$CNX
CNX Resources Corp Stock $cnx

$cnx Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000107041213000011 Filed on February 07, 2013

Income Statement

Concept	2012 Q4	2012	2011 Q4
Revenue	$808.2M	$3.678B	$1.383B
YoY Change	-41.58%	-15.98%	5.79%
Cost Of Revenue	-$374.2M	$2.001B	$969.9M
YoY Change	-138.58%	-23.16%	11.32%
Gross Profit	-$91.60M	$1.281B	$488.8M
YoY Change	-118.74%	-21.57%	4.96%
Gross Profit Margin	-11.33%	34.83%	35.33%
Selling, General & Admin	-$112.8M	$90.74M	$124.5M
YoY Change	-190.6%	-20.85%	-1.89%
% of Gross Profit		7.08%	25.47%
Research & Development		$39.00M
YoY Change
% of Gross Profit		3.04%
Depreciation & Amortization	-$35.90M	$427.1M	-$36.00M
YoY Change	-0.28%	-0.8%	-123.33%
% of Gross Profit		33.34%	-7.36%
Operating Expenses	-$148.7M	$1.458B	$276.3M
YoY Change	-153.82%	1171.7%	-1.74%
Operating Profit	$57.10M	-$176.9M	$212.5M
YoY Change	-73.13%	-111.65%	15.18%
Interest Expense	-$51.30M	$220.0M	-$58.40M
YoY Change	-12.16%	-11.4%	-10.7%
% of Operating Profit	-89.84%		-27.48%
Other Income/Expense, Net	$102.0M	$81.03M	$83.60M
YoY Change	22.01%	172.37%	309.8%
Pretax Income	$107.8M	$406.7M	$237.7M
YoY Change	-54.65%	-53.41%	71.62%
Income Tax	$28.30M	$88.73M	$42.00M
% Of Pretax Income	26.25%	21.82%	17.67%
Net Earnings	$149.9M	$388.5M	$195.6M
YoY Change	-23.38%	-38.58%	87.28%
Net Earnings / Revenue	18.55%	10.56%	14.14%
Basic Earnings Per Share	$0.66	$1.71	$0.86
Diluted Earnings Per Share	$0.65	$1.70	$0.85
COMMON SHARES
Basic Shares Outstanding	227.9M shares	227.6M shares	227.0M shares
Diluted Shares Outstanding	229.9M shares	229.1M shares	229.3M shares

Balance Sheet

Concept	2012 Q4	2012	2011 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$22.00M	$22.00M	$376.0M
YoY Change	-94.15%	-94.15%	1039.39%
Cash & Equivalents	$21.86M	$22.00M	$375.7M
Short-Term Investments
Other Short-Term Assets	$430.0M	$430.0M	$380.0M
YoY Change	13.16%	13.16%	19.87%
Inventory	$170.8M	$171.0M	$258.3M
Prepaid Expenses	$148.4M		$239.4M
Receivables	$428.3M	$466.0M	$462.8M
Other Receivables	$131.1M	$450.0M	$105.7M
Total Short-Term Assets	$1.539B	$1.539B	$1.898B
YoY Change	-18.91%	-18.91%	70.22%
LONG-TERM ASSETS
Property, Plant & Equipment	$10.19B	$10.19B	$9.326B
YoY Change	9.27%	9.28%	-7.93%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$222.8M	$223.0M	$182.0M
YoY Change	22.41%	22.53%	94.67%
Other Assets	$216.2M	$1.019B	$288.9M
YoY Change	-25.15%	24.42%	30.82%
Total Long-Term Assets	$11.46B	$11.46B	$10.63B
YoY Change	7.82%	7.82%	-2.99%
TOTAL ASSETS
Total Short-Term Assets	$1.539B	$1.539B	$1.898B
Total Long-Term Assets	$11.46B	$11.46B	$10.63B
Total Assets	$13.00B	$13.00B	$12.53B
YoY Change	3.77%	3.77%	3.77%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$498.5M	$499.0M	$522.0M
YoY Change	-4.5%	-4.41%	47.45%
Accrued Expenses	$546.0M	$168.0M	$770.1M
YoY Change	-29.1%	-78.18%	-3.98%
Deferred Revenue
YoY Change
Short-Term Debt	$63.00M	$63.00M	$0.00
YoY Change			-100.0%
Long-Term Debt Due	-$4.126M	$155.0M	-$11.76M
YoY Change	-64.91%	638.1%	0.0%
Total Short-Term Liabilities	$1.387B	$1.387B	$1.388B
YoY Change	-0.09%	-0.07%	-16.6%
LONG-TERM LIABILITIES
Long-Term Debt	$3.124B	$3.173B	$3.122B
YoY Change	0.04%	-0.13%	0.0%
Other Long-Term Liabilities	$118.3M	$4.157B	$124.9M
YoY Change	-5.31%	-4.41%	-13.6%
Total Long-Term Liabilities	$3.242B	$7.330B	$3.247B
YoY Change	-0.16%	-2.6%	-0.6%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.387B	$1.387B	$1.388B
Total Long-Term Liabilities	$3.242B	$7.330B	$3.247B
Total Liabilities	$9.044B	$9.044B	$8.915B
YoY Change	1.45%	1.45%	-2.41%
SHAREHOLDERS EQUITY
Retained Earnings	$2.403B		$2.185B
YoY Change	9.97%		30.0%
Common Stock	$2.284M		$2.273M
YoY Change	0.48%		0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$609.0K		$9.346M
YoY Change	-93.48%		-78.09%
Treasury Stock Shares
Shareholders Equity	$3.954B	$3.954B	$3.611B
YoY Change
Total Liabilities & Shareholders Equity	$13.00B	$13.00B	$12.53B
YoY Change	3.77%	3.77%	3.77%

Cashflow Statement

Concept	2012 Q4	2012	2011 Q4
OPERATING ACTIVITIES
Net Income	$149.9M	$388.5M	$195.6M
YoY Change	-23.38%	-38.58%	87.28%
Depreciation, Depletion And Amortization	-$35.90M	$427.1M	-$36.00M
YoY Change	-0.28%	-0.8%	-123.33%
Cash From Operating Activities	$197.9M	$728.1M	$275.2M
YoY Change	-28.09%	-52.34%	9.03%
INVESTING ACTIVITIES
Capital Expenditures	-$93.50M	$1.245B	-$180.9M
YoY Change	-48.31%	5.7%	-45.53%
Acquisitions		$0.00
YoY Change
Other Investing Activities	-$320.1M	$48.29M	-$166.3M
YoY Change	92.48%	-93.54%	-483.18%
Cash From Investing Activities	-$413.6M	-$1.000B	-$347.2M
YoY Change	19.12%	72.92%	20.26%
FINANCING ACTIVITIES
Cash Dividend Paid		$142.3M
YoY Change		47.66%
Common Stock Issuance & Retirement, Net		$8.278M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	6.600M	-$81.58M	-24.70M
YoY Change	-126.72%	-86.54%	-146.25%
NET CHANGE
Cash From Operating Activities	197.9M	$728.1M	275.2M
Cash From Investing Activities	-413.6M	-$1.000B	-347.2M
Cash From Financing Activities	6.600M	-$81.58M	-24.70M
Net Change In Cash	-209.1M	-$353.9M	-96.70M
YoY Change	116.24%	-203.19%	-665.5%
FREE CASH FLOW
Cash From Operating Activities	$197.9M	$728.1M	$275.2M
Capital Expenditures	-$93.50M	$1.245B	-$180.9M
Free Cash Flow	$291.4M	-$517.4M	$456.1M
YoY Change	-36.11%	-248.15%	-21.97%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	507982000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	522003000	USD
CY2012Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	0	USD
CY2011Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	0	USD
CY2012Q4	us-gaap	Accounts Receivable From Securitization AccountsReceivableFromSecuritization	37846000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	462812000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	428328000	USD
CY2011	us-gaap	Accretion Expense AccretionExpense	48120000	USD
CY2012	us-gaap	Accretion Expense AccretionExpense	49332000	USD
CY2010	us-gaap	Accretion Of Discount AccretionOfDiscount	-154406000	USD
CY2011	us-gaap	Accretion Of Discount AccretionOfDiscount	56698000	USD
CY2012	us-gaap	Accretion Of Discount AccretionOfDiscount	-39203000	USD
CY2011Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	50869000	USD
CY2012Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	36172000	USD
CY2012Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	28744000	USD
CY2011Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	37947000	USD
CY2012Q4	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	34219000	USD
CY2011Q4	us-gaap	Accrued Income Taxes AccruedIncomeTaxes	75633000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	34219000	USD
CY2011Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	75633000	USD
CY2011Q4	us-gaap	Accrued Reclamation Costs Current AccruedReclamationCostsCurrent	20180000	USD
CY2012Q4	us-gaap	Accrued Reclamation Costs Current AccruedReclamationCostsCurrent	20582000	USD
CY2011Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	65775000	USD
CY2012Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	64000000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5354237000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	4760903000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-801554000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-747342000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2296908000	USD
CY2011Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2234775000	USD
CY2010	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	4624236000	USD
CY2012	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	1575230000	USD
CY2011	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	1382371000	USD
CY2012	us-gaap	Adjustment For Amortization AdjustmentForAmortization	4658000	USD
CY2010	us-gaap	Adjustment For Amortization AdjustmentForAmortization	4160000	USD
CY2011	us-gaap	Adjustment For Amortization AdjustmentForAmortization	7608000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	47838000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	48842000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	47593000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	6028000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	7329000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	15100000	USD
CY2011Q4	us-gaap	Advances For Gas Exploration Development And Production Amount AdvancesForGasExplorationDevelopmentAndProductionAmount	4065000	USD
CY2012Q4	us-gaap	Advances For Gas Exploration Development And Production Amount AdvancesForGasExplorationDevelopmentAndProductionAmount	8229000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	43879	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	46076	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	45550	USD
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3368376	shares
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	815793	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1156018	shares
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	650073000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	670856000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	699012000	USD
CY2011	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	-57584000	USD
CY2012	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	-40242000	USD
CY2012	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	43988000	USD
CY2011	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-4621000	USD
CY2011Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	124051000	USD
CY2012Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	148928000	USD
CY2012Q4	us-gaap	Assets Assets	12670909000	USD
CY2011Q4	us-gaap	Assets Assets	12525700000	USD
CY2010Q4	us-gaap	Assets Assets	12070610000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	1539094000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	1897977000	USD
CY2010	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	65363000	USD
CY2011	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	14907000	USD
CY2012	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2011Q4	us-gaap	Capitalized Costs Wells And Related Equipment And Facilities CapitalizedCostsWellsAndRelatedEquipmentAndFacilities	1755617000	USD
CY2012Q4	us-gaap	Capitalized Costs Wells And Related Equipment And Facilities CapitalizedCostsWellsAndRelatedEquipmentAndFacilities	2113414000	USD
CY2012Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	17392000	USD
CY2011Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	95995000	USD
CY2012Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	98186000	USD
CY2012Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	8941000	USD
CY2011Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	55189000	USD
CY2012Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	50113000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	77214000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	12836000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	7542000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	7845000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	9448000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	11134000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	28409000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	18160000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	59054000	USD
CY2011Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	39854000	USD
CY2012Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	47884000	USD
CY2012Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	-953873000	USD
CY2011Q4	us-gaap	Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities	-773027000	USD
CY2011Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	5473338000	USD
CY2012Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Gross CapitalizedCostsOilAndGasProducingActivitiesGross	5936513000	USD
CY2011Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	4700311000	USD
CY2012Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	4982640000	USD
CY2011Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	1495772000	USD
CY2012Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	1549773000	USD
CY2012Q4	us-gaap	Capitalized Costs Support Equipment And Facilities CapitalizedCostsSupportEquipmentAndFacilities	1006882000	USD
CY2011Q4	us-gaap	Capitalized Costs Support Equipment And Facilities CapitalizedCostsSupportEquipmentAndFacilities	963494000	USD
CY2011Q4	us-gaap	Capitalized Costs Unproved Properties CapitalizedCostsUnprovedProperties	1258455000	USD
CY2012Q4	us-gaap	Capitalized Costs Unproved Properties CapitalizedCostsUnprovedProperties	1266444000	USD
CY2012Q4	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Greater Than One Year CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear	7000	USD
CY2012Q4	us-gaap	Capitalized Exploratory Well Costs That Have Been Capitalized For Period Of One Year Or Less CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodOfOneYearOrLess	11736000	USD
CY2012Q4	us-gaap	Capitalized Exploratory Well Costs Thereafter CapitalizedExploratoryWellCostsThereafter	5649000	USD
CY2012	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	141936000	USD
CY2010	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	125715000	USD
CY2011	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	231536000	USD
CY2012Q2	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	49472000	USD
CY2012Q3	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	27430000	USD
CY2012Q1	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	49293000	USD
CY2012Q4	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	15741000	USD
CY2011Q4	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	75225000	USD
CY2011Q3	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	59871000	USD
CY2011Q2	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	59572000	USD
CY2011Q1	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	36868000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	375736000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	21878000	USD
CY2010Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	65607000	USD
CY2011Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	32794000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	32794000	USD
CY2012Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	375736000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	342942000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-353858000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-32813000	USD
CY2011	us-gaap	Cash Flow Hedge Gain Loss Reclassified To Earnings Net CashFlowHedgeGainLossReclassifiedToEarningsNet	-95007000	USD
CY2012	us-gaap	Cash Flow Hedge Gain Loss Reclassified To Earnings Net CashFlowHedgeGainLossReclassifiedToEarningsNet	-189259000	USD
CY2010	us-gaap	Cash Flow Hedge Gain Loss Reclassified To Earnings Net CashFlowHedgeGainLossReclassifiedToEarningsNet	-166276000	USD
CY2012	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.625
CY2011	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.425
CY2010	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.400
CY2010Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	226162133	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	228094712	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	227056212	shares
CY2009Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	181086267	shares
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	2284000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	2273000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	442682000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	705281000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	112947000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-397000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	17102000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	705281000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	130049000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	442285000	USD
CY2012	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	2711000	USD
CY2011	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	3831000	USD
CY2010	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	9736000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	5329289000	USD
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	4933033000	USD
CY2010	us-gaap	Costs And Expenses CostsAndExpenses	4768108000	USD
CY2010	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	1476470000	USD
CY2012	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	50005000	USD
CY2011	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	6673000	USD
CY2012	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	28634000	USD
CY2010	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	1922334000	USD
CY2011	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	58731000	USD
CY2010	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	472691000	USD
CY2012	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	339608000	USD
CY2011	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	463401000	USD
CY2010	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	58655000	USD
CY2012	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	130312000	USD
CY2011	us-gaap	Costs Incurred Exploration Costs CostsIncurredExplorationCosts	131419000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	173912000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	75579000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	82031000	USD
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	0	USD
CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-3425000	USD
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	31594000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	115850000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	92258000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	208467000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	8677000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	34555000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	13652000	USD
CY2012Q4	us-gaap	Debt Current DebtCurrent	13485000	USD
CY2011Q4	us-gaap	Debt Current DebtCurrent	20691000	USD
CY2012Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3140709000	USD
CY2011Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	0	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	1542	USD
CY2011	us-gaap	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	-559132000	USD
CY2012	us-gaap	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	0	USD
CY2010	us-gaap	Decrease Due To Sales Of Minerals In Place DecreaseDueToSalesOfMineralsInPlace	500376000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	8463000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-6717000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-35487000	USD
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2010	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2012	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1765000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6649000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-53011000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	17029000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	8566000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-17524000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1697000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1889598	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1814462	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	648807	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	592689	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1773326	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1848582	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	141083000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	148104000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	507724000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	444585000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	57669	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	59797	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	136211	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	149435	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	54609	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	54998	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	83077	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	103146	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Deferred Rent DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent	24763	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Deferred Rent DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent	23103	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	-41136	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	-41016	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance Noncurrent DeferredTaxAssetsValuationAllowanceNoncurrent	-41136000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance Noncurrent DeferredTaxAssetsValuationAllowanceNoncurrent	-41016000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	-1180637	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	-1199775	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Other Capitalized Costs DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts	-33950	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Other Capitalized Costs DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts	-31284	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	-51006	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	-98539	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	-23717	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	-11435	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	-1084246	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	-1046235	USD
CY2011Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	5713000	USD
CY2012Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	6938000	USD
CY2011Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	269069000	USD
CY2012Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	218004000	USD
CY2011	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0451
CY2012Q1	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0457
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	618397000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	622780000	USD
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	567663000	USD
CY2012	us-gaap	Derivatives Reporting Of Derivative Activity DerivativesReportingOfDerivativeActivity	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:6px;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">CONSOL Energy enters into financial derivative instruments to manage our exposure to commodity price volatility. We measure each derivative instrument at fair value and record it on the balance sheet as either an asset or liability. The fair value of CONSOL Energy's derivatives (natural gas price swaps) are based on intra-bank 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 fair value of the derivative are reported in Other Comprehensive Income or Loss (OCI) and reclassified into earnings 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.</font></div><div style="line-height:120%;padding-top:12px;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">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.</font></div></div>
CY2010	us-gaap	Direct Operating Cost Royalty Expense DirectOperatingCostRoyaltyExpense	53775000	USD
CY2011	us-gaap	Direct Operating Cost Royalty Expense DirectOperatingCostRoyaltyExpense	59331000	USD
CY2012	us-gaap	Direct Operating Cost Royalty Expense DirectOperatingCostRoyaltyExpense	38867000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	-2055834000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	-3130318000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	-3812724000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	14804398000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	16723795000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	11777550000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts	-2720243000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts	-2450589000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Development Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts	-1674829000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	-2989435000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	-1711251000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	-3354444000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	4877499000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	2792040000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	5473545000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts	-5175563000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts	-4823670000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts	-5262635000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	1747181000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	736206000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	1660821000	USD
CY2011	us-gaap	Dividends Cash DividendsCash	-96356000	USD
CY2010	us-gaap	Dividends Cash DividendsCash	-85861000	USD
CY2012	us-gaap	Dividends Cash DividendsCash	-142278000	USD
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.79
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.71
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.61
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.66
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.05
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.67
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.86
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.74
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.70
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.76
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.60
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.67
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.65
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.05
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.85
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	222830000	USD
CY2011Q4	us-gaap	Equity Method Investments EquityMethodInvestments	182036000	USD
CY2012Q4	us-gaap	Excess Of Replacement Or Current Costs Over Stated Lifo Value ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue	19700000	USD
CY2011Q4	us-gaap	Excess Of Replacement Or Current Costs Over Stated Lifo Value ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue	22406000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	15365000	USD
CY2012	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	14645000	USD
CY2011	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	324755000	USD
CY2010	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	326584000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	8678000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	8281000	USD
CY2012	us-gaap	Exploration Abandonment And Impairment Expense ExplorationAbandonmentAndImpairmentExpense	3320000	USD
CY2011	us-gaap	Exploration Abandonment And Impairment Expense ExplorationAbandonmentAndImpairmentExpense	5108000	USD
CY2010	us-gaap	Exploration Abandonment And Impairment Expense ExplorationAbandonmentAndImpairmentExpense	9614000	USD
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.220
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.197
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.029
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.000
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.028
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.020
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.012
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.004
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.002
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.151
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.116
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.145
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.008
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.005
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.012
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.003
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.010
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.009
CY2010	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.018
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	-0.007
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	0
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	-0.002
CY2012Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	33828	USD
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	17473	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	17325	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	16499	USD
CY2011Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	105378000	USD
CY2012Q4	us-gaap	Energy Related Inventory Coal EnergyRelatedInventoryCoal	78825000	USD
CY2011	us-gaap	Freight Costs FreightCosts	231347000	USD
CY2012	us-gaap	Freight Costs FreightCosts	141936000	USD
CY2010	us-gaap	Freight Costs FreightCosts	125544000	USD
CY2012Q1	us-gaap	Freight Costs FreightCosts	49293000	USD
CY2012Q3	us-gaap	Freight Costs FreightCosts	27430000	USD
CY2012Q4	us-gaap	Freight Costs FreightCosts	15741000	USD
CY2012Q2	us-gaap	Freight Costs FreightCosts	49472000	USD
CY2011Q2	us-gaap	Freight Costs FreightCosts	59572000	USD
CY2011Q4	us-gaap	Freight Costs FreightCosts	75225000	USD
CY2011Q1	us-gaap	Freight Costs FreightCosts	36679000	USD
CY2011Q3	us-gaap	Freight Costs FreightCosts	59871000	USD
CY2012	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-282235000	USD
CY2010	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-9908000	USD
CY2011	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-46497000	USD
CY2010	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	9908000	USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	46497000	USD
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	282235000	USD
CY2010	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2011	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-16090000	USD
CY2012	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2012Q4	us-gaap	Gas And Oil Area Developed Gross GasAndOilAreaDevelopedGross	555160000	acre
CY2012Q4	us-gaap	Gas And Oil Area Developed Net GasAndOilAreaDevelopedNet	465392000	acre
CY2012Q4	us-gaap	Gas And Oil Area Undeveloped Gross GasAndOilAreaUndevelopedGross	118384000	acre
CY2012Q4	us-gaap	Gas And Oil Area Undeveloped Net GasAndOilAreaUndevelopedNet	83574000	acre
CY2012Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	1092861000	USD
CY2010	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2011	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	115817000	USD
CY2012	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	787953000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	467913000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	497274000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.33
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	27048000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	21428000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	24663000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	109287000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	155456000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	109201000	USD
CY2010	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	109287000	USD
CY2012	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	109201000	USD
CY2011	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	155456000	USD
CY2012	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2010	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-22618000	USD
CY2012	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	-10267000	USD
CY2011	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	-22209000	USD
CY2010	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	-5633000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	163770000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	174047000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	275784000	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-70812000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-72028000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-91470000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	6642000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4014000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4413000	USD
CY2011	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	2257000	USD
CY2012	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	6004000	USD
CY2010	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	4609000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4479000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	12022000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	14197000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	-3424000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	1765000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	-1822000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	0	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-5188000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-925000	USD
CY2010	us-gaap	Income Taxes Paid IncomeTaxesPaid	118550000	USD
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	121245000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	144405000	USD
CY2010	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-96245000	USD
CY2012	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-20218000	USD
CY2011	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-83770000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	144652000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-20106000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	78839000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable From Securitization IncreaseDecreaseInAccountsReceivableFromSecuritization	150000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable From Securitization IncreaseDecreaseInAccountsReceivableFromSecuritization	37846000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable From Securitization IncreaseDecreaseInAccountsReceivableFromSecuritization	-200000000	USD
CY2010	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-426870000	USD
CY2011	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	155619000	USD
CY2012	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-153104000	USD
CY2012	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	619045000	USD
CY2011	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	130746000	USD
CY2010	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-612114000	USD
CY2010	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	48919000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-380000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	10569000	USD
CY2012	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	1917000	USD
CY2010	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-15443000	USD
CY2011	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	30309000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-7041000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	17745000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	7237000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	36014000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	15393000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	20130000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	84146000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	129230000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-12634000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	8095000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	4431000	USD
CY2010	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-20974000	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	0	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	48294000	USD
CY2010	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	0	USD
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2117243	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1548243	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2323230	shares
CY2010	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	-13393000	USD
CY2011	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	-15547000	USD
CY2012	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	-38054000	USD
CY2011	us-gaap	Interest Expense InterestExpense	248344000	USD
CY2012	us-gaap	Interest Expense InterestExpense	220060000	USD
CY2010	us-gaap	Interest Expense InterestExpense	205032000	USD
CY2012	us-gaap	Interest Expense Debt InterestExpenseDebt	256800000	USD
CY2010	us-gaap	Interest Expense Debt InterestExpenseDebt	213832000	USD
CY2011	us-gaap	Interest Expense Debt InterestExpenseDebt	264080000	USD
CY2010	us-gaap	Interest Expense Other InterestExpenseOther	4593000	USD
CY2011	us-gaap	Interest Expense Other InterestExpenseOther	-189000	USD
CY2012	us-gaap	Interest Expense Other InterestExpenseOther	1314000	USD
CY2012	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	28937000	USD
CY2011	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	8919000	USD
CY2010	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	7642000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	212364000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	138762000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	242587000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	63687000	USD
CY2011Q4	us-gaap	Interest Payable Current InterestPayableCurrent	63577000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	250000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2750000000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	258335000	USD
CY2012Q4	us-gaap	Inventory Net InventoryNet	247766000	USD
CY2012Q4	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	133578000	USD
CY2011Q4	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	109318000	USD
CY2011Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	182036000	USD
CY2012Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	222830000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	94137000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	118964000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	111861000	USD
CY2012Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	162154000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	8717164000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	8914815000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12670909000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12525700000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1387099000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1388397000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	200000000	USD
CY2012	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2017-03-30
CY2010	us-gaap	Litigation Settlement Gross LitigationSettlementGross	1209000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	3129017000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	3133993000	USD
CY2011Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	3177423000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	3174586000	USD
CY2011Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	20691000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	13485000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	-11759000	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	-4544000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1619230000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	5035000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1503283000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	3334000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	4862000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	4965000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3122234000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3124473000	USD
CY2012Q4	us-gaap	Loss Contingency Range Of Possible Loss Portion Not Accrued LossContingencyRangeOfPossibleLossPortionNotAccrued	1066000000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	-47000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	0	USD
CY2010	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	-1009060000	USD
CY2010	us-gaap	Minority Interest Increase From Stock Issuance MinorityInterestIncreaseFromStockIssuance	2178000	USD
CY2011	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	8464000	USD
CY2010	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-4094000	USD
CY2012	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	350000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-606140000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	4379849000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-81577000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1000410000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-578524000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5543974000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1131312000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1527606000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	728129000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	632497000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	388470000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	346781000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	152739000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	149903000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	-11368000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	97196000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	77384000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	167329000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	195635000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	192149000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-397000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	11845000	USD
CY2012	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-1480573000	USD
CY2010	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	721997000	USD
CY2011	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-339098000	USD
CY2011	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	75281000	USD
CY2011Q4	us-gaap	Notes And Loans Payable Current NotesAndLoansPayableCurrent	0	USD
CY2012Q4	us-gaap	Notes And Loans Payable Current NotesAndLoansPayableCurrent	25073000	USD
CY2011Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	314950000	USD
CY2012Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	318387000	USD
CY2011Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	300492000	USD
CY2012Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	25977000	USD
CY2012Q4	us-gaap	Oil And Gas Delivery Commitments And Contracts Remaining Contractual Volume OilAndGasDeliveryCommitmentsAndContractsRemainingContractualVolume	59.9	MMcf
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	439669000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	88997000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	34025000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	44453000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	65072000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	74485000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	132637000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	147067000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	135067000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	768494000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	770070000	USD
CY2012Q4	us-gaap	Other Assets OtherAssets	940848000	USD
CY2011Q4	us-gaap	Other Assets OtherAssets	1301307000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	288907000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	227077000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	221228000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	32813000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-129231000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	105693000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-25291000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-75019000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	54212000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	72784000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-228577000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	121484000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	60925000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	108031000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	140985000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	200700000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	114240000	USD
CY2012	us-gaap	Other Income OtherIncome	409704000	USD
CY2010	us-gaap	Other Income OtherIncome	97507000	USD
CY2011	us-gaap	Other Income OtherIncome	153620000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	131025000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	124936000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	40560000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	32472000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	33923000	USD
CY2011Q4	us-gaap	Other Postretirement Benefits Payable Current And Noncurrent OtherPostretirementBenefitsPayableCurrentAndNoncurrent	182529000	USD
CY2012Q4	us-gaap	Other Postretirement Benefits Payable Current And Noncurrent OtherPostretirementBenefitsPayableCurrentAndNoncurrent	185770000	USD
CY2012Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	2832401000	USD
CY2011Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	3059671000	USD
CY2012Q4	us-gaap	Other Receivables OtherReceivables	131131000	USD
CY2011Q4	us-gaap	Other Receivables OtherReceivables	105708000	USD
CY2012Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	131131000	USD
CY2011Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	105708000	USD
CY2010	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	-11452000	USD
CY2011	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	-55876000	USD
CY2012	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	23451000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	48294000	USD
CY2012	us-gaap	Payments Of Dividends PaymentsOfDividends	142278000	USD
CY2010	us-gaap	Payments Of Dividends PaymentsOfDividends	85861000	USD
CY2011	us-gaap	Payments Of Dividends PaymentsOfDividends	96356000	USD
CY2011	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	15686000	USD
CY2012	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	210000	USD
CY2010	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	84248000	USD
CY2012Q4	us-gaap	Payments Of Merger Related Costs Financing Activities PaymentsOfMergerRelatedCostsFinancingActivities	14907000	USD
CY2010	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	991034000	USD
CY2012	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	0	USD
CY2011	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	0	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	3470212000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1575230000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1154024000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1382371000	USD
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2011Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2011Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	239353000	USD
CY2012Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	157360000	USD
CY2012Q4	us-gaap	Prepaid Royalties PrepaidRoyalties	391501000	USD
CY2011Q4	us-gaap	Prepaid Royalties PrepaidRoyalties	393340000	USD
CY2012	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	333640000	USD
CY2010	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	295142000	USD
CY2011	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	463401000	USD
CY2012Q4	us-gaap	Price Risk Cash Flow Hedge Unrealized Gain Loss To Be Reclassified During Next12 Months PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months	47696	USD
CY2010	us-gaap	Proceeds From Contributions From Parent ProceedsFromContributionsFromParent	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8278000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1828862000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	-200000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	150000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	37846000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-74302000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-9999000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	52423000	USD
CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-284000000	USD
CY2012	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	0	USD
CY2010	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-188850000	USD
CY2010	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	59844000	USD
CY2011	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	747971000	USD
CY2012	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	646565000	USD
CY2012	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	-9485000	USD
CY2010	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	5993000	USD
CY2011	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	9033000	USD
CY2012Q4	us-gaap	Productive Gas Wells Number Of Wells Gross ProductiveGasWellsNumberOfWellsGross	14906000
CY2012Q4	us-gaap	Productive Gas Wells Number Of Wells Net ProductiveGasWellsNumberOfWellsNet	12819000
CY2012	us-gaap	Profit Loss ProfitLoss	388073000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	358626000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	632497000	USD
CY2012Q3	us-gaap	Profit Loss ProfitLoss	-11473000	USD
CY2012Q2	us-gaap	Profit Loss ProfitLoss	152710000	USD
CY2012Q1	us-gaap	Profit Loss ProfitLoss	97196000	USD
CY2012Q4	us-gaap	Profit Loss ProfitLoss	149640000	USD
CY2011Q4	us-gaap	Profit Loss ProfitLoss	195635000	USD
CY2011Q1	us-gaap	Profit Loss ProfitLoss	192149000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	167329000	USD
CY2011Q2	us-gaap	Profit Loss ProfitLoss	77384000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	14087319000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	15545204000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	9326416000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	10190967000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	10129251000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	659736000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	706388000	USD
CY2011Q4	us-gaap	Property Subject To Or Available For Operating Lease Gross PropertySubjectToOrAvailableForOperatingLeaseGross	540817000	USD
CY2012Q4	us-gaap	Property Subject To Or Available For Operating Lease Gross PropertySubjectToOrAvailableForOperatingLeaseGross	529758000	USD
CY2012	us-gaap	Proved Developed And Undeveloped Reserves Extensions Discoveries And Additions ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions	954378000	MMcf
CY2010	us-gaap	Proved Developed And Undeveloped Reserves Extensions Discoveries And Additions ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions	621270000	MMcf
CY2011	us-gaap	Proved Developed And Undeveloped Reserves Extensions Discoveries And Additions ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions	517178000	MMcf
CY2011Q4	us-gaap	Proved Developed And Undeveloped Reserves Net ProvedDevelopedAndUndevelopedReservesNet	3480027000	MMcf
CY2009Q4	us-gaap	Proved Developed And Undeveloped Reserves Net ProvedDevelopedAndUndevelopedReservesNet	1911391000	MMcf
CY2010Q4	us-gaap	Proved Developed And Undeveloped Reserves Net ProvedDevelopedAndUndevelopedReservesNet	3731597000	MMcf
CY2012Q4	us-gaap	Proved Developed And Undeveloped Reserves Net ProvedDevelopedAndUndevelopedReservesNet	3993458000	MMcf
CY2012	us-gaap	Proved Developed And Undeveloped Reserves Production ProvedDevelopedAndUndevelopedReservesProduction	156325000	MMcf
CY2011	us-gaap	Proved Developed And Undeveloped Reserves Production ProvedDevelopedAndUndevelopedReservesProduction	153504000	MMcf
CY2010	us-gaap	Proved Developed And Undeveloped Reserves Production ProvedDevelopedAndUndevelopedReservesProduction	127875000	MMcf
CY2011	us-gaap	Proved Developed And Undeveloped Reserves Purchases Of Minerals In Place ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace	0	MMcf
CY2012	us-gaap	Proved Developed And Undeveloped Reserves Purchases Of Minerals In Place ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace	0	MMcf
CY2010	us-gaap	Proved Developed And Undeveloped Reserves Purchases Of Minerals In Place ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace	946834000	MMcf
CY2011	us-gaap	Proved Developed And Undeveloped Reserves Revisions Of Previous Estimates Increase Decrease ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease	-9976000	MMcf
CY2012	us-gaap	Proved Developed And Undeveloped Reserves Revisions Of Previous Estimates Increase Decrease ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease	-526611000	MMcf
CY2010	us-gaap	Proved Developed And Undeveloped Reserves Revisions Of Previous Estimates Increase Decrease ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease	13612000	MMcf
CY2010	us-gaap	Proved Developed And Undeveloped Reserves Sales Of Minerals In Place ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace	0	MMcf
CY2012	us-gaap	Proved Developed And Undeveloped Reserves Sales Of Minerals In Place ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace	0	MMcf
CY2011	us-gaap	Proved Developed And Undeveloped Reserves Sales Of Minerals In Place ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace	-531431000	MMcf
CY2009Q4	us-gaap	Proved Developed Reserves Volume ProvedDevelopedReservesVolume	1040257000	MMcf
CY2011Q4	us-gaap	Proved Developed Reserves Volume ProvedDevelopedReservesVolume	2135805000	MMcf
CY2010Q4	us-gaap	Proved Developed Reserves Volume ProvedDevelopedReservesVolume	1931272000	MMcf
CY2012Q4	us-gaap	Proved Developed Reserves Volume ProvedDevelopedReservesVolume	2165483000	MMcf
CY2011Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1542837000	USD
CY2012Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	1606376000	USD
CY2011Q4	us-gaap	Proved Undeveloped Reserve Volume ProvedUndevelopedReserveVolume	1344222000	MMcf
CY2010Q4	us-gaap	Proved Undeveloped Reserve Volume ProvedUndevelopedReserveVolume	1800325000	MMcf
CY2009Q4	us-gaap	Proved Undeveloped Reserve Volume ProvedUndevelopedReserveVolume	871134000	MMcf
CY2012Q4	us-gaap	Proved Undeveloped Reserve Volume ProvedUndevelopedReserveVolume	1827975000	MMcf
CY2011	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	189000	USD
CY2010	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	11412000	USD
CY2011	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	11627000	USD
CY2010	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	-150000000	USD
CY2011	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	200000000	USD
CY2012	us-gaap	Revenue Mineral Sales RevenueMineralSales	4825946000	USD
CY2012	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	14447000	USD
CY2010	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	93482000	USD
CY2010	us-gaap	Results Of Operations Expense From Oil And Gas Producing Activities ResultsOfOperationsExpenseFromOilAndGasProducingActivities	559148000	USD
CY2010	us-gaap	Results Of Operations Expense Other ResultsOfOperationsExpenseOther	25220000	USD
CY2011	us-gaap	Results Of Operations Expense Other ResultsOfOperationsExpenseOther	18095000	USD
CY2010	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	260757000	USD
CY2012	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	0	USD
CY2011	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	0	USD
CY2010	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	0	USD
CY2012	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	-15594000	USD
CY2011	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	199484000	USD
CY2012	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	104423000	USD
CY2011Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	48294000	USD
CY2011Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	22148000	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	20379000	USD
CY2011	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	206821000	USD
CY2010	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	190424000	USD
CY2012	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	202956000	USD
CY2011	us-gaap	Results Of Operations Expense From Oil And Gas Producing Activities ResultsOfOperationsExpenseFromOilAndGasProducingActivities	623556000	USD
CY2012	us-gaap	Results Of Operations Expense From Oil And Gas Producing Activities ResultsOfOperationsExpenseFromOilAndGasProducingActivities	608740000	USD
CY2011	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	79873000	USD
CY2012	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	39827000	USD
CY2010	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	106598000	USD
CY2010	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	154159000	USD
CY2012	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	64596000	USD
CY2011	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	119611000	USD
CY2011	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	106477000	USD
CY2012	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	90835000	USD
CY2010	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	64820000	USD
CY2010	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	819905000	USD
CY2011	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	823040000	USD
CY2012	us-gaap	Results Of Operations Revenue From Oil And Gas Producing Activities ResultsOfOperationsRevenueFromOilAndGasProducingActivities	713163000	USD
CY2012	us-gaap	Results Of Operations Sales Revenue To Unaffiliated Enterprises ResultsOfOperationsSalesRevenueToUnaffiliatedEnterprises	660442000	USD
CY2011	us-gaap	Results Of Operations Sales Revenue To Unaffiliated Enterprises ResultsOfOperationsSalesRevenueToUnaffiliatedEnterprises	751767000	USD
CY2010	us-gaap	Results Of Operations Sales Revenue To Unaffiliated Enterprises ResultsOfOperationsSalesRevenueToUnaffiliatedEnterprises	745809000	USD
CY2012	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	160575000	USD
CY2010	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	127927000	USD
CY2011	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	142339000	USD
CY2011Q4	us-gaap	Retail Related Inventory Merchandise RetailRelatedInventoryMerchandise	43639000	USD
CY2012Q4	us-gaap	Retail Related Inventory Merchandise RetailRelatedInventoryMerchandise	35363000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2402551000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2184737000	USD
CY2011Q4	us-gaap	Retained Interest Fair Value Disclosure RetainedInterestFairValueDisclosure	192700000	USD
CY2010	us-gaap	Revenue From Purchased Oil And Gas RevenueFromPurchasedOilAndGas	11227000	USD
CY2012	us-gaap	Revenue From Purchased Oil And Gas RevenueFromPurchasedOilAndGas	3316000	USD
CY2011	us-gaap	Revenue From Purchased Oil And Gas RevenueFromPurchasedOilAndGas	4344000	USD
CY2011	us-gaap	Revenue Mineral Sales RevenueMineralSales	5660813000	USD
CY2010	us-gaap	Revenue Mineral Sales RevenueMineralSales	4938703000	USD
CY2012	us-gaap	Revenue Recognition Services Royalty Fees RevenueRecognitionServicesRoyaltyFees	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;padding-left:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Royalty Recognition: </font></div><div style="line-height:120%;text-align:justify;padding-left:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Royalty expenses for coal rights are included in Cost of Goods Sold and Other Operating Charges when the related revenue for the coal sale is recognized. Royalty expenses for gas rights are included in Gas Royalty Interest Costs when the related revenue for the gas sale is recognized. These royalty expenses are paid in cash in accordance with the terms of each agreement. Revenues for coal and gas sold related to production under royalty contracts, versus owned by CONSOL Energy, are recorded on a gross basis.</font></div></div>
CY2012	us-gaap	Revenues Revenues	5430307000	USD
CY2010	us-gaap	Revenues Revenues	5236021000	USD
CY2011	us-gaap	Revenues Revenues	6117242000	USD
CY2010	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	0	USD
CY2012	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	0	USD
CY2011	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	0	USD
CY2010	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	414704000	USD
CY2012	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-104158000	USD
CY2011	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-83580000	USD
CY2011	us-gaap	Royalty Revenue RoyaltyRevenue	18491000	USD
CY2010	us-gaap	Royalty Revenue RoyaltyRevenue	14688000	USD
CY2012	us-gaap	Royalty Revenue RoyaltyRevenue	16865000	USD
CY2010	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	-286883000	USD
CY2012	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	-104518000	USD
CY2011	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	-217186000	USD
CY2012Q4	us-gaap	Sales Revenue Net SalesRevenueNet	1256712000	USD
CY2012Q2	us-gaap	Sales Revenue Net SalesRevenueNet	1199477000	USD
CY2012Q3	us-gaap	Sales Revenue Net SalesRevenueNet	1097962000	USD
CY2012Q1	us-gaap	Sales Revenue Net SalesRevenueNet	1324516000	USD
CY2011Q4	us-gaap	Sales Revenue Net SalesRevenueNet	1383431000	USD
CY2011Q1	us-gaap	Sales Revenue Net SalesRevenueNet	1405293000	USD
CY2011Q3	us-gaap	Sales Revenue Net SalesRevenueNet	1439930000	USD
CY2011Q2	us-gaap	Sales Revenue Net SalesRevenueNet	1503435000	USD
CY2010	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	9796000	USD
CY2012	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	9029000	USD
CY2011	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	9059000	USD
CY2012Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	1266444000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	37586000	USD
CY2011Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	91349000	USD
CY2011Q4	us-gaap	Secured Debt Current SecuredDebtCurrent	0	USD
CY2012Q4	us-gaap	Secured Debt Current SecuredDebtCurrent	37846000	USD
CY2011Q4	us-gaap	Securitized Assets And Any Other Financial Assets Managed Together Principal Amount Outstanding SecuritizedAssetsAndAnyOtherFinancialAssetsManagedTogetherPrincipalAmountOutstanding	192700000	USD
CY2012Q4	us-gaap	Securitized Assets And Any Other Financial Assets Managed Together Principal Amount Outstanding SecuritizedAssetsAndAnyOtherFinancialAssetsManagedTogetherPrincipalAmountOutstanding	200000000	USD
CY2010	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	5138514000	USD
CY2012	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	5020603000	USD
CY2011	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	5963622000	USD
CY2010	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	150210000	USD
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	148071000	USD
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	175467000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	48842000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	47593000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	47838000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0118
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0082
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0080
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.5900
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.5510
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.5480
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0073
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0161
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0188
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	31800000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	8513118	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	1671	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	20.47
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	14.58
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	21.97
CY2012Q4	us-gaap	Short Term Non Bank Loans And Notes Payable ShortTermNonBankLoansAndNotesPayable	25073000	USD
CY2011	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	154137000	USD
CY2012	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-96749000	USD
CY2010	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-12060000	USD
CY2011Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	1747181000	USD
CY2010Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	1660821000	USD
CY2012Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	736206000	USD
CY2009Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	894351000	USD
CY2011	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	0	shares
CY2012	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	0	shares
CY2010	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	44275000	shares
CY2011	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	894079	shares
CY2010	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	800866	shares
CY2012	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	1038500	shares
CY2010	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1828862000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	355000	USD
CY2011	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	1312000	USD
CY2012	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	-19641000	USD
CY2010	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	-13588000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	3610885000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	3953792000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3610885000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3953745000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2936013000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2024479000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	34786000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2010	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	328458000	USD
CY2011	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	344460000	USD
CY2012	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	336655000	USD
CY2011	us-gaap	Taxes Other TaxesOther	344460000	USD
CY2010	us-gaap	Taxes Other TaxesOther	328458000	USD
CY2012	us-gaap	Taxes Other TaxesOther	336655000	USD
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	609000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	9346000	USD
CY2011Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	1258027000	USD
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	227593524	shares
CY2012Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	227898021	shares
CY2012Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	227654395	shares
CY2012Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	227269269	shares
CY2012	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-543000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-3096000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-17362000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-2800000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3891000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2071000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-36401000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	4831000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5373000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	2265000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2011	us-gaap	Unrecorded Unconditional Purchase Obligation Purchases UnrecordedUnconditionalPurchaseObligationPurchases	212362000	USD
CY2010	us-gaap	Unrecorded Unconditional Purchase Obligation Purchases UnrecordedUnconditionalPurchaseObligationPurchases	126135000	USD
CY2012	us-gaap	Unrecorded Unconditional Purchase Obligation Purchases UnrecordedUnconditionalPurchaseObligationPurchases	393464000	USD
CY2012	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:6px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"></font></div><div style="line-height:120%;padding-top:18px;text-align:justify;padding-left:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates: </font></div><div style="line-height:120%;padding-top:6px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and various disclosures. Actual results could differ from those estimates. The most significant estimates included in the preparation of the financial statements are related to business combinations, other postretirement benefits, coal workers' pneumoconiosis, workers' compensation, salary retirement benefits, stock-based compensation, asset retirement obligations, deferred income tax assets and liabilities, contingencies, and coal and gas reserve values.</font></div></div>
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	217037804	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	229141767	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	229003599	shares
CY2012Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	229934465	shares
CY2012Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	227654395	shares
CY2012Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	230124011	shares
CY2012Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	229252185	shares
CY2011Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	229314370	shares
CY2011Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	228814838	shares
CY2011Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	229138024	shares
CY2011Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	229163537	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	226680369	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	214920561	shares
CY2012Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	155648000	USD
CY2011Q4	cnx	Accounts Receivable Securitized AccountsReceivableSecuritized	0	USD
CY2012Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	227548394	shares
CY2012Q4	cnx	Accounts Receivable Securitized AccountsReceivableSecuritized	37846000	USD
CY2012	cnx	Asset Retirement Obligation Other Change AssetRetirementObligationOtherChange	-4139000	USD
CY2011	cnx	Asset Retirement Obligation Other Change AssetRetirementObligationOtherChange	-6698000	USD
CY2011Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	226647752	shares
CY2011Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	226744011	shares
CY2011Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	226350594	shares
CY2011Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	226971597	shares
CY2012Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	25491000	USD
CY2011Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	24837000	USD
CY2011Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	151034000	USD
CY2012Q4	cnx	Coal And Other Plant And Equipment CoalAndOtherPlantAndEquipment	6022404000	USD
CY2011Q4	cnx	Coal And Other Plant And Equipment CoalAndOtherPlantAndEquipment	5160759000	USD
CY2011Q4	cnx	Coal Properties And Surface Lands CoalPropertiesAndSurfaceLands	1340757000	USD
CY2012Q4	cnx	Coal Properties And Surface Lands CoalPropertiesAndSurfaceLands	1336186000	USD
CY2011	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	3501298000	USD
CY2012	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	3421953000	USD
CY2010	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	3262327000	USD
CY2012Q1	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	914807000	USD
CY2012Q4	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	845032000	USD
CY2012Q3	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	838810000	USD
CY2012Q2	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	864882000	USD
CY2011Q4	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	894543000	USD
CY2011Q2	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	943541000	USD
CY2011Q3	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	895075000	USD
CY2011Q1	cnx	Cost Of Goods Sold And Other Operating Charges CostOfGoodsSoldAndOtherOperatingCharges	831192000	USD
CY2011Q4	cnx	Drilling Cost DrillingCost	1277678000	USD
CY2012Q4	cnx	Drilling Cost DrillingCost	1550539000	USD
CY2012	cnx	Eerp Reimbursement EerpReimbursement	7973	USD
CY2011	cnx	Effect Of2003 Healthcare Act EffectOf2003HealthcareAct	2112000	USD
CY2010	cnx	Effect Of2003 Healthcare Act EffectOf2003HealthcareAct	2113000	USD
CY2012	cnx	Effect Of2003 Healthcare Act EffectOf2003HealthcareAct	2112000	USD
CY2011	cnx	Effective Income Tax Rate Recon2003 Healthcare Act EffectiveIncomeTaxRateRecon2003HealthcareAct	0.003	USD
CY2010	cnx	Effective Income Tax Rate Recon2003 Healthcare Act EffectiveIncomeTaxRateRecon2003HealthcareAct	0.004	USD
CY2012	cnx	Effective Income Tax Rate Recon2003 Healthcare Act EffectiveIncomeTaxRateRecon2003HealthcareAct	0.004	USD
CY2012	cnx	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognitio EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognitio	1.60	USD
CY2012	cnx	Financing Related Fees FinancingRelatedFees	1723000	USD
CY2011	cnx	Financing Related Fees FinancingRelatedFees	1986000	USD
CY2010	cnx	Financing Related Fees FinancingRelatedFees	2676000	USD
CY2012Q4	cnx	Gas And Oil Acreage Unproved Net GasAndOilAcreageUnprovedNet	4038515000	acre
CY2012Q4	cnx	Gas Gathering Systems Net GasGatheringSystemsNet	1006882000	USD
CY2011Q4	cnx	Gas Gathering Systems Net GasGatheringSystemsNet	963494000	USD
CY2012Q4	cnx	Gas Well Closing Liability Current GasWellClosingLiabilityCurrent	9729000	USD
CY2011Q4	cnx	Gas Well Closing Liability Current GasWellClosingLiabilityCurrent	24660000	USD
CY2011Q4	cnx	Gas Wells And Related Equipment GasWellsAndRelatedEquipment	408814000	USD
CY2012Q4	cnx	Gas Wells And Related Equipment GasWellsAndRelatedEquipment	492112000	USD
CY2012Q4	cnx	Letters Of Credit LettersOfCredit	200000000	USD
CY2012Q4	cnx	Long Term Disability Current LongTermDisabilityCurrent	6553000	USD
CY2011Q4	cnx	Long Term Disability Current LongTermDisabilityCurrent	6294000	USD
CY2011Q4	cnx	Mine Closing Liability Current MineClosingLiabilityCurrent	34501000	USD
CY2012Q4	cnx	Mine Closing Liability Current MineClosingLiabilityCurrent	25081000	USD
CY2012Q4	cnx	Mine Closing Liability Noncurrent MineClosingLiabilityNoncurrent	446727000	USD
CY2011Q4	cnx	Mine Closing Liability Noncurrent MineClosingLiabilityNoncurrent	406712000	USD
CY2012Q4	cnx	Mine Development MineDevelopment	537939000	USD
CY2011Q4	cnx	Mine Development MineDevelopment	457179000	USD
CY2012Q4	cnx	Mine Reclamation Liability Noncurrent MineReclamationLiabilityNoncurrent	47965000	USD
CY2011Q4	cnx	Mine Reclamation Liability Noncurrent MineReclamationLiabilityNoncurrent	39969000	USD
CY2012Q4	cnx	Other Gas Assets OtherGasAssets	90446000	USD
CY2011Q4	cnx	Other Gas Assets OtherGasAssets	79816000	USD
CY2010	cnx	Payments On Long Term Notes Including Redemption Premium PaymentsOnLongTermNotesIncludingRedemptionPremium	0	USD
CY2011	cnx	Payments On Long Term Notes Including Redemption Premium PaymentsOnLongTermNotesIncludingRedemptionPremium	265785000	USD
CY2012	cnx	Payments On Long Term Notes Including Redemption Premium PaymentsOnLongTermNotesIncludingRedemptionPremium	0	USD
CY2011Q4	cnx	Pneumoconiosis Benefits PneumoconiosisBenefits	173553000	USD
CY2012Q4	cnx	Pneumoconiosis Benefits PneumoconiosisBenefits	174781000	USD
CY2011Q4	cnx	Pneumoconiosis Liability Current PneumoconiosisLiabilityCurrent	10027000	USD
CY2012Q4	cnx	Pneumoconiosis Liability Current PneumoconiosisLiabilityCurrent	9298000	USD
CY2012	cnx	Purchase Of Cnx Gas Noncontrolling Interest PurchaseOfCnxGasNoncontrollingInterest	0	USD
CY2011	cnx	Purchase Of Cnx Gas Noncontrolling Interest PurchaseOfCnxGasNoncontrollingInterest	0	USD
CY2010	cnx	Purchase Of Cnx Gas Noncontrolling Interest PurchaseOfCnxGasNoncontrollingInterest	18026000	USD
CY2010	cnx	Royalty Interest Gas Revenue RoyaltyInterestGasRevenue	62869000	USD
CY2012	cnx	Right Of Way Issuance RightOfWayIssuance	5030000	USD
CY2010	cnx	Right Of Way Issuance RightOfWayIssuance	122000	USD
CY2011	cnx	Right Of Way Issuance RightOfWayIssuance	13519000	USD
CY2012	cnx	Royalty Interest Gas Revenue RoyaltyInterestGasRevenue	49405000	USD
CY2011	cnx	Royalty Interest Gas Revenue RoyaltyInterestGasRevenue	66929000	USD
CY2011	cnx	Share Based Comp Expected Forfeiture Rate ShareBasedCompExpectedForfeitureRate	0.0200
CY2010	cnx	Share Based Comp Expected Forfeiture Rate ShareBasedCompExpectedForfeitureRate	0.0200
CY2012	cnx	Share Based Comp Expected Forfeiture Rate ShareBasedCompExpectedForfeitureRate	0.0200
CY2012	cnx	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected T ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedT	4.40	USD
CY2011	cnx	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Te ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTe	4.26	USD
CY2010	cnx	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Ter ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTer	4.04	USD
CY2012Q4	cnx	Subsidence Liability SubsidenceLiability	126078000	USD
CY2011Q4	cnx	Subsidence Liability SubsidenceLiability	108094000	USD
CY2012Q4	cnx	Total Acreage Gross TotalAcreageGross	5603725000	acre
CY2012Q4	cnx	Total Acreage Net TotalAcreageNet	4587481000	acre
CY2012Q4	cnx	Total Deferred Credits And Other Liabilities TotalDeferredCreditsAndOtherLiabilities	4155479000	USD
CY2011Q4	cnx	Total Deferred Credits And Other Liabilities TotalDeferredCreditsAndOtherLiabilities	4348995000	USD
CY2012Q4	cnx	Total Other Assets TotalOtherAssets	940848000	USD
CY2011Q4	cnx	Total Other Assets TotalOtherAssets	1301307000	USD
CY2010	cnx	Treasury Rate Lock Net Of Tax TreasuryRateLockNetOfTax	-84000	USD
CY2011	cnx	Treasury Rate Lock Net Of Tax TreasuryRateLockNetOfTax	-96000	USD
CY2012	cnx	Treasury Rate Lock Net Of Tax TreasuryRateLockNetOfTax	0	USD
CY2012Q4	cnx	Unproved Acreage Gross UnprovedAcreageGross	4930181000	acre
CY2012Q4	cnx	Voluntary Severance Incentive Program VoluntarySeveranceIncentiveProgram	13304000	USD
CY2011Q4	cnx	Voluntary Severance Incentive Program VoluntarySeveranceIncentiveProgram	0	USD
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Document Type DocumentType	10-K
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0001070412
CY2013Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	228132961	shares
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012Q2	dei	Entity Public Float EntityPublicFloat	2829700137	USD
CY2012	dei	Entity Registrant Name EntityRegistrantName	CONSOL Energy Inc
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2012Q4	invest	Derivative Nonmonetary Notional Amount DerivativeNonmonetaryNotionalAmount	167.9

Files In Submission

Name	View Source	Status
0001070412-13-000011-index-headers.html	Edgar Link	pending
0001070412-13-000011-index.html	Edgar Link	pending
0001070412-13-000011.txt	Edgar Link	pending
0001070412-13-000011-xbrl.zip	Edgar Link	pending
a20130122coalandgasoperation.jpg	Edgar Link	pending
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$CNX
CNX Resources Corp Stock $cnx

2012 Q4 Form 10-K Financial Statement

#000107041213000011 Filed on February 07, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNX CNX Resources Corp Stock $cnx

2012 Q4 Form 10-K Financial Statement

#000107041213000011 Filed on February 07, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CNX
CNX Resources Corp Stock $cnx