Credit Facility, Debt Covenant, Secured Leverage Ratio

No definition available.

Name:	cnx_CreditFacilityDebtCovenantSecuredLeverageRatio
Namespace Prefix:	cnx_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Interest Coverage Ratio

+ References

No definition available.

+ Details

Name:	cnx_DebtInstrumentInterestCoverageRatio
Namespace Prefix:	cnx_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest Ratio per Credit Facility Covenant

+ References

No definition available.

+ Details

Name:	cnx_InterestRatioPerCreditFacilityCovenant
Namespace Prefix:	cnx_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Letters Of Credit, Amount Outstanding

+ References

No definition available.

+ Details

Name:	cnx_LettersOfCreditAmountOutstanding
Namespace Prefix:	cnx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Availability Under Credit Facility, Percentage Of Aggregate Commitments

+ References

No definition available.

+ Details

Name:	cnx_LineOfCreditFacilityAvailabilityUnderCreditFacilityPercentageOfAggregateCommitments
Namespace Prefix:	cnx_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

minimum current ratio per credit facility

+ References

No definition available.

+ Details

Name:	cnx_Minimumcurrentratiopercreditfacility
Namespace Prefix:	cnx_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ShortTermDebtLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_VariableRateAxis=cnx_FederalFundsOpenRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=cnx_CNXMMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=cnx_OneMonthLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=cnx_SecuredOvernightFinancingRateSOFRMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Revolving Credit Facilities (Details) $ in Thousands	12 Months Ended
Revolving Credit Facilities (Details) $ in Thousands	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	May 05, 2022 USD ($)	Oct. 06, 2021 USD ($)
Federal Funds Open Rate
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	0.50%
Federal Funds Open Rate \| CNXM
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	0.50%
One-Month LIBOR
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	1.00%
One-Month LIBOR \| CNXM
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	1.00%
One-Month LIBOR \| Minimum
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	0.75%
One-Month LIBOR \| Minimum \| CNXM
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	1.00%
One-Month LIBOR \| Maximum
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	1.75%
One-Month LIBOR \| Maximum \| CNXM
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	2.00%
Secured Overnight Financing Rate (SOFR) \| Minimum
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	1.85%
Secured Overnight Financing Rate (SOFR) \| Minimum \| CNXM
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	2.10%
Secured Overnight Financing Rate (SOFR) \| Maximum
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	2.85%
Secured Overnight Financing Rate (SOFR) \| Maximum \| CNXM
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	3.10%
Revolving Credit Facility
Short-term Debt [Line Items]
Elected commitments	$ 1,350,000		$ 1,300,000
Maximum borrowing capacity			$ 2,250,000
Percentage of aggregate commitments available under credit facility	20.00%
Maximum net leverage ratio	3.50
Minimum current ratio	1.00
Borrowings outstanding	$ 52,050
Weighted average interest rate	7.64%
Letters of credit outstanding	$ 43,684	$ 171,272
Borrowings and issuance of letters of credit remaining capacity	1,254,266	1,128,728
Revolving Credit Facility \| CNXM
Short-term Debt [Line Items]
Maximum borrowing capacity				$ 600,000
Borrowings outstanding	$ 105,150	$ 153,700
Weighted average interest rate	7.50%	6.45%
Letters of credit outstanding		$ 30
Interest coverage ratio	2.50
Current borrowing capacity	$ 494,850	$ 446,270
Revolving Credit Facility \| Minimum \| CNXM
Short-term Debt [Line Items]
Maximum net leverage ratio	5.00
Revolving Credit Facility \| Maximum \| CNXM
Short-term Debt [Line Items]
Maximum net leverage ratio	5.25
Secured leverage ratio	3.25