Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Sales-Outside	$ 3,015,551	$ 3,122,550	$ 3,991,007
Sales-Gas Royalty Interests	63,202	49,405	66,929
Sales-Purchased Gas	6,531	3,316	4,344
Freight-Outside	35,438	107,079	175,633
Other Income	178,963	395,176	139,132
Total Revenue and Other Income	3,299,685	3,677,526	4,377,045
Cost of Goods Sold and Other Operating Charges (exclusive of depreciation, depletion and amortization shown below)	2,228,952	2,221,859	2,266,560
Gas Royalty Interests Costs	53,028	38,867	59,331
Purchased Gas Costs	4,837	2,711	3,831
Freight Expense	35,438	107,079	175,444
Selling, General and Administrative Expenses	90,408	90,740	114,643
Depreciation, Depletion and Amortization	461,122	427,115	430,577
Interest Expense	219,198	220,042	248,344
Taxes Other Than Income	160,627	162,426	174,392
Gains (Losses) on Extinguishment of Debt	0	0	16,090
Acquisition and Financing Fees	0	0	14,907
Total Costs	3,253,610	3,270,839	3,504,119
Earnings Before Income Taxes	46,075	406,687	872,926
Income Taxes	(33,189)	88,728	191,251
Income (Loss) from Continuing Operations Attributable to Parent	79,264	317,959	681,675
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	579,792	70,114	(49,178)
Net Income (Loss)	659,056	388,073	632,497
Less: Net Loss (Income) Attributable to Noncontrolling Interest	1,386	397	0
Net Income Attributable to CONSOL Energy Inc Shareholders	$ 660,442	$ 388,470	$ 632,497
Earnings per share:
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.35	$ 1.40	$ 3.01
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	$ 2.54	$ 0.31	$ (0.22)
Basic	$ 2.89	$ 1.71	$ 2.79
Income (Loss) from Continuing Operations, Per Diluted Share	$ 0.35	$ 1.39	$ 2.98
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	$ 2.52	$ 0.31	$ (0.22)
Dilutive	$ 2.87	$ 1.70	$ 2.76
Weighted Average Number of Common Shares Outstanding:
Weighted Average Number of Shares Outstanding, Basic	228,728,628	227,593,524	226,680,369
Dilutive	230,077,942	229,141,767	229,003,599
Dividends Paid Per Share	$ 0.375	$ 0.625	$ 0.425