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Revenue From Contracts With Customers - Narrative (Details) | 12 Months Ended
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Dec. 31, 2021
Revenue from Contract with Customer [Abstract] |
Payment terms for contract with customers | 25 days

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- Definition Contracts With Customers, Payment Terms + References No definition available. + Details
Name: | cnx_ContractsWithCustomersPaymentTerms
Namespace Prefix: | cnx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration