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| | <Log type="Info"> Element us-gaap_RevisionsOfPreviousQuantityEstimates had a mix of decimals attribute values: -6 -3. </Log> |
| | <Log type="Info"> Element us-gaap_SaleLeasebackTransactionGrossProceeds had a mix of decimals attribute values: -3 0. </Log> |
| | <Log type="Info"> Element us-gaap_SignificantAcquisitionsAndDisposalsGainLossOnSaleOrDisposalPretax had a mix of decimals attribute values: -3 0. </Log> |
| | <Log type="Info"> Element us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation had a mix of decimals attribute values: -3 0. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '1004000 - Statement - Consolidated Statements of Stockholders' Equity' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2406402 - Disclosure - Acquisitions (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2406403 - Disclosure - Dispositions (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2410404 - Disclosure - Income Taxes Income Tax Reconciliation (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2417402 - Disclosure - Long-Term Debt (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2419402 - Disclosure - Pension and OPEB Pension and OPEB Liability Disclosures (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2420402 - Disclosure - CWP and Workers Comp (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2424402 - Disclosure - Supplemental Cash Flow Supplemental Cash Flow (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2426402 - Disclosure - Financial Instruments Measured at Fair Value on a Recurring Basis (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2426403 - Disclosure - Carrying Amounts and Fair Values of Financial Instruments for Which the Fair Value Option Was Not Elected (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2429403 - Disclosure - Reconciliation of Segment Information, Revenue and Other Income (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2429404 - Disclosure - Reconciliation of Segment Information, Total Assets (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2430403 - Disclosure - Guarantor Subsidiaries Income Statement (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2430404 - Disclosure - Guarantor Subsidiaries Balance Sheet (Detail)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '2430405 - Disclosure - Guarantor Subsidiaries, Condensed Statement of Cash Flows (Detail)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> Process Flow-Through: 1001000 - Statement - Consolidated Statements of Income </Log> |
| | <Log type="Info"> Process Flow-Through: 1002500 - Statement - Consolidated Statement of Comprehensive Income </Log> |
| | <Log type="Info"> Process Flow-Through: 1002501 - Statement - Consolidated Statement of Comprehensive Income Parentheticals </Log> |
| | <Log type="Info"> Process Flow-Through: 1003000 - Statement - Consolidated Balance Sheets </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Jan. 02, 2012' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Jan. 02, 2011' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Dec. 31, 2010' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Jan. 02, 2010' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Dec. 31, 2009' </Log> |
| | <Log type="Info"> Process Flow-Through: 1003501 - Statement - Consolidated Balance Sheets Parentheticals </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Dec. 31, 2010' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Dec. 31, 2009' </Log> |
| | <Log type="Info"> Process Flow-Through: 1004501 - Statement - Consolidated Statements of Stockholders' Equity Parentheticals </Log> |
| | <Log type="Info"> Process Flow-Through: 1005000 - Statement - Consolidated Statements of Cash Flows </Log> |
| | </Logs> |
| <InputFiles> |
| | <File> cnx-20121231.xml </File> |
| | <File> cnx-20121231.xsd </File> |
| | <File> cnx-20121231_cal.xml </File> |
| | <File> cnx-20121231_def.xml </File> |
| | <File> cnx-20121231_lab.xml </File> |
| | <File> cnx-20121231_pre.xml </File> |
| | </InputFiles> |
| <SupplementalFiles/> |
| <BaseTaxonomies/> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |