$CNX
CNX Resources Corp Stock $cnx

$cnx Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000107041221000016 Filed on February 09, 2021

Income Statement

Concept	2020 Q4	2020	2019 Q4
Revenue	$314.7M	$1.258B	$504.7M
YoY Change	-37.65%	-34.56%	16.93%
Cost Of Revenue	$114.2M	$451.2M	$134.5M
YoY Change	-15.09%	-12.22%	7.86%
Gross Profit	$200.5M	$551.3M	$234.3M
YoY Change	-14.43%	-45.88%	-43.68%
Gross Profit Margin	63.71%	43.82%	46.42%
Selling, General & Admin	$33.00M	$109.4M	$34.50M
YoY Change	-4.35%	-23.82%	-4.43%
% of Gross Profit	16.46%	19.84%	14.72%
Research & Development	$5.700M	$15.00M	$29.50M
YoY Change	-80.68%	-66.22%	1034.62%
% of Gross Profit	2.84%	2.72%	12.59%
Depreciation & Amortization	$144.6M	$501.8M	$133.9M
YoY Change	7.99%	-1.31%	2.92%
% of Gross Profit	72.12%	91.03%	57.15%
Operating Expenses	$187.7M	$1.698B	$211.8M
YoY Change	-11.38%	-2.23%	20.07%
Operating Profit	$12.80M	-$1.146B	$22.50M
YoY Change	-43.11%	59.72%	-90.61%
Interest Expense	$252.3M	$170.8M	$98.90M
YoY Change	155.11%	12.83%	-169.55%
% of Operating Profit	1971.09%		439.56%
Other Income/Expense, Net		-$163.1M
YoY Change		29.12%
Pretax Income	$264.2M	-$602.8M	-$290.5M
YoY Change	-190.95%	-1110.04%	-374.83%
Income Tax	$68.40M	-$174.1M	-$50.40M
% Of Pretax Income	25.89%
Net Earnings	$195.8M	-$483.8M	-$271.4M
YoY Change	-172.13%	499.25%	-366.28%
Net Earnings / Revenue	62.2%	-38.46%	-53.77%
Basic Earnings Per Share	$0.88	-$2.43	-$1.45
Diluted Earnings Per Share	$0.87	-$2.43	-$1.45
COMMON SHARES
Basic Shares Outstanding	224.5M shares	199.2M shares	186.6M shares
Diluted Shares Outstanding		199.2M shares

Balance Sheet

Concept	2020 Q4	2020	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$16.00M	$16.00M	$16.00M
YoY Change	0.0%	0.0%	-5.88%
Cash & Equivalents	$15.62M	$16.00M	$16.28M
Short-Term Investments
Other Short-Term Assets	$97.00M	$97.00M	$265.0M
YoY Change	-63.4%	-63.4%	327.42%
Inventory	$9.657M	$10.00M	$6.984M
Prepaid Expenses	$12.41M		$17.46M
Receivables	$145.9M	$146.0M	$133.5M
Other Receivables	$4.238M	$4.000M	$13.68M
Total Short-Term Assets	$273.3M	$273.0M	$498.1M
YoY Change	-45.13%	-45.18%	-0.71%
LONG-TERM ASSETS
Property, Plant & Equipment	$7.026B	$7.134B	$7.137B
YoY Change	-1.56%	-2.59%	2.8%
Goodwill	$323.3M		$796.4M
YoY Change	-59.4%		0.0%
Intangibles	$90.10M		$96.65M
YoY Change	-6.78%		-6.35%
Long-Term Investments	$16.00M	$16.00M	$17.00M
YoY Change	-5.88%	-5.88%	-10.53%
Other Assets	$27.31M	$205.0M	$15.22M
YoY Change	79.43%	-37.69%	-8.97%
Total Long-Term Assets	$7.768B	$7.769B	$8.563B
YoY Change	-9.28%	-9.27%	5.84%
TOTAL ASSETS
Total Short-Term Assets	$273.3M	$273.0M	$498.1M
Total Long-Term Assets	$7.768B	$7.769B	$8.563B
Total Assets	$8.042B	$8.042B	$9.061B
YoY Change	-11.25%	-11.25%	5.45%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$118.2M	$118.0M	$202.6M
YoY Change	-41.65%	-41.87%	-11.86%
Accrued Expenses	$125.0M	$125.0M	$136.0M
YoY Change	-8.09%	-8.09%	-46.03%
Deferred Revenue	$10.99M		$13.96M
YoY Change	-21.33%		-21.08%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$22.57M	$29.00M	$0.00
YoY Change		314.29%
Total Short-Term Liabilities	$441.3M	$441.0M	$528.9M
YoY Change	-16.57%	-16.64%	1.14%
LONG-TERM LIABILITIES
Long-Term Debt	$2.401B	$2.402B	$2.754B
YoY Change	-12.82%	-13.03%	15.82%
Other Long-Term Liabilities	$44.04M	$309.0M	$41.60M
YoY Change	5.88%	-6.65%	-38.44%
Total Long-Term Liabilities	$2.445B	$2.711B	$2.796B
YoY Change	-12.54%	-12.35%	14.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$441.3M	$441.0M	$528.9M
Total Long-Term Liabilities	$2.445B	$2.711B	$2.796B
Total Liabilities	$3.619B	$3.619B	$4.098B
YoY Change	-11.69%	-26.14%	16.75%
SHAREHOLDERS EQUITY
Retained Earnings	$1.476B		$1.972B
YoY Change	-25.14%		-4.83%
Common Stock	$2.208M		$1.870M
YoY Change	18.07%		-6.03%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.422B	$4.422B	$4.161B
YoY Change
Total Liabilities & Shareholders Equity	$8.042B	$8.042B	$9.061B
YoY Change	-11.25%	-11.25%	5.45%

Cashflow Statement

Concept	2020 Q4	2020	2019 Q4
OPERATING ACTIVITIES
Net Income	$195.8M	-$483.8M	-$271.4M
YoY Change	-172.13%	499.25%	-366.28%
Depreciation, Depletion And Amortization	$144.6M	$501.8M	$133.9M
YoY Change	7.99%	-1.31%	2.92%
Cash From Operating Activities	$160.8M	$795.1M	$114.5M
YoY Change	40.44%	-18.92%	-41.46%
INVESTING ACTIVITIES
Capital Expenditures	-$92.10M	$487.3M	-$228.1M
YoY Change	-59.62%	-59.14%	-29.23%
Acquisitions		$0.00
YoY Change
Other Investing Activities	$16.30M	$48.30M	$29.90M
YoY Change	-45.48%	6.86%	141.13%
Cash From Investing Activities	-$75.70M	-$439.0M	-$198.2M
YoY Change	-61.81%	-61.74%	-36.04%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$35.19M
YoY Change		-69.9%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-219.7M	-$350.8M	94.60M
YoY Change	-332.24%	-311.36%	6.53%
NET CHANGE
Cash From Operating Activities	160.8M	$795.1M	114.5M
Cash From Investing Activities	-75.70M	-$439.0M	-198.2M
Cash From Financing Activities	-219.7M	-$350.8M	94.60M
Net Change In Cash	-134.6M	$5.316M	10.90M
YoY Change	-1334.86%	-680.98%	-142.75%
FREE CASH FLOW
Cash From Operating Activities	$160.8M	$795.1M	$114.5M
Capital Expenditures	-$92.10M	$487.3M	-$228.1M
Free Cash Flow	$252.9M	$307.8M	$342.6M
YoY Change	-26.18%	-245.15%	-33.85%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001070412
CY2018	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201802Member
CY2020	dei	Local Phone Number LocalPhoneNumber	485-4000
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-14901
CY2020	dei	Entity Registrant Name EntityRegistrantName	CNX Resources Corporation
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	51-0337383
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	CNX Center
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	1000 CONSOL Energy Drive Suite 400
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Canonsburg
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	15317-6506
CY2020	dei	City Area Code CityAreaCode	724
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	1111264635	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	219707417	shares
CY2020	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	172982000	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
CY2020	cnx	Other Revenue And Operating Income OtherRevenueAndOperatingIncome	82459000	USD
CY2019	cnx	Other Revenue And Operating Income OtherRevenueAndOperatingIncome	87992000	USD
CY2018	cnx	Other Revenue And Operating Income OtherRevenueAndOperatingIncome	116723000	USD
CY2020	us-gaap	Revenues Revenues	1257978000	USD
CY2019	us-gaap	Revenues Revenues	1922449000	USD
CY2018	us-gaap	Revenues Revenues	1730434000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	40407000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	65443000	USD
CY2018	us-gaap	Operating Lease Expense OperatingLeaseExpense	95139000	USD
CY2020	us-gaap	Production Tax Expense ProductionTaxExpense	24196000	USD
CY2019	us-gaap	Production Tax Expense ProductionTaxExpense	27461000	USD
CY2018	us-gaap	Production Tax Expense ProductionTaxExpense	32750000	USD
CY2020	cnx	Ep Depreciation Depletionand Amortization EPDepreciationDepletionandAmortization	501821000	USD
CY2019	cnx	Ep Depreciation Depletionand Amortization EPDepreciationDepletionandAmortization	508463000	USD
CY2018	cnx	Ep Depreciation Depletionand Amortization EPDepreciationDepletionandAmortization	493423000	USD
CY2020	cnx	Production Royalty Interestsand Purchased Gas Costs ProductionRoyaltyInterestsandPurchasedGasCosts	100902000	USD
CY2019	cnx	Production Royalty Interestsand Purchased Gas Costs ProductionRoyaltyInterestsandPurchasedGasCosts	90553000	USD
CY2018	cnx	Production Royalty Interestsand Purchased Gas Costs ProductionRoyaltyInterestsandPurchasedGasCosts	64817000	USD
CY2020	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	61849000	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
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	473045000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	0	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
CY2020	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	18650000	USD
CY2020	us-gaap	Results Of Operations General And Administrative Related To Oil And Gas Producing Activities ResultsOfOperationsGeneralAndAdministrativeRelatedToOilAndGasProducingActivities	109375000	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
CY2020	us-gaap	Other Expenses OtherExpenses	85472000	USD
CY2019	us-gaap	Other Expenses OtherExpenses	79255000	USD
CY2018	us-gaap	Other Expenses OtherExpenses	72412000	USD
CY2020	us-gaap	Operating Expenses OperatingExpenses	1697744000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	1736473000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	1226963000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-23584000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2862000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	14571000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	21224000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	35563000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	157015000	USD
CY2020	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	USD
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CY2018	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	623663000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	10101000	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
CY2020	us-gaap	Interest Expense InterestExpense	170806000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2019	us-gaap	Interest Expense InterestExpense	151379000	USD
CY2018	us-gaap	Interest Expense InterestExpense	145934000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-163065000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-126292000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	595197000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	1860809000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	1862765000	USD
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	631766000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-602831000	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
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-174087000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	27736000	USD
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CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	55031000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	112678000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	86578000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-486354000	USD
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CY2020Q4	us-gaap	Inventory Net InventoryNet	9657000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	6984000	USD
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	88000	USD
CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	62425000	USD
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CY2019Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	17456000	USD
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CY2019Q4	us-gaap	Assets Current AssetsCurrent	498101000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	10963996000	USD
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CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7136575000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	108683000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	187097000	USD
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	16022000	USD
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	16710000	USD
CY2020Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	188237000	USD
CY2019Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	314096000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	323314000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	796359000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	90095000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	96647000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	5247000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	0	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	11289000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15221000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	742887000	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	1426130000	USD
CY2020Q4	us-gaap	Assets Assets	8041764000	USD
CY2019Q4	us-gaap	Assets Assets	9060806000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	118185000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	202553000	USD
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	42329000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	41466000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	6876000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	7164000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	22574000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	52575000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	61670000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	198773000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	41596000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	216086000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	441312000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	528939000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2401427000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2754443000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	1057000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	7706000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	53235000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	110466000	USD
CY2020Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	127290000	USD
CY2019Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	115862000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	466253000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	476108000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	84712000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	63377000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	44041000	USD
CY2020Q4	cnx	Total Deferred Credits And Other Liabilities TotalDeferredCreditsAndOtherLiabilities	3178015000	USD
CY2019Q4	cnx	Total Deferred Credits And Other Liabilities TotalDeferredCreditsAndOtherLiabilities	3569558000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	3619327000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	4098497000	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	220440993	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	220440993	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	186642962	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	186642962	shares
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	2208000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	1870000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2959357000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2976000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2199605000	USD
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	15000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	15000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1476056000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1971676000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-15184000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12605000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	4422437000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	4160546000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	0	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	801763000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4422437000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4962309000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	8041764000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9060806000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3899899000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	883111000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1713000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	383752000	USD
CY2018	us-gaap	Stock Granted During Period Value Sharebased Compensation Forfeited StockGrantedDuringPeriodValueSharebasedCompensationForfeited	5385000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	21341000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1672000	USD
CY2018	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	0	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	55433000	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	718577000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5081743000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5081743000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	31948000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	565000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	115477000	USD
CY2019	us-gaap	Stock Granted During Period Value Sharebased Compensation Forfeited StockGrantedDuringPeriodValueSharebasedCompensationForfeited	6310000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	38425000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4701000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	63884000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4962309000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4962309000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-428744000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2057000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	43247000	USD
CY2020	us-gaap	Stock Granted During Period Value Sharebased Compensation Forfeited StockGrantedDuringPeriodValueSharebasedCompensationForfeited	2015000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14382000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3460000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	87050000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	78317000	USD
CY2020	cnx	Adjustments To Additional Paid In Capital Purchase Of Capped Call AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCall	26351000	USD
CY2020	cnx	Adjustments To Additional Paid In Capital Purchase Of Capped Call AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCall	26351000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2579000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	41987000	USD
CY2020	cnx	Stockholders Equity Merger Related Adjustments StockholdersEquityMergerRelatedAdjustments	-89705000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4422437000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-428744000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	31948000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	883111000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	501821000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	508463000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	493423000	USD
CY2020	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	21202000	USD
CY2019	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	7747000	USD
CY2018	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	8361000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3205000	USD
CY2020	cnx	Impairmentof Explorationand Production Properties ImpairmentofExplorationandProductionProperties	61849000	USD
CY2019	cnx	Impairmentof Explorationand Production Properties ImpairmentofExplorationandProductionProperties	327400000	USD
CY2018	cnx	Impairmentof Explorationand Production Properties ImpairmentofExplorationandProductionProperties	0	USD
CY2020	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	0	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
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	473045000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	18650000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	14382000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	38425000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	21341000	USD
CY2020	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	21224000	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
CY2020	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	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
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	10101000	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
CY2020	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	172982000	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
CY2020	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	-13051000	USD
CY2019	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	0	USD
CY2018	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	0	USD
CY2020	us-gaap	Increase Decrease Cash Collateral From Counterparties IncreaseDecreaseCashCollateralFromCounterparties	461217000	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
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-118300000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	79092000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	345560000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-688000	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
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	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
CY2020	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	4895000	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
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	2673000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-2731000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1027000	USD
CY2020	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	62336000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-118498000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-4923000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-3115000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	1391000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	39000	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
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-48485000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-6405000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	12760000	USD
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-4314000	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
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-6453000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	13242000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	53135000	USD
CY2020	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-1233000	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
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	795071000	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
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	487291000	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
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	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
CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	48322000	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
CY2020	cnx	Proceeds Of Distributions From Equity Affiliates Investing Activities ProceedsOfDistributionsFromEquityAffiliatesInvestingActivities	0	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
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-438969000	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
CY2020	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	500200000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	49000000	USD
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	612000000	USD
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	7155000	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	7149000	USD
CY2018	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	7165000	USD
CY2020	cnx	Payments On Long Term Notes Including Redemption Premium PaymentsOnLongTermNotesIncludingRedemptionPremium	882213000	USD
CY2019	cnx	Payments On Long Term Notes Including Redemption Premium PaymentsOnLongTermNotesIncludingRedemptionPremium	405876000	USD
CY2018	cnx	Payments On Long Term Notes Including Redemption Premium PaymentsOnLongTermNotesIncludingRedemptionPremium	955019000	USD
CY2020	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	158794000	USD
CY2019	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2020	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	334650000	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2018	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2020	cnx	Payments For Purchase Of Capped Call Related To Convertible Debt PaymentsForPurchaseOfCappedCallRelatedToConvertibleDebt	35673000	USD
CY2019	cnx	Payments For Purchase Of Capped Call Related To Convertible Debt PaymentsForPurchaseOfCappedCallRelatedToConvertibleDebt	0	USD
CY2018	cnx	Payments For Purchase Of Capped Call Related To Convertible Debt PaymentsForPurchaseOfCappedCallRelatedToConvertibleDebt	0	USD
CY2020	cnx	Net Proceedsfrom Revolver Mlp NetProceedsfromRevolverMLP	-20750000	USD
CY2019	cnx	Net Proceedsfrom Revolver Mlp NetProceedsfromRevolverMLP	227750000	USD
CY2018	cnx	Net Proceedsfrom Revolver Mlp NetProceedsfromRevolverMLP	-65500000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	41987000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	63884000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	55433000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2057000	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
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2015000	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
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	37247000	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
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	26047000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	10655000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	20599000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-350786000	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
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	5316000	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
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
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	21599000	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
CY2020	us-gaap	Use Of Estimates UseOfEstimates	Use of Estimates: 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), accounts receivable credit losses, 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, the fair value of the liability and equity components of the convertible senior notes, stock-based compensation and salary retirement benefits.
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	15617000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	16283000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	17198000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	735000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	5247000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	0	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	0	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	21599000	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
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	145929000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	133480000	USD
CY2020Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	4238000	USD
CY2019Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	13679000	USD
CY2020	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<div style="text-indent:13.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Impairment of Proved Properties:</span></div><div><span><br/></span></div><div style="text-align:justify;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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 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="text-align:justify;text-indent:22.5pt"><span><br/></span></div><div style="text-align:justify;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">During the year ended December 31, 2020, CNX recognized certain indicators of impairments specific to our Southwest Pennsylvania Coalbed Methane 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 $61,849 was recognized and is included in Impairment of Exploration and Production Properties in the Consolidated Statements of Income. The impairment was related to an economic decision to temporarily idle certain wells and the related processing facility during the first quarter.</span></div><div style="margin-bottom:8pt;text-align:justify;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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 $327,400 was included in Impairment of Exploration and Production Properties in the Consolidated Statements of Income. This impairment was related to 56 operated wells and approximately 51,000 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="text-align:justify;text-indent:13.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Impairment of Unproved Properties: </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="padding-left:11.25pt;text-align:justify;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div>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.
CY2020	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	61849000	USD
CY2019	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	327400000	USD
CY2019	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	119429000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	473045000	USD
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="padding-left:11.25pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Reclassifications: </span></div><div style="margin-top:13.5pt;text-align:justify;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain amounts in prior periods have been reclassified to conform with the report classifications of the year ended December 31, 2020, with no effect on previously reported net income, stockholders' equity, or statement of cash flows.</span></div>
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	7082480	shares
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
CY2020	us-gaap	Profit Loss ProfitLoss	-428744000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	31948000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	883111000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	55031000	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
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-483775000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-80730000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	796533000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	199225441	shares
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
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2280384	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	199225441	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
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.43
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.42
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.75
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.43
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.42
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.71
CY2020	cnx	Contracts With Customers Payment Terms ContractsWithCustomersPaymentTerms	P25D
CY2020	cnx	Contracts With Customers Payment Terms ContractsWithCustomersPaymentTerms	P25D
CY2020	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	172982000	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
CY2020	cnx	Other Revenue And Operating Income OtherRevenueAndOperatingIncome	82459000	USD
CY2019	cnx	Other Revenue And Operating Income OtherRevenueAndOperatingIncome	87992000	USD
CY2018	cnx	Other Revenue And Operating Income OtherRevenueAndOperatingIncome	116723000	USD
CY2020	us-gaap	Revenues Revenues	1257978000	USD
CY2019	us-gaap	Revenues Revenues	1922449000	USD
CY2018	us-gaap	Revenues Revenues	1730434000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	133480000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	145929000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	120275000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	55500000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	37151000	USD
CY2020Q3	cnx	Business Combination Consideration Transferred Equity Interests Issued And Issuable Entity Shares Issued Per Acquiree Share BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare	0.88	shares
CY2020Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	750000000	USD
CY2020	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	4138527	shares
CY2020	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	10.43
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	43247000	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
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	25894324	shares
CY2018	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	14.80
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	383752000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-55799000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-51243000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-130003000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12000	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
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-55787000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-51356000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-130003000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-83080000	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
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-35220000	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
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-118300000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	79092000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	345560000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-174087000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	27736000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	215557000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	215936000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	202913000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	129641000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	130430000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	43194000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	43194000	USD
CY2020Q4	cnx	Deferred Tax Assets Operating Lease Right Of Use DeferredTaxAssetsOperatingLeaseRightOfUse	28085000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4354000	USD
CY2019Q4	cnx	Deferred Tax Assets Operating Lease Right Of Use DeferredTaxAssetsOperatingLeaseRightOfUse	47849000	USD
CY2020Q4	cnx	Deferred Tax Assets Gas Well Closing DeferredTaxAssetsGasWellClosing	24251000	USD
CY2019Q4	cnx	Deferred Tax Assets Gas Well Closing DeferredTaxAssetsGasWellClosing	17888000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	11478000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	9236000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	6639000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	9308000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	51241000	USD
CY2020Q4	cnx	Deferred Tax Assets Interest Limitation DeferredTaxAssetsInterestLimitation	0	USD
CY2019Q4	cnx	Deferred Tax Assets Interest Limitation DeferredTaxAssetsInterestLimitation	25734000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9416000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	10030000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	468640000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	547823000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	123098000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	125054000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	345542000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	422769000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	649917000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	593401000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	85882000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	145424000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	26882000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	105721000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	28287000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	46640000	USD
CY2020Q4	cnx	Deferred Tax Liabilities Deferred Expense Debt Discount DeferredTaxLiabilitiesDeferredExpenseDebtDiscount	18097000	USD
CY2019Q4	cnx	Deferred Tax Liabilities Deferred Expense Debt Discount DeferredTaxLiabilitiesDeferredExpenseDebtDiscount	0	USD
CY2020Q4	cnx	Deferred Tax Liabilities Advance Royalties DeferredTaxLiabilitiesAdvanceRoyalties	2519000	USD
CY2019Q4	cnx	Deferred Tax Liabilities Advance Royalties DeferredTaxLiabilitiesAdvanceRoyalties	3337000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	211000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	811795000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	898877000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	466253000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	476108000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	215936000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	51241000	USD
CY2020	cnx	Decreasein Federal Alternativeminimum Tax DecreaseinFederalAlternativeminimumTax	51241000	USD
CY2020Q4	cnx	Valuationallowanceonforeigntaxcredits Valuationallowanceonforeigntaxcredits	43194000	USD
CY2019Q4	cnx	Valuationallowanceonforeigntaxcredits Valuationallowanceonforeigntaxcredits	43194000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	129641000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	130430000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-126595000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
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	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	-32336000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	0.055
CY2019	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	1333000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	0.022
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
CY2020	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	11556000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.019
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
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	375000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.001
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
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	13000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0
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
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	4311000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.007
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
CY2020	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance State Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceStateAmount	-2004000	USD
CY2020	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance State Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceStatePercent	0.003
CY2020Q4	cnx	Percentageto Mortgage Valueof Proved Reserves PercentagetoMortgageValueofProvedReserves	0.85
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
CY2020	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Federal Amount EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceFederalAmount	48000	USD
CY2020	cnx	Effective Income Tax Rate Reconciliation Changein Deferred Tax Assets Valuation Allowance Federal Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxAssetsValuationAllowanceFederalPercent	0
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
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
CY2020	cnx	Effective Income Tax Rate Reconciliation Other Deferred Adjustments Amount EffectiveIncomeTaxRateReconciliationOtherDeferredAdjustmentsAmount	1166000	USD
CY2020	cnx	Effective Income Tax Rate Reconciliation Other Deferred Adjustments Percent EffectiveIncomeTaxRateReconciliationOtherDeferredAdjustmentsPercent	-0.002
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
CY2020	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	1450000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.002
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
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	6284000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.010
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
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	225000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
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
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-174087000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.289
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
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
CY2018	cnx	Tax Cutsand Jobs Actof2017 Amt Tax Credit Income Tax Expense Benefit TaxCutsandJobsActof2017AMTTaxCreditIncomeTaxExpenseBenefit	-12413000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	31516000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	31516000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1726000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	10963996000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1351000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	31891000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	31516000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	31891000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	31516000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1726000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1351000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	68454000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	38554000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	703000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	0	USD
CY2020	us-gaap	Accretion Expense AccretionExpense	11067000	USD
CY2019	us-gaap	Accretion Expense AccretionExpense	9458000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	2806000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	2933000	USD
CY2020	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	7905000	USD
CY2019	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	4231000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	19449000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	21740000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	93168000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	68454000	USD
CY2020Q4	cnx	Drilling Cost DrillingCost	4965252000	USD
CY2019Q4	cnx	Drilling Cost DrillingCost	4688497000	USD
CY2020Q4	cnx	Gas Gathering Systems Net GasGatheringSystemsNet	2510917000	USD
CY2019Q4	cnx	Gas Gathering Systems Net GasGatheringSystemsNet	2463866000	USD
CY2020Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1253094000	USD
CY2019Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1208046000	USD
CY2020Q4	cnx	Gas Wells And Related Equipment GasWellsAndRelatedEquipment	1120061000	USD
CY2019Q4	cnx	Gas Wells And Related Equipment GasWellsAndRelatedEquipment	1042000000	USD
CY2020Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	725705000	USD
CY2019Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	755590000	USD
CY2020Q4	cnx	Surface Land And Other Equipment SurfaceLandAndOtherEquipment	199322000	USD
CY2019Q4	cnx	Surface Land And Other Equipment SurfaceLandAndOtherEquipment	226285000	USD
CY2020Q4	cnx	Other Gas Assets OtherGasAssets	189645000	USD
CY2019Q4	cnx	Other Gas Assets OtherGasAssets	187722000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	10572006000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3938451000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3435431000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7025545000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7136575000	USD
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1328000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	5482000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	473045000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	473045000	USD
CY2020Q4	us-gaap	Finite Lived Customer Relationships Gross FiniteLivedCustomerRelationshipsGross	109752000	USD
CY2019Q4	us-gaap	Finite Lived Customer Relationships Gross FiniteLivedCustomerRelationshipsGross	109752000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	19657000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	13105000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	90095000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	96647000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6552000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6552000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6931000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	6552000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	6552000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	6552000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	6552000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	6552000	USD
CY2020Q4	cnx	Percentageto Mortgage Valueof Proved Developed Producing Reserves PercentagetoMortgageValueofProvedDevelopedProducingReserves	0.85
CY2020Q4	us-gaap	Accrued Royalties Current And Noncurrent AccruedRoyaltiesCurrentAndNoncurrent	72401000	USD
CY2019Q4	us-gaap	Accrued Royalties Current And Noncurrent AccruedRoyaltiesCurrentAndNoncurrent	74061000	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	26549000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	30862000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	20340000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	21030000	USD
CY2020Q4	cnx	Accrued Transportation Charges AccruedTransportationCharges	15969000	USD
CY2019Q4	cnx	Accrued Transportation Charges AccruedTransportationCharges	16533000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	10986000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	13964000	USD
CY2020Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	10580000	USD
CY2019Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	9115000	USD
CY2020Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	5009000	USD
CY2019Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	6248000	USD
CY2020Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	26697000	USD
CY2019Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	37610000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	8455000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	5076000	USD
CY2020Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	1787000	USD
CY2019Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	1587000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	198773000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	216086000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	26852000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	8990000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	2424001000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	2754443000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	22574000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2401427000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2754443000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	22574000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	23712000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	24469000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	474366000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	23057000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1989166000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	2557344000	USD
CY2020	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	334650000	USD
CY2020Q2	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1000	USD
CY2020Q2	cnx	Additional Paid In Capital Capped Calls Tax Impact AdditionalPaidInCapitalCappedCallsTaxImpact	9322000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7614000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	74703000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	73809000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	4959000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	5242000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	739000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1241000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	3252000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	5547000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	9634000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	17337000	USD
CY2020	us-gaap	Lease Cost LeaseCost	93287000	USD
CY2019	us-gaap	Lease Cost LeaseCost	103176000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	21441000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	108683000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	187097000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	52575000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	61670000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	53235000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	110466000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	105810000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	172136000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	72653000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	72916000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	67508000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	63008000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	5145000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	9908000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	6876000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	7164000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	1057000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	7706000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	7933000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	14870000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	62610000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	66827000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	0	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	739000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1241000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	7155000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	7149000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	4027000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	15347000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	257000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1846000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	56190000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	7138000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	21592000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	446000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	5453000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	442000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5433000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	155000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4824000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	38000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	25996000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	40000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	119488000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	8259000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	13678000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	326000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	105810000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	7933000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y8M4D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y4M20D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P1Y4M13D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y1M28D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0440
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0496
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0633
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
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	40196000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	33569000	USD
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	247000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	209000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1179000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1338000	USD
CY2020	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-4098000	USD
CY2019	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-4865000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	-1728000	USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	1644000	USD
CY2019	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	1513000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	44076000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	40196000	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
CY2020	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1644000	USD
CY2019	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1513000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	1644000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	1513000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	1787000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	1587000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	42289000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	38609000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-44076000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-40196000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-19075000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-15361000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	1506000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	1727000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	20581000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	17088000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	15184000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	12605000	USD
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	247000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	209000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	302000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1179000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1338000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1265000	USD
CY2020	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	221000	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
CY2020	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-383000	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
CY2020	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	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
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2030000	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
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	44076000	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
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	43886000	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
CY2020Q4	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 Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	0	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0247
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0336
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate	0.0226
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate	0.0301
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0336
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
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0
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
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate	0.0247
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate	0.0339
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Interest Crediting Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate	0.0394
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	1787000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	1846000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	1913000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	1977000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	2049000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	11172000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	14081055	shares
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12897000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	36545000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18930000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2134000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3955000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4169000	USD
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	10830000	USD
CY2020	cnx	Employee Service Sharebased Compensation Nonvested Awards Total Compensation Cost Notyet Recognized Periodfor Recognition EmployeeServiceSharebasedCompensationNonvestedAwardsTotalCompensationCostNotyetRecognizedPeriodforRecognition	P1Y9M25D
CY2020Q3	cnx	Business Combination Consideration Transferred Equity Interests Issued And Issuable Entity Shares Issued Per Acquiree Share BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare	0.88	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4696264	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.05
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	299541	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	10.46
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	298513	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	6.87
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	3561	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	10.53
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	493222	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	43.53
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4200509	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	15.32
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P4Y2M4D
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	9430000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3908444	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	15.68
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y9M21D
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	9330000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	141992000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	143111000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	144756000	USD
CY2020	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	118125000	USD
CY2019	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	138409000	USD
CY2018	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	11505000	USD
CY2020Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	84657000	USD
CY2019Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	247794000	USD
CY2020Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	188237000	USD
CY2019Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	314096000	USD
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	42329000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	41466000	USD
CY2020Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	127290000	USD
CY2019Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	115862000	USD
CY2020	us-gaap	Gain Loss On Sale Of Commodity Contracts GainLossOnSaleOfCommodityContracts	461217000	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
CY2020	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-288235000	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
CY2020	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	172982000	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
CY2020	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-3141000	USD
CY2019	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	223000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-13051000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-1219000	USD
CY2020Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	291202000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	numberOfDivisions
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	numberOfSegments
CY2020	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	172982000	USD
CY2020	cnx	Other Revenue And Operating Income OtherRevenueAndOperatingIncome	82459000	USD
CY2020	us-gaap	Revenues Revenues	1257978000	USD
CY2020	us-gaap	Operating Expenses OperatingExpenses	1697744000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-602831000	USD
CY2020Q4	us-gaap	Assets Assets	8041764000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	501821000	USD
CY2020	cnx	Segment Reporting Capital Expenditures SegmentReportingCapitalExpenditures	487291000	USD
CY2019	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	376105000	USD
CY2019	cnx	Other Revenue And Operating Income OtherRevenueAndOperatingIncome	87992000	USD
CY2019	us-gaap	Revenues Revenues	1922449000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	1736473000	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
CY2018	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	-30212000	USD
CY2018	cnx	Other Revenue And Operating Income OtherRevenueAndOperatingIncome	116723000	USD
CY2018	us-gaap	Revenues Revenues	1730434000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	1226963000	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
CY2018	cnx	Segment Reporting Capital Expenditures SegmentReportingCapitalExpenditures	1116397000	USD
CY2020	us-gaap	Gain Loss On Oil And Gas Hedging Activity GainLossOnOilAndGasHedgingActivity	172982000	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
CY2020	us-gaap	Other Operating Income OtherOperatingIncome	17749000	USD
CY2019	us-gaap	Other Operating Income OtherOperatingIncome	13678000	USD
CY2018	us-gaap	Other Operating Income OtherOperatingIncome	26942000	USD
CY2020	us-gaap	Revenues Revenues	1257978000	USD
CY2019	us-gaap	Revenues Revenues	1922449000	USD
CY2018	us-gaap	Revenues Revenues	1730434000	USD
CY2020Q4	cnx	Drilling Cost DrillingCost	4965252000	USD
CY2019Q4	cnx	Drilling Cost DrillingCost	4688497000	USD
CY2020Q4	us-gaap	Capitalized Costs Support Equipment And Facilities CapitalizedCostsSupportEquipmentAndFacilities	2510916000	USD
CY2019Q4	us-gaap	Capitalized Costs Support Equipment And Facilities CapitalizedCostsSupportEquipmentAndFacilities	2463866000	USD
CY2020Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1253094000	USD
CY2019Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1208046000	USD
CY2020Q4	us-gaap	Capitalized Costs Wells And Related Equipment And Facilities CapitalizedCostsWellsAndRelatedEquipmentAndFacilities	1120061000	USD
CY2019Q4	us-gaap	Capitalized Costs Wells And Related Equipment And Facilities CapitalizedCostsWellsAndRelatedEquipmentAndFacilities	1042000000	USD
CY2020Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	725705000	USD
CY2019Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	755590000	USD
CY2020Q4	cnx	Capitalized Costs Other Gas Assets CapitalizedCostsOtherGasAssets	95734000	USD
CY2019Q4	cnx	Capitalized Costs Other Gas Assets CapitalizedCostsOtherGasAssets	73479000	USD
CY2020Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	10670762000	USD
CY2019Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	10231478000	USD
CY2020Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	3852593000	USD
CY2019Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	3317442000	USD
CY2020Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	6818169000	USD
CY2019Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	6914036000	USD
CY2020	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	16622000	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
CY2020	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	8060000	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
CY2020	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	432438000	USD
CY2019	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	1063945000	USD
CY2018	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	986419000	USD
CY2020	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	33644000	USD
CY2019	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	79855000	USD
CY2018	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	61604000	USD
CY2020	us-gaap	Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities	490764000	USD
CY2019	us-gaap	Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities	1205270000	USD
CY2018	us-gaap	Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities	1122892000	USD
CY2020	us-gaap	Results Of Operations Sales Revenue To Unaffiliated Enterprises ResultsOfOperationsSalesRevenueToUnaffiliatedEnterprises	896745000	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
CY2020	cnx	Realized Gain Loss On Hedging Activity RealizedGainLossOnHedgingActivity	461217000	USD
CY2019	cnx	Realized Gain Loss On Hedging Activity RealizedGainLossOnHedgingActivity	69780000	USD
CY2018	cnx	Realized Gain Loss On Hedging Activity RealizedGainLossOnHedgingActivity	-69720000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-288235000	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
CY2020	cnx	Gas Royalty Interestsand Purchased Gas Sales GasRoyaltyInterestsandPurchasedGasSales	105792000	USD
CY2019	cnx	Gas Royalty Interestsand Purchased Gas Sales GasRoyaltyInterestsandPurchasedGasSales	94027000	USD
CY2018	cnx	Gas Royalty Interestsand Purchased Gas Sales GasRoyaltyInterestsandPurchasedGasSales	65986000	USD
CY2020	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	1175519000	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
CY2020	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	40407000	USD
CY2018	cnx	Exploratory Wells Drilled Net Productive1 ExploratoryWellsDrilledNetProductive1	0	well
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
CY2020	us-gaap	Production Tax Expense ProductionTaxExpense	24196000	USD
CY2019	us-gaap	Production Tax Expense ProductionTaxExpense	27461000	USD
CY2018	us-gaap	Production Tax Expense ProductionTaxExpense	32750000	USD
CY2020	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	285683000	USD
CY2019	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	330539000	USD
CY2018	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	302933000	USD
CY2020	cnx	Results Of Operations Purchased Gas Costs ResultsOfOperationsPurchasedGasCosts	100902000	USD
CY2019	cnx	Results Of Operations Purchased Gas Costs ResultsOfOperationsPurchasedGasCosts	90553000	USD
CY2018	cnx	Results Of Operations Purchased Gas Costs ResultsOfOperationsPurchasedGasCosts	64817000	USD
CY2020	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	61849000	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
CY2020	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	0	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
CY2020	us-gaap	Results Of Operations Expense Other ResultsOfOperationsExpenseOther	14994000	USD
CY2019	us-gaap	Results Of Operations Expense Other ResultsOfOperationsExpenseOther	44380000	USD
CY2018	us-gaap	Results Of Operations Expense Other ResultsOfOperationsExpenseOther	12033000	USD
CY2020	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	501821000	USD
CY2019	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	508463000	USD
CY2018	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	493423000	USD
CY2020	us-gaap	Results Of Operations Expense From Oil And Gas Producing Activities ResultsOfOperationsExpenseFromOilAndGasProducingActivities	1029852000	USD
CY2019	us-gaap	Results Of Operations Expense From Oil And Gas Producing Activities ResultsOfOperationsExpenseFromOilAndGasProducingActivities	1513668000	USD
CY2018	us-gaap	Results Of Operations Expense From Oil And Gas Producing Activities ResultsOfOperationsExpenseFromOilAndGasProducingActivities	1001095000	USD
CY2020	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	145667000	USD
CY2019	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	320789000	USD
CY2018	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	612616000	USD
CY2020	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	42098000	USD
CY2019	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	149167000	USD
CY2018	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	120073000	USD
CY2020	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	103569000	USD
CY2019	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	171622000	USD
CY2018	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	492543000	USD
CY2020	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	511072000	Mcfe
CY2019	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	539149000	Mcfe
CY2018	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	507104000	Mcfe
CY2020	cnx	Development Wells Drilled Net Productive1 DevelopmentWellsDrilledNetProductive1	29.0	well
CY2019	cnx	Development Wells Drilled Net Productive1 DevelopmentWellsDrilledNetProductive1	75.7	well
CY2018	cnx	Development Wells Drilled Net Productive1 DevelopmentWellsDrilledNetProductive1	83.9	well
CY2020	cnx	Development Wells Drilled Net Nonproductive1 DevelopmentWellsDrilledNetNonproductive1	0	well
CY2018	cnx	Development Wells Drilled Net Nonproductive1 DevelopmentWellsDrilledNetNonproductive1	0	well
CY2019	cnx	Development Wells Drilled Net Nonproductive1 DevelopmentWellsDrilledNetNonproductive1	1.0	well
CY2020	cnx	Exploratory Wells Drilled Net Productive1 ExploratoryWellsDrilledNetProductive1	2.0	well
CY2019	cnx	Exploratory Wells Drilled Net Productive1 ExploratoryWellsDrilledNetProductive1	5.0	well
CY2018	srt	Exploratory Wells Drilled Net Nonproductive ExploratoryWellsDrilledNetNonproductive	0	well
CY2019	srt	Exploratory Wells Drilled Net Nonproductive ExploratoryWellsDrilledNetNonproductive	0	well
CY2020	srt	Exploratory Wells Drilled Net Nonproductive ExploratoryWellsDrilledNetNonproductive	0	well
CY2020Q4	cnx	Net Development Wells Drilled But Uncompleted NetDevelopmentWellsDrilledButUncompleted	23.0	well
CY2020Q4	cnx	Exploratory Wells Drilled But Uncompleted ExploratoryWellsDrilledButUncompleted	1.0	well
CY2020Q4	cnx	Net Developmental Wells Completed Awaiting Tie In To Production NetDevelopmentalWellsCompletedAwaitingTieInToProduction	2.0	well
CY2020Q4	srt	Oil And Gas Delivery Commitments And Contracts Remaining Contractual Volume OilAndGasDeliveryCommitmentsAndContractsRemainingContractualVolume	492500000	Mcf
CY2020Q4	srt	Gas And Oil Area Developed Gross GasAndOilAreaDevelopedGross	351537000	acre
CY2020Q4	srt	Gas And Oil Area Developed Net GasAndOilAreaDevelopedNet	351537000	acre
CY2020Q4	srt	Gas And Oil Area Undeveloped Gross GasAndOilAreaUndevelopedGross	43713000	acre
CY2020Q4	srt	Gas And Oil Area Undeveloped Net GasAndOilAreaUndevelopedNet	43713000	acre
CY2020Q4	cnx	Unproved Acreage Gross UnprovedAcreageGross	4986196000	acre
CY2020Q4	cnx	Gas And Oil Acreage Unproved Net GasAndOilAcreageUnprovedNet	3637982000	acre
CY2020Q4	cnx	Total Acreage Gross TotalAcreageGross	5381446000	acre
CY2020Q4	cnx	Total Acreage Net TotalAcreageNet	4033232000	acre
CY2020Q4	cnx	Proved Developed And Undeveloped Reserves Working Interest Percentage ProvedDevelopedAndUndevelopedReservesWorkingInterestPercentage	1
CY2020	cnx	Proved Undeveloped Reserves Period To Be Fully Developed ProvedUndevelopedReservesPeriodToBeFullyDeveloped	P5Y
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
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
CY2020	srt	Proved Developed And Undeveloped Reserve Revision Of Previous Estimate Energy ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy	740129000	Mcfe
CY2020	cnx	Proved Developedand Undeveloped Reserves Price Changes Energy ProvedDevelopedandUndevelopedReservesPriceChangesEnergy	-1351934000	Mcfe
CY2020	srt	Proved Developed And Undeveloped Reserve Extension And Discovery Energy ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy	2246968000	Mcfe
CY2020	srt	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	511072000	Mcfe
CY2020Q4	srt	Proved Developed And Undeveloped Reserve Net Energy ProvedDevelopedAndUndevelopedReserveNetEnergy	9549758000	Mcfe
CY2018Q4	srt	Proved Developed Reserves Boe1 ProvedDevelopedReservesBOE1	4494878000	Mcfe
CY2019Q4	srt	Proved Developed Reserves Boe1 ProvedDevelopedReservesBOE1	4838858000	Mcfe
CY2020Q4	srt	Proved Developed Reserves Boe1 ProvedDevelopedReservesBOE1	5199748000	Mcfe
CY2018Q4	srt	Proved Undeveloped Reserve Boe1 ProvedUndevelopedReserveBOE1	3386457000	Mcfe
CY2019Q4	srt	Proved Undeveloped Reserve Boe1 ProvedUndevelopedReserveBOE1	3586809000	Mcfe
CY2020Q4	srt	Proved Undeveloped Reserve Boe1 ProvedUndevelopedReserveBOE1	4350010000	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
CY2020	cnx	Proved Developed And Undeveloped Reserve Extensions And Discoveries ProvedDevelopedAndUndevelopedReserveExtensionsAndDiscoveries	70000000	Mcfe
CY2019	cnx	Proved Developed And Undeveloped Reserve Extensions And Discoveries ProvedDevelopedAndUndevelopedReserveExtensionsAndDiscoveries	77000000	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
CY2020	cnx	Proved Developedand Undeveloped Reserve Revisionof Previous Estimate For Increased Performance Energy ProvedDevelopedandUndevelopedReserveRevisionofPreviousEstimateForIncreasedPerformanceEnergy	579000000	Mcfe
CY2020	cnx	Proved Developed And Undeveloped Reserve Change Due To Change In Operating Costs Energy ProvedDevelopedAndUndevelopedReserveChangeDueToChangeInOperatingCostsEnergy	853000000	Mcfe
CY2020	cnx	Proved Developedand Undeveloped Reserve Revisionof Previous Estimate For Plan Changes Energy ProvedDevelopedandUndevelopedReserveRevisionofPreviousEstimateForPlanChangesEnergy	-677000000	Mcfe
CY2020Q4	cnx	Proved Developedand Undeveloped Reserve Reserves Reported For More Than Five Years Energy ProvedDevelopedandUndevelopedReserveReservesReportedForMoreThanFiveYearsEnergy	320987000	Mcfe
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	8984000	USD
CY2018Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	8178000	USD
CY2017Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	6388000	USD
CY2020	us-gaap	Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves	28336000	USD
CY2019	us-gaap	Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves	66409000	USD
CY2018	us-gaap	Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves	49213000	USD
CY2020	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	28258000	USD
CY2019	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	65603000	USD
CY2018	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	46614000	USD
CY2020	us-gaap	Capitalized Exploratory Well Cost Charged To Expense1 CapitalizedExploratoryWellCostChargedToExpense1	0	USD
CY2019	us-gaap	Capitalized Exploratory Well Cost Charged To Expense1 CapitalizedExploratoryWellCostChargedToExpense1	0	USD
CY2018	us-gaap	Capitalized Exploratory Well Cost Charged To Expense1 CapitalizedExploratoryWellCostChargedToExpense1	809000	USD
CY2020Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	9062000	USD
CY2019Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	8984000	USD
CY2018Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	8178000	USD
CY2020Q4	cnx	Number Of Wells Pending Determination Of Proved Reserves NumberOfWellsPendingDeterminationOfProvedReserves	1	well
CY2020Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	16577563000	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 Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	26610100000	USD
CY2020Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	6071763000	USD
CY2019Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	7903120000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	7730451000	USD
CY2020Q4	cnx	Revenues And Gain Loss On Hedging Activity RevenuesAndGainLossOnHedgingActivity	622131000	USD
CY2020Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	1957519000	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
CY2020Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	2235205000	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
CY2020Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	6313076000	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
CY2020Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	3677340000	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
CY2020Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	2635736000	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
CY2020	srt	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease	932000000	USD
CY2020	cnx	Development Costs Plugging And Abandonment Costs DevelopmentCostsPluggingAndAbandonmentCosts	402174000	USD
CY2020	cnx	Development Costs Plugging And Abandonment Costs Present Value On Discounted Basis DevelopmentCostsPluggingAndAbandonmentCostsPresentValueOnDiscountedBasis	18357000	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
CY2020	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-819247000	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
CY2020	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	719441000	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
CY2020	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	322820000	USD
CY2019	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-252796000	USD
CY2018	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	307030000	USD
CY2020	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	268196000	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
CY2020	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	434273000	USD
CY2019	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	739874000	USD
CY2018	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	844081000	USD
CY2020	srt	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-129642000	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
CY2020	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	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
CY2020	srt	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	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
CY2020	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-499316000	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
CY2020	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	138404000	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
CY2020	cnx	Standardized Measureof Discounted Future Net Cash Flowof Proved Oiland Gas Reserves Timingand Other StandardizedMeasureofDiscountedFutureNetCashFlowofProvedOilandGasReservesTimingandOther	390391000	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
CY2020	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	178829000	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
CY2020Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	2635736000	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
CY2020Q1	cnx	Revenues And Gain Loss On Hedging Activity RevenuesAndGainLossOnHedgingActivity	411401000	USD
CY2020Q2	cnx	Revenues And Gain Loss On Hedging Activity RevenuesAndGainLossOnHedgingActivity	145088000	USD
CY2020Q3	cnx	Revenues And Gain Loss On Hedging Activity RevenuesAndGainLossOnHedgingActivity	61609000	USD
CY2020Q1	cnx	Exploration Production Costs And Other Operating Expenses ExplorationProductionCostsAndOtherOperatingExpenses	149004000	USD
CY2020Q2	cnx	Exploration Production Costs And Other Operating Expenses ExplorationProductionCostsAndOtherOperatingExpenses	125548000	USD
CY2020Q3	cnx	Exploration Production Costs And Other Operating Expenses ExplorationProductionCostsAndOtherOperatingExpenses	142327000	USD
CY2020Q4	cnx	Exploration Production Costs And Other Operating Expenses ExplorationProductionCostsAndOtherOperatingExpenses	134775000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	-305222000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	-130487000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	-188793000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	195758000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-329086000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-145749000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-204698000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	195758000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.76
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.78
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.03
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.88
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.76
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.78
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.03
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.87
CY2019Q1	cnx	Revenues And Gain Loss On Hedging Activity RevenuesAndGainLossOnHedgingActivity	275234000	USD
CY2019Q2	cnx	Revenues And Gain Loss On Hedging Activity RevenuesAndGainLossOnHedgingActivity	602109000	USD
CY2019Q3	cnx	Revenues And Gain Loss On Hedging Activity RevenuesAndGainLossOnHedgingActivity	526681000	USD
CY2019Q4	cnx	Revenues And Gain Loss On Hedging Activity RevenuesAndGainLossOnHedgingActivity	504747000	USD
CY2019Q1	cnx	Exploration Production Costs And Other Operating Expenses ExplorationProductionCostsAndOtherOperatingExpenses	147928000	USD
CY2019Q2	cnx	Exploration Production Costs And Other Operating Expenses ExplorationProductionCostsAndOtherOperatingExpenses	153835000	USD
CY2019Q3	cnx	Exploration Production Costs And Other Operating Expenses ExplorationProductionCostsAndOtherOperatingExpenses	153833000	USD
CY2019Q4	cnx	Exploration Production Costs And Other Operating Expenses ExplorationProductionCostsAndOtherOperatingExpenses	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
CY2020Q1	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	61849000	USD
CY2020Q1	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	473045000	USD
CY2019Q4	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	327400000	USD
CY2019Q4	cnx	Impairment Of Oil And Gas Properties Unproved Properties ImpairmentOfOilAndGasPropertiesUnprovedProperties	119429000	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	125054000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	48000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	2004000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	0	USD
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	123098000	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

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2020 Q4 Form 10-K Financial Statement

#000107041221000016 Filed on February 09, 2021

Income Statement

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$CNX CNX Resources Corp Stock $cnx

2020 Q4 Form 10-K Financial Statement

#000107041221000016 Filed on February 09, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNX
CNX Resources Corp Stock $cnx