XML 151 R127.htm IDEA: XBRL DOCUMENT
v3.20.4

Supplemental Gas Data (unaudited) - Producing Wells, Developed Acreage and Undeveloped Acreage (Details) well in Thousands, a in Thousands | Dec. 31, 2020 a well
--- | ---
Extractive Industries [Abstract] |
Working interest percentage | 100.00%
Gross(1) |
Proved Developed Acreage | a | 351,537
Proved Undeveloped Acreage | a | 43,713
Unproved Acreage | a | 4,986,196
Total Acreage | a | 5,381,446
Net |
Proved Developed Acreage | a | 351,537
Proved Undeveloped Acreage | a | 43,713
Unproved Acreage | a | 3,637,982
Total Acreage | a | 4,033,232
Working Interest |
Gross(1) |
Producing Gas Wells | well | 4,712
Producing Oil Wells | well | 0
Net |
Producing Gas Wells | well | 4,401
Producing Oil Wells | well | 0
Royalty Interest |
Gross(1) |
Producing Gas Wells | well | 1,810
Producing Oil Wells | well | 152
Net |
Producing Gas Wells | well | 0
Producing Oil Wells | well | 0

X
- Definition Gas and Oil Acreage, Unproved, Net + References No definition available. + Details
Name: | cnx_GasAndOilAcreageUnprovedNet
Namespace Prefix: | cnx_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Proved Developed And Undeveloped Reserves, Working Interest Percentage + References No definition available. + Details
Name: | cnx_ProvedDevelopedAndUndevelopedReservesWorkingInterestPercentage
Namespace Prefix: | cnx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total acreage + References No definition available. + Details
Name: | cnx_TotalAcreageGross
Namespace Prefix: | cnx_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total Acreage - Net + References No definition available. + Details
Name: | cnx_TotalAcreageNet
Namespace Prefix: | cnx_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition unproved acreage gross + References No definition available. + Details
Name: | cnx_UnprovedAcreageGross
Namespace Prefix: | cnx_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Wells And Acreage, Gross [Abstract] + References No definition available. + Details
Name: | cnx_WellsAndAcreageGrossAbstract
Namespace Prefix: | cnx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Wells And Acreage, Net [Abstract] + References No definition available. + Details
Name: | cnx_WellsAndAcreageNetAbstract
Namespace Prefix: | cnx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | srt_ExtractiveIndustriesAbstract
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Area assigned to productive oil and gas wells with working interest ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1208 -Paragraph (a) + Details
Name: | srt_GasAndOilAreaDevelopedGross
Namespace Prefix: | srt_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Area assigned to productive oil and gas wells representing summation of fractional ownership working interest to whole. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1208 -Paragraph (a) + Details
Name: | srt_GasAndOilAreaDevelopedNet
Namespace Prefix: | srt_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Leased area with working interest ownership on which oil and gas wells have not been drilled or completed that would permit production of economic quantities of oil and gas. Excludes area of undrilled acreage held by production under terms of lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1208 -Paragraph (b) + Details
Name: | srt_GasAndOilAreaUndevelopedGross
Namespace Prefix: | srt_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Leased area representing summation of fractional ownership working interest to whole on which oil and gas wells have not been drilled or completed that would permit production of economic quantities of oil and gas. Excludes area of undrilled acreage held by production under terms of lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1208 -Paragraph (b) + Details
Name: | srt_GasAndOilAreaUndevelopedNet
Namespace Prefix: | srt_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of producing gas wells and gas wells capable of production with working interest ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1208 -Paragraph (a) + Details
Name: | srt_ProductiveGasWellsNumberOfWellsGross
Namespace Prefix: | srt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of producing gas wells and gas wells capable of production representing summation of fractional ownership working interest to whole. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1208 -Paragraph (a) + Details
Name: | srt_ProductiveGasWellsNumberOfWellsNet
Namespace Prefix: | srt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of producing oil wells and oil wells capable of production with working interest ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1208 -Paragraph (a) + Details
Name: | srt_ProductiveOilWellsNumberOfWellsGross
Namespace Prefix: | srt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of producing oil wells and oil wells capable of production representing summation of fractional ownership working interest to whole. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1208 -Paragraph (a) + Details
Name: | srt_ProductiveOilWellsNumberOfWellsNet
Namespace Prefix: | srt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | cnx_ProducingWellsInterestAxis=cnx_WorkingInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cnx_ProducingWellsInterestAxis=cnx_RoyaltyInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |