XML 86 R45.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Mine Closing, Reclamation, and Gas Well Closing (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2014
MINE CLOSING, RECLAMATION & GAS WELL CLOSING [Abstract] |
Schedule of Change in Asset Retirement Obligation [Table Text Block] |
|  | As of December 31,
|  | 2014 |  | 2013
Balance at beginning of period |  | $ | 600,875 |  |  | $ | 539,177 |
Accretion expense |  | 42,608 |  |  | 41,909 |
Payments |  | (52,339 | ) |  | (38,198 | )
Revisions in estimated cash flows |  | (2,069 | ) |  | 42,558 |
Other |  | (13,546 | ) |  | 15,429 |
Balance at end of period |  | $ | 575,529 |  |  | $ | 600,875 |

X
- Details
Name: | cnx_MineClosingReclamationGasWellClosingAbstract
Namespace Prefix: | cnx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
Name: | us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration