Revenue From External Customers

No definition available.

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- Definition

Revenue from the sale of oil and gas which is sold by CNX on behalf of the royalty owner.

+ References

No definition available.

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- Definition

Segment Reporting - Capital Expenditures

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No definition available.

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- Definition

Segment Reporting - Intersegment Transfers

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No definition available.

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- 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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.18)

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- Definition

Revenue from transporting cargo and freight between locations.

+ References

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- 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

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- 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

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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- Definition

Revenue from sale of oil and gas purchased from other sources.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

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- Definition

Aggregate revenue from the sale of minerals and related products, and from rendering services such as exploration, development, mining, processing and providing mining support activities.

+ References

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- 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).

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Segment Information Industry Segment Results (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Sales-Outside									$ 3,356,525us-gaap_RevenueMineralSales	$ 3,015,551us-gaap_RevenueMineralSales	$ 3,122,550us-gaap_RevenueMineralSales
Sales-Purchased Gas									8,999us-gaap_RevenueFromPurchasedOilAndGas	6,531us-gaap_RevenueFromPurchasedOilAndGas	3,316us-gaap_RevenueFromPurchasedOilAndGas
Sales-Gas Royalty Interests									82,428cnx_RoyaltyInterestGasRevenue	63,202cnx_RoyaltyInterestGasRevenue	49,405cnx_RoyaltyInterestGasRevenue
Freight-Outside	5,597us-gaap_CargoAndFreightRevenue	2,497us-gaap_CargoAndFreightRevenue	3,946us-gaap_CargoAndFreightRevenue	10,109us-gaap_CargoAndFreightRevenue	9,945us-gaap_CargoAndFreightRevenue	9,579us-gaap_CargoAndFreightRevenue	9,660us-gaap_CargoAndFreightRevenue	12,253us-gaap_CargoAndFreightRevenue	28,148us-gaap_CargoAndFreightRevenue	35,438us-gaap_CargoAndFreightRevenue	107,079us-gaap_CargoAndFreightRevenue
Segment Reporting - Intersegment Transfers									0	0	0
Total Revenue and Other Income									3,726,804us-gaap_Revenues	3,299,685us-gaap_Revenues	3,677,526us-gaap_Revenues
Revenue From External Customers									3,476,100cnx_RevenueFromExternalCustomers	3,120,722cnx_RevenueFromExternalCustomers	3,282,350cnx_RevenueFromExternalCustomers
Earnings Before Income Taxes									183,124	46,075	406,687
Total Assets	11,759,530us-gaap_Assets		11,393,667us-gaap_Assets						11,759,530us-gaap_Assets	11,393,667us-gaap_Assets	12,997,594us-gaap_Assets
Depreciation, Depletion and Amortization									571,191	461,122	427,115
Segment Reporting - Capital Expenditures									1,493,425cnx_SegmentReportingCapitalExpenditures	1,496,056cnx_SegmentReportingCapitalExpenditures	1,245,497cnx_SegmentReportingCapitalExpenditures
Equity in Earnings of Affiliates									(49,791)	(33,133)	(27,048)
Investments in Unconsolidated Equity Affiliates	152,958us-gaap_EquityMethodInvestments		291,675us-gaap_EquityMethodInvestments						152,958us-gaap_EquityMethodInvestments	291,675us-gaap_EquityMethodInvestments
Total Reportable Business Segments
Segment Reporting Information [Line Items]
Earnings Before Income Taxes									597,161	342,779	648,016
Total Assets	11,471,946		10,682,752						11,471,946	10,682,752
Coal Segment [Member]
Segment Reporting Information [Line Items]
Sales-Outside									2,093,421	2,061,431	2,220,671
Sales-Purchased Gas									0	0	0
Sales-Gas Royalty Interests									0	0	0
Freight-Outside									28,148	35,438	107,079
Segment Reporting - Intersegment Transfers									0	0	0
Total Revenue and Other Income									2,121,569	2,096,869	2,327,750
Earnings Before Income Taxes									407,447	344,393	608,565
Total Assets	4,107,761		4,348,284						4,107,761	4,348,284	4,333,486
Depreciation, Depletion and Amortization									254,914	226,639	219,636
Segment Reporting - Capital Expenditures									380,311	455,078	696,058
Equity in Earnings of Affiliates									(32,216)	(14,684)	(9,562)
Investments in Unconsolidated Equity Affiliates	121,721		206,060						121,721	206,060	143,876
Gas
Segment Reporting Information [Line Items]
Sales-Outside									1,028,117	737,701	658,820
Sales-Purchased Gas									8,999	6,531	3,316
Sales-Gas Royalty Interests									82,428	63,202	49,405
Freight-Outside									0	0	0
Segment Reporting - Intersegment Transfers									2,458	3,168	1,622
Total Revenue and Other Income									1,122,002	810,602	713,163
Earnings Before Income Taxes									189,714	(1,614)	39,451
Total Assets	7,364,185		6,334,468						7,364,185	6,334,468	5,768,882
Depreciation, Depletion and Amortization									314,381	231,809	205,149
Segment Reporting - Capital Expenditures									1,103,656	968,607	532,636
Equity in Earnings of Affiliates									(18,913)	(18,045)	(17,318)
Investments in Unconsolidated Equity Affiliates	27,544		80,849						27,544	80,849	78,454
Other Segments [Member]
Segment Reporting Information [Line Items]
Sales-Outside									234,987	216,419	243,059
Sales-Purchased Gas									0	0	0
Sales-Gas Royalty Interests									0	0	0
Freight-Outside									0	0	0
Segment Reporting - Intersegment Transfers									78,229	127,553	142,014
Total Revenue and Other Income									313,216	343,972	385,073
Earnings Before Income Taxes									(32,821)	(17,201)	26,194
Total Assets	15,089		132,487						15,089	132,487	135,170
Depreciation, Depletion and Amortization									1,896	2,674	2,330
Segment Reporting - Capital Expenditures									9,458	72,371	16,803
Equity in Earnings of Affiliates									1,338	(403)
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales-Outside									0	0	0
Sales-Purchased Gas									0	0	0
Sales-Gas Royalty Interests									0	0	0
Freight-Outside									0	0	0
Segment Reporting - Intersegment Transfers									(80,687)	(130,721)	(143,636)
Total Revenue and Other Income									(80,687)	(130,721)	(143,636)
Earnings Before Income Taxes									(381,216)	(279,503)	(267,523)
Total Assets	272,495		578,428						272,495	578,428	2,760,056
Depreciation, Depletion and Amortization									0	0	0
Segment Reporting - Capital Expenditures									0	0	0
All Other [Member]
Segment Reporting Information [Line Items]
Equity in Earnings of Affiliates											(168)
Investments in Unconsolidated Equity Affiliates			1,750							1,750	500
Steam [Member] \| Coal Segment [Member]
Segment Reporting Information [Line Items]
Sales-Outside									1,616,989	1,357,337	1,323,679
Sales-Purchased Gas									0	0	0
Sales-Gas Royalty Interests									0	0	0
Freight-Outside									16,767	17,779	50,901
Segment Reporting - Intersegment Transfers									0	0	0
Total Revenue and Other Income									1,633,756	1,375,116	1,374,580
Earnings Before Income Taxes									426,540	310,467	337,681
Total Assets	2,014,636		1,982,195						2,014,636	1,982,195	1,766,144
Depreciation, Depletion and Amortization									162,367	120,754	119,082
Segment Reporting - Capital Expenditures									340,282	404,293	489,874
Low Volatile Metallurgical \| Coal Segment [Member]
Segment Reporting Information [Line Items]
Sales-Outside									297,088	450,033	505,682
Sales-Purchased Gas									0	0	0
Sales-Gas Royalty Interests									0	0	0
Freight-Outside									616	4,010	35,838
Segment Reporting - Intersegment Transfers									0	0	0
Total Revenue and Other Income									297,704	454,043	541,520
Earnings Before Income Taxes									11,608	89,470	176,765
Total Assets	360,422		389,372						360,422	389,372	425,010
Depreciation, Depletion and Amortization									47,021	54,725	48,491
Segment Reporting - Capital Expenditures									26,654	21,265	126,421
High Volatile Metallurgical \| Coal Segment [Member]
Segment Reporting Information [Line Items]
Sales-Outside									179,344	254,061	391,310
Sales-Purchased Gas									0	0	0
Sales-Gas Royalty Interests									0	0	0
Freight-Outside									10,765	13,649	20,340
Segment Reporting - Intersegment Transfers									0	0	0
Total Revenue and Other Income									190,109	267,710	411,650
Earnings Before Income Taxes									(30,701)	(55,544)	94,119
Total Assets	1,732,703		1,976,717						1,732,703	1,976,717	2,142,332
Depreciation, Depletion and Amortization									45,526	51,160	52,063
Segment Reporting - Capital Expenditures									13,375	29,520	79,763
Coalbed Methane \| Gas
Segment Reporting Information [Line Items]
Sales-Outside									344,842	335,730	379,595
Sales-Purchased Gas									0	0	0
Sales-Gas Royalty Interests									0	0	0
Freight-Outside									0	0	0
Segment Reporting - Intersegment Transfers									2,458	3,168	1,622
Total Revenue and Other Income									347,300	338,898	381,217
Earnings Before Income Taxes									91,672	81,260	125,970
Marcellus Shale \| Gas
Segment Reporting Information [Line Items]
Sales-Outside									473,141	251,846	134,080
Sales-Purchased Gas									0	0	0
Sales-Gas Royalty Interests									0	0	0
Freight-Outside									0	0	0
Segment Reporting - Intersegment Transfers									0	0	0
Total Revenue and Other Income									473,141	251,846	134,080
Earnings Before Income Taxes									151,617	79,462	29,546
Utica Shale [Member] \| Gas
Segment Reporting Information [Line Items]
Sales-Outside									88,195	4,370	400
Sales-Purchased Gas									0	0	0
Sales-Gas Royalty Interests									0	0	0
Freight-Outside									0	0	0
Segment Reporting - Intersegment Transfers									0	0	0
Total Revenue and Other Income									88,195	4,370	400
Earnings Before Income Taxes									41,064	(3,980)	(2,127)
Other Gas \| Gas
Segment Reporting Information [Line Items]
Sales-Outside									121,939	145,755	144,745
Sales-Purchased Gas									8,999	6,531	3,316
Sales-Gas Royalty Interests									82,428	63,202	49,405
Freight-Outside									0	0	0
Segment Reporting - Intersegment Transfers									0	0	0
Total Revenue and Other Income									213,366	215,488	197,466
Earnings Before Income Taxes									(94,639)	(158,356)	(113,938)
XCoal Energy and Resources [Member]
Segment Reporting Information [Line Items]
Total Revenue and Other Income									344,617	495,242	382,843
Duke Energy [Member]
Segment Reporting Information [Line Items]
Total Revenue and Other Income									$ 394,849