Subsequent Event (Details) (USD $)	1 Months Ended
	Oct. 25, 2013 T
Subsequent Events [Abstract]
Subsequent Event, Date	Oct. 25, 2013
Subsequent Event, Description	CONSOL Energy entered into an agreement to sell Consolidation Coal Company (CCC) and certain of its subsidiaries, which contains all five of its longwall coal mines in West Virginia, to a subsidiary of Murray Energy Corporation (Murray Energy).  The CCC mines being sold are McElroy Mine, Shoemaker Mine, Robinson Run Mine, Loveridge Mine, and Blacksville No. 2 Mine.
Tons Produced in 2012	28,500
reserves sold	1,100
Towboats Sold	$ 21,000
Barges Sold	600,000
2012 TONS TRANSPORTED BY RIVER DIVISION	19,300
Cash Received	850,000
Book Value of Liabilites Assumed	$ 2,400,000.00