD
CY2019Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	1587000	USD
CY2018Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	1578000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	216581000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	224511000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	8990000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	8796000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	2754443000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	2378205000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	894307000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	972750000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	900000000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	2767057000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	73809000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	5242000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1241000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	5547000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	17337000	USD
CY2019	us-gaap	Lease Cost LeaseCost	103176000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	21441000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	16797000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	187097000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	61670000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	110466000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	172136000	USD
CY2019Q4	cnx	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	72916000	USD
CY2019Q4	cnx	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	63008000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	9908000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	7164000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	7706000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	14870000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	66827000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1241000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	7149000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	15347000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1846000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	68663000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	7142000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	23789000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	436000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5453000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	433000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	5433000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	127000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	30822000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	193570000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	16106000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	21434000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	1236000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	172136000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	14870000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y4M20D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y1M28D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0496
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0692
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	416000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	33569000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	36280000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	209000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	302000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1338000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1265000	USD
CY2019	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-4865000	USD
CY2018	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	2645000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	-1728000	USD
CY2018	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	0	USD
CY2019	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	0	USD
CY2018	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	126000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	1513000	USD
CY2018	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	1507000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	40196000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	33569000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	0	USD
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	416000	USD
CY2017	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	0	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	1772000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	1823000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2739000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	1866000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	2063000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2019	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1513000	USD
CY2018	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1507000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	1513000	USD
