$CEIX
CONSOL Energy Inc. Stock $ceix

$ceix Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000143774922003140 Filed on February 11, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$363.0M	$1.259B	$323.8M
YoY Change	12.12%	23.23%	-5.5%
Cost Of Revenue	$31.45M	$103.8M	$20.80M
YoY Change	51.19%	159.55%	271.43%
Gross Profit	$331.6M	$1.192B	$302.9M
YoY Change	9.47%	23.54%	-9.99%
Gross Profit Margin	91.34%	94.71%	93.55%
Selling, General & Admin	$20.13M	$89.11M	$33.00M
YoY Change	-39.0%	22.57%	132.23%
% of Gross Profit	6.07%	7.47%	10.89%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$56.51M	$224.6M	$54.70M
YoY Change	3.31%	6.56%	-2.06%
% of Gross Profit	17.04%	18.84%	18.06%
Operating Expenses	$270.7M	$89.11M	$273.6M
YoY Change	-1.04%	22.57%	1825.4%
Operating Profit	$60.86M	$1.103B	$29.30M
YoY Change	107.7%	23.62%	-90.91%
Interest Expense	$100.6M	$63.34M	-$14.30M
YoY Change	-803.29%	3.52%	-188.14%
% of Operating Profit	165.26%	5.74%	-48.81%
Other Income/Expense, Net		$38.39M
YoY Change		-69.74%
Pretax Income	$162.6M	$35.41M	$18.60M
YoY Change	774.12%	-483.11%	-16.15%
Income Tax	$45.26M	$1.297M	$3.800M
% Of Pretax Income	27.84%	3.66%	20.43%
Net Earnings	$117.3M	$34.11M	$13.10M
YoY Change	795.6%	-449.67%	-6.07%
Net Earnings / Revenue	32.32%	2.71%	4.05%
Basic Earnings Per Share		$0.99
Diluted Earnings Per Share	$3.054M	$0.96	$500.0K
COMMON SHARES
Basic Shares Outstanding	34.48M	34.40M	26.04M
Diluted Shares Outstanding		35.39M

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$149.9M	$149.9M	$50.90M
YoY Change	194.52%	194.52%	-36.61%
Cash & Equivalents	$149.9M	$149.9M	$50.85M
Short-Term Investments
Other Short-Term Assets	$57.82M	$57.82M	$25.40M
YoY Change	127.64%	127.64%	-17.8%
Inventory	$62.88M	$62.88M	$56.20M
Prepaid Expenses	$25.22M
Receivables	$104.1M	$104.1M	$118.3M
Other Receivables	$11.63M	$11.63M	$42.16M
Total Short-Term Assets	$386.3M	$386.3M	$292.9M
YoY Change	31.88%	31.9%	-13.34%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.979B	$2.001B	$2.049B
YoY Change	-3.44%	-4.85%	-2.06%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$208.6M	$186.7M	$181.4M
YoY Change	15.03%	45.95%	-31.2%
Total Long-Term Assets	$2.187B	$2.187B	$2.230B
YoY Change	-1.94%	-1.94%	-5.32%
TOTAL ASSETS
Total Short-Term Assets	$386.3M	$386.3M	$292.9M
Total Long-Term Assets	$2.187B	$2.187B	$2.230B
Total Assets	$2.574B	$2.574B	$2.523B
YoY Change	1.99%	1.99%	-6.33%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$80.34M	$80.34M	$71.23M
YoY Change	12.8%	12.84%	-32.94%
Accrued Expenses	$248.7M	$300.9M	$223.2M
YoY Change	11.43%	34.8%	-5.35%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$36.59M	$64.01M	$33.73M
YoY Change	8.47%	-13.61%	5.24%
Total Short-Term Liabilities	$445.2M	$445.2M	$368.5M
YoY Change	20.83%	20.82%	-6.07%
LONG-TERM LIABILITIES
Long-Term Debt	$568.1M	$609.9M	$566.9M
YoY Change	0.21%	-4.51%	-13.3%
Other Long-Term Liabilities	$17.54M	$845.5M	$17.37M
YoY Change	0.94%	-12.17%	16.45%
Total Long-Term Liabilities	$585.6M	$1.455B	$584.2M
YoY Change	0.23%	-9.11%	-12.63%
TOTAL LIABILITIES
Total Short-Term Liabilities	$445.2M	$445.2M	$368.5M
Total Long-Term Liabilities	$585.6M	$1.455B	$584.2M
Total Liabilities	$1.901B	$1.901B	$1.970B
YoY Change	-3.51%	-3.51%	-7.14%
SHAREHOLDERS EQUITY
Retained Earnings	$281.0M		$246.9M
YoY Change	13.82%		-5.02%
Common Stock	$345.0K		$340.0K
YoY Change	1.47%		31.27%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$672.8M	$672.8M	$553.5M
YoY Change
Total Liabilities & Shareholders Equity	$2.574B	$2.574B	$2.523B
YoY Change	1.99%	1.99%	-6.33%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$117.3M	$34.11M	$13.10M
YoY Change	795.6%	-449.67%	-6.07%
Depreciation, Depletion And Amortization	$56.51M	$224.6M	$54.70M
YoY Change	3.31%	6.56%	-2.06%
Cash From Operating Activities	$52.43M	$305.6M	$66.90M
YoY Change	-21.64%	136.27%	212.62%
INVESTING ACTIVITIES
Capital Expenditures	-$29.43M	$132.8M	-$20.00M
YoY Change	47.17%	54.36%	-47.64%
Acquisitions
YoY Change
Other Investing Activities	-$6.324M	$8.181M	$1.100M
YoY Change	-674.91%	3472.49%	-122.92%
Cash From Investing Activities	-$35.76M	-$127.4M	-$18.90M
YoY Change	89.2%	66.85%	-56.05%
FINANCING ACTIVITIES
Cash Dividend Paid		$0.00
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-30.77M	-$30.85M	-19.40M
YoY Change	58.6%	-62.58%	-41.03%
NET CHANGE
Cash From Operating Activities	52.43M	$305.6M	66.90M
Cash From Investing Activities	-35.76M	-$127.4M	-18.90M
Cash From Financing Activities	-30.77M	-$30.85M	-19.40M
Net Change In Cash	-14.10M	$147.4M	28.60M
YoY Change	-149.3%	-600.48%	-152.48%
FREE CASH FLOW
Cash From Operating Activities	$52.43M	$305.6M	$66.90M
Capital Expenditures	-$29.43M	$132.8M	-$20.00M
Free Cash Flow	$81.86M	$172.8M	$86.90M
YoY Change	-5.8%	298.87%	45.81%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3633000	USD
CY2021	dei	Auditor Location AuditorLocation	Pittsburgh, Pennsylvania
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	601000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	619000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	697000	USD
CY2021	ceix	Other Comprehensive Income Loss Defined Benefit Plan Actuarial Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossDefinedBenefitPlanActuarialGainLossArisingDuringPeriodTax	-5122000	USD
CY2020	ceix	Other Comprehensive Income Loss Defined Benefit Plan Actuarial Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossDefinedBenefitPlanActuarialGainLossArisingDuringPeriodTax	-5596000	USD
CY2019	ceix	Other Comprehensive Income Loss Defined Benefit Plan Actuarial Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossDefinedBenefitPlanActuarialGainLossArisingDuringPeriodTax	-3958000	USD
CY2021	us-gaap	Other Comprehensive Income Finalization Of Pension And Non Pension Postretirement Plan Valuation Tax OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax	-6000	USD
CY2020	us-gaap	Other Comprehensive Income Finalization Of Pension And Non Pension Postretirement Plan Valuation Tax OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Finalization Of Pension And Non Pension Postretirement Plan Valuation Tax OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax	0	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-21979000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	109000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	11690000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	596000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	674000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	37000	USD
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	62500000
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	62500000
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	34480181
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	34480181
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	34031374
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	34031374
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	-8429000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	37000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1717497
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	-4868000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	674000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	-26506000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	596000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2021Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	0	USD
CY2020Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	0	USD
CY2021	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	0	USD
CY2020	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	0	USD
CY2019	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	0	USD
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	0	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	0	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	0	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2021	ceix	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Assumed Time Horizon DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostAssumedTimeHorizon	P20Y
CY2021Q4	ceix	Number Of Mines Sold NumberOfMinesSold	5	pure
CY2021	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-52204000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	0	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	0	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	38394000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	126886000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	53349000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	11723000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	15295000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	1995000	USD
CY2021	us-gaap	Revenues Revenues	1258947000	USD
CY2020	us-gaap	Revenues Revenues	1021643000	USD
CY2019	us-gaap	Revenues Revenues	1430903000	USD
CY2021	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	743340000	USD
CY2020	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	667595000	USD
CY2019	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	948012000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	224583000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	210760000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	207097000	USD
CY2021	ceix	Freight Expense FreightExpense	103819000	USD
CY2020	ceix	Freight Expense FreightExpense	39990000	USD
CY2019	ceix	Freight Expense FreightExpense	19667000	USD
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	89113000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	72706000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	67111000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	657000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	21352000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-24455000	USD
CY2021	us-gaap	Interest Expense InterestExpense	63342000	USD
CY2020	us-gaap	Interest Expense InterestExpense	61186000	USD
CY2019	us-gaap	Interest Expense InterestExpense	66464000	USD
CY2020	ceix	Other Comprehensive Income Loss Defined Benefit Plan Actuarial Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossDefinedBenefitPlanActuarialGainLossArisingDuringPeriodAfterTax	16161000	USD
CY2019	ceix	Other Comprehensive Income Loss Defined Benefit Plan Actuarial Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossDefinedBenefitPlanActuarialGainLossArisingDuringPeriodAfterTax	11773000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Finalization Of Pension And Non Pension Postretirement Plan Valuation Net Of Tax OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Finalization Of Pension And Non Pension Postretirement Plan Valuation Net Of Tax OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax	0	USD
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	1223540000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	1030885000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	1332806000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	35407000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-9242000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	98097000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1297000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3972000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4539000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	34110000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-13214000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	93558000	USD
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-3459000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17557000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	34110000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-9755000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	76001000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.99
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.37
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.82
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.96
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.37
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.81
CY2021	us-gaap	Profit Loss ProfitLoss	34110000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-13214000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	93558000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	1804000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	1786000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	2075000	USD
CY2021	ceix	Other Comprehensive Income Loss Defined Benefit Plan Actuarial Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossDefinedBenefitPlanActuarialGainLossArisingDuringPeriodAfterTax	15374000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Finalization Of Pension And Non Pension Postretirement Plan Valuation Net Of Tax OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax	16000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	65617000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-145000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-34830000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	1721000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2004000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-117000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	80924000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	12226000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-25249000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	115034000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-988000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	68309000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-3400000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	17551000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	115034000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2412000	USD
CY2020Q4	ceix	Employee Related Liabilities Medical And Disability Benefits Noncurrent EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent	229720000	USD
CY2020Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	387637000	USD
CY2021Q4	ceix	Employee Related Liabilities Medical And Disability Benefits Noncurrent EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent	203473000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	50758000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	149913000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	50850000	USD
CY2021Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	32605000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	0	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	104099000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	118289000	USD
CY2021Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	11631000	USD
CY2020Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	42157000	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	62876000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	56200000	USD
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	25216000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	25445000	USD
CY2021Q4	us-gaap	Assets Current AssetsCurrent	386340000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	292941000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5250805000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5143696000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3272255000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3094634000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1978550000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2049062000	USD
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	57011000	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	68821000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21956000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	53436000	USD
CY2021Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	15688000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	0	USD
CY2021Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	38947000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	0	USD
CY2021Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	75025000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	59106000	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	208627000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	181363000	USD
CY2021Q4	us-gaap	Assets Assets	2573517000	USD
CY2020Q4	us-gaap	Assets Assets	2523366000	USD
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	80343000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	71229000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	57332000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	53846000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	6682000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	20241000	USD
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	300875000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	223154000	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	445232000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	368470000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	568052000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	566858000	USD
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	26598000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	36203000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	594650000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	603061000	USD
CY2021Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	329659000	USD
CY2021Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	210718000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-13214000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	93558000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	224583000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	228182000	USD
CY2021Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	58148000	USD
CY2020Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	64390000	USD
CY2021Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	26013000	USD
CY2020Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	35359000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	15274000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	35655000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	17537000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	17373000	USD
CY2021Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	860822000	USD
CY2020Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	998316000	USD
CY2021Q4	us-gaap	Liabilities Liabilities	1900704000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	1969847000	USD
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	345000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	340000	USD
CY2021Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	646945000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	642887000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	280960000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	246850000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-255437000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-336558000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	672813000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	553519000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2573517000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2523366000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	551611000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	93558000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	25132000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-117000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	68309000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	32733000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	12760000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4963000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	22220000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	572395000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-13214000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-14230000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2004000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-988000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11579000	USD
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	863000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5575000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	553519000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	34110000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-79203000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	1721000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	115034000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6632000	USD
CY2021	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2303000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	672813000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	34110000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	8181000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	229000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	5003000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	210760000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	207097000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	6632000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	11579000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	12760000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	11723000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	15295000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	1995000	USD
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8552000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	7447000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	6416000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	657000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	21352000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-24455000	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-52204000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-0	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-0	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-14760000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11685000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-17419000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-644000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1251000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-0	USD
CY2021	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-44707000	USD
CY2020	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	-11130000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Notes Receivable IncreaseDecreaseInAccountsAndNotesReceivable	38960000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	6676000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	2069000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5485000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-229000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-7574000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-497000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	13797000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	21058000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-17302000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	11473000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-30759000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-21714000	USD
CY2021	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	27461000	USD
CY2020	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-2915000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-7884000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-57413000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-25433000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-24062000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	305569000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	129331000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	244566000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	132752000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	86004000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	169739000	USD
