XML 146 R126.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Segment Information Industry Segment Results (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) segment | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 14, 2017
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of divisions | segment |  |  |  |  |  |  |  |  | 2 |  |  |
(Loss) Gain on Commodity Derivative Instruments |  |  |  |  |  |  |  |  | $ 376,105 | $ (30,212) | $ 206,930 |
Other Operating Income |  |  |  |  |  |  |  |  | 13,678 | 26,942 | 69,182 |
Total Revenue and Other Operating Income | $ 504,747 | $ 526,681 | $ 602,109 | $ 275,234 | $ 431,660 | $ 393,223 | $ 393,590 | $ 485,019 | 1,922,449 | 1,730,434 | 1,455,131 |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | 59,684 | 1,098,668 | 118,581 |
Segment Assets | 9,060,806 |  |  |  | 8,592,170 |  |  |  | 9,060,806 | 8,592,170 | 6,931,913 |
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 508,463 | 493,423 | 412,036 |
Capital Expenditures |  |  |  |  |  |  |  |  | 1,192,599 | 1,116,397 | 632,846 |
Equity in Earnings of Affiliates |  |  |  |  |  |  |  |  | 2,103 | 5,363 | 49,830 |
Natural Gas, NGLs and Oil Sales |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,364,325 | 1,577,937 | 1,125,224 |
Purchased Gas Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 94,027 | 65,986 | 53,795 |
Midstream Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 74,314 | 89,781 | 0 |
Direct Energy Business Marketing LLC |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 214,980 | 184,668 | 153,565 |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | 214,980 | 184,668 | 153,656 |
NJR Energy Services Company |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 147,540 | 219,472 | 147,595 |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | 147,540 | 219,472 | 147,595 |
Operating Segments |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,532,666 | 1,733,704 | 1,179,019 |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | 26,211 | 378,427 | (63,527) |
Investments in Unconsolidated Equity Affiliates | 16,710 |  |  |  | 18,663 |  |  |  | 16,710 | 18,663 | 197,921 |
Corporate, Non-Segment |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Loss) Gain on Commodity Derivative Instruments |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Other Operating Income |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | 33,473 | 720,241 | 182,108 |
Segment Assets | 78,708 |  |  |  | 166,679 |  |  |  | 78,708 | 166,679 | 540,690 |
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Capital Expenditures |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Corporate, Non-Segment | Natural Gas, NGLs and Oil Sales |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Corporate, Non-Segment | Purchased Gas Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Corporate, Non-Segment | Midstream Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 |  |
Intercompany Eliminations |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Loss) Gain on Commodity Derivative Instruments |  |  |  |  |  |  |  |  | 0 | 0 |  |
Other Operating Income |  |  |  |  |  |  |  |  | (379) | (276) |  |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | (233,089) | (168,569) |  |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | 0 | 0 |  |
Segment Assets | $ 6,331 |  |  |  | (12,223) |  |  |  | 6,331 | (12,223) |  |
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 0 | 0 |  |
Capital Expenditures |  |  |  |  |  |  |  |  | 0 | 0 |  |
Intercompany Eliminations | Natural Gas, NGLs and Oil Sales |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 |  |
Intercompany Eliminations | Purchased Gas Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 |  |
Intercompany Eliminations | Midstream Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | $ (232,710) | (168,293) |  |
Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  |  |  |  |  |  | 34.00% |  |  |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | $ 305,797 | 256,668 |  |
CNX Gathering |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest in equity method investment | 100.00% |  |  |  |  |  |  |  | 100.00% |  |  | 50.00%
Exploration and Production Equipment |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | segment |  |  |  |  |  |  |  |  | 4 |  |  |
Exploration and Production Equipment | Operating Segments |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Loss) Gain on Commodity Derivative Instruments |  |  |  |  |  |  |  |  | $ 376,105 | (30,212) | 206,930 |
Other Operating Income |  |  |  |  |  |  |  |  | 14,057 | 27,218 | 69,182 |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | 1,848,514 | 1,640,929 | 1,455,131 |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | (140,443) | 244,616 | (63,527) |
Segment Assets | $ 6,745,091 |  |  |  | 6,518,597 |  |  |  | 6,745,091 | 6,518,597 | 6,391,223 |
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 474,352 | 461,149 | 412,036 |
Capital Expenditures |  |  |  |  |  |  |  |  | 867,860 | 974,059 | 632,846 |
Exploration and Production Equipment | Operating Segments | Natural Gas, NGLs and Oil Sales |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,364,325 | 1,577,937 | 1,125,224 |
Exploration and Production Equipment | Operating Segments | Purchased Gas Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 94,027 | 65,986 | 53,795 |
Exploration and Production Equipment | Operating Segments | Midstream Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 |  |
Midstream | Operating Segments |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Loss) Gain on Commodity Derivative Instruments |  |  |  |  |  |  |  |  | 0 | 0 |  |
Other Operating Income |  |  |  |  |  |  |  |  | 0 | 0 |  |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | 307,024 | 258,074 |  |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | 166,654 | 133,811 | 0 |
Segment Assets | $ 2,230,676 |  |  |  | $ 1,919,117 |  |  |  | 2,230,676 | 1,919,117 |  |
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  | 34,111 | 32,274 |  |
Capital Expenditures |  |  |  |  |  |  |  |  | 324,739 | 142,338 |  |
Midstream | Operating Segments | Natural Gas, NGLs and Oil Sales |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 |  |
Midstream | Operating Segments | Purchased Gas Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 |  |
Midstream | Operating Segments | Midstream Revenue |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 307,024 | 258,074 |  |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Marcellus Shale |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Loss) Gain on Commodity Derivative Instruments |  |  |  |  |  |  |  |  | 47,475 | (40,444) | (30,336) |
Other Operating Income |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | 982,203 | 862,872 | 615,852 |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | 234,284 | 254,310 | 91,436 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Utica Shale |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Loss) Gain on Commodity Derivative Instruments |  |  |  |  |  |  |  |  | 14,943 | (19,882) | 1,367 |
Other Operating Income |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | 279,491 | 425,998 | 218,387 |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | 87,972 | 194,164 | 64,741 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Coalbed Methane |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Loss) Gain on Commodity Derivative Instruments |  |  |  |  |  |  |  |  | 7,335 | (8,767) | (9,589) |
Other Operating Income |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | 171,228 | 204,117 | 199,088 |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | 35,170 | 49,719 | 20,346 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Other Gas |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Loss) Gain on Commodity Derivative Instruments |  |  |  |  |  |  |  |  | 306,352 | 38,881 | 245,488 |
Other Operating Income |  |  |  |  |  |  |  |  | 14,057 | 27,218 | 69,182 |
Total Revenue and Other Operating Income |  |  |  |  |  |  |  |  | 415,592 | 147,942 | 421,804 |
Earnings (Loss) From Continuing Operations Before Income Tax |  |  |  |  |  |  |  |  | (497,869) | (253,577) | (240,050) |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Natural Gas, NGLs and Oil Sales | Marcellus Shale |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 934,728 | 903,316 | 646,188 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Natural Gas, NGLs and Oil Sales | Utica Shale |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 264,548 | 445,880 | 217,020 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Natural Gas, NGLs and Oil Sales | Coalbed Methane |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 163,893 | 212,884 | 208,677 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Natural Gas, NGLs and Oil Sales | Other Gas |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,156 | 15,857 | 53,339 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Purchased Gas Revenue | Marcellus Shale |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Purchased Gas Revenue | Utica Shale |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Purchased Gas Revenue | Coalbed Methane |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Purchased Gas Revenue | Other Gas |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 94,027 | 65,986 | $ 53,795 |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Midstream Revenue | Marcellus Shale |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 |  |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Midstream Revenue | Utica Shale |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 |  |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Midstream Revenue | Coalbed Methane |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 |  |
Reportable Subsegments | Exploration and Production Equipment | Operating Segments | Midstream Revenue | Other Gas |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |

X
- Definition Segment Reporting - Capital Expenditures + References No definition available. + Details
Name: | cnx_SegmentReportingCapitalExpenditures
Namespace Prefix: | cnx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
Name: | us-gaap_DepreciationDepletionAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Gain (loss) incurred in hedging activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 + Details
Name: | us-gaap_GainLossOnOilAndGasHedgingActivity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(12)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(f)) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570 + Details
Name: | us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
Name: | us-gaap_OtherOperatingIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118582676&loc=SL6759159-111685 + Details
Name: | us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_OilAndGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_OilAndGasPurchasedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_NaturalGasMidstreamMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=cnx_DirectEnergyBusinessMarketingLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=cnx_NJREnergyServicesCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=cnx_CNXGatheringLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_ExplorationAndProductionEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cnx_CNXMMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsConsolidationItemsAxis=us-gaap_ReportableSubsegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=cnx_MarcellusShaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=cnx_UticaShaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=cnx_CoalbedMethaneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=cnx_OtherGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |