CNX Resources (CNX) 10-Q 1 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 16, 2014
Document Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Entity Registrant Name	'CONSOL Energy Inc	'
Entity Central Index Key	'0001070412	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	230,166,816

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]	'	'	'	'
Natural Gas, NGLs and Oil Sales	$229,743	$171,236	$496,041	$339,078
Coal Sales	536,298	505,060	1,070,979	1,052,969
Other Revenue, Net	70,087	65,218	139,374	133,902
Gas Royalty Interests and Purchased Gas Sales	19,739	18,434	49,958	33,996
Freight-Outside	10,109	9,660	20,054	21,913
Other Income (including equity earnings)	69,977	28,520	125,031	56,907
Gain (Loss) on Disposition of Assets	1,417	30,039	5,086	32,345
Total Revenue and Other Income	937,370	828,167	1,906,523	1,671,110
Oil and Gas Property, Lease Operating Expense	26,374	25,221	55,617	47,235
Gas Gathering, Transportation, Marketing and Processing Costs	57,796	48,871	111,578	97,303
Production Tax Expense	10,145	7,409	20,331	11,978
E&P Direct Administration and Selling	13,503	11,803	25,156	22,889
E&P Depreciation, Depletion, and Amortization	71,499	52,846	143,228	105,834
Exploration and Production Costs	4,624	10,406	7,723	20,895
Production Royalty Interests and Purchased Gas Costs	16,672	14,595	42,768	27,360
Other Expenses	21,012	22,557	47,176	47,950
Results of Operations, General and Administrative Related to Oil and Gas Producing Activities	15,517	10,472	32,881	19,062
Oil and Gas Production Expense	237,142	204,180	486,458	400,506
Operating Expenses	347,541	329,934	674,390	664,949
Taxes, Miscellaneous	27,603	26,438	54,091	54,877
Direct Administration, Selling and Other Costs	11,816	12,252	23,110	23,136
Coal Depreciation, Depletion, Amortization	65,086	55,247	121,149	112,437
Freight Expense	10,109	9,660	20,054	21,913
General and Administrative Expense	10,450	10,038	22,963	19,339
Other Cost and Expense, Operating	12,035	11,996	31,330	31,911
Cost of Coal Products and Services	484,640	455,565	947,087	928,562
Other Nonoperating Expense	99,079	73,872	173,628	196,908
Other General and Administrative Expense	428	470	834	893
Depreciation, Depletion and Amortization, Nonproduction	1,314	1,436	2,638	2,836
Gains (Losses) on Extinguishment of Debt	74,277	0	74,277	0
Interest Expense	64,211	54,517	115,142	107,894
Other General Expense	239,309	130,295	366,519	308,531
Total Costs	961,091	790,040	1,800,064	1,637,599
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-23,721	38,127	106,459	33,511
Income Tax Expense (Benefit)	1,214	29,565	9,703	28,673
Income (Loss) from Continuing Operations Attributable to Parent	-24,935	8,562	96,756	4,838
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	-21,375	-5,687	-19,472
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-24,935	-12,813	91,069	-14,634
Net Income (Loss) Attributable to Noncontrolling Interest	0	-287	0	-544
Net Income (Loss)	($24,935)	($12,526)	$91,069	($14,090)

Consolidated_Statements_of_Inc1

Consolidated Statements of Income Earnings Per Share (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Income (Loss) from Continuing Operations, Per Basic Share	($0.11)	$0.04	$0.42	$0.02
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	$0	($0.09)	($0.02)	($0.08)
Earnings Per Share, Basic	($0.11)	($0.05)	$0.40	($0.06)
Income (Loss) from Continuing Operations, Per Diluted Share	($0.11)	$0.04	$0.42	$0.02
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	$0	($0.09)	($0.03)	($0.08)
Earnings Per Share, Diluted	($0.11)	($0.05)	$0.39	($0.06)
Common Stock, Dividends, Per Share, Cash Paid	$0.06	$0.13	$0.13	$0.13

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest [Abstract]	'	'	'	'
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	($24,935)	($12,813)	$91,069	($14,634)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent [Abstract]	'	'	'	'
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	-3,798	42,904	1,321	88,661
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	-12,218	45,749	-59,183	27,154
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	6,951	-9,528	23,264	-32,241
Other Comprehensive Income (Loss), Net of Tax	-9,065	79,125	-34,598	83,574
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	-34,000	66,312	56,471	68,940
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	0	-287	0	-544
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	($34,000)	$66,599	$56,471	$69,484

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parentheticals) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Other Comprehensive Income (Loss), Tax	($6,642)	$8,560	($17,593)	$22,526
Adjustment For Actuarially Determined Liabilities [Member]	'	'	'	'
Other Comprehensive Income (Loss), Tax	2,214	-26,489	-771	-54,739
Cash Flow Hedging [Member]	'	'	'	'
Other Comprehensive Income (Loss), Tax	$8,027	($29,484)	$38,883	($17,500)

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current Assets:	'	'
Cash and Cash Equivalents	$147,393	$327,420
Accounts and Notes Receivable:	'	'
Trade	275,431	332,574
Notes, Loans and Financing Receivable, Net, Current	1,328	25,861
Other Receivables	390,484	243,973
Inventories	148,005	157,914
Deferred Income Taxes	137,716	211,303
Recoverable Income Taxes	47,060	10,705
Prepaid Expenses	78,438	135,842
Total Current Assets	1,225,855	1,445,592
Property, Plant and Equipment:	'	'
Property, Plant and Equipment	14,160,967	13,578,509
Less-Accumulated Depreciation, Depletion and Amortization	4,384,209	4,136,247
Total Property, Plant and Equipment-Net	9,776,758	9,442,262
Other Assets:	'	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	352,187	291,675
Notes, Loans and Financing Receivable, Net, Noncurrent	0	125
Other	211,847	214,013
Total Other Assets	564,034	505,813
Total Assets	11,566,647	11,393,667
Current Liabilities:	'	'
Accounts Payable	504,009	514,580
Current Portion of Long-Term Debt	12,127	11,455
Other Accrued Liabilities	554,476	565,697
Liabilities of Disposal Group, Including Discontinued Operation, Current	13,054	28,239
Total Current Liabilities	1,083,666	1,119,971
Long-Term Debt:	'	'
Long-Term Debt	3,214,913	3,115,963
Capital Lease Obligations	44,468	47,596
Total Long-Term Debt	3,259,381	3,163,559
Deferred Credits and Other Liabilities	'	'
Deferred Tax Liabilities, Net, Noncurrent	291,928	242,643
Postretirement Benefits Other Than Pensions	959,034	961,127
Pneumoconiosis Benefits	111,519	111,971
Mine Closing	320,902	320,723
Gas Well Closing	180,097	175,603
Workers' Compensation	73,406	71,468
Salary Retirement	58,962	48,252
Reclamation	35,779	40,706
Other	132,315	131,355
Total Deferred Credits and Other Liabilities	2,163,942	2,103,848
TOTAL LIABILITIES	6,506,989	6,387,378
Stockholders' Equity:	'	'
Common Stock, $.01 Par Value; 500,000,000 Shares Authorized, 230,165,816 Issued and Outstanding at June 30, 2014; 229,145,736 Issued and Outstanding at December 31, 2013	2,305	2,294
Capital in Excess of Par Value	2,405,728	2,364,592
Preferred Stock, 15,000,000 shares authorized, None issued and outstanding	0	0
Retained Earnings	3,011,340	2,964,520
Accumulated Other Comprehensive Loss	-359,715	-325,117
Stockholders' Equity Attributable to Parent	5,059,658	5,006,289
TOTAL LIABILITIES AND EQUITY	$11,566,647	$11,393,667

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parentheticals) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Common Stock [Member]	'	'
Common Stock, Par or Stated Value Per Share	$0.01	$0.01
Common Stock, Shares Authorized	500,000,000	500,000,000
Common Stock, Shares, Issued	230,165,816	229,145,736
Common Stock, Shares, Outstanding	230,165,816	229,145,736
Treasury Stock, Shares	0	0
Preferred Stock [Member]	'	'
Preferred Stock, Shares Authorized	15,000,000	15,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings (Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total CONSOL Energy Inc. Stockholders' Equity [Member]
In Thousands, unless otherwise specified
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2013	'	$2,294	$2,364,592	$2,964,520	($325,117)	$5,006,289
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	91,069	0	0	91,069	0	91,069
Other Comprehensive Income (Loss), Net of Tax	-34,598	0	0	0	-34,598	-34,598
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	56,471	0	0	91,069	-34,598	56,471
Proceeds from Issuance of Common Stock	13,234	11	13,223	0	0	13,234
Stock Issued During Period, Value, Treasury Stock Reissued	'	0	0	-15,516	0	-15,516
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	'	0	2,413	0	0	2,413
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	'	0	25,500	0	0	25,500
Dividends, Cash	'	0	0	-28,733	0	-28,733
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Jun. 30, 2014	'	$2,305	$2,405,728	$3,011,340	($359,715)	$5,059,658

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$91,069	($14,634)
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:	'	'
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	5,687	19,472
Depreciation, Depletion and Amortization	267,015	221,107
Stock-Based Compensation	25,500	34,647
(Gain) Loss on Sale of Assets	-5,086	-32,345
Gains (Losses) on Extinguishment of Debt	74,277	0
Deferred Income Taxes	13,785	6,998
Equity in Earnings of Affiliates	21,512	16,667
Changes in Operating Assets:	'	'
Accounts and Notes Receivable	-52,920	25,360
Inventories	9,909	19,772
Prepaid Expenses	24,529	25,359
Changes in Other Assets	13,427	28,070
Changes in Operating Liabilities:	'	'
Accounts Payable	53,371	-13,470
Increase (Decrease) in Interest Payable, Net	-10,483	-73
Other Operating Liabilities	74,714	-4,173
Other	14,737	6,523
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	578,019	305,946
Cash Provided by (Used in) Operating Activities, Discontinued Operations	-20,872	87,444
Net Cash Provided by Operating Activities	557,147	393,390
Investing Activities:	'	'
Capital Expenditures	-819,295	-707,452
Increase (Decrease) in Restricted Cash	0	68,673
Proceeds from Sale of Productive Assets	133,075	107,626
Net Investment in Equity Affiliates	-39,000	-16,600
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	-725,220	-547,753
Cash Provided by (Used in) Investing Activities, Discontinued Operations	0	82,627
Net Cash Used in Investing Activities	-725,220	-465,126
Financing Activities:	'	'
(Payments on) Proceeds from Short-Term Borrowings	-11,736	173,000
Payments on Miscellaneous Borrowings	-3,167	-29,964
Proceeds from Issuance of Long-term Debt	1,600,000	0
Proceeds from Long-Term Borrowings	-1,583,965	0
Payments on Securitzation Facility	0	2,873
Tax Benefit from Stock-Based Compensation	2,413	2,185
Dividends Paid	-28,733	-28,601
Proceeds from Issuance of Common Stock	13,234	2,497
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	-11,954	121,990
Cash Provided by (Used in) Financing Activities, Discontinued Operations	0	-198
Net Cash (Used in) Provided by Financing Activities	-11,954	121,792
Net Increase in Cash and Cash Equivalents	-180,027	50,056
Cash and Cash Equivalents at Beginning of Period	327,420	21,862
Cash and Cash Equivalents at End of Period	$147,393	$71,918

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Presentation	'
	BASIS OF PRESENTATION:
	The accompanying Unaudited Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and six months ended June 30, 2014 are not necessarily indicative of the results that may be expected for future periods.
	The balance sheet at December 31, 2013 has been derived from the Audited Consolidated Financial Statements at that date but does not include all the notes required by generally accepted accounting principles for complete financial statements. For further information, refer to the Consolidated Financial Statements and related notes for the year ended December 31, 2013 included in CONSOL Energy Inc.'s Form 10-K.
	Certain amounts in prior periods have been reclassified to conform with the report classifications of the year ended December 31, 2013, with no effect on previously reported net income or stockholders' equity.
	Basic earnings per share are computed by dividing net income (loss) attributable to shareholders by the weighted average shares outstanding during the reporting period. Dilutive earnings per share are computed similarly to basic earnings per share except that the weighted average shares outstanding are increased to include additional shares from stock options, performance stock options, CONSOL stock units, and restricted and performance share units, if dilutive. The number of additional shares is calculated by assuming that outstanding stock options and performance share options were exercised, that outstanding restricted stock units, performance share units, and CONSOL stock units were released, and that the proceeds from such activities were used to acquire shares of common stock at the average market price during the reporting period. CONSOL Energy Inc. (CONSOL Energy or the Company) includes the impact of pro forma deferred tax assets in determining potential windfalls and shortfalls for purposes of calculating assumed proceeds under the treasury stock method. The table below sets forth the share-based awards that have been excluded from the computation of the diluted earnings per share because their effect would be anti-dilutive:
		Three Months Ended June 30,							Six Months Ended June 30,
		2014			2013				2014			2013
	Anti-Dilutive Options	4,123,949			4,845,029				359,488			4,845,029
	Anti-Dilutive Restricted Stock Units	1,265,237			1,383,908				—			1,383,908
	Anti-Dilutive Performance Share Units	523,357			83,356				—			83,356
	Anti-Dilutive Performance Share Options	802,804			602,101				—			602,101
		6,715,347			6,914,394				359,488			6,914,394
	The table below sets forth the share-based awards that have been exercised or released:
		Three Months Ended June 30,						Six Months Ended June 30,
		2014		2013				2014		2013
	Options	382,773		160,119				648,112		245,113
	Restricted Stock Units	56,403		89,632				390,802		568,141
	Performance Share Units	—		—				378,971		159,228
		439,176		249,751				1,417,885		972,482
	The weighted average exercise price per share of the options exercised during the three months ended June 30, 2014 and 2013 was $21.57 and $9.90, respectively. The weighted average exercise price per share of the options exercised during the six months ended June 30, 2014 and 2013 was $20.41 and $10.16, respectively.
	The computations for basic and dilutive earnings per share are as follows:
		Three Months Ended June 30,								Six Months Ended June 30,
		2014				2013				2014				2013
	(Loss) Income from Continuing Operations	$	(24,935	)		$	8,562			$	96,756			$	4,838
	(Loss) Income from Discontinuing Operations	—				(21,375			)	(5,687			)	(19,472		)
	Less: Net Loss Attributable to Noncontrolling Interest	—				(287			)	—				(544		)
	Net (Loss) Income Attributable to CONSOL Energy Inc. Shareholders	$	(24,935	)		$	(12,526		)	$	91,069			$	(14,090	)
	Weighted average shares of common stock outstanding:
	Basic	230,061,395				228,721,980				229,795,193				228,520,886
	Effect of stock-based compensation awards	—				—				1,595,988				—
	Dilutive	230,061,395				228,721,980				231,391,181				228,520,886
	Earnings per share:
	Basic (Continuing Operations)	$	(0.11	)		$	0.04			$	0.42			$	0.02
	Basic (Discontinuing Operations)	—				(0.09			)	(0.02			)	(0.08		)
	Total Basic	$	(0.11	)		$	(0.05		)	$	0.4			$	(0.06	)
	Dilutive (Continuing Operations)	$	(0.11	)		$	0.04			$	0.42			$	0.02
	Dilutive (Discontinuing Operations)	—				(0.09			)	(0.03			)	(0.08		)
	Total Dilutive	$	(0.11	)		$	(0.05		)	$	0.39			$	(0.06	)
	Changes in Accumulated Other Comprehensive Income / (Loss) by component, net of tax, were as follows:
		Gains and Losses on Cash Flow Hedges				Postretirement Benefits				Total
	Balance at December 31, 2013	$	42,493			$	(367,610		)	$	(325,117		)
	Other comprehensive income before reclassifications	(59,183		)		(22,133			)	(81,316			)
	Amounts reclassified from accumulated other comprehensive income	23,264				23,454				46,718
	Current period other comprehensive income	(35,919		)		1,321				(34,598			)
	Balance at June 30, 2014	$	6,574			$	(366,289		)	$	(359,715		)
	The following table shows the reclassification of adjustments out of Accumulated Other Comprehensive Loss:
		Three Months Ended June 30,								Six Months Ended June 30,
		2014				2013				2014				2013
	Derivative Instruments (Note 13)
	Natural gas price swaps and options	$	13,593			$	(18,088		)	$	40,857			$	(54,767	)
	Tax (expense) benefit	(6,642		)		8,560				(17,593			)	22,526
	Net of tax	$	6,951			$	(9,528		)	$	23,264			$	(32,241	)
	Actuarially Determined Long-Term Liability Adjustments*(Note 4 and Note 5)
	Amortization of prior service costs	$	(2,542	)		$	(8,211		)	$	(5,084		)	$	(16,423	)
	Recognized net actuarial loss	10,861				23,559				21,507				48,747
	Settlement loss	20,707				5,087				20,707				32,202
	Total	29,026				20,435				37,130				64,526
	Tax expense	(10,691		)		(7,800			)	(13,676			)	(24,631		)
	Net of tax	$	18,335			$	12,635			$	23,454			$	39,895

Acquisitions_and_Dispositions

Acquisitions and Dispositions	6 Months Ended
	Jun. 30, 2014
ACQUISITIONS AND DISPOSITIONS: [Abstract]	'
Acquisitions and Dispositions:	'
	ACQUISITIONS AND DISPOSITIONS:
	In March 2014, CONSOL Energy completed a sale-leaseback of longwall shields for the Harvey Mine (formerly the BMX Mine). Cash proceeds for the sale offset the basis of $75,357; therefore, no gain or loss was recognized on the sale. The lease has been accounted for as an operating lease. The lease term is five years.
	In December 2013, CONSOL Energy completed the sale of its Consolidation Coal Company (CCC) subsidiary, which includes all five of its longwall coal mines in West Virginia, to a subsidiary of Murray Energy Corporation (Murray Energy). CONSOL Energy retained overriding royalty interests in certain reserves sold in the transaction. Murray Energy also assumed $2,050,656 of CONSOL Energy's employee benefit obligations valued as of December 5, 2013 and its UMWA 1974 Pension Trust obligations. Murray Energy is primarily liable for all 1993 Coal Act liabilities. Cash proceeds of $825,285 were received related to this transaction, which were net of $24,715 in transaction fees. Proceeds are subject to adjustments related to working capital. A pre-tax gain of $1,035,346 was included in Income from Discontinued Operations on the Consolidated Statement of Income. In the first quarter of 2014, there was a pre-tax reduction in gain on sale of $7,044 related to the estimated working capital adjustment and various other miscellaneous items. Final settlement of working capital adjustments are currently being evaluated and are not expected to be material. For all periods presented in the accompanying Consolidated Statements of Income, the sale of CCC was classified as discontinued operations. There were no other active businesses classified as discontinued operations in the presented periods.
	In December 2013, CONSOL Energy acquired the gas drilling rights to approximately 90,000 contiguous acres from Dominion Transmission, a unit of Dominion Resources. The acreage, which is associated with Dominion’s Fink-Kennedy, Lost Creek, and Racket Newberne gas storage fields in West Virginia, lies in the northern portion of Lewis County and the southern portion of Harrison County. CONSOL Energy anticipates that over one-half of the acres will have wet gas. CONSOL Energy has acquired the gas rights to both the Marcellus Shale and the Upper Devonian formations in the storage fields. Consideration of up to $190,000 will be paid by CONSOL Energy in two installments: 50% was paid at closing and the balance is due over time as the acres are drilled. In addition, CONSOL Energy will pay an overriding royalty to Dominion Resources based on a sliding scale. With respect to production from this area, CONSOL Energy has committed to be an anchor shipper on Dominion’s transmission system for 250,000 Dth/d with a primary term of 15 years. CONSOL Energy paid $91,243 in 2013 related to this transaction. In the six months ended June 30, 2014, CONSOL Energy made an additional bonus payment of $16,000 to Dominion Transmission. Noble Energy, our joint venture partner, acquired 50% of the acres and reimbursed CONSOL Energy for 50% of the associated costs.
	In June 2013, CONSOL Energy completed the sale of Potomac coal reserves in Grant and Tucker Counties in West Virginia. Cash proceeds for the sale were $25,000. A gain of $24,663 was included in Other Income in the Consolidated Statement of Income.
	In April 2013, the Company and the Commonwealth of Pennsylvania (Commonwealth) entered into a Settlement Agreement and Release Settlement settling all of the Commonwealth's claims regarding the Ryerson Park Dam (Dam) and the Ryerson Park Lake (Lake). The Settlement provides in part for the payment to the Commonwealth of $36,000 for use to rebuild the Dam and restore the Lake with $13,728 of the settlement amount credited to lease bonus and royalty payments on the Commonwealth's Marcellus gas interests within the Park, subject to the Company's agreement to extract the gas from surface facilities located outside of the boundaries of the Park.  The Settlement also provides in part for the conveyance by the Company to the Commonwealth of eight surface parcels (Parcels) containing approximately 506 acres of land adjoining the Park after the Parcels are no longer needed for the Company's operations and the conveyance by the Commonwealth to the Company of certain coal and mining rights in an area of the Bailey Mine where a mining permit application is currently pending.
	In March 2013, CNX Gas Company LLC (CNX Gas Company), a wholly owned subsidiary of CONSOL Energy, completed negotiations with the Allegheny County Airport Authority, which operates the Pittsburgh International Airport and the Allegheny County Airport, for the lease of the oil and gas rights on approximately 9.3 thousand acres.  A majority of these contiguous acres are in the liquids area of the Marcellus Shale play. CNX Gas Company paid $46,315 as an up-front bonus payment at closing. Approximately 7.6% of the bonus payment was placed into escrow while negotiations continue for a portion of the acres associated with the Allegheny County Airport and other acres that have potentially defective title. CNX Gas Company must spud a well by February 21, 2015 and proceed with due diligence to complete the well or the lease terminates and CNX Gas Company foregoes the bonus. Our joint venture partner, Noble Energy, acquired a 50% undivided interest in the acreage and has reimbursed CNX Gas Company for 50% of the associated acquisition costs during the year ended December 31, 2013.
	In January 2013, CONSOL Energy completed a sale-leaseback of longwall shields for the Bailey Mine. Cash proceeds for the sale were $71,166. A loss of $358 was recognized due to transaction fees and is included in Other Income in the Consolidated Statement of Income. The lease has been accounted for as an operating lease. The lease term is five years.

Other_Income_Notes

Other Income (Notes)	6 Months Ended
	Jun. 30, 2014
Component of Operating Income [Abstract]	'
Other Income and Other Expense Disclosure [Text Block]	'
		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
	Coal Contract Settlement	$	30,000	$	—	$	30,000	$	—
	Rental Income	10,697		1,111		25,605		1,884
	Equity in Earnings of Affiliates	14,062		11,869		21,512		16,666
	Gathering Revenue	2,020		733		20,750		5,097
	Royalty Income	4,476		4,931		9,755		8,757
	Bailey Belt Settlement	4,275		—		4,275		—
	Right of Way Issuance	513		25		2,413		1,708
	Interest Income	676		4,477		1,300		11,401
	Business Interruption Insurance	—		—		—		2,700
	Other	3,258		5,374		9,421		8,694
	Total Other Income	$	69,977	$	28,520	$	125,031	$	56,907

Pension_and_OPEB_Periodic_Cost

Pension and OPEB - Periodic Cost	6 Months Ended
	Jun. 30, 2014
PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS NET PERIODIC BENEFIT COSTS: [Abstract]	'
Components of Pension and Other Postretirement Benefit Plans:	'
	COMPONENTS OF PENSION AND OTHER POST-EMPLOYMENT BENEFIT (OPEB) PLANS NET PERIODIC BENEFIT COSTS:
	Components of net periodic costs (benefits) for the three and six months ended June 30 are as follows:
		Pension Benefits												Other Post-Employment Benefits
		Three Months Ended						Six Months Ended						Three Months Ended						Six Months Ended
		June 30,						June 30,						June 30,						June 30,
		2014			2013			2014			2013			2014			2013			2014			2013
	Service cost	$	4,483		$	5,581		$	8,791		$	11,287		$	2,331		$	4,849		$	4,663		$	9,698
	Interest cost	8,993			8,909			18,144			17,752			12,097			29,619			24,194			59,237
	Expected return on plan assets	(12,765		)	(12,711		)	(25,512		)	(24,855		)	—			—			—			—
	Amortization of prior service credits	(346		)	(407		)	(692		)	(815		)	(2,196		)	(7,804		)	(4,392		)	(15,608		)
	Recognized net actuarial loss	6,106			10,547			11,997			22,722			6,369			17,595			12,737			35,190
	Settlement loss	20,707			5,087			20,707			32,202			—			—			—			—
	Net periodic benefit cost	$	27,178		$	17,006		$	33,435		$	58,293		$	18,601		$	44,259		$	37,202		$	88,517
	Expenses attributable to discontinued operations included in net periodic cost above were $2,517 and $5,380 for the three and six months ended June 30, 2013, respectively, for the Pension Plans; and were $25,504 and $50,898 for the three and six months ended June 30, 2013, respectively, for the Other Post-Employment Benefit Plan.
	For the six months ended June 30, 2014, $16,387 was paid to the pension trust from operating cash flows. Currently, depending upon asset values and asset returns held in the trust, we expect to contribute an additional $9,000 to the pension trust in 2014. Net periodic benefit costs are allocated to Exploration and Production Costs, Direct Administrative and Selling Expenses and Coal Costs, Operating and Other Costs in the Consolidated Statements of Income.
	According to the Defined Benefit Plans Topic of the Financial Accounting Standards Board (FASB) Accounting Standards Codification, if the lump sum distributions made during a plan year, which for CONSOL Energy is January 1 to December 31, exceed the total of the projected service cost and interest cost for the plan year, settlement accounting is required. Lump sum payments exceeded this threshold during the three and six months ended June 30, 2014. Accordingly, CONSOL Energy recognized settlement expense of $20,707 for the three and six months ended June 30, 2014 in Other Costs - Miscellaneous Operating Expense in the Consolidated Statements of Income. The settlement charges represented a pro rata portion of the net unrecognized loss based on the percentage reduction in the projected benefit obligation due to the lump sum payments. The settlement accounting was triggered in May 2014, resulting in a remeasurement at May 31. Additional lump sum distributions during June 2014 resulted in another remeasurement at June 30, 2014. The May 31 and June 30, 2014 remeasurements used a discount rate of 4.26% at May 31 and June 30, 2014, a decrease from 4.87% used at December 31, 2013. The May remeasurement increased the pension liability by $41,527. The May settlement and corresponding remeasurement of the pension plan resulted in a decrease of $14,193 in Other Comprehensive Income, net of $8,276 in deferred taxes. The June remeasurement decreased the pension liability by $6,490. The June settlement and corresponding remeasurement of the pension plan resulted in an increase of $5,141 in Other Comprehensive Income, net of $2,998 in deferred taxes. If CONSOL Energy incurs additional lump sum distributions from the plan in 2014, additional settlement charges will be recorded.
	Lump sum payments also exceeded the settlement threshold during the three and six months ended June 30, 2013. Accordingly, CONSOL Energy recognized settlement expense of $5,087 and $32,202 for the three and six months ended June 30, 2013, respectively, in Other Costs - Miscellaneous Operating Expense in the Consolidated Statements of Income. The settlement charges represented a pro rata portion of the net unrecognized loss based on the percentage reduction in the projected benefit obligation due to the lump sum payments. The 2013 settlement charges also resulted in a remeasurement of the pension plan at June 30 and March 31, 2013. The June 30, 2013 remeasurement resulted in a change to the discount rate to 4.84% from 4.12% at March 31, 2013. The June remeasurement reduced the pension liability by $48,957. The June settlement and corresponding remeasurement of the pension plan resulted in an increase of $33,414 in Other Comprehensive Income, net of $20,630 in deferred taxes. The March 31, 2013 remeasurement resulted in a change to the discount rate to 4.12% from 4.00% at December 31, 2012. The March remeasurement reduced the pension liability by $29,916. The March settlement and corresponding remeasurement of the pension plan resulted in an increase of $35,261 in Other Comprehensive Income, net of $21,770 in deferred taxes.
	CONSOL Energy does not expect to contribute to the other post-employment benefits plan in 2014. We intend to pay benefit claims as they become due. For the six months ended June 30, 2014, $29,915 of other post-employment benefits have been paid.

CWP_and_Workers_Comp_Net_Perio

CWP and Workers Comp - Net Periodic Costs	6 Months Ended
	Jun. 30, 2014
CWP And Workers Comp Net Periodic Cost [Abstract]	'
Coal Workers' Pneumoconiosis (CWP) and Workers' Compensation:	'
	COMPONENTS OF COAL WORKERS’ PNEUMOCONIOSIS (CWP) AND WORKERS’ COMPENSATION NET PERIODIC BENEFIT COSTS:
	Components of net periodic costs (benefits) for the three and six months ended June 30 are as follows:
		CWP												Workers' Compensation
		Three Months Ended						Six Months Ended						Three Months Ended						Six Months Ended
		June 30,						June 30,						June 30,						June 30,
		2014			2013			2014			2013			2014			2013			2014			2013
	Service cost	$	1,418		$	2,135		$	2,837		$	4,270		$	2,445		$	3,533		$	4,890		$	7,066
	Interest cost	1,385			1,808			2,769			3,616			895			1,655			1,789			3,310
	Amortization of actuarial gain	(1,549		)	(4,212		)	(3,098		)	(8,425		)	(96		)	(699		)	(191		)	(1,398		)
	State administrative fees and insurance bond premiums	—			—			—			—			929			1,345			2,039			3,004
	Legal and administrative costs	—			—			—			—			—			591			—			1,182
	Net periodic cost (benefit)	$	1,254		$	(269	)	$	2,508		$	(539	)	$	4,173		$	6,425		$	8,527		$	13,164
	Expenses (income) attributable to discontinued operations included in the net periodic cost (benefit) above were ($165) and ($330) for the three and six months ended June 30, 2013, respectively, for CWP; and were $2,318 and $4,853 for the three and six months ended June 30, 2013, respectively, for Workers' Compensation.
	CONSOL Energy does not expect to contribute to the CWP plan in 2014. We intend to pay benefit claims as they become due. For the six months ended June 30, 2014, $6,062 of CWP benefit claims have been paid.
	CONSOL Energy does not expect to contribute to the workers’ compensation plan in 2014. We intend to pay benefit claims as they become due. For the six months ended June 30, 2014, $6,914 of workers’ compensation benefits, state administrative fees and surety bond premiums have been paid.

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES:
	The effective tax rate on continuing operations for the six months ended June 30, 2014 and 2013 was 9.1% and 85.6%, respectively.
	The effective rate for the six months ended June 30, 2014 differs from the U.S. federal statutory rate of 35% primarily due to a $20,480 income tax benefit for excess depletion, $8,820 discrete income tax benefit related to the completion of the Internal Revenue Service audit of tax years 2008 and 2009, and $7,395 discrete income tax benefit as a result of changes in estimates of excess percentage depletion and Domestic Production Activities Deduction related to the prior-year tax provision.
	For the six months ended June 30, 2014, CONSOL Energy recognized certain tax benefits as a result of changes in estimates related to a prior-year tax provision. The tax benefit of $8,351 related to increased percentage depletion deductions offset by $956 of tax expense related to changes in the Domestic Production Activities Deduction and various other estimates.
	The rate for the six months ended June 30, 2013 differs from the U.S. federal statutory rate of 35% primarily due to a $25,471 income tax charge for excess depletion, $8,269 discrete income tax charge related to the gain on sale of the Potomac coal reserves and a $1,585 income tax benefit due to a refund claim related to prior year Commonwealth of Pennsylvania taxes.
	The total amounts of uncertain tax positions at June 30, 2014 and December 31, 2013 were $2,540 and $22,770, respectively. If these uncertain tax positions were recognized, approximately $1,651 and $2,071, respectively, would affect CONSOL Energy’s effective tax rate. There were no additions to the liability for unrecognized tax benefits during the six months ended June 30, 2014 and 2013. The reduction in uncertain tax positions was due to the completion of the Internal Revenue Service audit of the 2008 and 2009 tax years.
	CONSOL Energy recognizes interest accrued related to uncertain tax positions in its interest expense. As of June 30, 2014 and December 31, 2013, the Company reported an accrued interest liability relating to uncertain tax positions of $1,302 and $6,200, respectively. The accrued interest liability includes $4,898 of interest income and $675 of interest expense that is reflected in the Company’s Consolidated Statements of Income for the six months ended June 30, 2014 and 2013, respectively.
	CONSOL Energy recognizes penalties accrued related to uncertain tax positions in its income tax expense. As of June 30, 2014 and December 31, 2013, CONSOL Energy had no accrued liability for tax penalties.
	CONSOL Energy and its subsidiaries file federal income tax returns with the United States and returns within various states and Canadian jurisdictions. With few exceptions, the Company is no longer subject to United States federal, state, local, or non-U.S. income tax examinations by tax authorities for the years before 2010. The Internal Revenue Service has issued its audit report related to the examination of CONSOL Energy’s 2008 and 2009 U.S. income tax returns during the six months ended June 30, 2014. As a result of these findings, CONSOL Energy paid federal income tax deficiencies of $4,464 and $1,001, respectively. The deficiencies were the result of changes in the timing of certain tax deductions. The changes in timing of these tax deductions increased the tax benefit of percentage depletion by $2,925 and $4,493 in tax years 2008 and 2009, respectively. The Company also recognized additional tax benefits of $1,402 primarily related to an increase in the Domestic Production Activities Deduction for the audited periods. Also, as a result of closing the IRS audit, CONSOL was required to file amended state income tax returns for the changes. In the quarter ended June 30, 2014, the Company filed the required amended returns and realized a discrete state income tax charge of $5,144 which was offset by a federal income tax benefit of $1,800.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	INVENTORIES:
	Inventory components consist of the following:
		June 30,		December 31,
		2014		2013
	Coal	$	23,953	$	31,944
	Merchandise for resale	39,251		38,263
	Supplies	84,801		87,707
	Total Inventories	$	148,005	$	157,914
	Inventories are stated at the lower of cost or market. The cost of coal inventories is determined by the first-in, first-out (FIFO) method. Coal inventory costs include labor, supplies, equipment costs, operating overhead, depreciation, depletion and amortization, and other related costs.
	Merchandise for resale is valued using the last-in, first-out (LIFO) cost method. The excess of replacement cost of merchandise for resale inventories over carrying LIFO value was $19,418 and $18,836 at June 30, 2014 and December 31, 2013, respectively.

Accounts_Receivable_Securitiza

Accounts Receivable Securitization	6 Months Ended
	Jun. 30, 2014
ACCOUNTS RECEIVABLE SECURITIZATION: [Abstract]	'
Accounts Receivable Securitization	'
	ACCOUNTS RECEIVABLE SECURITIZATION:
	CONSOL Energy and certain of our U.S. subsidiaries are party to a trade accounts receivable facility with financial institutions for the sale on a continuous basis of eligible trade accounts receivable. The facility allows CONSOL Energy to receive on a revolving basis up to $125,000. The facility also allows for the issuance of letters of credit against the $125,000 capacity. At June 30, 2014, there were letters of credit outstanding against the facility of $61,930. CONSOL Energy management believes that these letters of credit will expire without being funded, and therefore the commitments will not have a material adverse effect on the Company's financial condition. No amounts related to these financial guarantees and letters of credit are recorded as liabilities on the financial statements.
	CNX Funding Corporation, a wholly owned, special purpose, bankruptcy-remote subsidiary, buys and sells eligible trade receivables generated by certain subsidiaries of CONSOL Energy. Under the receivables facility, CONSOL Energy and certain subsidiaries, irrevocably and without recourse, sell all of their eligible trade accounts receivable to CNX Funding Corporation, which in turn sells these receivables to financial institutions and their affiliates, while maintaining a subordinated interest in a portion of the pool of trade receivables. This retained interest, which is included in Accounts and Notes Receivable Trade in the Consolidated Balance Sheets, is recorded at fair value. Due to a short average collection cycle for such receivables, our collection experience history and the composition of the designated pool of trade accounts receivable that are part of this program, the fair value of our retained interest approximates the total amount of the designated pool of accounts receivable. CONSOL Energy will continue to service the sold trade receivables for the financial institutions for a fee based upon market rates for similar services.
	In accordance with the Transfers and Servicing Topics of the Financial Accounting Standards Board (FASB) Accounting Standards Codification, CONSOL Energy records transactions under the securitization facility as secured borrowings on the Consolidated Balance Sheets. The pledge of collateral is reported as Accounts Receivable - Securitized and the borrowings are classified as debt in Borrowings under Securitization Facility.
	The cost of funds under this facility is based upon commercial paper rates or LIBOR, plus a charge for administrative services paid to the financial institutions. Costs associated with the receivables facility totaled $484 and $913 for the six months ended June 30, 2014 and 2013, respectively. These costs have been recorded as financing fees which are included in in the Other Costs - Miscellaneous Operating Expense in the Consolidated Statements of Income. No servicing asset or liability has been recorded. The receivables facility expires in March 2015.
	At June 30, 2014 and December 31, 2013, eligible accounts receivable totaled $85,900 and $115,000, respectively. There was $23,970 subordinated retained interest at June 30, 2014 and $48,945 subordinated retained interest at December 31, 2013. There were no borrowings under the Securitization Facility recorded on the Consolidated Balance Sheet as of June 30, 2014 and no borrowings at December 31, 2013. The accounts receivable securitization program had no change in the six months ended June 30, 2014 and increased by $2,873 in the six months ended June 30, 2013. The increase is reflected in the Net Cash Used in Financing Activities in the Consolidated Statement of Cash Flows. In accordance with the facility agreement, the Company is able to receive proceeds based upon the eligible accounts receivable at the previous month end.

Property_Plant_and_Equipment

Property, Plant and Equipment	6 Months Ended
	Jun. 30, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment	'
	PROPERTY, PLANT AND EQUIPMENT:
		June 30,		December 31,
		2014		2013
	Coal and other plant and equipment	$	3,711,184	$	3,681,051
	Intangible drilling cost	2,228,806		1,937,336
	Proven gas properties	1,683,052		1,670,404
	Unproven gas properties	1,493,708		1,463,406
	Coal properties and surface lands	1,407,518		1,409,408
	Gas gathering equipment	1,074,265		1,058,008
	Gas wells and related equipment	780,212		688,548
	Airshafts	443,657		397,466
	Mine development	416,296		354,607
	Leased coal lands	388,033		388,020
	Coal advance mining royalties	387,199		381,348
	Other gas assets	124,903		126,239
	Gas advance royalties	22,134		22,668
	Total Property Plant and Equipment	14,160,967		13,578,509
	Less: Accumulated DD&A	4,384,209		4,136,247
	Total Net PP&E	$	9,776,758	$	9,442,262
	Industry Participation Agreements
	CONSOL Energy has two significant industry participation agreements (referred to as "joint ventures" or "JVs") that provided drilling and completion carries for our retained interests.
	CNX Gas Company LLC (CNX Gas Company), a wholly owned subsidiary of CONSOL Energy, is party to a joint development agreement with Hess Ohio Developments, LLC (Hess) with respect to approximately 144 thousand net Utica Shale acres in Ohio in which each party has a 50% undivided interest. Under the agreement, as amended, Hess is obligated to pay a total of approximately $335,000 in the form of a 50% drilling carry of certain CONSOL Energy working interest obligations as the acreage is developed. As of June 30, 2014, Hess’ remaining carry obligation is $175,582.
	CNX Gas Company is party to a joint development agreement with Noble Energy, Inc. (Noble) with respect to approximately 696 thousand net Marcellus Shale oil and gas acres in West Virginia and Pennsylvania, in which each party owns a 50% undivided interest. Under the agreement, as amended, Noble Energy is obligated to pay a total of approximately $1,884,000 in the form of a one-third drilling carry of certain of CONSOL Energy’s working interest obligations as the property is developed, subject to certain limitations. These limitations include the suspension of the carry if average Henry Hub natural gas prices are below $4.00 per million British thermal units (MMbtu) for three consecutive months. Due to the increase in average natural gas prices, the carry is in effect beginning March 1, 2014, and will remain effective until average natural gas prices are below $4.00/MMbtu for three consecutive months. Restrictions also include a $400,000 annual maximum on Noble Energy's carried cost obligation. As of June 30, 2014, Noble Energy’s remaining carry obligation is $1,816,095.

ShortTerm_Notes_Payable

Short-Term Notes Payable	6 Months Ended
	Jun. 30, 2014
Short-term Debt, Other Disclosures [Abstract]	'
Short-Term Notes Payable:	'
	SHORT-TERM NOTES PAYABLE:
	CONSOL Energy entered into a new Amended and Restated Credit Agreement dated June 18, 2014 for a $2,000,000 senior secured revolving credit facility which expires on June 18, 2019. The new senior revolving credit facility replaced CONSOL Energy's existing $1,000,000 senior secured revolving credit facility which had been entered into as of April 12, 2011 and amended and restated on December 5, 2013 and the existing $1,000,000 senior secured revolving credit facility of CNX Gas Corporation and its subsidiaries that had been entered into as of April 12, 2011. The new senior secured revolving credit facility resulted in the acceleration of previously deferred financing charges of $2,989 during the quarter ended June 30, 2014. The facility is secured by substantially all of the assets of CONSOL Energy and certain of its subsidiaries. CONSOL Energy's credit facility allows for up to $2,000,000 of borrowings, which includes $750,000 in letters of credit aggregate sub-limit. CONSOL Energy can request an additional $500,000 increase in the aggregate borrowing limit amount. Fees and interest rate spreads are based on the percentage of facility utilization, measured quarterly. Availability under the facility is generally limited to a borrowing base, which is determined by the required number of lenders in good faith by calculating a loan value of CONSOL Energy's proved gas reserves. The facility includes a minimum interest coverage ratio covenant of no less than 2.50 to 1.00, measured quarterly. The interest coverage ratio was 4.15 to 1.00 at June 30, 2014. The facility includes a minimum current ratio covenant of no less than 1.00 to 1.00, measured quarterly. The minimum current ratio was 2.59 to 1.00 at June 30, 2014. Affirmative and negative covenants in the facility limit our ability to dispose of assets, make investments, purchase or redeem CONSOL Energy common stock, pay dividends, merge with another corporation and amend, modify or restate the senior unsecured notes. The credit facility allows unlimited investments in joint ventures for the development and operation of gas gathering systems. The facility permits CONSOL Energy to separate its gas and coal businesses if the leverage ratio (which, is essentially, the ratio of debt to EBITDA) of the gas business immediately after the separation would not be greater than 2.75 to 1.00. At June 30, 2014, the $2,000,000 facility had no borrowings outstanding and $260,473 of letters of credit outstanding, leaving $1,739,527 of unused capacity. At December 31, 2013, the prior CONSOL Energy $1,000,000 facility had no borrowings outstanding and $206,988 of letters of credit outstanding, leaving $793,012 of unused capacity. At December 31, 2013, the prior CNX Gas Corporation $1,000,000 facility had no borrowings outstanding and $87,643 of letters of credit outstanding, leaving $912,357 of unused capacity.

LongTerm_Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2014
Long-term Debt, Other Disclosures [Abstract]	'
Long-term Debt	'
	LONG-TERM DEBT:
		June 30,		December 31,
		2014		2013
	Debt:
	Senior notes due April 2017 at 8.00%, issued at par value	$	—	$	1,500,000
	Senior notes due April 2020 at 8.25%, issued at par value	1,250,000		1,250,000
	Senior notes due March 2021 at 6.375%, issued at par value	250,000		250,000
	Senior notes due April 2022 at 5.875%, issued at par value	1,600,000		—
	MEDCO revenue bonds in series due September 2025 at 5.75%	102,865		102,865
	Advance royalty commitments (7.93% weighted average interest rate for June 30, 2014 and December 31, 2013)	11,182		11,182
	Other long-term notes maturing at various dates through 2031 (total value of $5,236 and $5,923 less unamortized discount of $835 and $1,050 at June 30, 2014 and December 31, 2013, respectively).	4,401		4,873
		3,218,448		3,118,920
	Less amounts due in one year *	3,535		2,957
	Long-Term Debt	$	3,214,913	$	3,115,963
	* Excludes current portion of Capital Lease Obligations of $8,592 and $8,498 at June 30, 2014 and December 31, 2013, respectively.
	Accrued interest related to Long-Term Debt of $52,859 and $63,272 was included in Other Accrued Liabilities in the Consolidated Balance Sheets at June 30, 2014 and December 31, 2013, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	COMMITMENTS AND CONTINGENT LIABILITIES:
	CONSOL Energy and its subsidiaries are subject to various lawsuits and claims with respect to such matters as personal injury, wrongful death, damage to property, exposure to hazardous substances, governmental regulations including environmental remediation, employment and contract disputes and other claims and actions arising out of the normal course of business. We accrue the estimated loss for these lawsuits and claims when the loss is probable and can be estimated. Our current estimated accruals related to these pending claims, individually and in the aggregate, are immaterial to the financial position, results of operations or cash flows of CONSOL Energy. It is possible that the aggregate loss in the future with respect to these lawsuits and claims could ultimately be material to the financial position, results of operations or cash flows of CONSOL Energy; however, such amounts cannot be reasonably estimated. The amount claimed against CONSOL Energy is disclosed below when an amount is expressly stated in the lawsuit or claim, which is not often the case. The maximum aggregate amount claimed in those lawsuits and claims, regardless of probability, where a claim is expressly stated or can be estimated, exceeds the aggregate amounts accrued for all lawsuits and claims by approximately $390,096.
	The following lawsuits and claims include those for which a loss is probable and an accrual has been recognized.
	Asbestos-Related Litigation: One of our subsidiaries, Fairmont Supply Company (Fairmont), which distributes industrial supplies, currently is named as a defendant in approximately 6,900 asbestos-related claims in state courts in Pennsylvania, Ohio, West Virginia, Maryland, Texas and Illinois. Because a very small percentage of products manufactured by third parties and supplied by Fairmont in the past may have contained asbestos, and since many of the pending claims are asserted against dozens of defendants in any given action, it has been difficult for Fairmont to determine how many of the pending cases actually involve valid claims or plaintiffs who were actually exposed to asbestos-containing products supplied by Fairmont. In addition, while Fairmont may be entitled to indemnity or contribution in certain jurisdictions from manufacturers of identified products, the availability of such indemnity or contribution is unclear at this time, and in recent years, some of the manufacturers named as defendants in these actions have sought protection from these claims under bankruptcy laws. Fairmont has no insurance coverage with respect to these asbestos cases. Based on nearly 20 years of experience with this litigation, we have established an accrual to cover our estimated liability for these cases. This accrual is immaterial to the overall financial position of CONSOL Energy and was included in Other Accrued Liabilities on the Consolidated Balance Sheets. Past payments by Fairmont with respect to asbestos cases have not been material.
	Hale Litigation: A purported class action lawsuit was filed on September 23, 2010 in the U.S. District Court in Abingdon, Virginia styled Hale v. CNX Gas Company, et. al. The lawsuit alleges that the putative class consists of forced-pooled unleased gas owners whose gas ownership was declared to be in conflict with rights of others even where the Virginia Supreme Court and General Assembly have purportedly decided that coalbed methane (CBM) belongs to the owner of the gas estate; that the Virginia Gas and Oil Act of 1990 unconstitutionally provides only a 1/8 net proceeds royalty to CBM owners for gas produced under the forced-pooled orders; and, that CNX Gas Company relied upon control of only the coal estate in force pooling the CBM notwithstanding decisions by the Virginia Supreme Court. The lawsuit seeks a judicial declaration of ownership of the CBM and that the entire net proceeds of CBM production (that is, the 1/8 royalty and the 7/8 of net revenues since production began) be distributed to the class members. The lawsuit also alleges CNX Gas Company failed to either pay royalties due to conflicting claimants, or deemed lessors or paid them less than required because of the alleged practice of improper below market sales and/or taking alleged improper post-production deductions. In ruling on our Motion to Dismiss, the District Judge decided that the deemed lease provision of the Gas and Oil Act is constitutional, as is the 1/8 royalty. An amended complaint was filed, which added additional allegations that include gas hedging receipts should have been used as the basis for royalty payments, severance tax should not be allowed as a post-production deduction from royalties, and damages incurred because gas was produced prior to the entry of pooling orders. A motion to dismiss the Amended Complaint was filed and denied. The Magistrate Judge issued a Report & Recommendation on June 5, 2013, recommending that the District Judge grant plaintiffs' Motion for Class Certification. On September 30, 2013, the District Judge entered an Order overruling CNX Gas Company’s Objections, adopting the Report & Recommendation and certifying the class with a modified class definition. CONSOL Energy believes this case cannot properly proceed as a class action and filed a Petition asking the U.S. Court of Appeals for the Fourth Circuit to review the class certification Order. On November 13, 2013, the Fourth Circuit entered an Order deferring a ruling on the Petition but assigning the case to a merits panel. The appeal was fully briefed, and oral argument was held before a three-judge panel of the Fourth Circuit on May 13, 2014. Plaintiffs filed Motions for Summary Judgment on the issue of ownership of the gas royalty escrow accounts and seeking an accounting. The Fourth Circuit denied a Motion to Stay the trial court proceedings while it considers the class certification issues, and the District Judge heard argument on the summary judgment motions on January 6, 2014, but has not ruled on the Motions. CONSOL Energy believes that the case has meritorious defenses and intends to defend it vigorously. We have established an accrual to cover our estimated liability for this case. This accrual is immaterial to the overall financial position of CONSOL Energy and is included in Other Accrued Liabilities on the Consolidated Balance Sheets.
	Addison Litigation: A putative class action lawsuit was filed on April 28, 2010 in the United States District Court in Abingdon, Virginia styled Addison v. CNX Gas Company, et al.  The lawsuit alleges that the plaintiff class consists of gas lessors whose gas ownership is in conflict. The lawsuit alleges that the Virginia Supreme Court and General Assembly have decided that the plaintiffs own the gas and are entitled to royalties held in escrow by the Commonwealth of Virginia or CNX Gas Company. The lawsuit also alleges CNX Gas Company failed to either pay royalties due these conflicting claimant lessors or paid them less than required because of the alleged practice of improper below market sales and/or taking alleged improper post-production deductions. Plaintiff seeks a declaratory judgment regarding ownership, an accounting and compensatory and punitive damages for breach of contract; conversion; negligence (voluntary undertaking) for improperly asserting that conflicting ownership exists, negligence (breach of duties as an operator); breach of fiduciary duties; and unjust enrichment. The District Judge granted, in part, CNX Gas Company’s Motion to Dismiss. An Amended Complaint was filed which added an additional allegation that gas hedging receipts should have been used as the basis for royalty payments. A motion to dismiss those claims was filed and was denied. The Magistrate Judge issued a Report & Recommendation on June 5, 2013, recommending that the District Judge grant plaintiffs' Motion for Class Certification. On September 30, 2013, the District Judge entered an Order overruling CNX Gas Company’s Objections, adopting the Report & Recommendation and certifying the class with a modified class definition. CNX Gas believes this case cannot properly proceed as a class action and filed a Petition asking the U.S. Court of Appeals for the Fourth Circuit to review the class certification Order. On November 13, 2013, the Fourth Circuit entered an Order deferring a ruling on the Petition but assigning the case to a merits panel. The appeal was fully briefed, and a three-judge panel of the Fourth Circuit heard oral argument on May 13, 2014. Plaintiffs have filed Motions for Summary Judgment on the issue of ownership of the gas royalty escrow accounts and seeking an accounting. The Fourth Circuit denied a Motion to Stay the trial court proceedings while it considers the class certification issues, and the District Judge heard argument on the summary judgment motions on January 6, 2014, but has not ruled on the Motions. CONSOL Energy believes that the case has meritorious defenses and intends to defend it vigorously. We have established an accrual to cover our estimated liability for this case. This accrual is immaterial to the overall financial position of CONSOL Energy and was included in Other Accrued Liabilities on the Consolidated Balance Sheets.
	The following royalty and land right lawsuits and claims include those for which a loss is reasonably possible, but not probable, and accordingly, no accrual has been recognized. These claims are influenced by many factors which prevent the estimation of a range of potential loss. These factors include, but are not limited to, generalized allegations of unspecified damages (such as improper deductions), discovery having not commenced or not having been completed, unavailability of expert reports on damages and non-monetary issues are being tried. For example, in instances where a gas lease termination is sought, damages would depend on speculation as to if and when the gas production would otherwise have occurred, how many wells would have been drilled on the lease premises, what their production would be, what the cost of production would be, and what the price of gas would be during the production period. An estimate is calculated, if applicable, when sufficient information becomes available.
	Ratliff Litigation: On January 30, 2013, the Company was served with a complaint filed on behalf of four individuals against Consolidation Coal Company (CCC), Island Creek Coal Company (ICCC), CNX Gas Company, as well as CONSOL Energy itself in the United States District Court for the Western District of Virginia. The complaint seeks damages and injunctive relief in connection with the deposit of water from mining activities at the Buchanan Mine into nearby void spaces at some of the mines of ICCC, voids ostensibly underlying their property. The suit alleges damage to coal and coalbed methane and seeks recovery in tort, contract and assumpsit (quasi-contract). The suit seeks damages of approximately $50,000 plus punitive damages. The defendants have asserted Virginia's Mine Void Statute as a defense to plaintiffs’ claims and the plaintiffs have challenged the constitutionality of that statute. On March 18, 2014, the District Court concluded, in ruling on Defendants’ Motion to Dismiss, it could not resolve either the constitutionality or the applicability of the Mine Void Statute on the current record. Discovery is ongoing. CONSOL Energy intends to vigorously defend the suit.
	Kennedy Litigation: The Company is a party to a case filed on March 26, 2008 captioned Earl Kennedy (and others) v. CNX Gas Company and CONSOL Energy in the Court of Common Pleas of Greene County, Pennsylvania. The lawsuit alleges that CNX Gas Company and CONSOL Energy trespassed and converted gas and other minerals allegedly belonging to the plaintiffs in connection with wells drilled by CNX Gas Company. The complaint, as amended, seeks injunctive relief, including removing CNX Gas Company from the property, and compensatory damages of $20,000. The suit also sought to overturn existing law as to the ownership of coalbed methane in Pennsylvania, but that claim was dismissed by the court. The suit further sought a determination that the Pittsburgh 8 coal seam does not include the “roof/rider” coal. The court held a bench trial on the “roof/rider” coal issue in November 2011 and ruled in favor of CNX Gas Company and CONSOL Energy. On March 3, 2014, the Company won summary judgment on Counts 1 through 10 of the Amended Complaint, each relating to the alleged trespass of horizontal CBM wells into strata other than the Pittsburgh 8 Seam. The Court rejected each of those claims, essentially holding that if CNX Gas Company went out of the coal seam, it had no intention to do so and, in any event, the plaintiff could not prove any damages as a result. The last remaining Count, seeking to quiet title to approximately 40 acres of Pittsburgh Seam coal, was nonsuited by Plaintiffs, without prejudice, on March 26, 2014. On March 28, 2014, Plaintiffs filed Notices of Appeal with the Pennsylvania Superior Court on all issues decided in CONSOL Energy’s favor.
	Rowland Litigation: Rowland Land Company filed a complaint in May 2011 against CONSOL Energy, CNX Gas Company, Dominion Resources Inc., and EQT Production Company (EQT) in Raleigh County Circuit Court, West Virginia. Rowland is the lessor on a 33,000 acre oil and gas lease in southern West Virginia. EQT was the original lessee, but farmed out the development of the lease to Dominion Resources in exchange for an overriding royalty. Dominion Resources sold the indirect subsidiary that held the lease to a subsidiary of CONSOL Energy on April 30, 2010. Subsequent to that acquisition, the subsidiary that held the lease was merged into CNX Gas Company as part of an internal reorganization. Rowland alleges that (i) Dominion Resources' sale of the subsidiary to CONSOL Energy was a change in control that required its consent under the terms of the farmout agreement and lease, and/or (ii) the subsequent merger of the subsidiary into CNX Gas Company was an assignment that required its consent under the lease. Rowland has recently been permitted to file its Third Amended Complaint to include additional allegations that CONSOL Energy has slandered Rowland's title. A motion to dismiss will be filed. Although initial mediation efforts were unsuccessful, another mediation session was held on May 27, 2014, and the parties continue to discuss settlement. CONSOL Energy believes that the case is without merit and intends to defend it vigorously. Consequently, we have not recognized any liability related to these actions.
	At June 30, 2014, CONSOL Energy has provided the following financial guarantees, unconditional purchase obligations and letters of credit to certain third parties, as described by major category in the following table. These amounts represent the maximum potential total of future payments that we could be required to make under these instruments. These amounts have not been reduced for potential recoveries under recourse or collateralization provisions. Generally, recoveries under reclamation bonds would be limited to the extent of the work performed at the time of the default. No amounts related to these financial guarantees and letters of credit are recorded as liabilities on the financial statements. CONSOL Energy management believes that these guarantees will expire without being funded, and therefore the commitments will not have a material adverse effect on financial condition.
		Amount of Commitment Expiration Per Period
		Total			Less Than			1-3 Years			3-5 Years			Beyond
		Amounts			1  Year									5  Years
		Committed
	Letters of Credit:
	Employee-Related	$	151,311		$	117,542		$	33,769		$	—		$	—
	Environmental	39,363			39,363			—			—			—
	Other	131,802			58,979			72,823			—			—
	Total Letters of Credit	322,476			215,884			106,592			—			—
	Surety Bonds:
	Employee-Related	204,893			194,893			10,000			—			—
	Environmental	678,943			673,076			5,867			—			—
	Other	26,887			26,840			46			—			1
	Total Surety Bonds	910,723			894,809			15,913			—			1
	Guarantees:
	Coal	233,260			150,300			82,960			—			—
	Other	67,717			35,611			10,470			14,462			7,174
	Total Guarantees	300,977			185,911			93,430			14,462			7,174
	Total Commitments	$	1,534,176		$	1,296,604		$	215,935		$	14,462		$	7,175
	Included in the above table are commitments and guarantees entered into in conjunction with the sale of CCC and certain of its subsidiaries, which contain all five of its longwall coal mines in West Virginia, and its river operations to a subsidiary of Murray Energy. As part of the sales agreement, CONSOL Energy has guaranteed certain equipment lease obligations and coal sales agreements that were assumed by Murray Energy. In the event that Murray Energy would default on the obligations defined in the agreements, CONSOL Energy would be required to perform under the guarantees. If CONSOL Energy would be required to perform, the stock purchase agreement provides various recourse actions. At June 30, 2014, the fair value of these guarantees was $3,000 and was included in Other Accrued Liabilities on the Consolidated Balance Sheets. The fair value of certain guarantees was determined using CONSOL Energy’s risk adjusted interest rate. Significant increases or decreases in the risk-adjusted interest rates may result in a significantly higher or lower fair value measurement. Coal sales agreement guarantees were valued based on an evaluation of coal market pricing compared to contracted sales price and includes an adjustment for nonperformance risk. No other amounts related to financial guarantees and letters of credit are recorded as liabilities in the financial statements. Significant judgment is required in determining the fair value of these guarantees. The guarantees of the leases and sales agreements are classified within Level 3 of the fair value hierarchy.
	CONSOL Energy regularly evaluates the likelihood of default for all guarantees based on an expected loss analysis and records the fair value, if any, of its guarantees as an obligation in the consolidated financial statements.
	CONSOL Energy and CNX Gas enter into long-term unconditional purchase obligations to procure major equipment purchases, natural gas firm transportation, gas drilling services and other operating goods and services. These purchase obligations are not recorded on the Consolidated Balance Sheets. As of June 30, 2014, the purchase obligations for each of the next five years and beyond were as follows:
	Obligations Due	Amount
	Less than 1 year	$	172,295
	1 - 3 years	381,321
	3 - 5 years	355,532
	More than 5 years	763,883
	Total Purchase Obligations	$	1,673,031
	Costs related to these purchase obligations include:
			Three Months Ended						Six Months Ended
			June 30,						June 30,
			2014			2013			2014			2013
	Major Equipment Purchases		$	11,474		$	5,654		$	90,161		$	8,747
	Firm Transportation and Processing Expense		25,424			21,689			49,363			42,821
	Gas Drilling Obligations		30,226			25,904			52,450			54,768
	Total Costs Related to Purchase Obligations		$	67,124		$	53,247		$	191,974		$	106,336

Derivative_Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Instruments:	'
	DERIVATIVE INSTRUMENTS:
	CONSOL Energy enters into financial derivative instruments to manage our exposure to commodity price volatility. The fair value of CONSOL Energy's derivatives (natural gas price swaps and options) are based on pricing models which utilize inputs that are either readily available in the public market, such as natural gas forward curves, or can be corroborated from active markets or broker quotes. These values are then compared to the values given by our counterparties for reasonableness. Changes in the fair value of the derivatives are recorded currently in earnings unless special hedge accounting criteria are met. For derivatives designated as fair value hedges, the changes in fair value of both the derivative instrument and the hedged item are recorded in earnings. For derivatives designated as cash flow hedges, the effective portions of changes in the fair value of the derivatives are reported in Other Comprehensive Income or Loss (OCI) on the Consolidated Balance Sheets and reclassified into Natural Gas, NGL's and Oil Sales on the Consolidated Statements of Income in the same period or periods which the forecasted transaction affects earnings. The ineffective portions of hedges are recognized in earnings in the current period. CONSOL Energy currently utilizes only cash flow hedges that are considered highly effective.
	CONSOL Energy formally assesses both at inception of the hedge and on an ongoing basis whether each derivative is highly effective in offsetting changes in the fair values or the cash flows of the hedged item. If it is determined that a derivative is not highly effective as a hedge or if a derivative ceases to be a highly effective hedge, CONSOL Energy will discontinue hedge accounting prospectively.
	CONSOL Energy is exposed to credit risk in the event of nonperformance by counterparties. The creditworthiness of counterparties is subject to continuing review. The Company has not experienced any issues of non-performance by derivative counterparties.
	None of our counterparty master agreements currently require CONSOL Energy to post collateral for any of its hedges. However, as stated in the counterparty master agreements, if CONSOL Energy's obligations with one of its counterparties cease to be secured on the same basis as similar obligations with the other lenders under the credit facility, CONSOL Energy would have to post collateral for hedges in a liabilities position in excess of defined thresholds. All of our derivative instruments are subject to master netting arrangements with our counterparties.  CONSOL Energy recognizes all financial derivative instruments as either assets or liabilities at fair value on the Consolidated Balance Sheets on a gross basis.
	Each of CONSOL Energy's counterparty master agreements allows, in the event of default, the ability to elect early termination of outstanding contracts. If early termination is elected, CONSOL Energy and the applicable counterparty would net settle all open hedge positions.
	CONSOL Energy has entered into swap and option contracts for natural gas to manage the price risk associated with the forecasted natural gas sales. The objective of these hedges is to reduce the variability of the cash flows associated with the forecasted sales from the underlying commodity. As of June 30, 2014, the total notional amount of the Company’s outstanding derivative instruments was 241.4 billion cubic feet. These derivative instruments are forecasted to settle through December 31, 2016 and meet the criteria for cash flow hedge accounting. As these contracts settle, the cash received and/or paid will be shown on the Consolidated Statements of Cash Flows as Changes in Prepaid Expenses, Changes in Other Assets, Changes in Other Operating Liabilities and/or Changes in Other Liabilities. Assuming no changes in price during the next twelve months, $319 of unrealized loss is expected to be reclassified from Other Comprehensive Income on the Consolidated Balance Sheets and into Natural Gas, NGL's and Oil Sales on the Consolidated Statements of Income, as a result of the gross settlements of cash flow hedges. No gains or losses have been reclassified into earnings as a result of the discontinuance of cash flow hedges.
	The gross fair value at June 30, 2014 of CONSOL Energy's derivative instruments, which all qualify as cash flow hedges, was an asset of $41,362 and a liability of $32,601. The total asset is comprised of $27,593 and $13,769 which were included in Prepaid Expense and Other Assets, respectively, on the Consolidated Balance Sheets. The total liability is comprised of $28,458 and $4,143 which were included in Other Accrued Liabilities and Other Liabilities, respectively, on the Consolidated Balance Sheets.
	The gross fair value at December 31, 2013 of CONSOL Energy's derivative instruments, which all qualify as cash flow hedges, was an asset of $83,661 and a liability of $18,212. The total asset is comprised of $59,605 and $24,056 which were included in Prepaid Expense and Other Assets, respectively, on the Consolidated Balance Sheets. The total liability is comprised of $12,327 and $5,885 which were included in Other Accrued Liabilities and Other Liabilities, respectively, on the Consolidated Balance Sheets.
	The effect of derivative instruments in cash flow hedging relationships on the Consolidated Statements of Income and the Consolidated Statements of Stockholders' Equity net of tax were as follows:
		For the Three Months Ended June 30,
		2014			2013
	Natural Gas Price Swaps and Options
	Beginning Balance – Accumulated OCI	$	11,841		$	35,453
	(Loss)/Gain recognized in Accumulated OCI	(12,218		)	45,749
	Less: (Loss)/Gain reclassified from Accumulated OCI into Natural Gas, NGL's and Oil Sales	(6,951		)	9,528
	Ending Balance – Accumulated OCI	$	6,574		$	71,674
	Gain/(Loss) recognized in Natural Gas, NGL's and Oil Sales for ineffectiveness	$	508		$	(3,753	)
		For the Six Months Ended June 30,
		2014			2013
	Natural Gas Price Swaps and Options
	Beginning Balance – Accumulated OCI	$	42,493		$	76,761
	(Loss)/Gain recognized in Accumulated OCI	(59,183		)	27,154
	Less: (Loss)/Gain reclassified from Accumulated OCI into Natural Gas, NGL's and Oil Sales	(23,264		)	32,241
	Ending Balance – Accumulated OCI	$	6,574		$	71,674
	Gain/(Loss) recognized in Natural Gas, NGL's and Oil Sales for ineffectiveness	$	863		$	(2,712	)
	There were no amounts excluded from the assessment of hedge effectiveness in 2014 or 2013.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	FAIR VALUE OF FINANCIAL INSTRUMENTS:
	The financial instruments measured at fair value on a recurring basis are summarized below:
		Fair Value Measurements at June 30, 2014									Fair Value Measurements at December 31, 2013
	Description	Quoted Prices in			Significant			Significant			Quoted Prices in			Significant		Significant
		Active Markets			Other			Unobservable			Active Markets			Other		Unobservable
		for Identical			Observable			Inputs			for Identical			Observable		Inputs
		Liabilities			Inputs			(Level 3)			Liabilities			Inputs		(Level 3)
		(Level 1)			(Level 2)						(Level 1)			(Level 2)
	Gas Cash Flow Hedges	$	—		$	8,761		$	—		$	—		$	65,449	$	—
	Murray Energy Guarantees	$	—		$	—		$	3,000		$	—		$	—	$	3,000
	The following methods and assumptions were used to estimate the fair value for which the fair value option was not elected:
	Cash and cash equivalents: The carrying amount reported in the balance sheets for cash and cash equivalents approximates its fair value due to the short-term maturity of these instruments.
	Long-term debt: The fair value of long-term debt is measured using unadjusted quoted market prices or estimated using discounted cash flow analyses. The discounted cash flow analyses are based on current market rates for instruments with similar cash flows.
	The carrying amounts and fair values of financial instruments for which the fair value option was not elected are as follows:
		June 30, 2014						December 31, 2013
		Carrying			Fair			Carrying			Fair
		Amount			Value			Amount			Value
	Cash and Cash Equivalents	$	147,393		$	147,393		$	327,420		$	327,420
	Long-Term Debt	$	(3,218,448	)	$	(3,430,827	)	$	(3,118,920	)	$	(3,299,875	)

Segment_Information

Segment Information	6 Months Ended
	Jun. 30, 2014
Segment Reporting Information [Line Items]	'
Segment Reporting Disclosure [Text Block]	'
	SEGMENT INFORMATION:
	CONSOL Energy has two principal business divisions: Exploration and Production (E&P) and Coal. The principal activity of the E&P division is to produce pipeline quality natural gas for sale primarily to gas wholesalers. The E&P division includes four reportable segments. These reportable segments are Marcellus, Coalbed Methane, Shallow Oil and Gas and Other Gas. The Other Gas segment includes our purchased gas activities, general and administrative activities as well as various other activities assigned to the E&P division but not allocated to each individual well type. The principal activities of the Coal division are mining, preparation and marketing of thermal coal, sold primarily to power generators, and metallurgical coal, sold to metal and coke producers. The Coal division includes four reportable segments. These reportable segments are Thermal, Low Volatile Metallurgical, High Volatile Metallurgical and Other Coal. Each of these reportable segments includes a number of operating segments (mines or type of coal sold). For the three months ended June 30, 2014, the Thermal aggregated segment includes the following mines: Bailey Complex, Enlow Fork, Harvey Mine and Miller Creek Complex. For the three months ended June 30, 2014, the Low Volatile Metallurgical aggregated segment includes the Buchanan Mine. For the three months ended June 30, 2014, the High Volatile Metallurgical aggregated segment includes: Bailey Complex, Enlow Fork, and Harvey Mine coal sales. The Other Coal segment includes our purchased coal activities, idled mine activities, general and administrative activities as well as various other activities assigned to the Coal division but not allocated to each individual mine. CONSOL Energy’s All Other segment includes industrial supplies, coal terminal operations and various other corporate activities that are not allocated to the E&P or coal segment. Intersegment sales have been recorded at amounts approximating market. Operating profit for each segment is based on sales less identifiable operating and non-operating expenses. Assets are reflected at the division level only (E&P, coal, and other) and are not allocated between each individual segment. This presentation is consistent with the information regularly reviewed by the chief operating decision maker. The assets are not allocated to each individual segment due to the diverse asset base controlled by CONSOL Energy where each individual asset may service more than one segment within the division. An allocation of such asset base would not be meaningful or representative on a segment by segment basis.

Related_Party_Transaction

Related Party Transaction	3 Months Ended
	Jun. 30, 2014
Related Party Transaction [Line Items]	'
Related Party Transactions Disclosure [Text Block]	'
	RELATED PARTY TRANSACTIONS:
	CONE Gathering LLC Related Party Transactions
	During the six months ended June 30, 2014, CONE Gathering LLC (CONE), a 50% owned affiliate, provided CNX Gas Company LLC (CNX Gas Company) gathering services in the ordinary course of business. Gathering services received from CONE were $14,382 and $26,207 for the three and six months ended June 30, 2014, respectively, and were $6,301 and $14,781 for the three and six months ended June 30, 2013, respectively, which were included in Exploration and Production Costs - Transportation, Gathering and Compression on the Consolidated Statements of Income.
	As of June 30, 2014 and December 31, 2013, CONSOL Energy had a net payable of $4,267 and $5,448, respectively, due to CONE which was comprised of the following items:
		June 30,			December 31,
		2014			2013			Location on Balance Sheet
	Reimbursement for CONE Expenses	$	(478	)	$	(2,168	)	Accounts Receivable–Other
	Reimbursement for Services Provided to CONE	(83		)	(265		)	Accounts Receivable–Other
	CONE Gathering Capital Reimbursement	(283		)	—			Accounts Receivable–Other
	CONE Gathering Fee Payable	5,111			7,881			Accounts Payable
	Net Payable due to CONE	$	4,267		$	5,448

New_Accounting_Pronouncements_

New Accounting Pronouncements (Notes)	6 Months Ended
	Jun. 30, 2014
Recent Accounting Pronouncements [Abstract]	'
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	'
	In June 2014, the Financial Accounting Standards Board (FASB) issued Update 2014-12 - Compensation-Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The objective of the amendments in this update is to resolve the diverse accounting treatment of share-based payment awards. The amendments in this update apply to all reporting entities that grant their employees share-based payments in which the terms of the award provide that a performance target that affects vesting could be achieved after the requisite service period. The amendments require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. Compensation cost should be recognized in either (i) the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered or (ii) if the performance target becomes probable of being achieved before the end of the requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period will reflect the number of awards that are expected to vest and will be adjusted to reflect those awards that ultimately vest. The requisite service period ends when the employee can cease rendering service and still be eligible to vest in the award if the performance target is achieved. The amendments in this update are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Earlier adoption is permitted. Entities may apply the amendments in this update either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. We are currently still evaluating the impact this guidance may have on our operations.
	In May 2014, the Financial Accounting Standards Board issued Update 2014-09 - Revenue from Contracts with Customers (Topic 606). The objective of the amendments in this update is to improve financial reporting by creating common revenue recognition guidance for accounting principles generally accepted in the United States (U.S. GAAP) and International Financial Reporting Standards (IFRS). The guidance in this update supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. An entity should disclose sufficient information, both qualitative and quantitative, to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The amendments in this update are effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. We believe adoption of this new guidance will not have a material impact on CONSOL Energy's financial statements.
	In April 2014, the Financial Accounting Standards Board issued Update 2014-08 - Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. The objective of the amendments in this update is to change the criteria for reporting discontinued operations and enhance convergence of the FASB's and the International Accounting Standard Board's (IASB) reporting requirements for discontinued operations. The amendments in this update change the requirements for reporting discontinued operations in Subtopic 205-20. A discontinued operation may include a component of an entity or a group of components of an entity, or a business or nonprofit activity. A disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. The amendments in this update require an entity to present, for each comparative period, the assets and liabilities of a disposal group that includes a discontinued operation separately in the asset and liability sections, respectively, of the statement of financial position. The amendments in this update also require additional disclosures about discontinued operations. Public business entities must apply the amendments in this update prospectively to both of the following: (1) All disposals (or classifications as held for sale) of components of an entity that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years; (2) All businesses or nonprofit activities that, on acquisition, are classified as held for sale that occur within annual periods beginning on or after December 15, 2014, and interim periods within those years. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. We believe adoption of this new guidance will not have a material impact on CONSOL Energy's financial statements.

Subsequent_Event_Notes

Subsequent Event (Notes)	6 Months Ended
	Jun. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events [Text Block]	'
	NOTE 19—SUBSEQUENT EVENT:
	On July 29, 2014, CONSOL Energy closed on the private placement of $250,000 of 5.875% senior notes due 2022. The notes were an add-on to the $1,600,000 of 5.875% senior notes due 2022 that closed on April 16, 2014, collectively these will represent $1,850,000 of 5.875% senior notes due 2022 (the “Notes”).  The Notes are guaranteed by substantially all of CONSOL Energy's wholly-owned domestic restricted subsidiaries. CONSOL Energy intends to use the net proceeds of the sale of the add-on notes to repurchase a portion of the $1,250,000 of 8.25% senior notes due 2020 and for general corporate purposes.
	The notes have not been registered under the Securities Act of 1933, as amended (the "Securities Act"), or any state securities laws and, unless so registered, may not be offered or sold in the United States except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act and the rules promulgated thereunder and applicable state securities laws. The Notes were offered only to qualified institutional buyers in reliance on Rule 144A under the Securities Act and non-U.S. persons in transactions outside the United States in reliance on Regulation S under the Securities Act.

Basis_of_Presentation_Tables

Basis of Presentation (Tables)	6 Months Ended
	Jun. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
	The computations for basic and dilutive earnings per share are as follows:
		Three Months Ended June 30,								Six Months Ended June 30,
		2014				2013				2014				2013
	(Loss) Income from Continuing Operations	$	(24,935	)		$	8,562			$	96,756			$	4,838
	(Loss) Income from Discontinuing Operations	—				(21,375			)	(5,687			)	(19,472		)
	Less: Net Loss Attributable to Noncontrolling Interest	—				(287			)	—				(544		)
	Net (Loss) Income Attributable to CONSOL Energy Inc. Shareholders	$	(24,935	)		$	(12,526		)	$	91,069			$	(14,090	)
	Weighted average shares of common stock outstanding:
	Basic	230,061,395				228,721,980				229,795,193				228,520,886
	Effect of stock-based compensation awards	—				—				1,595,988				—
	Dilutive	230,061,395				228,721,980				231,391,181				228,520,886
	Earnings per share:
	Basic (Continuing Operations)	$	(0.11	)		$	0.04			$	0.42			$	0.02
	Basic (Discontinuing Operations)	—				(0.09			)	(0.02			)	(0.08		)
	Total Basic	$	(0.11	)		$	(0.05		)	$	0.4			$	(0.06	)
	Dilutive (Continuing Operations)	$	(0.11	)		$	0.04			$	0.42			$	0.02
	Dilutive (Discontinuing Operations)	—				(0.09			)	(0.03			)	(0.08		)
	Total Dilutive	$	(0.11	)		$	(0.05		)	$	0.39			$	(0.06	)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	'
	The table below sets forth the share-based awards that have been excluded from the computation of the diluted earnings per share because their effect would be anti-dilutive:
		Three Months Ended June 30,							Six Months Ended June 30,
		2014			2013				2014			2013
	Anti-Dilutive Options	4,123,949			4,845,029				359,488			4,845,029
	Anti-Dilutive Restricted Stock Units	1,265,237			1,383,908				—			1,383,908
	Anti-Dilutive Performance Share Units	523,357			83,356				—			83,356
	Anti-Dilutive Performance Share Options	802,804			602,101				—			602,101
		6,715,347			6,914,394				359,488			6,914,394
Schedule of Changes in Accumulated Other Comprehensive Income/(Loss) by Component [Table Text Block]	'
	Changes in Accumulated Other Comprehensive Income / (Loss) by component, net of tax, were as follows:
		Gains and Losses on Cash Flow Hedges				Postretirement Benefits				Total
	Balance at December 31, 2013	$	42,493			$	(367,610		)	$	(325,117		)
	Other comprehensive income before reclassifications	(59,183		)		(22,133			)	(81,316			)
	Amounts reclassified from accumulated other comprehensive income	23,264				23,454				46,718
	Current period other comprehensive income	(35,919		)		1,321				(34,598			)
	Balance at June 30, 2014	$	6,574			$	(366,289		)	$	(359,715		)
Schedule of Reclassification of Adjustments to Accumulated Other Comprehensive Income [Table Text Block]	'
	The following table shows the reclassification of adjustments out of Accumulated Other Comprehensive Loss:
		Three Months Ended June 30,								Six Months Ended June 30,
		2014				2013				2014				2013
	Derivative Instruments (Note 13)
	Natural gas price swaps and options	$	13,593			$	(18,088		)	$	40,857			$	(54,767	)
	Tax (expense) benefit	(6,642		)		8,560				(17,593			)	22,526
	Net of tax	$	6,951			$	(9,528		)	$	23,264			$	(32,241	)
	Actuarially Determined Long-Term Liability Adjustments*(Note 4 and Note 5)
	Amortization of prior service costs	$	(2,542	)		$	(8,211		)	$	(5,084		)	$	(16,423	)
	Recognized net actuarial loss	10,861				23,559				21,507				48,747
	Settlement loss	20,707				5,087				20,707				32,202
	Total	29,026				20,435				37,130				64,526
	Tax expense	(10,691		)		(7,800			)	(13,676			)	(24,631		)
	Net of tax	$	18,335			$	12,635			$	23,454			$	39,895
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	'
	The table below sets forth the share-based awards that have been exercised or released:
		Three Months Ended June 30,						Six Months Ended June 30,
		2014		2013				2014		2013
	Options	382,773		160,119				648,112		245,113
	Restricted Stock Units	56,403		89,632				390,802		568,141
	Performance Share Units	—		—				378,971		159,228
		439,176		249,751				1,417,885		972,482

Pension_and_OPEB_Periodic_Cost1

Pension and OPEB - Periodic Cost (Tables)	6 Months Ended
	Jun. 30, 2014
PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS NET PERIODIC BENEFIT COSTS: [Abstract]	'
Components of Net Periodic Costs	'
	Components of net periodic costs (benefits) for the three and six months ended June 30 are as follows:
		Pension Benefits												Other Post-Employment Benefits
		Three Months Ended						Six Months Ended						Three Months Ended						Six Months Ended
		June 30,						June 30,						June 30,						June 30,
		2014			2013			2014			2013			2014			2013			2014			2013
	Service cost	$	4,483		$	5,581		$	8,791		$	11,287		$	2,331		$	4,849		$	4,663		$	9,698
	Interest cost	8,993			8,909			18,144			17,752			12,097			29,619			24,194			59,237
	Expected return on plan assets	(12,765		)	(12,711		)	(25,512		)	(24,855		)	—			—			—			—
	Amortization of prior service credits	(346		)	(407		)	(692		)	(815		)	(2,196		)	(7,804		)	(4,392		)	(15,608		)
	Recognized net actuarial loss	6,106			10,547			11,997			22,722			6,369			17,595			12,737			35,190
	Settlement loss	20,707			5,087			20,707			32,202			—			—			—			—
	Net periodic benefit cost	$	27,178		$	17,006		$	33,435		$	58,293		$	18,601		$	44,259		$	37,202		$	88,517

CWP_and_Workers_Comp_Net_Perio1

CWP and Workers Comp - Net Periodic Costs (Tables)	6 Months Ended
	Jun. 30, 2014
CWP And Workers Comp Net Periodic Costs [Abstract]	'
Components of Net Periodic Benefit Costs	'
	Components of net periodic costs (benefits) for the three and six months ended June 30 are as follows:
		CWP												Workers' Compensation
		Three Months Ended						Six Months Ended						Three Months Ended						Six Months Ended
		June 30,						June 30,						June 30,						June 30,
		2014			2013			2014			2013			2014			2013			2014			2013
	Service cost	$	1,418		$	2,135		$	2,837		$	4,270		$	2,445		$	3,533		$	4,890		$	7,066
	Interest cost	1,385			1,808			2,769			3,616			895			1,655			1,789			3,310
	Amortization of actuarial gain	(1,549		)	(4,212		)	(3,098		)	(8,425		)	(96		)	(699		)	(191		)	(1,398		)
	State administrative fees and insurance bond premiums	—			—			—			—			929			1,345			2,039			3,004
	Legal and administrative costs	—			—			—			—			—			591			—			1,182
	Net periodic cost (benefit)	$	1,254		$	(269	)	$	2,508		$	(539	)	$	4,173		$	6,425		$	8,527		$	13,164

Inventories_Tables

Inventories (Tables)	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
Inventory components	'
		June 30,		December 31,
		2014		2013
	Coal	$	23,953	$	31,944
	Merchandise for resale	39,251		38,263
	Supplies	84,801		87,707
	Total Inventories	$	148,005	$	157,914

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	6 Months Ended
	Jun. 30, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment	'
		June 30,		December 31,
		2014		2013
	Coal and other plant and equipment	$	3,711,184	$	3,681,051
	Intangible drilling cost	2,228,806		1,937,336
	Proven gas properties	1,683,052		1,670,404
	Unproven gas properties	1,493,708		1,463,406
	Coal properties and surface lands	1,407,518		1,409,408
	Gas gathering equipment	1,074,265		1,058,008
	Gas wells and related equipment	780,212		688,548
	Airshafts	443,657		397,466
	Mine development	416,296		354,607
	Leased coal lands	388,033		388,020
	Coal advance mining royalties	387,199		381,348
	Other gas assets	124,903		126,239
	Gas advance royalties	22,134		22,668
	Total Property Plant and Equipment	14,160,967		13,578,509
	Less: Accumulated DD&A	4,384,209		4,136,247
	Total Net PP&E	$	9,776,758	$	9,442,262

LongTerm_Debt_Tables

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2014
Long-term Debt, Other Disclosures [Abstract]	'
Schedule of Long-term Debt	'
		June 30,		December 31,
		2014		2013
	Debt:
	Senior notes due April 2017 at 8.00%, issued at par value	$	—	$	1,500,000
	Senior notes due April 2020 at 8.25%, issued at par value	1,250,000		1,250,000
	Senior notes due March 2021 at 6.375%, issued at par value	250,000		250,000
	Senior notes due April 2022 at 5.875%, issued at par value	1,600,000		—
	MEDCO revenue bonds in series due September 2025 at 5.75%	102,865		102,865
	Advance royalty commitments (7.93% weighted average interest rate for June 30, 2014 and December 31, 2013)	11,182		11,182
	Other long-term notes maturing at various dates through 2031 (total value of $5,236 and $5,923 less unamortized discount of $835 and $1,050 at June 30, 2014 and December 31, 2013, respectively).	4,401		4,873
		3,218,448		3,118,920
	Less amounts due in one year *	3,535		2,957
	Long-Term Debt	$	3,214,913	$	3,115,963

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2014
Long-term Purchase Commitment [Table Text Block]	'
	At June 30, 2014, CONSOL Energy has provided the following financial guarantees, unconditional purchase obligations and letters of credit to certain third parties, as described by major category in the following table. These amounts represent the maximum potential total of future payments that we could be required to make under these instruments. These amounts have not been reduced for potential recoveries under recourse or collateralization provisions. Generally, recoveries under reclamation bonds would be limited to the extent of the work performed at the time of the default. No amounts related to these financial guarantees and letters of credit are recorded as liabilities on the financial statements. CONSOL Energy management believes that these guarantees will expire without being funded, and therefore the commitments will not have a material adverse effect on financial condition.
		Amount of Commitment Expiration Per Period
		Total			Less Than			1-3 Years			3-5 Years			Beyond
		Amounts			1  Year									5  Years
		Committed
	Letters of Credit:
	Employee-Related	$	151,311		$	117,542		$	33,769		$	—		$	—
	Environmental	39,363			39,363			—			—			—
	Other	131,802			58,979			72,823			—			—
	Total Letters of Credit	322,476			215,884			106,592			—			—
	Surety Bonds:
	Employee-Related	204,893			194,893			10,000			—			—
	Environmental	678,943			673,076			5,867			—			—
	Other	26,887			26,840			46			—			1
	Total Surety Bonds	910,723			894,809			15,913			—			1
	Guarantees:
	Coal	233,260			150,300			82,960			—			—
	Other	67,717			35,611			10,470			14,462			7,174
	Total Guarantees	300,977			185,911			93,430			14,462			7,174
	Total Commitments	$	1,534,176		$	1,296,604		$	215,935		$	14,462		$	7,175
Unrecorded Unconditional Purchase Obligations Disclosure	'
	ONSOL Energy and CNX Gas enter into long-term unconditional purchase obligations to procure major equipment purchases, natural gas firm transportation, gas drilling services and other operating goods and services. These purchase obligations are not recorded on the Consolidated Balance Sheets. As of June 30, 2014, the purchase obligations for each of the next five years and beyond were as follows:
	Obligations Due	Amount
	Less than 1 year	$	172,295
	1 - 3 years	381,321
	3 - 5 years	355,532
	More than 5 years	763,883
	Total Purchase Obligations	$	1,673,031
Supply Commitment [Table Text Block]	'
	osts related to these purchase obligations include:
			Three Months Ended						Six Months Ended
			June 30,						June 30,
			2014			2013			2014			2013
	Major Equipment Purchases		$	11,474		$	5,654		$	90,161		$	8,747
	Firm Transportation and Processing Expense		25,424			21,689			49,363			42,821
	Gas Drilling Obligations		30,226			25,904			52,450			54,768
	Total Costs Related to Purchase Obligations		$	67,124		$	53,247		$	191,974		$	106,336

Derivative_Instruments_Tables

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of Derivative Instruments	'
	The effect of derivative instruments in cash flow hedging relationships on the Consolidated Statements of Income and the Consolidated Statements of Stockholders' Equity net of tax were as follows:
		For the Three Months Ended June 30,
		2014			2013
	Natural Gas Price Swaps and Options
	Beginning Balance – Accumulated OCI	$	11,841		$	35,453
	(Loss)/Gain recognized in Accumulated OCI	(12,218		)	45,749
	Less: (Loss)/Gain reclassified from Accumulated OCI into Natural Gas, NGL's and Oil Sales	(6,951		)	9,528
	Ending Balance – Accumulated OCI	$	6,574		$	71,674
	Gain/(Loss) recognized in Natural Gas, NGL's and Oil Sales for ineffectiveness	$	508		$	(3,753	)
		For the Six Months Ended June 30,
		2014			2013
	Natural Gas Price Swaps and Options
	Beginning Balance – Accumulated OCI	$	42,493		$	76,761
	(Loss)/Gain recognized in Accumulated OCI	(59,183		)	27,154
	Less: (Loss)/Gain reclassified from Accumulated OCI into Natural Gas, NGL's and Oil Sales	(23,264		)	32,241
	Ending Balance – Accumulated OCI	$	6,574		$	71,674
	Gain/(Loss) recognized in Natural Gas, NGL's and Oil Sales for ineffectiveness	$	863		$	(2,712	)
	There were no amounts excluded from the assessment of hedge effectiveness in 2014 or 2013.

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	'
	The financial instruments measured at fair value on a recurring basis are summarized below:
		Fair Value Measurements at June 30, 2014									Fair Value Measurements at December 31, 2013
	Description	Quoted Prices in			Significant			Significant			Quoted Prices in			Significant		Significant
		Active Markets			Other			Unobservable			Active Markets			Other		Unobservable
		for Identical			Observable			Inputs			for Identical			Observable		Inputs
		Liabilities			Inputs			(Level 3)			Liabilities			Inputs		(Level 3)
		(Level 1)			(Level 2)						(Level 1)			(Level 2)
	Gas Cash Flow Hedges	$	—		$	8,761		$	—		$	—		$	65,449	$	—
	Murray Energy Guarantees	$	—		$	—		$	3,000		$	—		$	—	$	3,000
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block]	'
		June 30, 2014						December 31, 2013
		Carrying			Fair			Carrying			Fair
		Amount			Value			Amount			Value
	Cash and Cash Equivalents	$	147,393		$	147,393		$	327,420		$	327,420
	Long-Term Debt	$	(3,218,448	)	$	(3,430,827	)	$	(3,118,920	)	$	(3,299,875	)

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended																																																																6 Months Ended
	Jun. 30, 2014																																	Jun. 30, 2013																																	Jun. 30, 2014
Segment Reporting [Abstract]	'																																	'																																	'
Industry segment results	'																																	'																																	'
		Marcellus		Coalbed		Shallow Oil and Gas			Other			Total		Thermal		Low Volatile		High Volatile		Other			Total Coal		All		Corporate,			Consolidated					Marcellus		Coalbed		Shallow Oil and Gas			Other			Total E&P			Thermal		Low Volatile		High Volatile		Other			Total		All		Corporate,			Consolidated
		Shale		Methane					Gas			E&P				Metallurgical		Metallurgical		Coal					Other		Adjustments								Shale		Methane					Gas								Metallurgical		Metallurgical		Coal			Coal		Other		Adjustments
																											&																																		&
																											Eliminations																																		Eliminations
	Sales—outside	$	104,584	$	80,681	$	26,556		$	17,922		$	229,743	$	446,416	$	66,771	$	20,483	$	2,628		$	536,298	$	70,087	$	—		$	836,128		(A)	Sales—outside	$	46,577	$	87,799	$	33,745		$	3,115		$	171,236		$	335,926	$	111,006	$	53,189	$	4,939		$	505,060	$	65,218	$	—		$	741,514	(D)
	Sales—purchased gas	—		—		—			1,404			1,404		—		—		—		—			—		—		—			1,404				Sales—purchased gas	—		—		—			1,406			1,406			—		—		—		—			—		—		—			1,406
	Sales—gas royalty interests	—		—		—			18,335			18,335		—		—		—		—			—		—		—			18,335				Sales—gas royalty interests	—		—		—			17,028			17,028			—		—		—		—			—		—		—			17,028
	Freight—outside	—		—		—			—			—		—		—		—		10,109			10,109		—		—			10,109				Freight—outside	—		—		—			—			—			—		—		—		9,660			9,660		—		—			9,660
	Intersegment transfers	—		—		—			555			555		—		—		—		—			—		20,034		(20,589		)	—				Intersegment transfers	—		—		—			926			926			—		—		—		—			—		32,427		(33,353		)	—
	Total Sales and Freight	$	104,584	$	80,681	$	26,556		$	38,216		$	250,037	$	446,416	$	66,771	$	20,483	$	12,737		$	546,407	$	90,121	$	(20,589	)	$	865,976			Total Sales and Freight	$	46,577	$	87,799	$	33,745		$	22,475		$	190,596		$	335,926	$	111,006	$	53,189	$	14,599		$	514,720	$	97,645	$	(33,353	)	$	769,608
	Earnings (Loss) Before Income Taxes	$	34,764	$	17,949	$	(5,096	)	$	(24,242	)	$	23,375	$	111,906	$	9,292	$	7,571	$	(9,167	)	$	119,602	$	1,755	$	(168,453	)	$	(23,721	)	(B)	Earnings (Loss) Before Income Taxes	$	11,680	$	22,125	$	(5,591	)	$	(32,821	)	$	(4,607	)	$	87,915	$	30,818	$	16,768	$	(29,716	)	$	105,785	$	4,887	$	(67,938	)	$	38,127	(E)
	Segment assets											$	6,797,166										$	4,110,704	$	297,044	$	361,733		$	11,566,647		(C)	Segment assets											$	6,170,531											$	4,211,872	$	363,819	$	2,006,706		$	12,752,928	(F)
	Depreciation, depletion and amortization											$	71,499										$	65,086	$	1,314	$	—		$	137,899			Depreciation, depletion and amortization											$	52,846											$	55,247	$	1,436	$	—		$	109,529
	Capital expenditures											$	304,486										$	63,269	$	531	$	—		$	368,286			Capital expenditures											$	188,464											$	163,097	$	6,074	$	—		$	357,635
	(A)    Included in the Coal segment are sales of $104,919 to Duke Energy, which comprises over 10% of sales.
	(B)     Includes equity in earnings of unconsolidated affiliates of $6,996, $6,933 and $133 for E&P, Coal and All Other, respectively.																																	(D)	Included in the Coal segment are sales of $127,734 and $84,602 to Xcoal Energy & Resources and Duke Energy, which comprises over 10% of sales.
	(C)    Includes investments in unconsolidated equity affiliates of $259,870, $23,128 and $69,189 for E&P, Coal and All Other, respectively.
																																		(E)	Includes equity in earnings of unconsolidated affiliates of $1,031, $10,762 and $76 for E&P, Coal and All Other, respectively.
																																		(F)    Includes investments in unconsolidated equity affiliates of $170,589, $22,119 and $63,389 for E&P, Coal and All Other, respectively.
Reconciliation of Revenue and Operating Income from Segments to Consolidated	'																																	'																																	'
																																																																			Earnings Before Income Taxes:
																																																																				For the Three Months Ended June 30,						For the Six Months Ended June 30,
																																																																				2014			2013			2014			2013
																																																																			Segment Earnings Before Income Taxes for total reportable business segments	$	142,977		$	101,178		$	327,685		$	200,192
																																																																			Segment Earnings Before Income Taxes for all other businesses	1,755			4,887			3,252			7,461
																																																																			Interest expense, net and other non-operating activity (M)	(144,013		)	(56,403		)	(197,956		)	(109,063		)
																																																																			Other Corporate Items (M)	(24,440		)	(11,535		)	(26,522		)	(65,079		)
																																																																			Earnings Before Income Taxes	$	(23,721	)	$	38,127		$	106,459		$	33,511
Reconciliation of Assets and Liabilities from Segment to Consolidated	'																																	'																																	'
																																																																			Total Assets:	June 30,
																																																																				2014			2013
																																																																			Segment assets for total reportable business segments	$	10,907,870		$	10,382,403
																																																																			Segment assets for all other businesses	297,044			363,819
																																																																			Items excluded from segment assets:
																																																																			Cash and other investments (M)	136,266			45,885
																																																																			Recoverable income taxes	47,060			1,930
																																																																			Deferred tax assets	137,716			84,402
																																																																			Bond issuance costs	40,691			38,102
																																																																			Discontinued Operations	—			1,836,387
																																																																			Total Consolidated Assets	$	11,566,647		$	12,752,928
																																																																			_________________________
																																																																			(M) Excludes amounts specifically related to the E&P segment.

Guarantor_Subsidiaries_Financi

Guarantor Subsidiaries Financial Information (Tables)	6 Months Ended
	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]	'
Guarantor FInancial Statements [Table Text Block] [Table Text Block]	'
	Income Statement for the Three Months Ended June 30, 2013 (unaudited):
		Parent			CNX Gas			Other			Non-			Elimination			Consolidated
		Issuer			Guarantor			Subsidiary			Guarantors
								Guarantors
	Revenues and Other Income:
	Natural Gas, NGLs and Oil Sales	$	—		$	172,139		$	—		$	—		$	(903	)	$	171,236
	Coal Sales	—			—			505,060			—			—			505,060
	Other Outside Sales	—			—			11,608			53,610			—			65,218
	Gas Royalty Interests and Purchased Gas Sales	—			18,434			—			—			—			18,434
	Freight-Outside Coal	—			—			9,660			—			—			9,660
	Miscellaneous Other Income	198,207			6,087			(12,257		)	5,407			(168,924		)	28,520
	Gain (Loss) on Sale of Assets	—			5,169			24,873			(3		)	—			30,039
	Total Revenue and Other Income	198,207			201,829			538,944			59,014			(169,827		)	828,167
	Costs and Expenses:
	Exploration and Production Costs
	Lease Operating Expense	—			25,221			—			—			—			25,221
	Transportation, Gathering and Compression	—			48,871			—			—			—			48,871
	Production, Ad Valorem, and Other Fees	—			7,409			—			—			—			7,409
	Direct Administrative and Selling	—			11,803			—			—			—			11,803
	Depreciation, Depletion and Amortization	—			52,846			—			—			—			52,846
	Exploration and Production Related Other Costs	—			10,406			—			—			—			10,406
	Production Royalty Interests and Purchased Gas Costs	—			14,605			—			—			(10		)	14,595
	Other Corporate Expenses	—			22,557			—			—			—			22,557
	General and Administrative	—			10,472			—			—			—			10,472
	Total Exploration and Production Costs	—			204,190			—			—			(10		)	204,180
	Coal Costs
	Operating and Other Costs	1,996			—			264,775			—			63,163			329,934
	Royalties and Production Taxes	—			—			26,438			—			—			26,438
	Direct Administrative and Selling	—			—			12,252			—			—			12,252
	Depreciation, Depletion and Amortization	5,931			—			49,316			—			—			55,247
	Freight Expense	—			—			9,660			—			—			9,660
	General and Administrative Costs	—			—			10,038			—			—			10,038
	Other Corporate Expenses	11,996			—			—			—			—			11,996
	Total Coal Costs	19,923			—			372,479			—			63,163			455,565
	Other Costs
	Miscellaneous Operating Expense	22,533			—			5,006			54,685			(8,352		)	73,872
	General and Administrative Costs	—			—			174			296			—			470
	Depreciation, Depletion and Amortization	364			—			574			498			—			1,436
	Loss on Extinguishment of Debt	—			—			—			—			—			—
	Interest Expense	50,807			2,135			1,679			10			(114		)	54,517
	Total Other Costs	73,704			2,135			7,433			55,489			(8,466		)	130,295
	Total Costs And Expenses	93,627			206,325			379,912			55,489			54,687			790,040
	Earnings (Loss) Before Income Tax	104,580			(4,496		)	159,032			3,525			(224,514		)	38,127
	Income Taxes	117,106			(1,747		)	(81,749		)	(4,045		)	—			29,565
	(Loss) Income From Continuing Operations	(12,526		)	(2,749		)	240,781			7,570			(224,514		)	8,562
	Loss From Discontinued Operations, net	—			—			—			(21,375		)	—			(21,375		)
	Net (Loss) Income	(12,526		)	(2,749		)	240,781			(13,805		)	(224,514		)	(12,813		)
	Less: Net Loss Attributable to Noncontrolling Interests	—			(287		)	—			—			—			(287		)
	Net (Loss) Income Attributable to CONSOL Energy Shareholders	$	(12,526	)	$	(2,462	)	$	240,781		$	(13,805	)	$	(224,514	)	$	(12,526	)
	Income Statement for the Three Months Ended June 30, 2014 (unaudited):
		Parent			CNX Gas			Other			Non-			Elimination			Consolidated
		Issuer			Guarantor			Subsidiary			Guarantors
								Guarantors
	Revenues and Other Income:
	Natural Gas, NGLs and Oil Sales	$	—		$	230,299		$	—		$	—		$	(556	)	$	229,743
	Coal Sales	—			—			536,298			—			—			536,298
	Other Outside Sales	—			—			10,027			60,060			—			70,087
	Gas Royalty Interests and Purchased Gas Sales	—			19,739			—			—			—			19,739
	Freight-Outside Coal	—			—			10,109			—			—			10,109
	Miscellaneous Other Income	91,968			9,673			57,623			2,740			(92,027		)	69,977
	Gain (Loss) on Sale of Assets	—			2,920			(1,505		)	2			—			1,417
	Total Revenue and Other Income	91,968			262,631			612,552			62,802			(92,583		)	937,370
	Costs and Expenses:
Exploration and Production Costs
Lease Operating Expense	—			26,374			—			—			—			26,374
Transportation, Gathering and Compression	—			57,796			—			—			—			57,796
Production, Ad Valorem, and Other Fees	—			10,145			—			—			—			10,145
Direct Administrative and Selling	—			13,503			—			—			—			13,503
Depreciation, Depletion and Amortization	—			71,499			—			—			—			71,499
Exploration and Production Related Other Costs	—			4,624			—			—			—			4,624
Production Royalty Interests and Purchased Gas Costs	—			16,672			—			—			—			16,672
Other Corporate Expenses	—			21,012			—			—			—			21,012
General and Administrative	—			15,517			—			—			—			15,517
Total Exploration and Production Costs	—			237,142			—			—			—			237,142
Coal Costs
Operating and Other Costs	5,571			—			342,526			—			(556		)	347,541
Royalties and Production Taxes	—			—			27,603			—						27,603
Direct Administrative and Selling	—			—			11,816			—			—			11,816
Depreciation, Depletion and Amortization	157			—			64,929			—			—			65,086
Freight Expense	—			—			10,109			—			—			10,109
General and Administrative Costs	—			—			10,450			—			—			10,450
Other Corporate Expenses	12,035			—			—			—			—			12,035
Total Coal Costs	17,763			—			467,433			—			(556		)	484,640
Other Costs
Miscellaneous Operating Expense	32,986			—			7,593			59,644			(1,144		)	99,079
General and Administrative Costs	—			—			207			221			—			428
Depreciation, Depletion and Amortization	7			—			817			490			—			1,314
Loss on Debt Extinguishment	74,277			—			—			—			—			74,277
Interest Expense	61,389			2,155			1,949			40			(1,322		)	64,211
Total Other Costs	168,659			2,155			10,566			60,395			(2,466		)	239,309
Total Costs And Expenses	186,422			239,297			477,999			60,395			(3,022		)	961,091
(Loss) Earnings Before Income Tax	(94,454		)	23,334			134,553			2,407			(89,561		)	(23,721		)
Income Taxes	(69,519		)	7,833			61,991			909			—			1,214
(Loss) Income From Continuing Operations	(24,935		)	15,501			72,562			1,498			(89,561		)	(24,935		)
Income From Discontinued Operations, net	—			—			—			—			—			—
Net (Loss) Income Attributable to CONSOL Energy Shareholders	$	(24,935	)	$	15,501		$	72,562		$	1,498		$	(89,561	)	$	(24,935	)
Guarantor Condensed Cash Flow [Table Text Block]	'
	Cash Flow for the Six Months Ended June 30, 2013 (unaudited):
		Parent			CNX Gas			Other Subsidiary Guarantors			Non-			Elimination			Consolidated
					Guarantor						Guarantors
	Net Cash Provided by (Used in) Continuing Operations	$	168,661		$	263,284		$	(4,205	)	$	(173,594	)	$	51,800		$	305,946
	Net Cash Provided by Discontinued Operating Activities	—			—			—			87,444			—			87,444
	Net Cash Provided by (Used in) Operating Activities	$	168,661		$	263,284		$	(4,205	)	$	(86,150	)	$	51,800		$	393,390
	Cash Flows from Investing Activities:
	Capital Expenditures	$	(7,511	)	$	(395,593	)	$	(304,348	)	$	—		$	—		$	(707,452	)
	Change in Restricted Cash	—			—			68,673			—			—			68,673
	Proceeds From Sales of Assets	(133,175		)	5,644			235,144			13			—			107,626
	(Investments in), net of Distributions from, Equity Affiliates	—			(22,501		)	5,901			—			—			(16,600		)
	Net Cash (Used in) Provided by Continuing Operations	(140,686		)	(412,450		)	5,370			13			—			(547,753		)
	Net Cash Provided by Discontinued Investing Activities	—			—			—			82,627			—			82,627
	Net Cash (Used in) Provided by Investing Activities	$	(140,686	)	$	(412,450	)	$	5,370		$	82,640		$	—		$	(465,126	)
	Cash Flows from Financing Activities:
	Proceeds from (Payments on) Short-Term Borrowings	$	—		$	224,800		$	—		$	—		$	(51,800	)	$	173,000
	Payments on Miscellaneous Borrowings	(26,280		)	—			(3,357		)	(327		)	—			(29,964		)
	Proceeds from Securitization Facility	—			—			—			2,873			—			2,873
	Tax Benefit from Stock-Based Compensation	2,185			—			—			—			—			2,185
	Dividends Paid	21,399			(50,000		)	—			—			—			(28,601		)
	Proceeds from Issuance of Common Stock	2,497			—			—			—			—			2,497
	Capital Lease Payments	—			(2,135		)	2,135			—			—			—
	Net Cash (Used in) Provided by Continuing Operations	(199		)	172,665			(1,222		)	2,546			(51,800		)	121,990
	Net Cash Used in Discontinued Financing Activities	—			—			—			(198		)	—			(198		)
	Net Cash (Used in) Provided by Financing Activities	$	(199	)	$	172,665		$	(1,222	)	$	2,348		$	(51,800	)	$	121,792
	Cash Flow for the Six Months Ended June 30, 2014 (unaudited):
		Parent			CNX Gas			Other Subsidiary Guarantors			Non-			Elimination			Consolidated
					Guarantor						Guarantors
	Net Cash (Used in) Provided by Continuing Operations	$	(159,864	)	$	305,113		$	148,731		$	21,426		$	262,613		$	578,019
	Net Cash Used in Discontinued Operating Activities	—			—			—			(20,872		)	—			(20,872		)
	Net Cash (Used in) Provided by Operating Activities	$	(159,864	)	$	305,113		$	148,731		$	554		$	262,613		$	557,147
	Cash Flows from Investing Activities:
	Capital Expenditures	$	(1,139	)	$	(570,456	)	$	(247,700	)	$	—		$	—		$	(819,295	)
	Proceeds From Sales of Assets	(13,627		)	52,432			94,265			5			—			133,075
	(Investments in), net of Distributions from, Equity Affiliates	—			(41,000		)	2,000			—			—			(39,000		)
	Net Cash (Used in) Provided by Continuing Operations	(14,766		)	(559,024		)	(151,435		)	5			—			(725,220		)
	Net Cash Used in Discontinued Investing Activities	—			—			—			—			—			—
	Net Cash (Used in) Provided by Investing Activities	$	(14,766	)	$	(559,024	)	$	(151,435	)	$	5		$	—		$	(725,220	)
	Cash Flows from Financing Activities:
	(Payments on) Proceeds from Short-Term Borrowings	$	(11,736	)	$	262,613		$	—		$	—		$	(262,613	)	$	(11,736	)
	Payments on Miscellaneous Borrowings	(2,493		)	—			(252		)	(422		)	—			(3,167		)
	Proceeds from Long-Term Borrowings	1,600,000			—			—			—			—			1,600,000
	Payments on Long-Term Borrowings	(1,583,965		)	—			—			—			—			(1,583,965		)
	Tax Benefit from Stock-Based Compensation	2,413			—			—			—			—			2,413
	Dividends Paid	(28,733		)	—			—			—			—			(28,733		)
	Proceeds from Issuance of Common Stock	13,234			—			—			—			—			13,234
	Other Financing Activities	—			(2,956		)	2,956			—			—			—
	Net Cash (Used in) Provided by Continuing Operations	(11,280		)	259,657			2,704			(422		)	(262,613		)	(11,954		)
	Net Cash Used in Discontinued Financing Activities	—			—			—			—			—			—
	Net Cash (Used in) Provided by Financing Activities	$	(11,280	)	$	259,657		$	2,704		$	(422	)	$	(262,613	)	$	(11,954	)
Guarantor Condensed Comprehensive Income [Table Text Block]	'
	Statement of Comprehensive Income for the Six Months Ended June 30, 2013 (unaudited):
		Parent			CNX Gas			Other Subsidiary Guarantors			Non-			Elimination			Consolidated
					Guarantor						Guarantors
	Net (Loss) Income	$	(14,090	)	$	(3,074	)	$	340,822		$	(9,674	)	$	(328,618	)	$	(14,634	)
	Other Comprehensive Income (Loss):
	Actuarially Determined Long-Term Liability Adjustments	88,661			—			88,661			—			(88,661		)	88,661
	Net Increase (Decrease) in the Value of Cash Flow Hedge	27,154			27,154			—			—			(27,154		)	27,154
	Reclassification of Cash Flow Hedge from OCI to Earnings	(32,241		)	(32,241		)	—			—			32,241			(32,241		)
	Other Comprehensive Income (Loss):	83,574			(5,087		)	88,661			—			(83,574		)	83,574
	Comprehensive Income (Loss)	69,484			(8,161		)	429,483			(9,674		)	(412,192		)	68,940
	Less: Comprehensive (Loss) Attributable to Noncontrolling Interest	—			(544		)	—			—			—			(544		)
	Comprehensive Income (Loss) Attributable to CONSOL Energy Inc. Shareholders	$	69,484		$	(7,617	)	$	429,483		$	(9,674	)	$	(412,192	)	$	69,484
		Parent			CNX Gas			Other Subsidiary Guarantors			Non-			Elimination			Consolidated
					Guarantor						Guarantors
	Net (Loss) Income	$	(24,935	)	$	15,501		$	72,562		$	1,498		$	(89,561	)	$	(24,935	)
	Other Comprehensive (Loss) Income:
	Actuarially Determined Long-Term Liability Adjustments	(3,798		)	—			(3,798		)	—			3,798			(3,798		)
	Net (Decrease) Increase in the Value of Cash Flow Hedge	(12,218		)	(12,218		)	—			—			12,218			(12,218		)
	Reclassification of Cash Flow Hedge from OCI to Earnings	6,951			6,951			—			—			(6,951		)	6,951
	Other Comprehensive (Loss) Income:	(9,065		)	(5,267		)	(3,798		)	—			9,065			(9,065		)
	Comprehensive (Loss) Income Attributable to CONSOL Energy Inc. Shareholders	$	(34,000	)	$	10,234		$	68,764		$	1,498		$	(80,496	)	$	(34,000	)
	Statement of Comprehensive Income for the Three Months Ended June 30, 2013 (unaudited):
		Parent			CNX Gas			Other Subsidiary Guarantors			Non-			Elimination			Consolidated
					Guarantor						Guarantors
	Net (Loss) Income	$	(12,526	)	$	(2,749	)	$	240,781		$	(13,805	)	$	(224,514	)	$	(12,813	)
	Other Comprehensive Income (Loss):
	Actuarially Determined Long-Term Liability Adjustments	42,904			—			42,904			—			(42,904		)	42,904
	Net Increase (Decrease) in the Value of Cash Flow Hedge	45,749			45,749			—			—			(45,749		)	45,749
	Reclassification of Cash Flow Hedge from OCI to Earnings	(9,528		)	(9,528		)	—			—			9,528			(9,528		)
	Other Comprehensive Income (Loss):	79,125			36,221			42,904			—			(79,125		)	79,125
	Comprehensive Income (Loss)	66,599			33,472			283,685			(13,805		)	(303,639		)	66,312
	Less: Comprehensive (Loss) Attributable to Noncontrolling Interest	—			(287		)	—			—			—			(287		)
	Comprehensive Income (Loss) Attributable to CONSOL Energy Inc. Shareholders	$	66,599		$	33,759		$	283,685		$	(13,805	)	$	(303,639	)	$	66,599
Guarantor Balance Sheet [Table Text Block]	'
	lance Sheet at June 30, 2014 (unaudited):
		Parent			CNX Gas			Other			Non-			Elimination			Consolidated
		Issuer			Guarantor			Subsidiary			Guarantors
								Guarantors
	Assets:
	Current Assets:
	Cash and Cash Equivalents	$	134,563		$	11,984		$	—		$	846		$	—		$	147,393
	Accounts and Notes Receivable:
	Trade	—			74,285			—			201,146			—			275,431
	Notes Receivable	1,328			—			—			—			—			1,328
	Other Receivables	43,968			300,672			41,831			4,013			—			390,484
	Inventories	—			15,076			93,925			39,004			—			148,005
	Deferred Income Taxes	127,367			10,349			—			—			—			137,716
	Recoverable Income Taxes	40,402			6,658			—			—			—			47,060
	Prepaid Expenses	27,524			31,406			17,641			1,867			—			78,438
	Total Current Assets	375,152			450,430			153,397			246,876			—			1,225,855
	Property, Plant and Equipment:
	Property, Plant and Equipment	166,798			7,417,046			6,550,916			26,207			—			14,160,967
	Less-Accumulated Depreciation, Depletion and Amortization	118,911			1,329,866			2,915,856			19,576			—			4,384,209
	Total Property, Plant and Equipment-Net	47,887			6,087,180			3,635,060			6,631			—			9,776,758
	Other Assets:
	Investment in Affiliates	12,078,724			259,870			123,405			—			(12,109,812		)	352,187
	Other	146,874			16,685			39,512			8,776			—			211,847
	Total Other Assets	12,225,598			276,555			162,917			8,776			(12,109,812		)	564,034
	Total Assets	$	12,648,637		$	6,814,165		$	3,951,374		$	262,283		$	(12,109,812	)	$	11,566,647
	Liabilities and Equity:
	Current Liabilities:
	Accounts Payable	$	49,144		$	359,479		$	83,650		$	11,736		$	—		$	504,009
	Accounts Payable (Recoverable)—Related Parties	4,406,801			114,744			(5,188,815		)	72,170			595,100			—
	Current Portion Long-Term Debt	1,524			6,546			3,331			726			—			12,127
	Short-Term Notes Payable	—			595,100			—			—			(595,100		)	—
	Other Accrued Liabilities	103,400			120,000			322,966			8,110			—			554,476
	Current Liabilities of Discontinued Operations	—			—			—			13,054			—			13,054
	Total Current Liabilities	4,560,869			1,195,869			(4,778,868		)	105,796			—			1,083,666
	Long-Term Debt:	3,104,101			40,331			113,082			1,867			—			3,259,381
	Deferred Credits and Other Liabilities:
	Deferred Income Taxes	(198,720		)	490,648			—			—			—			291,928
	Postretirement Benefits Other Than Pensions	—			—			959,034			—			—			959,034
	Pneumoconiosis Benefits	—			—			111,519			—			—			111,519
	Mine Closing	—			—			320,902			—			—			320,902
	Gas Well Closing	—			120,508			59,589			—			—			180,097
	Workers’ Compensation	—			—			73,065			341			—			73,406
	Salary Retirement	58,962			—			—			—			—			58,962
	Reclamation	—			—			35,779			—			—			35,779
	Other	63,767			61,550			6,998			—			—			132,315
	Total Deferred Credits and Other Liabilities	(75,991		)	672,706			1,566,886			341			—			2,163,942
	Total CONSOL Energy Inc. Stockholders’ Equity	5,059,658			4,905,259			7,050,274			154,279			(12,109,812		)	5,059,658
	Total Liabilities and Equity	$	12,648,637		$	6,814,165		$	3,951,374		$	262,283		$	(12,109,812	)	$	11,566,647
	Balance Sheet at December 31, 2013:
		Parent			CNX Gas			Other			Non-			Elimination			Consolidated
		Issuer			Guarantor			Subsidiary			Guarantors
								Guarantors
	Assets:
	Current Assets:
	Cash and Cash Equivalents	$	320,473		$	6,238		$	—		$	709		$	—		$	327,420
	Accounts and Notes Receivable:
	Trade	—			71,911			—			260,663			—			332,574
	Notes Receivable	1,238			—			24,623			—			—			25,861
	Other Receivables	17,657			207,128			14,969			4,219			—			243,973
	Inventories	—			15,185			99,320			43,409			—			157,914
	Deferred Income Taxes	219,566			(8,263		)	—			—			—			211,303
	Recoverable Income Taxes	(16,262		)	26,967			—			—			—			10,705
	Prepaid Expenses	43,698			65,701			24,915			1,528			—			135,842
Total Current Assets	586,370			384,867			163,827			310,528			—			1,445,592
Property, Plant and Equipment:
Property, Plant and Equipment	173,719			6,919,972			6,459,014			25,804			—			13,578,509
Less-Accumulated Depreciation, Depletion and Amortization	122,022			1,188,464			2,806,775			18,986			—			4,136,247
Total Property, Plant and Equipment-Net	51,697			5,731,508			3,652,239			6,818			—			9,442,262
Other Assets:
Investment in Affiliates	11,965,054			206,060			70,222			—			(11,949,661		)	291,675
Notes Receivable	125			—			—			—			—			125
Other	145,401			30,728			28,831			9,053			—			214,013
Total Other Assets	12,110,580			236,788			99,053			9,053			(11,949,661		)	505,813
Total Assets	$	12,748,647		$	6,353,163		$	3,915,119		$	326,399		$	(11,949,661	)	$	11,393,667
Liabilities and Equity:
Current Liabilities:
Accounts Payable	$	91,553		$	324,226		$	89,201		$	9,600		$	—		$	514,580
Accounts Payable (Recoverable)-Related Parties	4,629,131			23,287			(5,121,727		)	136,822			332,487			—
Current Portion of Long-Term Debt	1,029			6,258			3,372			796			—			11,455
Short-Term Notes Payable	—			332,487			—			—			(332,487		)	—
Other Accrued Liabilities	144,612			89,080			322,606			9,399			—			565,697
Current Liabilities of Discontinued Operations	—			—			—			28,239			—			28,239
Total Current Liabilities	4,866,325			775,338			(4,706,548		)	184,856			—			1,119,971
Long-Term Debt:	3,005,458			42,852			113,474			1,775			—			3,163,559
Deferred Credits and Other Liabilities:
Deferred Income Taxes	(232,904		)	475,547			—			—			—			242,643
Postretirement Benefits Other Than Pensions	—			—			961,127			—			—			961,127
Pneumoconiosis Benefits	—			—			111,971			—			—			111,971
Mine Closing	—			—			320,723			—			—			320,723
Gas Well Closing	—			119,429			56,174			—			—			175,603
Workers’ Compensation	—			—			71,136			332			—			71,468
Salary Retirement	48,252			—			—			—			—			48,252
Reclamation	—			—			40,706			—			—			40,706
Other	55,227			61,190			14,938			—			—			131,355
Total Deferred Credits and Other Liabilities	(129,425		)	656,166			1,576,775			332			—			2,103,848
Total CONSOL Energy Inc. Stockholders’ Equity	5,006,289			4,878,807			6,931,418			139,436			(11,949,661		)	5,006,289
Total Liabilities and Equity	$	12,748,647		$	6,353,163		$	3,915,119		$	326,399		$	(11,949,661	)	$	11,393,667

Related_Party_Transaction_Tabl

Related Party Transaction (Tables)	3 Months Ended
	Jun. 30, 2014
NOTE 16- RELATED PARTY TRANSACTIONS [Abstract]	'
Related Party Receivables Payables [Table Text Block]	'
		June 30,			December 31,
		2014			2013			Location on Balance Sheet
	Reimbursement for CONE Expenses	$	(478	)	$	(2,168	)	Accounts Receivable–Other
	Reimbursement for Services Provided to CONE	(83		)	(265		)	Accounts Receivable–Other
	CONE Gathering Capital Reimbursement	(283		)	—			Accounts Receivable–Other
	CONE Gathering Fee Payable	5,111			7,881			Accounts Payable
	Net Payable due to CONE	$	4,267		$	5,448

Basis_of_Presentation_AntiDilu

Basis of Presentation Anti-Dilutive Options and Units Exluded from Earnings Per Share (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Antidilutive securities excluded from the computation of diluted earnings per share	6,715,347	6,914,394	359,488	6,914,394
Antidilutive Options [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Antidilutive securities excluded from the computation of diluted earnings per share	4,123,949	4,845,029	359,488	4,845,029
Restricted Stock Units (RSUs) [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Antidilutive securities excluded from the computation of diluted earnings per share	1,265,237	1,383,908	0	1,383,908
Performance Share Units [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Antidilutive securities excluded from the computation of diluted earnings per share	523,357	83,356	0	83,356
Performance Options [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Antidilutive securities excluded from the computation of diluted earnings per share	802,804	602,101	0	602,101
Employee Stock Option [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Share-based comp Options Granted Weighted average exercise price	21.57	9.9	20.41	10.16

Basis_of_Presentation_Sharebas

Basis of Presentation Share-based Compensation (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	439,176	249,751	1,417,885	972,482
Performance Share Units [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Equity awards other than options, vested	0	0	378,971	159,228
Employee Stock Option [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Options Exercised	382,773	160,119	648,112	245,113
Share-based comp Options Granted Weighted average exercise price	21.57	9.9	20.41	10.16
Restricted Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Equity awards other than options, vested	56,403	89,632	390,802	568,141

Basis_of_Presentation_Earnings

Basis of Presentation Earnings Per Share (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income (Loss) from Continuing Operations Attributable to Parent	($24,935)	$8,562	$96,756	$4,838
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	-21,375	-5,687	-19,472
Net Income (Loss) Attributable to Noncontrolling Interest	0	-287	0	-544
Net Income (Loss)	($24,935)	($12,526)	$91,069	($14,090)
Weighted average shares of common stock outstanding:	'	'	'	'
Basic	230,061,395	228,721,980	229,795,193	228,520,886
Effect of stock-based compensation awards	0	0	1,595,988	0
Dilutive	230,061,395	228,721,980	231,391,181	228,520,886
Earnings Per Share:	'	'	'	'
Income (Loss) from Continuing Operations, Per Basic Share	($0.11)	$0.04	$0.42	$0.02
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	$0	($0.09)	($0.02)	($0.08)
Earnings Per Share, Basic	($0.11)	($0.05)	$0.40	($0.06)
Income (Loss) from Continuing Operations, Per Diluted Share	($0.11)	$0.04	$0.42	$0.02
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	$0	($0.09)	($0.03)	($0.08)
Earnings Per Share, Diluted	($0.11)	($0.05)	$0.39	($0.06)

Basis_of_Presentation_Changes_

Basis of Presentation Changes in Accumulated Other Comprehensive Income / (Loss) by component (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	($359,715)	'	($359,715)	'	($325,117)
Other Comprehensive Income (Loss), Net of Tax	-9,065	79,125	-34,598	83,574	'
Accumulated Other Comprehensive Income (Loss) [Member]	'	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-359,715	'	-359,715	'	-325,117
Other comprehensive income before reclassifications	'	'	-81,316	'	'
Amounts reclassified from accumulated other comprehensive income	'	'	46,718	'	'
Other Comprehensive Income (Loss), Net of Tax	'	'	-34,598	'	'
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	6,574	'	6,574	'	42,493
Other comprehensive income before reclassifications	'	'	-59,183	'	'
Amounts reclassified from accumulated other comprehensive income	'	'	23,264	'	'
Other Comprehensive Income (Loss), Net of Tax	'	'	-35,919	'	'
Accumulated Defined Benefit Plans Adjustment [Member]	'	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-366,289	'	-366,289	'	-367,610
Other comprehensive income before reclassifications	'	'	-22,133	'	'
Amounts reclassified from accumulated other comprehensive income	'	'	23,454	'	'
Other Comprehensive Income (Loss), Net of Tax	'	'	$1,321	'	'

Basis_of_Presentation_Reclassi

Basis of Presentation Reclassification of adjustments out of Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'
Natural Gas Swaps	$13,593	($18,088)	$40,857	($54,767)
Tax Benefit of Natural Gas Swaps	-6,642	8,560	-17,593	22,526
Natural Gas Swaps, Net of Tax	6,951	-9,528	23,264	-32,241
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	-2,542	-8,211	-5,084	-16,423
Defined Benefit Plan, Amortization of Gains (Losses)	10,861	23,559	21,507	48,747
Other Comprehensive Income (Loss), Finalization of Pension and Non-Pension Postretirement Plan Valuation, Net of Tax	20,707	5,087	20,707	32,202
Net periodic (benefit) cost	29,026	20,435	37,130	64,526
Tax Expense on Actuarially Determined Long-Term Liabilities	-10,691	-7,800	-13,676	-24,631
Actuarially Determined Long-Term Liability Adjustments, Net of Tax	18,335	12,635	23,454	39,895
Pension Plans, Defined Benefit [Member]	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	-346	-407	-692	-815
Defined Benefit Plan, Amortization of Gains (Losses)	6,106	10,547	11,997	22,722
Other Comprehensive Income (Loss), Finalization of Pension and Non-Pension Postretirement Plan Valuation, Net of Tax	20,707	5,087	20,707	32,202
Net periodic (benefit) cost	$27,178	$17,006	$33,435	$58,293

Dispositions_Details

Dispositions (Details) (USD $)	3 Months Ended	12 Months Ended	3 Months Ended		3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2013	Apr. 30, 2013
	Discontinued Operations [Member]	Discontinued Operations [Member]	Bailey Longwall Shields [Member]	Bailey Longwall Shields [Member]	Potomac coal reserves [Member]	Ryerson Park Lake and Dam [Member]	Ryerson Park Lake and Dam [Member]
							acre
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'	'	'	'
Sale Leaseback Transaction, Net Book Value	'	'	'	$75,357	'	'	'
Benefit Obligations Assumed By Murray Energy	'	2,050,656	'	'	'	'	'
Sale Leaseback Transaction, Net Proceeds	'	'	71,166	'	'	'	'
Proceeds from Sale of Property, Plant, and Equipment	'	825,285	'	'	25,000	'	'
Gain (Loss) on Sale of Property Plant Equipment	'	1,035,346	-358	'	24,663	'	'
Litigation Settlement, Amount	'	'	'	'	'	36,000	'
Restructuring Costs	'	24,715	'	'	'	'	'
Discontinued Operations amount of adjustment to prior period gain on disposal	7,044	'	'	'	'	'	'
Bonus Payment	'	'	'	'	'	$13,728	'
Gas and Oil Area, Undeveloped, Gross	'	'	'	'	'	'	506,000

Acquisitions_Details

Acquisitions (Details) (USD $)	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014	Mar. 31, 2013	Mar. 31, 2013
			Dominion Acquisition Member	Dominion Acquisition Member	Allegheny County Airport b Allegheny County Airport [Member]	Allegheny County Airport b Pittsburgh International Airport [Member] [Member]
						acre
Business Acquisition [Line Items]	'	'	'	'	'	'
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, High	'	'	$190,000,000	'	'	'
Reimbursement From JV Partner	'	'	'	0.5	0.5	'
Payments to Acquire Property, Plant, and Equipment	819,295,000	707,452,000	91,243,000	16,000,000	'	'
Gas and Oil Area, Undeveloped, Gross	'	'	'	'	'	9,300
Bonus Payment in Escrow	'	'	'	'	7.60%	'
Bonus Payment	'	'	'	'	$46,315,000	'

Other_Income_Details

Other Income (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Component of Operating Income [Abstract]	'	'	'	'
Contracts Revenue	$30,000	$0	$30,000	$0
Rental Income, Nonoperating	10,697	1,111	25,605	1,884
Proceeds from Contributions from Affiliates	14,062	11,869	21,512	16,666
Gas Gathering, Transportation, Marketing and Processing Revenue	2,020	733	20,750	5,097
Royalty Revenue	4,476	4,931	9,755	8,757
Bailey Belt Settlement	4,275	0	4,275	0
Right of Way Issuance	513	25	2,413	1,708
Interest Income, Other	676	4,477	1,300	11,401
Gain on Business Interruption Insurance Recovery	0	0	0	2,700
Other Nonoperating Income	3,258	5,374	9,421	8,694
Other Income (including equity earnings)	$69,977	$28,520	$125,031	$56,907

Pension_and_OPEB_Periodic_Cost2

Pension and OPEB - Periodic Cost (Details) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

3 Months Ended

5 Months Ended

6 Months Ended

12 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

In Thousands, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Mar. 31, 2013

31-May-14

Jun. 30, 2014

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Other Postretirement Benefit Plan, Defined Benefit [Member]

Other Postretirement Benefit Plan, Defined Benefit [Member]

Other Postretirement Benefit Plan, Defined Benefit [Member]

Other Postretirement Benefit Plan, Defined Benefit [Member]

Change in Assumptions for Pension Plans [Member]

Change in Assumptions for Pension Plans [Member]

Change in Assumptions for Pension Plans [Member]

Change in Assumptions for Pension Plans [Member]

Change in Assumptions for Pension Plans [Member]

Change in Assumptions for Pension Plans [Member]

Change in Assumptions for Pension Plans [Member]

Discontinued Operations [Member]

Discontinued Operations [Member]

Discontinued Operations [Member]

Discontinued Operations [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Other Postretirement Benefit Plan, Defined Benefit [Member]

Other Postretirement Benefit Plan, Defined Benefit [Member]

Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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Service cost

'

'

'

'

'

$4,483

$5,581

$8,791

$11,287

$2,331

$4,849

$4,663

$9,698

'

'

'

'

'

'

'

'

'

'

'

Interest cost

'

'

'

'

'

8,993

8,909

18,144

17,752

12,097

29,619

24,194

59,237

'

'

'

'

'

'

'

'

'

'

'

Expected return on plan assets

'

'

'

'

'

-12,765

-12,711

-25,512

-24,855

0

0

0

0

'

'

'

'

'

'

'

'

'

'

'

Defined Benefit Plan, Amortization of Prior Service Cost (Credit)

-2,542

-8,211

-5,084

-16,423

'

-346

-407

-692

-815

-2,196

-7,804

-4,392

-15,608

'

'

'

'

'

'

'

'

'

'

'

Amortization of actuarial gain

10,861

23,559

21,507

48,747

'

6,106

10,547

11,997

22,722

6,369

17,595

12,737

35,190

'

'

'

'

'

'

'

'

'

'

'

Other Comprehensive Income (Loss), Finalization of Pension and Non-Pension Postretirement Plan Valuation, Net of Tax

20,707

5,087

20,707

32,202

'

20,707

5,087

20,707

32,202

0

0

0

0

'

'

'

'

'

'

'

'

'

'

'

Net periodic (benefit) cost

29,026

20,435

37,130

64,526

'

27,178

17,006

33,435

58,293

18,601

44,259

37,202

88,517

'

'

'

'

'

'

'

2,517

5,380

25,504

50,898

Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.84%

4.12%

'

4.26%

4.87%

4.00%

'

'

'

'

Pension Contributions

'

'

'

'

'

'

'

16,387

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Benefit Plan, Expected Contributions in Current Fiscal Year

'

'

'

'

'

'

'

9,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Benefit Plan, Plan Amendments

'

'

'

'

'

'

'

'

'

'

'

'

'

-6,490

-48,957

-29,916

41,527

'

'

'

'

'

'

'

Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax

3,798

-42,904

-1,321

-88,661

'

'

'

'

'

'

'

'

'

5,141

33,414

35,261

-14,193

'

'

'

'

'

'

'

Deferred Income Taxes

137,716

'

137,716

'

211,303

'

'

'

'

'

'

'

'

-2,998

-20,630

-21,770

8,276

-2,998

'

'

'

'

'

'

Defined Benefit Plan, Benefits Paid

'

'

'

'

'

'

'

'

'

'

'

$29,915

'

'

'

'

'

'

'

'

'

'

'

'

CWP_and_Workers_Comp_Net_Perio2

CWP and Workers Comp - Net Periodic Costs (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]	'	'	'	'
Amortization of actuarial gain	$10,861	$23,559	$21,507	$48,747
Net periodic (benefit) cost	29,026	20,435	37,130	64,526
Coal Workers Pneumoconiosis [Member]	'	'	'	'
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]	'	'	'	'
Service cost	1,418	2,135	2,837	4,270
Interest cost	1,385	1,808	2,769	3,616
Amortization of actuarial gain	-1,549	-4,212	-3,098	-8,425
State administrative fees and insurance bond premiums	0	0	0	0
Legal and administrative costs	0	0	0	0
Net periodic (benefit) cost	1,254	-269	2,508	-539
Payments for Coal Workers Pnenumoconiosis	'	'	6,062	'
Workers Compensation [Member]	'	'	'	'
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]	'	'	'	'
Service cost	2,445	3,533	4,890	7,066
Interest cost	895	1,655	1,789	3,310
Amortization of actuarial gain	-96	-699	-191	-1,398
State administrative fees and insurance bond premiums	929	1,345	2,039	3,004
Legal and administrative costs	0	591	0	1,182
Net periodic (benefit) cost	4,173	6,425	8,527	13,164
Payments for workers compensation benefits, state administrative fees and surety bond premiums	'	'	6,914	'
Discontinued Operations [Member] | Coal Workers Pneumoconiosis [Member]	'	'	'	'
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]	'	'	'	'
Net periodic (benefit) cost	'	-165	'	-330
Discontinued Operations [Member] | Workers Compensation [Member]	'	'	'	'
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]	'	'	'	'
Net periodic (benefit) cost	'	$2,318	'	$4,853

Income_Taxes_Income_Tax_Reconc

Income Taxes Income Tax Reconciliation (Details) (USD $)	6 Months Ended		3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2009	Mar. 31, 2008	Jun. 30, 2014
	Rate	Rate	Internal Revenue Service (IRS) [Member]	Internal Revenue Service (IRS) [Member]	Internal Revenue Service (IRS) [Member]
Reconciliation of Statutory Federal Tax Rate [Line Items]	'	'	'	'	'
Effective Income Tax Rate Reconciliation, Percent	9.10%	85.60%	'	'	'
Amount	'	'	'	'	'
Unusual or Infrequent, Tax Effect	$7,395	'	'	'	$8,820
Depletion	8,351	'	2,925	4,493	'
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount	956	'	1,402	'	'
Income Tax Reconciliation, Nondeductible Expense, Depletion	20,480	25,471	'	'	'
Percent	'	'	'	'	'
Statutory U.S. Federal Income Tax Rate	35.00%	35.00%	'	'	'
Gain (Loss) on Sale of Properties, Applicable Income Taxes	'	$8,269	'	'	'

Income_Taxes_Additional_Inform

Income Taxes Additional Information (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]	'	'
Income Tax Examination, Increase (Decrease) in Liability from Prior Year	'	$1,585
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	5,144	'
Income Tax Reconciliation, Nondeductible Expense, Depletion	20,480	25,471
Uncertain tax positions	2,540	22,770
Uncertain tax positions that, if recognized, would impact effective tax rate	1,651	2,071
Accrued interest liability relating to uncertain tax positions	1,302	6,200
Interest expense included in accrued interest liability	($4,898)	$675

Income_Taxes_Tax_Examinations_

Income Taxes Tax Examinations (Details) (USD $)	6 Months Ended		3 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2009	Mar. 31, 2008
			Internal Revenue Service (IRS) [Member]	Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]	'	'	'	'
Unrecognized Tax Benefits, Income Tax Penalties Expense	$4,464	$1,001	'	'
Income Tax Reconciliation, Nondeductible Expense, Depletion	20,480	25,471	'	'
Depletion	8,351	'	2,925	4,493
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Amount	$956	'	$1,402	'

Income_Taxes_Discrete_Items_De

Income Taxes Discrete Items (Details) (USD $)	3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	$5,144	$5,144	'
Income Tax Reconciliation, Nondeductible Expense, Depletion	'	20,480	25,471
Unusual or Infrequent, Tax Effect	'	7,395	'
Federal Income Tax Expense (Benefit), Continuing Operations	$1,800	'	'

Inventory_Components_Details

Inventory Components (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Coal	$23,953	$31,944
Merchandise for resale	39,251	38,263
Supplies	84,801	87,707
Total Inventories	148,005	157,914
Excess of replacement cost of merchandise for resl inventories over carrying LIFO value	$19,418	$18,836

Accounts_Receivable_Securitiza1

Accounts Receivable Securitization (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Subordinated Debt	$23,970	'	$48,945
Line of Credit Facility, Collateral Fees, Amount	484	913	'
Proceeds from Accounts Receivable Securitization	'	2,873	'
AR securitization facility [Member]	'	'	'
Line of Credit Facility, Maximum Borrowing Capacity	125,000	'	'
Current borrowing capacity of receivable facility	85,900	'	115,000
Letters of credit amount outstanding	$61,930	'	'
Expiration date of receivables facility	30-Mar-15	'	'

Property_Plant_and_Equipment_D

Property, Plant and Equipment (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Coal and other plant and equipment	$3,711,184	$3,681,051
Drilling Cost	2,228,806	1,937,336
Proven gas properties	1,683,052	1,670,404
Coal properties and surface lands	1,493,708	1,463,406
Unproven gas properties	1,407,518	1,409,408
Gas gathering equipment	1,074,265	1,058,008
Airshafts	780,212	688,548
Mine development	443,657	397,466
Leased coal lands	416,296	354,607
Gas wells and related equipment	388,033	388,020
Coal advance mining royalties	387,199	381,348
Other gas assets	124,903	126,239
Gas advance royalties	22,134	22,668
Total property plant and equipment	14,160,967	13,578,509
Less Accumulated depreciation, depletion and amortization	4,384,209	4,136,247
Total Property, Plant and Equipment-Net	$9,776,758	$9,442,262

Property_Plant_and_Equipment_J

Property, Plant and Equipment Joint Venture Activity (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2011	Jun. 30, 2014	Dec. 31, 2012	Jun. 30, 2012
			acre
Noble JV [Member]	'	'	'	'
Significant Acquisitions and Disposals [Line Items]	'	'	'	'
drill carry remaining	'	$1,816,095	'	'
Drilling commitment carry	'	'	'	1,884,000
Maximum Drilling Commitment Carry	400,000	'	'	'
Gas and Oil Acreage, Unproved, Net	'	'	696,000	'
Hess [Member]	'	'	'	'
Significant Acquisitions and Disposals [Line Items]	'	'	'	'
drill carry remaining	'	$175,582	335,000	'
Gas and Oil Acreage, Unproved, Net	'	'	144,000	'

ShortTerm_Notes_Payable_Detail

Short-Term Notes Payable (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2013
			Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Senior Secured Credit Facility April122016 Member [Member]	Senior Secured Credit Facility April122016 Member [Member]	CNX Gas Senior Secured Credit Facility April122016 Member [Member]
Short-term Debt [Line Items]	'	'	'	'	'	'	'
Credit facility, face amount	'	$1,000,000,000	$2,000,000,000	$1,000,000,000	'	'	$1,000,000,000
Letters of Credit Outstanding, Amount	'	'	'	'	260,473,000	'	'
Letters Of Credit	750,000,000	'	'	'	'	'	'
Deferred Finance Costs, Own-share Lending Arrangement, Issuance Costs, Adjustment	2,989,000,000	'	'	'	'	'	'
Additional Capacity Available On Credit Lines At Request	'	'	'	'	500,000,000	'	'
Minimum interest coverage ratio	'	'	'	'	2.5	'	'
Interest coverage ratio	'	'	'	'	4.15	'	'
Senior secured leverage ratio, maximum	'	'	'	'	1	'	'
Current secured leverage ratio	'	'	'	'	2.59	'	'
Letters of credit outstanding	'	'	'	'	'	206,988,000	87,643,000
Borrowings and issuance of letters of credit remaining capacity	'	'	'	'	1,739,527,000	793,012,000	912,357,000
Interest Payable, Current	$52,859,000	$63,272,000	'	'	'	'	'

LongTerm_Debt_Details

Long-Term Debt (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Capital Lease Obligations, Current	$8,592	$8,498
Debt	3,218,448	3,118,920
Less amounts due in one year	-3,535	-2,957
Long-Term Debt	3,214,913	3,115,963
Accrued interest	52,859	63,272
Senior Notes Due April 2017 at 8.00%	'	'
Debt Instrument [Line Items]	'	'
Debt	0	1,500,000
Senior notes due April 2020 at 8.25%	'	'
Debt Instrument [Line Items]	'	'
Debt	1,250,000	1,250,000
Senior notes due March 2021 at 6.375%	'	'
Debt Instrument [Line Items]	'	'
Debt	250,000	250,000
Senior Secured Notes Due April 2022 Par Value [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt	1,600,000	0
Baltimore Port Facility revenue bonds in series due September 2025 at 5.75%	'	'
Debt Instrument [Line Items]	'	'
Debt	102,865	102,865
Advance royalty commitments	'	'
Debt Instrument [Line Items]	'	'
Debt	11,182	11,182
Other long-term notes maturing at various dates through 2031	'	'
Debt Instrument [Line Items]	'	'
Debt	$4,401	$4,873

Commitments_and_Contingencies_1

Commitments and Contingencies Additional Information (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014
In Thousands, unless otherwise specified			Subsidiaries [Member]	Earl Kennedy [Member]	Ratliff [Member]
Commitments and Contingencies Disclosure [Line Items]	'	'	'	'	'
Loss Contingency, Range of Possible Loss, Portion Not Accrued	$390,096	'	'	'	'
Remaining liability in PCB soil removal action	$554,476	$565,697	'	'	'
Loss Contingency, Pending Claims, Number	'	'	6,900	'	'
Loss Contingency, Damages Sought	'	'	'	'20000	'50000

Unrecorded_Unconditional_Purch

Unrecorded Unconditional Purchase Obligation (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Total costs related to purchase obligations	$67,124	$53,247	$191,974	$106,336
Guarantor Obligations, Maximum Exposure, Undiscounted	1,534,176	'	1,534,176	'
Purchase Commitment [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Less than 1 year	172,295	'	172,295	'
1 - 3 years	381,321	'	381,321	'
3 - 5 years	355,532	'	355,532	'
More than 5 years	763,883	'	763,883	'
Total Purchase Obligations	1,673,031	'	1,673,031	'
Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	1,296,604	'	1,296,604	'
More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	215,935	'	215,935	'
More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	14,462	'	14,462	'
Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	7,175	'	7,175	'
Standby Letters of Credit [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	322,476	'	322,476	'
Standby Letters of Credit [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	215,884	'	215,884	'
Standby Letters of Credit [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	106,592	'	106,592	'
Standby Letters of Credit [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Standby Letters of Credit [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Surety Bonds [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	910,723	'	910,723	'
Surety Bonds [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	894,809	'	894,809	'
Surety Bonds [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	15,913	'	15,913	'
Surety Bonds [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Surety Bonds [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	1	'	1	'
Guarantees [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	300,977	'	300,977	'
Guarantees [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	185,911	'	185,911	'
Guarantees [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	93,430	'	93,430	'
Guarantees [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	14,462	'	14,462	'
Guarantees [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	7,174	'	7,174	'
Employee Related Commitments [Member] | Standby Letters of Credit [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	151,311	'	151,311	'
Employee Related Commitments [Member] | Standby Letters of Credit [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	117,542	'	117,542	'
Employee Related Commitments [Member] | Standby Letters of Credit [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	33,769	'	33,769	'
Employee Related Commitments [Member] | Standby Letters of Credit [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Employee Related Commitments [Member] | Standby Letters of Credit [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Employee Related Commitments [Member] | Surety Bonds [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	204,893	'	204,893	'
Employee Related Commitments [Member] | Surety Bonds [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	194,893	'	194,893	'
Employee Related Commitments [Member] | Surety Bonds [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	10,000	'	10,000	'
Employee Related Commitments [Member] | Surety Bonds [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Employee Related Commitments [Member] | Surety Bonds [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Environment Related Commitments [Member] | Standby Letters of Credit [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	39,363	'	39,363	'
Environment Related Commitments [Member] | Standby Letters of Credit [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	39,363	'	39,363	'
Environment Related Commitments [Member] | Standby Letters of Credit [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Environment Related Commitments [Member] | Standby Letters of Credit [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Environment Related Commitments [Member] | Standby Letters of Credit [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Environment Related Commitments [Member] | Surety Bonds [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	678,943	'	678,943	'
Environment Related Commitments [Member] | Surety Bonds [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	673,076	'	673,076	'
Environment Related Commitments [Member] | Surety Bonds [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	5,867	'	5,867	'
Environment Related Commitments [Member] | Surety Bonds [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Environment Related Commitments [Member] | Surety Bonds [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Other Commitments [Member] | Standby Letters of Credit [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	131,802	'	131,802	'
Other Commitments [Member] | Standby Letters of Credit [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	58,979	'	58,979	'
Other Commitments [Member] | Standby Letters of Credit [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	72,823	'	72,823	'
Other Commitments [Member] | Standby Letters of Credit [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Other Commitments [Member] | Standby Letters of Credit [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Other Commitments [Member] | Surety Bonds [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	26,887	'	26,887	'
Other Commitments [Member] | Surety Bonds [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	26,840	'	26,840	'
Other Commitments [Member] | Surety Bonds [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	46	'	46	'
Other Commitments [Member] | Surety Bonds [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Other Commitments [Member] | Surety Bonds [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	1	'	1	'
Other Commitments [Member] | Guarantees [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	67,717	'	67,717	'
Other Commitments [Member] | Guarantees [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	35,611	'	35,611	'
Other Commitments [Member] | Guarantees [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	10,470	'	10,470	'
Other Commitments [Member] | Guarantees [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	14,462	'	14,462	'
Other Commitments [Member] | Guarantees [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	7,174	'	7,174	'
Coal Segment [Member] | Guarantees [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	233,260	'	233,260	'
Coal Segment [Member] | Guarantees [Member] | Balance on First Anniversary [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	150,300	'	150,300	'
Coal Segment [Member] | Guarantees [Member] | More Than One And Within Three Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	82,960	'	82,960	'
Coal Segment [Member] | Guarantees [Member] | More Than Three And Within Five Years From Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Coal Segment [Member] | Guarantees [Member] | Beyond Five Years of Balance Sheet Date [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	0	'	0	'
Murray Energy [Member]	'	'	'	'
Unrecorded Unconditional Purchase Obligation [Line Items]	'	'	'	'
Contractual Obligation	$3,000	'	$3,000	'

Costs_Related_to_Purchase_Obli

Costs Related to Purchase Obligations (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule of Costs Related to Purchase Obligations [Line Items]	'	'	'	'
Total costs related to purchase obligations	$67,124	$53,247	$191,974	$106,336
Major equipment purchases	'	'	'	'
Schedule of Costs Related to Purchase Obligations [Line Items]	'	'	'	'
Total costs related to purchase obligations	11,474	5,654	90,161	8,747
486210 Pipeline Transportation of Natural Gas [Member]	'	'	'	'
Schedule of Costs Related to Purchase Obligations [Line Items]	'	'	'	'
Total costs related to purchase obligations	25,424	21,689	49,363	42,821
Gas drilling obligations	'	'	'	'
Schedule of Costs Related to Purchase Obligations [Line Items]	'	'	'	'
Total costs related to purchase obligations	$30,226	$25,904	$52,450	$54,768

Derivative_Instruments_Details

Derivative Instruments (Details) (USD $)

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

MMcf

Commodity Contract [Member]

Commodity Contract [Member]

Commodity Contract [Member]

Commodity Contract [Member]

Commodity Contract [Member]

Commodity Contract [Member]

Natural Gas [Member]

Natural Gas [Member]

Natural Gas [Member]

Natural Gas [Member]

Natural Gas [Member]

Accrued Liabilities [Member]

Other Liabilities [Member]

Assets, Total [Member]

Liabilities, Total [Member]

Prepaid Expenses [Member]

Other Assets [Member]

Swap [Member]

Swap [Member]

Swap [Member]

Swap [Member]

Swap [Member]

Other Accrued Liabilities [Member]

Other Liabilities [Member]

Prepaid Expenses [Member]

Other Assets [Member]

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Liability, Current

'

$28,458

'

'

'

'

'

'

'

'

'

'

Derivative Liability, Noncurrent

'

'

4,143

'

'

'

'

'

'

5,885

'

'

Derivative, Nonmonetary Notional Amount

241,400

'

'

'

'

'

'

'

'

'

'

'

Price Risk Cash Flow Hedge Unrealized Gain (Loss) to be Reclassified During Next 12 Months

319

'

'

'

'

'

'

'

'

'

'

'

Derivative Asset, Fair Value, Gross Asset

'

'

'

41,362

'

'

'

83,661

'

'

'

'

Derivative Liability, Fair Value, Gross Liability

'

'

'

'

32,601

'

'

18,212

'

'

'

'

Derivative Asset, Current

'

'

'

'

'

27,593

'

'

12,327

'

59,605

'

Derivative Asset, Noncurrent

'

'

'

'

'

'

$13,769

'

'

'

'

$24,056

The_Effect_of_Derivative_Instr

The Effect of Derivative Instruments on the Consolidated Statement of Income (Details) (Swap [Member], Cash Flow Hedging [Member], Natural Gas [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Swap [Member] | Cash Flow Hedging [Member] | Natural Gas [Member]	'	'	'	'	'	'	'	'
Derivative [Line Items]	'	'	'	'	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$6,574	$71,674	$6,574	$71,674	$11,841	$42,493	$35,453	$76,761
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	-12,218	45,749	-59,183	27,154	'	'	'	'
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	-6,951	9,528	-23,264	32,241	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	$508	($3,753)	$863	($2,712)	'	'	'	'

Financial_Instruments_Measured

Financial Instruments Measured at Fair Value on a Recurring Basis (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Quoted Prices in Active Markets for Identical Liabilities (Level 1)	'	'
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]	'	'
Gas Cash Flow hedges	$0	$0
Significant Other Observable Inputs (Level 2)	'	'
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]	'	'
Gas Cash Flow hedges	8,761	65,449
Significant Unobservable Inputs (Level 3)	'	'
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]	'	'
Gas Cash Flow hedges	0	0
Discontinued Operations [Member] | Quoted Prices in Active Markets for Identical Liabilities (Level 1)	'	'
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]	'	'
Gas Cash Flow hedges	0	0
Discontinued Operations [Member] | Significant Other Observable Inputs (Level 2)	'	'
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]	'	'
Gas Cash Flow hedges	0	0
Discontinued Operations [Member] | Significant Unobservable Inputs (Level 3)	'	'
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]	'	'
Gas Cash Flow hedges	$3,000	$3,000

Carrying_Amounts_and_Fair_Valu

Carrying Amounts and Fair Values of Financial Instruments for Which the Fair Value Option Was Not Elected (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Option, Disclosures Related to Election, Items Existing at Effective Date [Line Items]	'	'	'	'
Cash and Cash Equivalents	$147,393	$327,420	$71,918	$21,862
Long-term debt	-3,218,448	-3,118,920	'	'
Carrying Amount	'	'	'	'
Fair Value, Option, Disclosures Related to Election, Items Existing at Effective Date [Line Items]	'	'	'	'
Cash and Cash Equivalents	147,393	327,420	'	'
Long-term debt	-3,218,448	-3,118,920	'	'
Estimate of Fair Value Measurement [Member]	'	'	'	'
Fair Value, Option, Disclosures Related to Election, Items Existing at Effective Date [Line Items]	'	'	'	'
Cash and Cash Equivalents	147,393	327,420	'	'
Long-term debt	($3,430,827)	($3,299,875)	'	'

Industry_Segment_Results_Detai

Industry Segment Results (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales-Outside	$836,128	$741,514	$1,706,394	$1,525,949	'
Natural Gas, NGLs and Oil Sales	229,743	171,236	496,041	339,078	'
Revenue from Purchased Oil and Gas	1,404	1,406	4,978	2,764	'
Royalty Interest Gas Revenue	18,335	17,028	44,980	31,232	'
Freight-Outside	10,109	9,660	20,054	21,913	'
Segment Reporting - Intersegment Transfers	0	0	0	0	'
Revenue, Net	865,976	769,608	1,776,406	1,581,858	'
Total Revenue and Other Income	937,370	828,167	1,906,523	1,671,110	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-23,721	38,127	106,459	33,511	'
Total Assets	11,566,647	12,752,928	11,566,647	12,752,928	11,393,667
Depreciation, Depletion and Amortization	137,899	109,529	267,015	221,107	'
Segment Reporting - Capital Expenditures	368,286	357,635	819,295	707,452	'
Income (Loss) from Equity Method Investments	'	'	-21,512	-16,667	'
XCoal Energy and Resources [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total Revenue and Other Income	'	127,734	189,921	285,338	'
Duke Energy [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Total Revenue and Other Income	104,919	84,602	188,491	160,932	'
Total Reportable Segments [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	142,977	101,178	327,685	200,192	'
Total Assets	10,907,870	10,382,403	10,907,870	10,382,403	'
Gas	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Natural Gas, NGLs and Oil Sales	229,743	171,236	496,041	339,078	'
Revenue from Purchased Oil and Gas	1,404	1,406	4,978	2,764	'
Royalty Interest Gas Revenue	18,335	17,028	44,980	31,232	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	555	926	1,452	1,762	'
Revenue, Net	'	190,596	547,451	374,836	'
Total Revenue and Other Income	250,037	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	23,375	-4,607	100,919	-5,250	'
Total Assets	6,797,166	6,170,531	6,797,166	6,170,531	'
Depreciation, Depletion and Amortization	71,499	52,846	143,228	105,834	'
Segment Reporting - Capital Expenditures	304,486	188,464	570,456	395,593	'
Income (Loss) from Equity Method Investments	6,996	1,031	12,810	4,212	'
Equity Method Investments	259,870	170,589	259,870	170,589	'
Gas | Marcellus Shale [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Natural Gas, NGLs and Oil Sales	104,584	46,577	229,541	94,988	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	0	0	0	0	'
Revenue, Net	'	46,577	229,541	94,988	'
Total Revenue and Other Income	104,584	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	34,764	11,680	93,869	25,448	'
Gas | Coalbed Methane [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Natural Gas, NGLs and Oil Sales	80,681	87,799	176,752	171,439	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	0	0	0	0	'
Revenue, Net	'	87,799	176,752	171,439	'
Total Revenue and Other Income	80,681	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	17,949	22,125	51,568	43,305	'
Gas | Conventional Gas [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Natural Gas, NGLs and Oil Sales	26,556	33,745	58,901	66,181	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	0	0	0	0	'
Revenue, Net	'	33,745	58,901	66,181	'
Total Revenue and Other Income	26,556	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-5,096	-5,591	-6,853	-9,629	'
Gas | Other Gas	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Natural Gas, NGLs and Oil Sales	17,922	3,115	30,847	6,470	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	555	926	1,452	1,762	'
Revenue, Net	'	22,475	82,257	42,228	'
Total Revenue and Other Income	38,216	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-24,242	-32,821	-37,665	-64,374	'
Coal Segment [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales-Outside	536,298	505,060	1,070,979	1,052,969	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	10,109	9,660	20,054	21,913	'
Segment Reporting - Intersegment Transfers	0	0	0	0	'
Revenue, Net	'	514,720	1,091,033	1,074,882	'
Total Revenue and Other Income	546,407	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	119,602	105,785	226,766	205,442	'
Total Assets	4,110,704	4,211,872	4,110,704	4,211,872	'
Depreciation, Depletion and Amortization	65,086	55,247	121,149	112,437	'
Segment Reporting - Capital Expenditures	63,269	163,097	247,700	304,348	'
Income (Loss) from Equity Method Investments	6,933	10,762	9,793	12,294	'
Equity Method Investments	23,128	22,119	23,128	22,119	'
Coal Segment [Member] | Steam [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales-Outside	446,416	335,926	863,385	681,866	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	0	0	0	0	'
Revenue, Net	'	335,926	863,385	681,866	'
Total Revenue and Other Income	446,416	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	111,906	87,915	260,473	181,373	'
Coal Segment [Member] | Low Volatile Metallurgical [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales-Outside	66,771	111,006	151,312	257,834	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	0	0	0	0	'
Revenue, Net	'	111,006	151,312	257,834	'
Total Revenue and Other Income	66,771	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	9,292	30,818	20,722	85,535	'
Coal Segment [Member] | High Volatile Metallurgical [member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales-Outside	20,483	53,189	49,415	102,667	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	0	0	0	0	'
Revenue, Net	'	53,189	49,415	102,667	'
Total Revenue and Other Income	20,483	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	7,571	16,768	16,675	27,506	'
Coal Segment [Member] | Other Coal [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales-Outside	2,628	4,939	6,867	10,602	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	10,109	9,660	20,054	21,913	'
Segment Reporting - Intersegment Transfers	0	0	0	0	'
Revenue, Net	'	14,599	26,921	32,515	'
Total Revenue and Other Income	12,737	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-9,167	-29,716	-71,104	-88,972	'
Other Segments [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales-Outside	70,087	65,218	139,374	133,902	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	20,034	32,427	39,346	67,905	'
Revenue, Net	'	97,645	178,720	201,807	'
Total Revenue and Other Income	90,121	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	1,755	4,887	3,252	7,461	'
Total Assets	297,044	363,819	297,044	363,819	'
Depreciation, Depletion and Amortization	1,314	1,436	2,638	2,836	'
Segment Reporting - Capital Expenditures	531	6,074	1,139	7,511	'
Income (Loss) from Equity Method Investments	133	76	-1,091	160	'
Intersegment Eliminations [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Sales-Outside	0	0	0	0	'
Revenue from Purchased Oil and Gas	0	0	0	0	'
Royalty Interest Gas Revenue	0	0	0	0	'
Freight-Outside	0	0	0	0	'
Segment Reporting - Intersegment Transfers	-20,589	-33,353	-40,798	-69,667	'
Revenue, Net	'	-33,353	-40,798	-69,667	'
Total Revenue and Other Income	-20,589	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-168,453	-67,938	-224,478	-174,142	'
Total Assets	361,733	2,006,706	361,733	2,006,706	'
Depreciation, Depletion and Amortization	0	'	0	0	'
Segment Reporting - Capital Expenditures	0	'	0	0	'
All Other	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Equity Method Investments	$69,189	$63,389	$69,189	$63,389	'

Reconciliation_of_Segment_Info

Reconciliation of Segment Information, Revenue and Other Income (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	($23,721)	$38,127	$106,459	$33,511
Total Reportable Segments [Member]	'	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	142,977	101,178	327,685	200,192
Other Segments [Member]	'	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	1,755	4,887	3,252	7,461
Excludes Gas Segment [Member]	'	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Interest Income (Expense), Net and Other Non-operating Activity	-144,013	-56,403	-197,956	-109,063
Fees for Disposing Non-core Assets	-24,440	-11,535	26,522	65,079
Intersegment Eliminations [Member]	'	'	'	'
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	($168,453)	($67,938)	($224,478)	($174,142)

Reconciliation_of_Segment_Info1

Reconciliation of Segment Information, Total Assets (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Assets:	'	'	'
Total Assets	$11,566,647	$11,393,667	$12,752,928
Items excluded from segment assets:	'	'	'
Recoverable Income Taxes	47,060	10,705	'
Total Reportable Segments [Member]	'	'	'
Assets:	'	'	'
Total Assets	10,907,870	'	10,382,403
Gas	'	'	'
Assets:	'	'	'
Total Assets	6,797,166	'	6,170,531
Coal Segment [Member]	'	'	'
Assets:	'	'	'
Total Assets	4,110,704	'	4,211,872
Other Segments [Member]	'	'	'
Assets:	'	'	'
Total Assets	297,044	'	363,819
Excludes Gas Segment [Member]	'	'	'
Items excluded from segment assets:	'	'	'
Cash and Other Investments	136,266	'	45,885
Intersegment Eliminations [Member]	'	'	'
Assets:	'	'	'
Total Assets	361,733	'	2,006,706
Items excluded from segment assets:	'	'	'
Recoverable Income Taxes	47,060	'	1,930
Deferred Tax Assets	137,716	'	84,402
Bond Issuance Costs	40,691	'	38,102
Assets of Disposal Group, Including Discontinued Operation	$0	'	$1,836,387

Guarantor_Subsidiaries_Financi1

Guarantor Subsidiaries Financial Information Additional Information (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and Cash Equivalents	$147,393	$327,420	$71,918	$21,862
Debt Instrument, Face Amount	'	1,000,000	'	'
Trade	275,431	332,574	'	'
Notes Receivable, Related Parties, Current	1,328	25,861	'	'
Other Receivables	390,484	243,973	'	'
Inventories	148,005	157,914	'	'
Deferred Income Taxes	137,716	211,303	'	'
Senior notes due April 2020 at 8.25%	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Debt Instrument, Face Amount	1,250,000	'	'	'
Debt Instrument, Interest Rate, Stated Percentage	8.25%	'	'	'
Senior notes due March 2021 at 6.375%	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Debt Instrument, Face Amount	250,000	'	'	'
Debt Instrument, Interest Rate, Stated Percentage	6.38%	'	'	'
Senior Secured Notes Due April 2022 Par Value [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Debt Instrument, Face Amount	$1,600,000	'	'	'
Debt Instrument, Interest Rate, Stated Percentage	5.88%	'	'	'

Guarantor_Subsidiaries_Income_

Guarantor Subsidiaries Income Statement (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule of Condensed Consolidating Statement of Operations [Line Items]	'	'	'	'
Sales-Outside	$836,128	$741,514	$1,706,394	$1,525,949
Natural Gas, NGLs and Oil Sales	229,743	171,236	496,041	339,078
Coal Sales	536,298	505,060	1,070,979	1,052,969
Revenue from Purchased Oil and Gas	1,404	1,406	4,978	2,764
Other Revenue, Net	70,087	65,218	139,374	133,902
Gas Royalty Interests and Purchased Gas Sales	19,739	18,434	49,958	33,996
Freight-Outside	10,109	9,660	20,054	21,913
Other Income (including equity earnings)	69,977	28,520	125,031	56,907
Gain (Loss) on Disposition of Assets	1,417	30,039	5,086	32,345
Total Revenue and Other Income	937,370	828,167	1,906,523	1,671,110
Oil and Gas Property, Lease Operating Expense	26,374	25,221	55,617	47,235
Gas Gathering, Transportation, Marketing and Processing Costs	57,796	48,871	111,578	97,303
Production Tax Expense	10,145	7,409	20,331	11,978
E&P Direct Administration and Selling	13,503	11,803	25,156	22,889
E&P Depreciation, Depletion, and Amortization	71,499	52,846	143,228	105,834
Exploration and Production Costs	4,624	10,406	7,723	20,895
Production Royalty Interests and Purchased Gas Costs	16,672	14,595	42,768	27,360
Other Expenses	21,012	22,557	47,176	47,950
Results of Operations, General and Administrative Related to Oil and Gas Producing Activities	15,517	10,472	32,881	19,062
Oil and Gas Production Expense	237,142	204,180	486,458	400,506
Operating Expenses	347,541	329,934	674,390	664,949
Taxes, Miscellaneous	27,603	26,438	54,091	54,877
Direct Administration, Selling and Other Costs	11,816	12,252	23,110	23,136
Coal Depreciation, Depletion, Amortization	65,086	55,247	121,149	112,437
Freight Expense	10,109	9,660	20,054	21,913
General and Administrative Expense	10,450	10,038	22,963	19,339
Other Cost and Expense, Operating	12,035	11,996	31,330	31,911
Cost of Coal Products and Services	484,640	455,565	947,087	928,562
Other Nonoperating Expense	99,079	73,872	173,628	196,908
Other General and Administrative Expense	428	470	834	893
Depreciation, Depletion and Amortization, Nonproduction	1,314	1,436	2,638	2,836
Gains (Losses) on Extinguishment of Debt	74,277	0	74,277	0
Interest Expense	64,211	54,517	115,142	107,894
Other General Expense	239,309	130,295	366,519	308,531
Total Costs	961,091	790,040	1,800,064	1,637,599
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-23,721	38,127	106,459	33,511
Income Tax Expense (Benefit)	1,214	29,565	9,703	28,673
Income (Loss) from Continuing Operations Attributable to Parent	-24,935	8,562	96,756	4,838
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	-21,375	-5,687	-19,472
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-24,935	-12,813	91,069	-14,634
Net Income (Loss) Attributable to Noncontrolling Interest	0	-287	0	-544
Net Income (Loss)	-24,935	-12,526	91,069	-14,090
Depreciation, Depletion and Amortization	137,899	109,529	267,015	221,107
Parent Issuer [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Operations [Line Items]	'	'	'	'
Natural Gas, NGLs and Oil Sales	0	0	0	0
Coal Sales	0	0	0	0
Other Revenue, Net	0	0	0	0
Gas Royalty Interests and Purchased Gas Sales	0	0	0	0
Freight-Outside	0	0	0	0
Other Income (including equity earnings)	91,968	198,207	261,535	276,183
Gain (Loss) on Disposition of Assets	0	0	0	0
Total Revenue and Other Income	91,968	198,207	261,535	276,183
Oil and Gas Property, Lease Operating Expense	0	0	0	0
Gas Gathering, Transportation, Marketing and Processing Costs	0	0	0	0
Production Tax Expense	0	0	0	0
E&P Direct Administration and Selling	0	0	0	0
E&P Depreciation, Depletion, and Amortization	0	0	0	0
Exploration and Production Costs	0	0	0	0
Production Royalty Interests and Purchased Gas Costs	0	0	0	0
Other Expenses	0	0	0	0
Results of Operations, General and Administrative Related to Oil and Gas Producing Activities	0	0	0	0
Oil and Gas Production Expense	0	0	0	0
Operating Expenses	5,571	1,996	16,602	3,129
Taxes, Miscellaneous	0	0	0	0
Direct Administration, Selling and Other Costs	0	0	0	0
Coal Depreciation, Depletion, Amortization	157	5,931	313	6,077
Freight Expense	0	0	0	0
General and Administrative Expense	0	0	0	0
Other Cost and Expense, Operating	12,035	11,996	31,330	31,911
Cost of Coal Products and Services	17,763	19,923	48,245	41,117
Other Nonoperating Expense	32,986	22,533	40,222	68,139
Other General and Administrative Expense	0	0	0	0
Depreciation, Depletion and Amortization, Nonproduction	7	364	13	370
Gains (Losses) on Extinguishment of Debt	74,277	0	74,277	0
Interest Expense	61,389	50,807	109,822	100,976
Other General Expense	168,659	73,704	224,334	169,485
Total Costs	186,422	93,627	272,579	210,602
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-94,454	104,580	-11,044	65,581
Income Tax Expense (Benefit)	-69,519	117,106	-102,113	79,671
Income (Loss) from Continuing Operations Attributable to Parent	-24,935	-12,526	91,069	-14,090
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-24,935	-12,526	91,069	-14,090
Net Income (Loss) Attributable to Noncontrolling Interest	'	0	'	0
Net Income (Loss)	-24,935	-12,526	91,069	-14,090
CNX Gas Guarantor [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Operations [Line Items]	'	'	'	'
Natural Gas, NGLs and Oil Sales	230,299	172,139	497,493	340,818
Coal Sales	0	0	0	0
Other Revenue, Net	0	0	0	0
Gas Royalty Interests and Purchased Gas Sales	19,739	18,434	49,958	33,996
Freight-Outside	0	0	0	0
Other Income (including equity earnings)	9,673	6,087	37,830	18,856
Gain (Loss) on Disposition of Assets	2,920	5,169	6,072	5,625
Total Revenue and Other Income	262,631	201,829	591,353	399,295
Oil and Gas Property, Lease Operating Expense	26,374	25,221	55,617	47,235
Gas Gathering, Transportation, Marketing and Processing Costs	57,796	48,871	111,578	97,303
Production Tax Expense	10,145	7,409	20,331	11,978
E&P Direct Administration and Selling	13,503	11,803	25,156	22,889
E&P Depreciation, Depletion, and Amortization	71,499	52,846	143,228	105,834
Exploration and Production Costs	4,624	10,406	7,723	20,895
Production Royalty Interests and Purchased Gas Costs	16,672	14,605	42,780	27,381
Other Expenses	21,012	22,557	47,176	47,950
Results of Operations, General and Administrative Related to Oil and Gas Producing Activities	15,517	10,472	32,881	19,062
Oil and Gas Production Expense	237,142	204,190	486,470	400,527
Operating Expenses	0	0	0	0
Taxes, Miscellaneous	0	0	0	0
Direct Administration, Selling and Other Costs	0	0	0	0
Coal Depreciation, Depletion, Amortization	0	0	0	0
Freight Expense	0	0	0	0
General and Administrative Expense	0	0	0	0
Other Cost and Expense, Operating	0	0	0	0
Cost of Coal Products and Services	0	0	0	0
Other Nonoperating Expense	0	0	0	0
Other General and Administrative Expense	0	0	0	0
Depreciation, Depletion and Amortization, Nonproduction	0	0	0	0
Gains (Losses) on Extinguishment of Debt	0	0	0	0
Interest Expense	2,155	2,135	3,964	3,797
Other General Expense	2,155	2,135	3,964	3,797
Total Costs	239,297	206,325	490,434	404,324
Income (Loss) from Continuing Operations before Income Taxes, Domestic	23,334	-4,496	100,919	-5,029
Income Tax Expense (Benefit)	7,833	-1,747	38,547	-1,955
Income (Loss) from Continuing Operations Attributable to Parent	15,501	-2,749	62,372	-3,074
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	15,501	-2,749	62,372	-3,074
Net Income (Loss) Attributable to Noncontrolling Interest	'	-287	'	-544
Net Income (Loss)	15,501	-2,462	62,372	-2,530
Other Guarantors Subsidiaries [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Operations [Line Items]	'	'	'	'
Natural Gas, NGLs and Oil Sales	0	0	0	0
Coal Sales	536,298	505,060	1,070,979	1,052,969
Other Revenue, Net	10,027	11,608	20,510	26,239
Gas Royalty Interests and Purchased Gas Sales	0	0	0	0
Freight-Outside	10,109	9,660	20,054	21,913
Other Income (including equity earnings)	57,623	-12,257	82,436	27,274
Gain (Loss) on Disposition of Assets	-1,505	24,873	-991	26,720
Total Revenue and Other Income	612,552	538,944	1,192,988	1,155,115
Oil and Gas Property, Lease Operating Expense	0	0	0	0
Gas Gathering, Transportation, Marketing and Processing Costs	0	0	0	0
Production Tax Expense	0	0	0	0
E&P Direct Administration and Selling	0	0	0	0
E&P Depreciation, Depletion, and Amortization	0	0	0	0
Exploration and Production Costs	0	0	0	0
Production Royalty Interests and Purchased Gas Costs	0	0	0	0
Other Expenses	0	0	0	0
Results of Operations, General and Administrative Related to Oil and Gas Producing Activities	0	0	0	0
Oil and Gas Production Expense	0	0	0	0
Operating Expenses	342,526	264,775	659,240	599,878
Taxes, Miscellaneous	27,603	26,438	54,091	54,877
Direct Administration, Selling and Other Costs	11,816	12,252	23,110	23,136
Coal Depreciation, Depletion, Amortization	64,929	49,316	120,836	106,360
Freight Expense	10,109	9,660	20,054	21,913
General and Administrative Expense	10,450	10,038	22,963	19,339
Other Cost and Expense, Operating	0	0	0	0
Cost of Coal Products and Services	467,433	372,479	900,294	825,503
Other Nonoperating Expense	7,593	5,006	15,300	30,006
Other General and Administrative Expense	207	174	403	333
Depreciation, Depletion and Amortization, Nonproduction	817	574	1,662	1,484
Gains (Losses) on Extinguishment of Debt	0	0	0	0
Interest Expense	1,949	1,679	3,533	3,321
Other General Expense	10,566	7,433	20,898	35,144
Total Costs	477,999	379,912	921,192	860,647
Income (Loss) from Continuing Operations before Income Taxes, Domestic	134,553	159,032	271,796	294,468
Income Tax Expense (Benefit)	61,991	-81,749	71,640	-46,354
Income (Loss) from Continuing Operations Attributable to Parent	72,562	240,781	200,156	340,822
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	72,562	240,781	200,156	340,822
Net Income (Loss) Attributable to Noncontrolling Interest	'	0	'	0
Net Income (Loss)	72,562	240,781	200,156	340,822
Non-Guarantors [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Operations [Line Items]	'	'	'	'
Natural Gas, NGLs and Oil Sales	0	0	0	0
Coal Sales	0	0	0	0
Other Revenue, Net	60,060	53,610	118,864	107,663
Gas Royalty Interests and Purchased Gas Sales	0	0	0	0
Freight-Outside	0	0	0	0
Other Income (including equity earnings)	2,740	5,407	5,042	10,777
Gain (Loss) on Disposition of Assets	2	-3	5	0
Total Revenue and Other Income	62,802	59,014	123,911	118,440
Oil and Gas Property, Lease Operating Expense	0	0	0	0
Gas Gathering, Transportation, Marketing and Processing Costs	0	0	0	0
Production Tax Expense	0	0	0	0
E&P Direct Administration and Selling	0	0	0	0
E&P Depreciation, Depletion, and Amortization	0	0	0	0
Exploration and Production Costs	0	0	0	0
Production Royalty Interests and Purchased Gas Costs	0	0	0	0
Other Expenses	0	0	0	0
Results of Operations, General and Administrative Related to Oil and Gas Producing Activities	0	0	0	0
Oil and Gas Production Expense	0	0	0	0
Operating Expenses	0	0	0	0
Taxes, Miscellaneous	0	0	0	0
Direct Administration, Selling and Other Costs	0	0	0	0
Coal Depreciation, Depletion, Amortization	0	0	0	0
Freight Expense	0	0	0	0
General and Administrative Expense	0	0	0	0
Other Cost and Expense, Operating	0	0	0	0
Cost of Coal Products and Services	0	0	0	0
Other Nonoperating Expense	59,644	54,685	118,106	109,768
Other General and Administrative Expense	221	296	431	560
Depreciation, Depletion and Amortization, Nonproduction	490	498	963	982
Gains (Losses) on Extinguishment of Debt	0	0	0	0
Interest Expense	40	10	103	21
Other General Expense	60,395	55,489	119,603	111,331
Total Costs	60,395	55,489	119,603	111,331
Income (Loss) from Continuing Operations before Income Taxes, Domestic	2,407	3,525	4,308	7,109
Income Tax Expense (Benefit)	909	-4,045	1,629	-2,689
Income (Loss) from Continuing Operations Attributable to Parent	1,498	7,570	2,679	9,798
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	-21,375	-5,687	-19,472
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,498	-13,805	-3,008	-9,674
Net Income (Loss) Attributable to Noncontrolling Interest	'	0	'	0
Net Income (Loss)	1,498	-13,805	-3,008	-9,674
Consolidation, Eliminations [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Operations [Line Items]	'	'	'	'
Natural Gas, NGLs and Oil Sales	-556	-903	-1,452	-1,740
Coal Sales	0	0	0	0
Other Revenue, Net	0	0	0	0
Gas Royalty Interests and Purchased Gas Sales	0	0	0	0
Freight-Outside	0	0	0	0
Other Income (including equity earnings)	-92,027	-168,924	-261,812	-276,183
Gain (Loss) on Disposition of Assets	0	0	0	0
Total Revenue and Other Income	-92,583	-169,827	-263,264	-277,923
Oil and Gas Property, Lease Operating Expense	0	0	0	0
Gas Gathering, Transportation, Marketing and Processing Costs	0	0	0	0
Production Tax Expense	0	0	0	0
E&P Direct Administration and Selling	0	0	0	0
E&P Depreciation, Depletion, and Amortization	0	0	0	0
Exploration and Production Costs	0	0	0	0
Production Royalty Interests and Purchased Gas Costs	0	-10	-12	-21
Other Expenses	0	0	0	0
Results of Operations, General and Administrative Related to Oil and Gas Producing Activities	0	0	0	0
Oil and Gas Production Expense	0	-10	-12	-21
Operating Expenses	-556	63,163	-1,452	61,942
Taxes, Miscellaneous	'	0	0	0
Direct Administration, Selling and Other Costs	0	0	0	0
Coal Depreciation, Depletion, Amortization	0	0	0	0
Freight Expense	0	0	0	0
General and Administrative Expense	0	0	0	0
Other Cost and Expense, Operating	0	0	0	0
Cost of Coal Products and Services	-556	63,163	-1,452	61,942
Other Nonoperating Expense	-1,144	-8,352	0	-11,005
Other General and Administrative Expense	0	0	0	0
Depreciation, Depletion and Amortization, Nonproduction	0	0	0	0
Gains (Losses) on Extinguishment of Debt	0	0	0	0
Interest Expense	-1,322	-114	-2,280	-221
Other General Expense	-2,466	-8,466	-2,280	-11,226
Total Costs	-3,022	54,687	-3,744	50,695
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-89,561	-224,514	-259,520	-328,618
Income Tax Expense (Benefit)	0	0	0	0
Income (Loss) from Continuing Operations Attributable to Parent	-89,561	-224,514	-259,520	-328,618
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-89,561	-224,514	-259,520	-328,618
Net Income (Loss) Attributable to Noncontrolling Interest	'	0	'	0
Net Income (Loss)	($89,561)	($224,514)	($259,520)	($328,618)

Guarantor_Subsidiaries_Balance

Guarantor Subsidiaries Balance Sheet (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Condensed Consolidating Balance Sheets [Line Items]	'	'	'	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$352,187	$291,675	'	'
Current Assets:	'	'	'	'
Cash and Cash Equivalents	147,393	327,420	71,918	21,862
Accounts and Notes Receivable:	'	'	'	'
Trade	275,431	332,574	'	'
Notes Receivable, Related Parties, Current	1,328	25,861	'	'
Other Receivables	390,484	243,973	'	'
Inventories	148,005	157,914	'	'
Recoverable Income Taxes	47,060	10,705	'	'
Deferred Income Taxes	137,716	211,303	'	'
Prepaid Expenses	78,438	135,842	'	'
Total Current Assets	1,225,855	1,445,592	'	'
Property, Plant and Equipment:	'	'	'	'
Property, Plant and Equipment	14,160,967	13,578,509	'	'
Less-Accumulated Depreciation, Depletion and Amortization	4,384,209	4,136,247	'	'
Total Property, Plant and Equipment-Net	9,776,758	9,442,262	'	'
Other Assets:	'	'	'	'
Notes, Loans and Financing Receivable, Net	'	125	'	'
Other	211,847	214,013	'	'
Total Other Assets	564,034	505,813	'	'
Total Assets	11,566,647	11,393,667	12,752,928	'
Current Liabilities:	'	'	'	'
Accounts Payable	504,009	514,580	'	'
Accounts Payable (Recoverable)- Related Parties	0	0	'	'
Short-Term Notes Payable	'	0	'	'
Current Portion Long-Term Debt	12,127	11,455	'	'
Short-Term Notes Payable	0	'	'	'
Other Accrued Liabilities	554,476	565,697	'	'
Liabilities of Disposal Group, Including Discontinued Operation, Current	13,054	28,239	'	'
Total Current Liabilities	1,083,666	1,119,971	'	'
Long-Term Debt:	3,259,381	3,163,559	'	'
Deferred Credits and Other Liabilities	'	'	'	'
Deferred Tax Liabilities, Net	'	242,643	'	'
Deferred Tax Liabilities, Net, Noncurrent	291,928	242,643	'	'
Postretirement Benefits Other Than Pensions	959,034	961,127	'	'
Pneumoconiosis	111,519	111,971	'	'
Mine Closing	320,902	320,723	'	'
Gas Well Closing	180,097	175,603	'	'
Workers' Compensation	73,406	71,468	'	'
Salary Retirement	58,962	48,252	'	'
Reclamation	35,779	40,706	'	'
Other	132,315	131,355	'	'
Total Deferred Credits and Other Liabilities	2,163,942	2,103,848	'	'
Total CONSOL Energy Inc. Stockholders' Equity	5,059,658	5,006,289	'	'
TOTAL LIABILITIES AND EQUITY	11,566,647	11,393,667	'	'
Parent Issuer [Member]	'	'	'	'
Schedule of Condensed Consolidating Balance Sheets [Line Items]	'	'	'	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	12,078,724	11,965,054	'	'
Current Assets:	'	'	'	'
Cash and Cash Equivalents	134,563	320,473	'	'
Accounts and Notes Receivable:	'	'	'	'
Trade	0	0	'	'
Notes Receivable, Related Parties, Current	1,328	1,238	'	'
Other Receivables	43,968	17,657	'	'
Inventories	0	0	'	'
Recoverable Income Taxes	40,402	-16,262	'	'
Deferred Income Taxes	127,367	219,566	'	'
Prepaid Expenses	27,524	43,698	'	'
Total Current Assets	375,152	586,370	'	'
Property, Plant and Equipment:	'	'	'	'
Property, Plant and Equipment	166,798	173,719	'	'
Less-Accumulated Depreciation, Depletion and Amortization	118,911	122,022	'	'
Total Property, Plant and Equipment-Net	47,887	51,697	'	'
Other Assets:	'	'	'	'
Notes, Loans and Financing Receivable, Net	'	125	'	'
Other	146,874	145,401	'	'
Total Other Assets	12,225,598	12,110,580	'	'
Total Assets	12,648,637	12,748,647	'	'
Current Liabilities:	'	'	'	'
Accounts Payable	49,144	91,553	'	'
Accounts Payable (Recoverable)- Related Parties	4,406,801	4,629,131	'	'
Short-Term Notes Payable	'	0	'	'
Current Portion Long-Term Debt	1,524	1,029	'	'
Short-Term Notes Payable	0	'	'	'
Other Accrued Liabilities	103,400	144,612	'	'
Liabilities of Disposal Group, Including Discontinued Operation, Current	0	0	'	'
Total Current Liabilities	4,560,869	4,866,325	'	'
Long-Term Debt:	3,104,101	3,005,458	'	'
Deferred Credits and Other Liabilities	'	'	'	'
Deferred Tax Liabilities, Net	'	-232,904	'	'
Deferred Tax Liabilities, Net, Noncurrent	-198,720	'	'	'
Postretirement Benefits Other Than Pensions	0	0	'	'
Pneumoconiosis	0	0	'	'
Mine Closing	0	0	'	'
Gas Well Closing	0	0	'	'
Workers' Compensation	0	0	'	'
Salary Retirement	58,962	48,252	'	'
Reclamation	0	0	'	'
Other	63,767	55,227	'	'
Total Deferred Credits and Other Liabilities	-75,991	-129,425	'	'
Total CONSOL Energy Inc. Stockholders' Equity	5,059,658	5,006,289	'	'
TOTAL LIABILITIES AND EQUITY	12,648,637	12,748,647	'	'
CNX Gas Guarantor [Member]	'	'	'	'
Schedule of Condensed Consolidating Balance Sheets [Line Items]	'	'	'	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	259,870	206,060	'	'
Current Assets:	'	'	'	'
Cash and Cash Equivalents	11,984	6,238	'	'
Accounts and Notes Receivable:	'	'	'	'
Trade	74,285	71,911	'	'
Notes Receivable, Related Parties, Current	0	0	'	'
Other Receivables	300,672	207,128	'	'
Inventories	15,076	15,185	'	'
Recoverable Income Taxes	6,658	26,967	'	'
Deferred Income Taxes	10,349	-8,263	'	'
Prepaid Expenses	31,406	65,701	'	'
Total Current Assets	450,430	384,867	'	'
Property, Plant and Equipment:	'	'	'	'
Property, Plant and Equipment	7,417,046	6,919,972	'	'
Less-Accumulated Depreciation, Depletion and Amortization	1,329,866	1,188,464	'	'
Total Property, Plant and Equipment-Net	6,087,180	5,731,508	'	'
Other Assets:	'	'	'	'
Notes, Loans and Financing Receivable, Net	'	0	'	'
Other	16,685	30,728	'	'
Total Other Assets	276,555	236,788	'	'
Total Assets	6,814,165	6,353,163	'	'
Current Liabilities:	'	'	'	'
Accounts Payable	359,479	324,226	'	'
Accounts Payable (Recoverable)- Related Parties	114,744	23,287	'	'
Short-Term Notes Payable	'	332,487	'	'
Current Portion Long-Term Debt	6,546	6,258	'	'
Short-Term Notes Payable	595,100	'	'	'
Other Accrued Liabilities	120,000	89,080	'	'
Liabilities of Disposal Group, Including Discontinued Operation, Current	0	0	'	'
Total Current Liabilities	1,195,869	775,338	'	'
Long-Term Debt:	40,331	42,852	'	'
Deferred Credits and Other Liabilities	'	'	'	'
Deferred Tax Liabilities, Net	'	475,547	'	'
Deferred Tax Liabilities, Net, Noncurrent	490,648	'	'	'
Postretirement Benefits Other Than Pensions	0	0	'	'
Pneumoconiosis	0	0	'	'
Mine Closing	0	0	'	'
Gas Well Closing	120,508	119,429	'	'
Workers' Compensation	0	0	'	'
Salary Retirement	0	0	'	'
Reclamation	0	0	'	'
Other	61,550	61,190	'	'
Total Deferred Credits and Other Liabilities	672,706	656,166	'	'
Total CONSOL Energy Inc. Stockholders' Equity	4,905,259	4,878,807	'	'
TOTAL LIABILITIES AND EQUITY	6,814,165	6,353,163	'	'
Other Guarantors Subsidiaries [Member]	'	'	'	'
Schedule of Condensed Consolidating Balance Sheets [Line Items]	'	'	'	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	123,405	70,222	'	'
Current Assets:	'	'	'	'
Cash and Cash Equivalents	0	0	'	'
Accounts and Notes Receivable:	'	'	'	'
Trade	0	0	'	'
Notes Receivable, Related Parties, Current	0	24,623	'	'
Other Receivables	41,831	14,969	'	'
Inventories	93,925	99,320	'	'
Recoverable Income Taxes	0	0	'	'
Deferred Income Taxes	0	0	'	'
Prepaid Expenses	17,641	24,915	'	'
Total Current Assets	153,397	163,827	'	'
Property, Plant and Equipment:	'	'	'	'
Property, Plant and Equipment	6,550,916	6,459,014	'	'
Less-Accumulated Depreciation, Depletion and Amortization	2,915,856	2,806,775	'	'
Total Property, Plant and Equipment-Net	3,635,060	3,652,239	'	'
Other Assets:	'	'	'	'
Notes, Loans and Financing Receivable, Net	'	0	'	'
Other	39,512	28,831	'	'
Total Other Assets	162,917	99,053	'	'
Total Assets	3,951,374	3,915,119	'	'
Current Liabilities:	'	'	'	'
Accounts Payable	83,650	89,201	'	'
Accounts Payable (Recoverable)- Related Parties	-5,188,815	-5,121,727	'	'
Short-Term Notes Payable	'	0	'	'
Current Portion Long-Term Debt	3,331	3,372	'	'
Short-Term Notes Payable	0	'	'	'
Other Accrued Liabilities	322,966	322,606	'	'
Liabilities of Disposal Group, Including Discontinued Operation, Current	0	0	'	'
Total Current Liabilities	-4,778,868	-4,706,548	'	'
Long-Term Debt:	113,082	113,474	'	'
Deferred Credits and Other Liabilities	'	'	'	'
Deferred Tax Liabilities, Net	'	0	'	'
Deferred Tax Liabilities, Net, Noncurrent	0	'	'	'
Postretirement Benefits Other Than Pensions	959,034	961,127	'	'
Pneumoconiosis	111,519	111,971	'	'
Mine Closing	320,902	320,723	'	'
Gas Well Closing	59,589	56,174	'	'
Workers' Compensation	73,065	71,136	'	'
Salary Retirement	0	0	'	'
Reclamation	35,779	40,706	'	'
Other	6,998	14,938	'	'
Total Deferred Credits and Other Liabilities	1,566,886	1,576,775	'	'
Total CONSOL Energy Inc. Stockholders' Equity	7,050,274	6,931,418	'	'
TOTAL LIABILITIES AND EQUITY	3,951,374	3,915,119	'	'
Non-Guarantors [Member]	'	'	'	'
Schedule of Condensed Consolidating Balance Sheets [Line Items]	'	'	'	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0	0	'	'
Current Assets:	'	'	'	'
Cash and Cash Equivalents	846	709	'	'
Accounts and Notes Receivable:	'	'	'	'
Trade	201,146	260,663	'	'
Notes Receivable, Related Parties, Current	0	0	'	'
Other Receivables	4,013	4,219	'	'
Inventories	39,004	43,409	'	'
Recoverable Income Taxes	0	0	'	'
Deferred Income Taxes	0	0	'	'
Prepaid Expenses	1,867	1,528	'	'
Total Current Assets	246,876	310,528	'	'
Property, Plant and Equipment:	'	'	'	'
Property, Plant and Equipment	26,207	25,804	'	'
Less-Accumulated Depreciation, Depletion and Amortization	19,576	18,986	'	'
Total Property, Plant and Equipment-Net	6,631	6,818	'	'
Other Assets:	'	'	'	'
Notes, Loans and Financing Receivable, Net	'	0	'	'
Other	8,776	9,053	'	'
Total Other Assets	8,776	9,053	'	'
Total Assets	262,283	326,399	'	'
Current Liabilities:	'	'	'	'
Accounts Payable	11,736	9,600	'	'
Accounts Payable (Recoverable)- Related Parties	72,170	136,822	'	'
Short-Term Notes Payable	'	0	'	'
Current Portion Long-Term Debt	726	796	'	'
Short-Term Notes Payable	0	'	'	'
Other Accrued Liabilities	8,110	9,399	'	'
Liabilities of Disposal Group, Including Discontinued Operation, Current	13,054	28,239	'	'
Total Current Liabilities	105,796	184,856	'	'
Long-Term Debt:	1,867	1,775	'	'
Deferred Credits and Other Liabilities	'	'	'	'
Deferred Tax Liabilities, Net	'	0	'	'
Deferred Tax Liabilities, Net, Noncurrent	0	'	'	'
Postretirement Benefits Other Than Pensions	0	0	'	'
Pneumoconiosis	0	0	'	'
Mine Closing	0	0	'	'
Gas Well Closing	0	0	'	'
Workers' Compensation	341	332	'	'
Salary Retirement	0	0	'	'
Reclamation	0	0	'	'
Other	0	0	'	'
Total Deferred Credits and Other Liabilities	341	332	'	'
Total CONSOL Energy Inc. Stockholders' Equity	154,279	139,436	'	'
TOTAL LIABILITIES AND EQUITY	262,283	326,399	'	'
Consolidation, Eliminations [Member]	'	'	'	'
Schedule of Condensed Consolidating Balance Sheets [Line Items]	'	'	'	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	-12,109,812	-11,949,661	'	'
Current Assets:	'	'	'	'
Cash and Cash Equivalents	0	0	'	'
Accounts and Notes Receivable:	'	'	'	'
Trade	0	0	'	'
Notes Receivable, Related Parties, Current	0	0	'	'
Other Receivables	0	0	'	'
Inventories	0	0	'	'
Recoverable Income Taxes	0	0	'	'
Deferred Income Taxes	0	0	'	'
Prepaid Expenses	0	0	'	'
Total Current Assets	0	0	'	'
Property, Plant and Equipment:	'	'	'	'
Property, Plant and Equipment	0	0	'	'
Less-Accumulated Depreciation, Depletion and Amortization	0	0	'	'
Total Property, Plant and Equipment-Net	0	0	'	'
Other Assets:	'	'	'	'
Notes, Loans and Financing Receivable, Net	'	0	'	'
Other	0	0	'	'
Total Other Assets	-12,109,812	-11,949,661	'	'
Total Assets	-12,109,812	-11,949,661	'	'
Current Liabilities:	'	'	'	'
Accounts Payable	0	0	'	'
Accounts Payable (Recoverable)- Related Parties	595,100	332,487	'	'
Short-Term Notes Payable	'	-332,487	'	'
Current Portion Long-Term Debt	0	0	'	'
Short-Term Notes Payable	-595,100	'	'	'
Other Accrued Liabilities	0	0	'	'
Liabilities of Disposal Group, Including Discontinued Operation, Current	0	0	'	'
Total Current Liabilities	0	0	'	'
Long-Term Debt:	0	0	'	'
Deferred Credits and Other Liabilities	'	'	'	'
Deferred Tax Liabilities, Net	'	0	'	'
Deferred Tax Liabilities, Net, Noncurrent	0	'	'	'
Postretirement Benefits Other Than Pensions	0	0	'	'
Pneumoconiosis	0	0	'	'
Mine Closing	0	0	'	'
Gas Well Closing	0	0	'	'
Workers' Compensation	0	0	'	'
Salary Retirement	0	0	'	'
Reclamation	0	0	'	'
Other	0	0	'	'
Total Deferred Credits and Other Liabilities	0	0	'	'
Total CONSOL Energy Inc. Stockholders' Equity	-12,109,812	-11,949,661	'	'
TOTAL LIABILITIES AND EQUITY	($12,109,812)	($11,949,661)	'	'

Guarantor_Subsidiaries_Condens

Guarantor Subsidiaries, Condensed Statement of Cash Flows (Details) (USD $)	3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]	'	'	'	'
Cash Provided by (Used in) Investing Activities, Discontinued Operations	'	$0	$82,627	'
Net Cash Provided by Operating Activities	'	557,147	393,390	'
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	'	578,019	305,946	'
Investing Activities:	'	'	'	'
Capital Expenditures	'	-819,295	-707,452	'
Net Cash Used in Investing Activities	'	-725,220	-465,126	'
Payments of Dividends	'	-28,733	-28,601	'
Cash Provided by (Used in) Operating Activities, Discontinued Operations	'	-20,872	87,444	'
Financing Activities:	'	'	'	'
Proceeds from Issuance of Common Stock	2,497	13,234	2,497	'
(Payments on) Proceeds from Short-Term Borrowings	'	-11,736	173,000	'
Payments for (Proceeds from) Businesses and Interest in Affiliates	'	-39,000	-16,600	'
Proceeds from Sale of Productive Assets	'	133,075	107,626	'
Net Cash (Used in) Provided by Financing Activities	121,792	-11,954	121,792	'
Tax Benefit from Stock-Based Compensation	2,185	2,413	2,185	'
Repayments of Secured Debt	2,873	'	'	'
Repayments of Other Debt	-29,964	-3,167	-29,964	'
Proceeds from Issuance of Long-term Debt	'	1,600,000	0	'
Proceeds from Long-Term Borrowings	'	-1,583,965	0	'
Proceeds from (Payments for) Other Financing Activities	0	'	'	'
Increase (Decrease) in Restricted Cash	'	0	68,673	'
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	'	-725,220	-547,753	'
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	121,990	-11,954	121,990	'
Cash Provided by (Used in) Financing Activities, Discontinued Operations	-198	0	-198	'
Parent Issuer [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]	'	'	'	'
Cash Provided by (Used in) Investing Activities, Discontinued Operations	'	0	0	'
Net Cash Provided by Operating Activities	'	-159,864	168,661	'
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	'	-159,864	168,661	'
Investing Activities:	'	'	'	'
Capital Expenditures	'	-1,139	-7,511	'
Net Cash Used in Investing Activities	'	-14,766	-140,686	'
Payments of Dividends	'	'	21,399	'
Cash Provided by (Used in) Operating Activities, Discontinued Operations	'	0	0	'
Financing Activities:	'	'	'	'
Proceeds from Issuance of Common Stock	2,497	13,234	'	'
(Payments on) Proceeds from Short-Term Borrowings	'	-11,736	0	'
Payments for (Proceeds from) Businesses and Interest in Affiliates	'	0	0	'
Proceeds from Sale of Productive Assets	'	-13,627	-133,175	'
Net Cash (Used in) Provided by Financing Activities	-199	'	'	'
Tax Benefit from Stock-Based Compensation	2,185	2,413	'	'
Repayments of Secured Debt	0	'	'	'
Repayments of Other Debt	26,280	2,493	'	'
Proceeds from Issuance of Long-term Debt	'	1,600,000	'	'
Proceeds from Long-Term Borrowings	'	1,583,965	'	'
Proceeds from (Payments for) Other Financing Activities	0	'	'	'
Increase (Decrease) in Restricted Cash	'	'	0	'
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	'	-14,766	-140,686	'
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	-199	'	'	'
Cash Provided by (Used in) Financing Activities, Discontinued Operations	0	'	'	'
CNX Gas Guarantor [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]	'	'	'	'
Cash Provided by (Used in) Investing Activities, Discontinued Operations	'	0	0	'
Net Cash Provided by Operating Activities	'	305,113	263,284	'
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	'	305,113	263,284	'
Investing Activities:	'	'	'	'
Capital Expenditures	'	-570,456	-395,593	'
Net Cash Used in Investing Activities	'	-559,024	-412,450	'
Payments of Dividends	'	0	-50,000	'
Cash Provided by (Used in) Operating Activities, Discontinued Operations	'	0	0	'
Financing Activities:	'	'	'	'
Proceeds from Issuance of Common Stock	'	0	0	'
(Payments on) Proceeds from Short-Term Borrowings	'	262,613	224,800	'
Payments for (Proceeds from) Businesses and Interest in Affiliates	'	-41,000	-22,501	'
Proceeds from Sale of Productive Assets	'	52,432	5,644	'
Net Cash (Used in) Provided by Financing Activities	'	259,657	172,665	'
Tax Benefit from Stock-Based Compensation	'	0	0	'
Repayments of Secured Debt	0	'	'	'
Repayments of Other Debt	'	0	0	'
Proceeds from Issuance of Long-term Debt	'	0	'	'
Proceeds from Long-Term Borrowings	'	0	'	'
Proceeds from (Payments for) Other Financing Activities	'	-2,956	-2,135	'
Increase (Decrease) in Restricted Cash	'	'	0	'
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	'	-559,024	-412,450	'
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	'	259,657	172,665	'
Cash Provided by (Used in) Financing Activities, Discontinued Operations	'	0	0	'
Other Guarantors Subsidiaries [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]	'	'	'	'
Cash Provided by (Used in) Investing Activities, Discontinued Operations	'	0	0	'
Net Cash Provided by Operating Activities	'	148,731	-4,205	'
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	'	148,731	-4,205	'
Investing Activities:	'	'	'	'
Capital Expenditures	'	-247,700	-304,348	'
Net Cash Used in Investing Activities	'	-151,435	5,370	'
Payments of Dividends	'	'	0	'
Cash Provided by (Used in) Operating Activities, Discontinued Operations	'	0	0	'
Financing Activities:	'	'	'	'
Proceeds from Issuance of Common Stock	0	0	'	'
(Payments on) Proceeds from Short-Term Borrowings	'	0	0	'
Payments for (Proceeds from) Businesses and Interest in Affiliates	'	2,000	5,901	'
Proceeds from Sale of Productive Assets	'	94,265	235,144	'
Net Cash (Used in) Provided by Financing Activities	-1,222	'	'	'
Tax Benefit from Stock-Based Compensation	0	0	'	'
Repayments of Secured Debt	0	'	'	'
Repayments of Other Debt	3,357	252	'	'
Proceeds from Issuance of Long-term Debt	'	0	'	'
Proceeds from Long-Term Borrowings	'	0	'	'
Proceeds from (Payments for) Other Financing Activities	2,135	'	'	'
Increase (Decrease) in Restricted Cash	'	'	-68,673	'
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	'	-151,435	5,370	'
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	-1,222	'	'	'
Cash Provided by (Used in) Financing Activities, Discontinued Operations	0	'	'	'
Non-Guarantors [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]	'	'	'	'
Cash Provided by (Used in) Investing Activities, Discontinued Operations	'	0	82,627	'
Net Cash Provided by Operating Activities	'	554	-86,150	'
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	'	21,426	-173,594	'
Investing Activities:	'	'	'	'
Capital Expenditures	'	0	0	'
Net Cash Used in Investing Activities	'	5	82,640	'
Payments of Dividends	'	'	0	'
Cash Provided by (Used in) Operating Activities, Discontinued Operations	'	-20,872	87,444	'
Financing Activities:	'	'	'	'
Proceeds from Issuance of Common Stock	0	0	'	'
(Payments on) Proceeds from Short-Term Borrowings	'	0	0	'
Payments for (Proceeds from) Businesses and Interest in Affiliates	'	0	0	'
Proceeds from Sale of Productive Assets	'	5	13	'
Net Cash (Used in) Provided by Financing Activities	2,348	'	'	'
Tax Benefit from Stock-Based Compensation	0	0	'	'
Repayments of Secured Debt	2,873	'	'	'
Repayments of Other Debt	327	422	'	'
Proceeds from Issuance of Long-term Debt	'	0	'	'
Proceeds from Long-Term Borrowings	'	0	'	'
Proceeds from (Payments for) Other Financing Activities	0	'	'	'
Increase (Decrease) in Restricted Cash	'	'	0	'
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	'	5	13	'
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	2,546	'	'	'
Cash Provided by (Used in) Financing Activities, Discontinued Operations	-198	'	'	'
Consolidation, Eliminations [Member]	'	'	'	'
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]	'	'	'	'
Cash Provided by (Used in) Investing Activities, Discontinued Operations	'	0	0	'
Net Cash Provided by Operating Activities	'	262,613	51,800	'
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	'	262,613	51,800	'
Investing Activities:	'	'	'	'
Capital Expenditures	'	0	0	'
Net Cash Used in Investing Activities	'	0	'	0
Payments of Dividends	'	'	0	'
Cash Provided by (Used in) Operating Activities, Discontinued Operations	'	0	0	'
Financing Activities:	'	'	'	'
Proceeds from Issuance of Common Stock	0	0	'	'
(Payments on) Proceeds from Short-Term Borrowings	'	-262,613	-51,800	'
Payments for (Proceeds from) Businesses and Interest in Affiliates	'	0	0	'
Proceeds from Sale of Productive Assets	'	0	0	'
Net Cash (Used in) Provided by Financing Activities	-51,800	'	'	'
Tax Benefit from Stock-Based Compensation	0	0	'	'
Repayments of Secured Debt	0	'	'	'
Repayments of Other Debt	0	0	'	'
Proceeds from Issuance of Long-term Debt	'	0	'	'
Proceeds from Long-Term Borrowings	'	0	'	'
Proceeds from (Payments for) Other Financing Activities	0	'	'	'
Increase (Decrease) in Restricted Cash	'	'	0	'
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	'	0	0	'
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	-51,800	'	'	'
Cash Provided by (Used in) Financing Activities, Discontinued Operations	$0	'	'	'

Guarantor_Subsidiaries_Financi2

Guarantor Subsidiaries Financial Information Gurantor Subsidiaries Statement of Comprehensive Income (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	($24,935)	($12,813)	$91,069	($14,634)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	-3,798	42,904	1,321	88,661
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	12,218	-45,749	59,183	-27,154
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	-6,951	9,528	-23,264	32,241
Other Comprehensive Income (Loss), Net of Tax	9,065	-79,125	34,598	-83,574
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	-34,000	66,312	56,471	68,940
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	0	-287	0	-544
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	-34,000	66,599	56,471	69,484
Parent Issuer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-24,935	-12,526	91,069	-14,090
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	3,798	-42,904	-1,321	-88,661
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	-12,218	45,749	-59,183	27,154
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	6,951	-9,528	23,264	-32,241
Other Comprehensive Income (Loss), Net of Tax	-9,065	79,125	-34,598	83,574
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	'	66,599	'	69,484
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	'	0	'	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	-34,000	66,599	56,471	69,484
CNX Gas Guarantor [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	15,501	-2,749	62,372	-3,074
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	0	0	0	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	-12,218	45,749	-59,183	27,154
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	6,951	-9,528	23,264	-32,241
Other Comprehensive Income (Loss), Net of Tax	-5,267	36,221	-35,919	-5,087
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	'	33,472	'	-8,161
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	'	-287	'	-544
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	10,234	33,759	26,453	-7,617
Other Guarantors Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	72,562	240,781	200,156	340,822
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	3,798	-42,904	-1,321	-88,661
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	0	0	0	0
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax	-3,798	42,904	1,321	88,661
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	'	283,685	'	429,483
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	'	0	'	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	68,764	283,685	201,477	429,483
Non-Guarantors [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,498	-13,805	-3,008	-9,674
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	0	0	0	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	0	0	0	0
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	'	-13,805	'	-9,674
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	'	0	'	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	1,498	-13,805	-3,008	-9,674
Consolidation, Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-89,561	-224,514	-259,520	-328,618
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	-3,798	42,904	1,321	88,661
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	12,218	-45,749	59,183	-27,154
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	-6,951	9,528	-23,264	32,241
Other Comprehensive Income (Loss), Net of Tax	9,065	-79,125	34,598	-83,574
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	'	-303,639	'	-412,192
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	'	0	'	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	($80,496)	($303,639)	($224,922)	($412,192)

Related_Party_Transaction_Deta

Related Party Transaction (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Related Party Transaction [Line Items]	'	'	'	'	'
Equity Method Investment, Ownership Percentage	50.00%	'	50.00%	'	'
CONE [Member]	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'
Due from Related Parties	$4,267	'	$4,267	'	$5,448
Related Party Transaction, Expenses from Transactions with Related Party	14,382	6,301	26,207	14,781	'
CONE [Member] | Reimbursement for CONE Expenses [Member]	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'
Due from Related Parties	-478	'	-478	'	-2,168
CONE [Member] | Reimbursement for Services Provided to Cone [Member]	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'
Due from Related Parties	-83	'	-83	'	-265
CONE [Member] | CONE Capital Reimbursement [Member]	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'
Due from Related Parties	-283	'	-283	'	0
CONE [Member] | CONE Gathering Fees [Member]	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'
Due to Related Parties, Current	$5,111	'	$5,111	'	$7,881