CY2018	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	1507000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	1587000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	1578000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	38609000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	31991000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-40196000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-33569000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-15361000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-10738000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	1727000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	-17000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	17088000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	10721000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	12605000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7904000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	209000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	302000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	375000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1338000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1265000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1201000	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-17000	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-193000	USD
CY2017	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-362000	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-242000	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-865000	USD
CY2017	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-1525000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	48915944	shares
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	11207000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Prior Service Cost Credit Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear	221000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear	-383000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	40196000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	33569000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	40196000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	33169000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	0	USD
CY2018Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	0	USD
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0336
CY2018Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0437
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0
CY2018Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0363
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0437
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0428
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0426
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0363
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0405
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0390
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	1588000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	1588000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	1670000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	1760000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	152047000	USD
CY2019	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	138409000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	5560610	shares
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	36545000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18930000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	16983000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	7346000	USD
CY2019	cnx	Employee Service Sharebased Compensation Nonvested Awards Total Compensation Cost Notyet Recognized Periodfor Recognition EmployeeServiceSharebasedCompensationNonvestedAwardsTotalCompensationCostNotyetRecognizedPeriodforRecognition	P2Y2M26D
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.48
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	6.50
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	6.19
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0213	Rate
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0266	Rate
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0166	Rate
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0	Rate
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0	Rate
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0	Rate
CY2019	cnx	Share Based Comp Expected Forfeiture Rate ShareBasedCompExpectedForfeitureRate	0	Rate
CY2018	cnx	Share Based Comp Expected Forfeiture Rate ShareBasedCompExpectedForfeitureRate	0	Rate
CY2017	cnx	Share Based Comp Expected Forfeiture Rate ShareBasedCompExpectedForfeitureRate	0	Rate
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.4360	Rate
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.5268	Rate
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.5085	Rate
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y6M
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P3Y8M15D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P3Y8M15D
CY2018	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	11505000	USD
CY2017	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	121773000	USD
CY2018	cnx	Segment Reporting Capital Expenditures SegmentReportingCapitalExpenditures	1116397000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5363000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	143111000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	144756000	USD
CY2019	us-gaap	Gain Loss On Sale Of Commodity Contracts GainLossOnSaleOfCommodityContracts	69780000	USD
CY2018	us-gaap	Gain Loss On Sale Of Commodity Contracts GainLossOnSaleOfCommodityContracts	-69720000	USD
CY2017	us-gaap	Gain Loss On Sale Of Commodity Contracts GainLossOnSaleOfCommodityContracts	-41174000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	306325000	USD
CY2018	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	39508000	USD
CY2017	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	248104000	USD
CY2019	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	376105000	USD
CY2018	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	-30212000	USD
CY2017	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	206930000	USD
CY2019Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	311013000	USD
CY2019Q4	cnx	Accounts Payableto Affiliates Accruedbut Unpaid Gathering Services AccountsPayabletoAffiliatesAccruedbutUnpaidGatheringServices	16362000	USD
CY2018Q4	cnx	Accounts Payableto Affiliates Accruedbut Unpaid Gathering Services AccountsPayabletoAffiliatesAccruedbutUnpaidGatheringServices	12202000	USD
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2019	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	376105000	USD
CY2019	us-gaap	Other Operating Income OtherOperatingIncome	13678000	USD
CY2019	us-gaap	Revenues Revenues	1922449000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	59684000	USD
CY2019Q4	us-gaap	Assets Assets	9060806000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	508463000	USD
CY2019	cnx	Segment Reporting Capital Expenditures SegmentReportingCapitalExpenditures	1192599000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2103000	USD
CY2018	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	-30212000	USD
CY2018	us-gaap	Other Operating Income OtherOperatingIncome	26942000	USD
CY2018	us-gaap	Revenues Revenues	1730434000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1098668000	USD
CY2018Q4	us-gaap	Assets Assets	8592170000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	493423000	USD
CY2017	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	206930000	USD
CY2017	us-gaap	Other Operating Income OtherOperatingIncome	69182000	USD
CY2017	us-gaap	Revenues Revenues	1455131000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	118581000	USD
CY2017Q4	us-gaap	Assets Assets	6931913000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	412036000	USD
CY2017	cnx	Segment Reporting Capital Expenditures SegmentReportingCapitalExpenditures	632846000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	49830000	USD
CY2019	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	376105000	USD
CY2018	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	-30212000	USD
CY2017	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	206930000	USD
CY2019	us-gaap	Other Operating Income OtherOperatingIncome	13678000	USD
CY2018	us-gaap	Other Operating Income OtherOperatingIncome	26942000	USD
CY2017	us-gaap	Other Operating Income OtherOperatingIncome	69182000	USD
CY2019	us-gaap	Revenues Revenues	1922449000	USD
CY2018	us-gaap	Revenues Revenues	1730434000	USD
CY2017	us-gaap	Revenues Revenues	1455131000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	59684000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1098668000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	118581000	USD
CY2019Q4	us-gaap	Assets Assets	9060806000	USD
CY2018Q4	us-gaap	Assets Assets	8592170000	USD
CY2018	us-gaap	Production Tax Expense ProductionTaxExpense	32750000	USD
CY2017	us-gaap	Production Tax Expense ProductionTaxExpense	29267000	USD
CY2019	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	516879000	USD
CY2018	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	424206000	USD
CY2017	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	382865000	USD
CY2019	cnx	Results Of Operations Purchased Gas Costs ResultsOfOperationsPurchasedGasCosts	90553000	USD
CY2019Q4	cnx	Drilling Cost DrillingCost	4688497000	USD
CY2018Q4	cnx	Drilling Cost DrillingCost	4120283000	USD
CY2019Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1208046000	USD
CY2018Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1135411000	USD
CY2019Q4	us-gaap	Capitalized Costs Support Equipment And Facilities CapitalizedCostsSupportEquipmentAndFacilities	1110977000	USD
CY2018Q4	us-gaap	Capitalized Costs Support Equipment And Facilities CapitalizedCostsSupportEquipmentAndFacilities	1099047000	USD
CY2019Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	755590000	USD
CY2018Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	927667000	USD
CY2019Q4	us-gaap	Capitalized Costs Wells And Related Equipment And Facilities CapitalizedCostsWellsAndRelatedEquipmentAndFacilities	1042000000	USD
CY2018Q4	us-gaap	Capitalized Costs Wells And Related Equipment And Facilities CapitalizedCostsWellsAndRelatedEquipmentAndFacilities	856973000	USD
CY2019Q4	cnx	Capitalized Costs Other Gas Assets CapitalizedCostsOtherGasAssets	73479000	USD
CY2018Q4	cnx	Capitalized Costs Other Gas Assets CapitalizedCostsOtherGasAssets	54395000	USD
CY2019Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	8878589000	USD
CY2018Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	8193776000	USD
CY2019Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	3263221000	USD
CY2018Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	2475917000	USD
CY2019Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	5615368000	USD
CY2018Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	5717859000	USD
CY2019	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	36710000	USD
CY2018	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	38621000	USD
CY2017	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	15850000	USD
CY2019	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	24760000	USD
CY2018	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	36248000	USD
CY2017	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	32038000	USD
CY2019	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	739874000	USD
CY2018	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	844081000	USD
CY2017	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	544809000	USD
CY2019	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	79855000	USD
CY2018	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	61604000	USD
CY2017	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	48020000	USD
CY2019	us-gaap	Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities	881199000	USD
CY2018	us-gaap	Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities	980554000	USD
CY2017	us-gaap	Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities	640717000	USD
CY2019	us-gaap	Results Of Operations Sales Revenue To Unaffiliated Enterprises ResultsOfOperationsSalesRevenueToUnaffiliatedEnterprises	1364325000	USD
CY2018	us-gaap	Results Of Operations Sales Revenue To Unaffiliated Enterprises ResultsOfOperationsSalesRevenueToUnaffiliatedEnterprises	1577937000	USD
CY2017	us-gaap	Results Of Operations Sales Revenue To Unaffiliated Enterprises ResultsOfOperationsSalesRevenueToUnaffiliatedEnterprises	1125224000	USD
CY2019	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	376105000	USD
CY2018	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	-30212000	USD
CY2017	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	206930000	USD
CY2019	cnx	Gas Royalty Interestsand Purchased Gas Sales GasRoyaltyInterestsandPurchasedGasSales	94027000	USD
CY2018	cnx	Gas Royalty Interestsand Purchased Gas Sales GasRoyaltyInterestsandPurchasedGasSales	65986000	USD
CY2017	cnx	Gas Royalty Interestsand Purchased Gas Sales GasRoyaltyInterestsandPurchasedGasSales	53795000	USD
CY2019	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	1834457000	USD
CY2018	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	1613711000	USD
CY2017	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	1385949000	USD
CY2019	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	65443000	USD
CY2018	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	95139000	USD
CY2017	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	88932000	USD
CY2019	us-gaap	Production Tax Expense ProductionTaxExpense	27461000	USD
CY2018	cnx	Results Of Operations Purchased Gas Costs ResultsOfOperationsPurchasedGasCosts	64817000	USD
CY2017	cnx	Results Of Operations Purchased Gas Costs ResultsOfOperationsPurchasedGasCosts	52597000	USD
CY2019	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	327400000	USD
CY2018	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2017	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	137865000	USD
CY2019	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	119429000	USD
CY2018	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	0	USD
CY2017	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	0	USD
CY2019	us-gaap	Results Of Operations Expense Other ResultsOfOperationsExpenseOther	44380000	USD
CY2018	us-gaap	Results Of Operations Expense Other ResultsOfOperationsExpenseOther	12033000	USD
CY2017	us-gaap	Results Of Operations Expense Other ResultsOfOperationsExpenseOther	48074000	USD
CY2019	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	474352000	USD
CY2018	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	461149000	USD
CY2017	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	412036000	USD
CY2019	us-gaap	Results Of Operations Expense From Oil And Gas Producing Activities ResultsOfOperationsExpenseFromOilAndGasProducingActivities	1665897000	USD
CY2018	us-gaap	Results Of Operations Expense From Oil And Gas Producing Activities ResultsOfOperationsExpenseFromOilAndGasProducingActivities	1090094000	USD
CY2017	us-gaap	Results Of Operations Expense From Oil And Gas Producing Activities ResultsOfOperationsExpenseFromOilAndGasProducingActivities	1151636000	USD
CY2019	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	168560000	USD
CY2018	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	523617000	USD
CY2017	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	234313000	USD
CY2019	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	78398000	USD
CY2018	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	102629000	USD
CY2017	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	-348676000	USD
CY2019	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	90162000	USD
CY2018	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	420988000	USD
CY2017	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	582989000	USD
CY2019	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	539149000	Mcfe
CY2018	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	507104000	Mcfe
CY2017	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	407166000	Mcfe
CY2019	cnx	Development Wells Drilled Net Productive1 DevelopmentWellsDrilledNetProductive1	75.7	well
CY2018	cnx	Development Wells Drilled Net Productive1 DevelopmentWellsDrilledNetProductive1	83.9	well
CY2017	cnx	Development Wells Drilled Net Productive1 DevelopmentWellsDrilledNetProductive1	90.0	well
CY2019	cnx	Development Wells Drilled Net Nonproductive1 DevelopmentWellsDrilledNetNonproductive1	1.0	well
CY2018	cnx	Development Wells Drilled Net Nonproductive1 DevelopmentWellsDrilledNetNonproductive1	0	well
CY2019	cnx	Exploratory Wells Drilled Net Productive1 ExploratoryWellsDrilledNetProductive1	5.0	well
CY2017	cnx	Exploratory Wells Drilled Net Productive1 ExploratoryWellsDrilledNetProductive1	4.0	well
CY2018	cnx	Exploratory Wells Drilled Net Productive1 ExploratoryWellsDrilledNetProductive1	0	well
CY2019Q4	cnx	Net Development Wells Drilled But Uncompleted NetDevelopmentWellsDrilledButUncompleted	35.0	well
CY2019Q4	cnx	Exploratory Wells Drilled But Uncompleted ExploratoryWellsDrilledButUncompleted	1.0	well
CY2019Q4	cnx	Net Developmental Wells Completed Awaiting Tie In To Production NetDevelopmentalWellsCompletedAwaitingTieInToProduction	7.0	well
CY2019Q4	srt	Oil And Gas Delivery Commitments And Contracts Remaining Contractual Volume OilAndGasDeliveryCommitmentsAndContractsRemainingContractualVolume	532300000	Mcf
CY2019Q4	srt	Productive Gas Wells Number Of Wells Gross ProductiveGasWellsNumberOfWellsGross	6512000	well
CY2019Q4	srt	Productive Gas Wells Number Of Wells Net ProductiveGasWellsNumberOfWellsNet	4510000	well
CY2019Q4	srt	Productive Oil Wells Number Of Wells Gross ProductiveOilWellsNumberOfWellsGross	151000	well
CY2019Q4	srt	Productive Oil Wells Number Of Wells Net ProductiveOilWellsNumberOfWellsNet	0	well
CY2019Q4	srt	Gas And Oil Area Developed Gross GasAndOilAreaDevelopedGross	337700000	acre
CY2019Q4	srt	Gas And Oil Area Developed Net GasAndOilAreaDevelopedNet	337700000	acre
CY2019Q4	srt	Gas And Oil Area Undeveloped Gross GasAndOilAreaUndevelopedGross	28916000	acre
CY2019Q4	srt	Gas And Oil Area Undeveloped Net GasAndOilAreaUndevelopedNet	28916000	acre
CY2019Q4	cnx	Unproved Acreage Gross UnprovedAcreageGross	5192777000	acre
CY2019Q4	cnx	Gas And Oil Acreage Unproved Net GasAndOilAcreageUnprovedNet	3868533000	acre
CY2019Q4	cnx	Total Acreage Gross TotalAcreageGross	5559393000	acre
CY2019Q4	cnx	Total Acreage Net TotalAcreageNet	4235149000	acre
CY2016Q4	srt	Proved Developed And Undeveloped Reserve Net Energy ProvedDevelopedAndUndevelopedReserveNetEnergy	6251648000	Mcfe
CY2017	srt	Proved Developed And Undeveloped Reserve Revision Of Previous Estimate Energy ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy	-232321000	Mcfe
CY2017	cnx	Proved Developedand Undeveloped Reserves Price Changes Energy ProvedDevelopedandUndevelopedReservesPriceChangesEnergy	181470000	Mcfe
CY2017	srt	Proved Developed And Undeveloped Reserve Extension And Discovery Energy ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy	1887153000	Mcfe
CY2017	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	407166000	Mcfe
CY2017	srt	Proved Developed And Undeveloped Reserves Sale Of Mineral In Place Energy ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy	99172000	Mcfe
CY2017Q4	srt	Proved Developed And Undeveloped Reserve Net Energy ProvedDevelopedAndUndevelopedReserveNetEnergy	7581612000	Mcfe
CY2018	srt	Proved Developed And Undeveloped Reserve Revision Of Previous Estimate Energy ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy	320925000	Mcfe
CY2018	cnx	Proved Developedand Undeveloped Reserves Price Changes Energy ProvedDevelopedandUndevelopedReservesPriceChangesEnergy	28315000	Mcfe
CY2018	srt	Proved Developed And Undeveloped Reserve Extension And Discovery Energy ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy	960808000	Mcfe
CY2018	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	507104000	Mcfe
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	26610100000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	19261578000	USD
CY2019Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	7903120000	USD
CY2018	srt	Proved Developed And Undeveloped Reserve Purchase Of Mineral In Place Energy ProvedDevelopedAndUndevelopedReservePurchaseOfMineralInPlaceEnergy	321975000	Mcfe
CY2018	srt	Proved Developed And Undeveloped Reserves Sale Of Mineral In Place Energy ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy	825196000	Mcfe
CY2018Q4	srt	Proved Developed And Undeveloped Reserve Net Energy ProvedDevelopedAndUndevelopedReserveNetEnergy	7881335000	Mcfe
CY2019	srt	Proved Developed And Undeveloped Reserve Revision Of Previous Estimate Energy ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy	-518570000	Mcfe
CY2019	cnx	Proved Developedand Undeveloped Reserves Price Changes Energy ProvedDevelopedandUndevelopedReservesPriceChangesEnergy	-45246000	Mcfe
CY2019	srt	Proved Developed And Undeveloped Reserve Extension And Discovery Energy ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy	1647297000	Mcfe
CY2019	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	539149000	Mcfe
CY2019Q4	srt	Proved Developed And Undeveloped Reserve Net Energy ProvedDevelopedAndUndevelopedReserveNetEnergy	8425667000	Mcfe
CY2017Q4	srt	Proved Developed Reserves Boe1 ProvedDevelopedReservesBOE1	4409065000	Mcfe
CY2018Q4	srt	Proved Developed Reserves Boe1 ProvedDevelopedReservesBOE1	4494878000	Mcfe
CY2019Q4	srt	Proved Developed Reserves Boe1 ProvedDevelopedReservesBOE1	4838858000	Mcfe
CY2017Q4	srt	Proved Undeveloped Reserve Boe1 ProvedUndevelopedReserveBOE1	3172547000	Mcfe
CY2018Q4	srt	Proved Undeveloped Reserve Boe1 ProvedUndevelopedReserveBOE1	3386457000	Mcfe
CY2019Q4	srt	Proved Undeveloped Reserve Boe1 ProvedUndevelopedReserveBOE1	3586809000	Mcfe
CY2017	cnx	Proved Developedand Undeveloped Reserve Revisionof Previous Estimate Resulting From Pud Removal Energy ProvedDevelopedandUndevelopedReserveRevisionofPreviousEstimateResultingFromPUDRemovalEnergy	458000000	Mcfe
CY2018	srt	Proved Developed And Undeveloped Reserve Revision Of Previous Estimate Energy ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy	321000000	Mcfe
CY2018	cnx	Proved Developedand Undeveloped Reserve Revisionof Previous Estimate For Increased Performance Energy ProvedDevelopedandUndevelopedReserveRevisionofPreviousEstimateForIncreasedPerformanceEnergy	472000000	Mcfe
CY2018	cnx	Proved Developedand Undeveloped Reserve Revisionof Previous Estimate For Plan Changes Energy ProvedDevelopedandUndevelopedReserveRevisionofPreviousEstimateForPlanChangesEnergy	-151000000	Mcfe
CY2019	cnx	Proved Developedand Undeveloped Reserve Revisionof Previous Estimate For Plan Changes Energy ProvedDevelopedandUndevelopedReserveRevisionofPreviousEstimateForPlanChangesEnergy	-872000000	Mcfe
CY2019	cnx	Proved Developedand Undeveloped Reserve Revisionof Previous Estimate Resulting From Pud Removal Energy ProvedDevelopedandUndevelopedReserveRevisionofPreviousEstimateResultingFromPUDRemovalEnergy	304000000	Mcfe
CY2019	cnx	Proved Developedand Undeveloped Reserve Revisionof Previous Estimate For Increased Performance Energy ProvedDevelopedandUndevelopedReserveRevisionofPreviousEstimateForIncreasedPerformanceEnergy	657000000	Mcfe
CY2019Q4	cnx	Proved Developedand Undeveloped Reserve Reserves Reported For More Than Five Years Energy ProvedDevelopedandUndevelopedReserveReservesReportedForMoreThanFiveYearsEnergy	248570000	Mcfe
CY2019Q4	cnx	Number Of Wells Pending Determination Of Proved Reserves NumberOfWellsPendingDeterminationOfProvedReserves	1	well
CY2019	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	59981000	USD
CY2018	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	46614000	USD
CY2017	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	40149000	USD
CY2019	us-gaap	Exploration Abandonment And Impairment Expense ExplorationAbandonmentAndImpairmentExpense	0	USD
CY2018	us-gaap	Exploration Abandonment And Impairment Expense ExplorationAbandonmentAndImpairmentExpense	809000	USD
CY2017	us-gaap	Exploration Abandonment And Impairment Expense ExplorationAbandonmentAndImpairmentExpense	0	USD
CY2019Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	19489588000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	7730451000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	7234303000	USD
CY2019Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	1121073000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	1600128000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	1710585000	USD
CY2019Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	2720994000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	4147075000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	2475981000	USD
CY2019Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	7744401000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	13132446000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	7840709000	USD
CY2019Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	4673932000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	8476989000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	4709311000	USD
CY2019Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	3070469000	USD
CY2018Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	4655457000	USD
CY2017Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	3131398000	USD
CY2018Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	4655457000	USD
CY2017Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	3131398000	USD
CY2016Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	955117000	USD
CY2019	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-2826725000	USD
CY2018	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	1732229000	USD
CY2017	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	1983475000	USD
CY2019	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	1130685000	USD
CY2018	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	995630000	USD
CY2017	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	831131000	USD
CY2019	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-252796000	USD
CY2018	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	307030000	USD
CY2017	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-145496000	USD
CY2019	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	654027000	USD
CY2018	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	534052000	USD
CY2017	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	588574000	USD
CY2019	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	739874000	USD
CY2018	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	844081000	USD
CY2017	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	544809000	USD
CY2019	srt	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-323922000	USD
CY2018	srt	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-434817000	USD
CY2017	srt	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-129427000	USD
CY2019	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	USD
CY2018	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	209630000	USD
CY2017	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	USD
CY2019	srt	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	0	USD
CY2018	srt	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	434103000	USD
CY2017	srt	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	55277000	USD
CY2019	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-24469000	USD
CY2018	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-49294000	USD
CY2017	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-233017000	USD
CY2019	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	409797000	USD
CY2018	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-507410000	USD
CY2017	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-404582000	USD
CY2019	cnx	Standardized Measureof Discounted Future Net Cash Flowof Proved Oiland Gas Reserves Timingand Other StandardizedMeasureofDiscountedFutureNetCashFlowofProvedOilandGasReservesTimingandOther	586591000	USD
CY2018	cnx	Standardized Measureof Discounted Future Net Cash Flowof Proved Oiland Gas Reserves Timingand Other StandardizedMeasureofDiscountedFutureNetCashFlowofProvedOilandGasReservesTimingandOther	-69087000	USD
CY2017	cnx	Standardized Measureof Discounted Future Net Cash Flowof Proved Oiland Gas Reserves Timingand Other StandardizedMeasureofDiscountedFutureNetCashFlowofProvedOilandGasReservesTimingandOther	712764000	USD
CY2019	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	583320000	USD
CY2018	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	387378000	USD
CY2017	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	145589000	USD
CY2019Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	3070469000	USD
CY2018Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	4655457000	USD
CY2017Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	3131398000	USD
CY2019Q1	us-gaap	Revenues Revenues	275234000	USD
CY2019Q2	us-gaap	Revenues Revenues	602109000	USD
CY2019Q3	us-gaap	Revenues Revenues	526681000	USD
CY2019Q4	us-gaap	Revenues Revenues	504747000	USD
CY2019Q1	us-gaap	Costs And Expenses CostsAndExpenses	147928000	USD
CY2019Q2	us-gaap	Costs And Expenses CostsAndExpenses	153835000	USD
CY2019Q3	us-gaap	Costs And Expenses CostsAndExpenses	153833000	USD
CY2019Q4	us-gaap	Costs And Expenses CostsAndExpenses	182035000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	-64651000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	192694000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	143960000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	-240055000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-87337000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	162477000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	115538000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-271408000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.44
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.62
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.45
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.44
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.45
CY2018Q1	us-gaap	Revenues Revenues	485019000	USD
CY2018Q2	us-gaap	Revenues Revenues	393590000	USD
CY2018Q3	us-gaap	Revenues Revenues	393223000	USD
CY2018Q4	us-gaap	Revenues Revenues	431660000	USD
CY2018Q1	us-gaap	Costs And Expenses CostsAndExpenses	167785000	USD
CY2018Q2	us-gaap	Costs And Expenses CostsAndExpenses	140040000	USD
CY2018Q3	us-gaap	Costs And Expenses CostsAndExpenses	123779000	USD
CY2018Q4	us-gaap	Costs And Expenses CostsAndExpenses	148480000	USD
CY2018Q1	us-gaap	Profit Loss ProfitLoss	545546000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	61394000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	146756000	USD
CY2018Q4	us-gaap	Profit Loss ProfitLoss	129415000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	527563000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	42014000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	125029000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	101927000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.38
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.35
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.19
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.50
CY2019Q4	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	327400000	USD
CY2019	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	119429000	USD
CY2018Q2	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	18650000	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	94455000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	33238000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	2639000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	0	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	125054000	USD
CY2017Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	136576000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	2124000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	44245000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	0	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	94455000	USD
CY2016Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	282778000	USD
CY2017	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	4552000	USD
CY2017	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	150754000	USD
CY2017	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	0	USD
CY2017Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	136576000	USD

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$CNX
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2019 Q4 Form 10-K Financial Statement

#000107041220000011 Filed on February 10, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNX CNX Resources Corp Stock $cnx

2019 Q4 Form 10-K Financial Statement

#000107041220000011 Filed on February 10, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNX
CNX Resources Corp Stock $cnx