CY2021	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	13572000	USD
CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	9899000	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	2201000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-127361000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-76334000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-172541000	USD
CY2021	ceix	Proceeds From Finance Lease Obligations ProceedsFromFinanceLeaseObligations	0	USD
CY2020	ceix	Proceeds From Finance Lease Obligations ProceedsFromFinanceLeaseObligations	19314000	USD
CY2019	ceix	Proceeds From Finance Lease Obligations ProceedsFromFinanceLeaseObligations	0	USD
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	27447000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	28295000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	18549000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	75000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	-0	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	5575000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	22220000	USD
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2303000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	863000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4963000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	-0	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	-0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	32733000	USD
CY2021	ceix	Payments For Purchase Of Common Stock Related Party PaymentsForPurchaseOfCommonStockRelatedParty	-0	USD
CY2020	ceix	Payments For Purchase Of Common Stock Related Party PaymentsForPurchaseOfCommonStockRelatedParty	-0	USD
CY2019	ceix	Payments For Purchase Of Common Stock Related Party PaymentsForPurchaseOfCommonStockRelatedParty	369000	USD
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2368000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	9002000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	12492000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-30852000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-82440000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-256667000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	147356000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-29443000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-184642000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	50850000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80293000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	264935000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	198206000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	50850000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80293000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;"><b><i>Use of Estimates</i></b></p> <p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;text-indent:23pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;text-indent:23pt;">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, as well as various disclosures. Actual results could differ from those estimates. The most significant estimates included in the preparation of the consolidated financial statements are related to 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 the values of coal properties.</p> <p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;text-indent:23pt;"> </p>
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	48293000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	0	USD
CY2021	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	2425000	USD
CY2020	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	1911000	USD
CY2019	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	6686000	USD
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.82
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.96
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	45653
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1511420
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	195954
CY2021	us-gaap	Profit Loss ProfitLoss	34110000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-13214000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	93558000	USD
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-3459000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17557000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	34110000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-9755000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	76001000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	34404360
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26066971
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	26938339
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	984198
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	132769
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	35388558
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	26066971
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	27071108
CY2021	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.99
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.37
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.37
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.81
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	500000
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	34031374
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	25932618
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	27437844
CY2021	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	0
CY2020	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	7967690
CY2019	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	0
CY2021	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	-0
CY2020	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	-0
CY2019	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1717497
CY2021	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	448807
CY2020	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	131066
CY2019	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	212271
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	34480181
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	34031374
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	25932618
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:Times New Roman;font-size:10pt;text-align:justify;margin:0pt;"><b><i>Reclassifications</i></b></p> <p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p> <p style="font-family: "Times New Roman"; font-size: 10pt; text-align: justify; margin: 0pt; text-indent: 18pt;">Certain amounts in prior periods have been reclassified to conform with the report classifications of the current period, including the reclassification of the current portion of the Company's operating lease liability, previously included in Other Accrued Liabilities on the Consolidated Balance Sheets. These reclassifications had <em style="font: inherit;">no</em> effect on previously reported total assets, net income, stockholders' equity or cash flows from operating activities.</p> <p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"> </p>
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1261034000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	879462000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1375559000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1336000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	126886000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	53349000	USD
CY2021	ceix	Gain Loss On Sale Of Mining Rights GainLossOnSaleOfMiningRights	21756000	USD
CY2020	ceix	Gain Loss On Sale Of Mining Rights GainLossOnSaleOfMiningRights	39437000	USD
CY2019	ceix	Gain Loss On Sale Of Mining Rights GainLossOnSaleOfMiningRights	0	USD
CY2021	ceix	Royalty Income Nonoperated Coal RoyaltyIncomeNonoperatedCoal	8661000	USD
CY2020	ceix	Royalty Income Nonoperated Coal RoyaltyIncomeNonoperatedCoal	12032000	USD
CY2019	ceix	Royalty Income Nonoperated Coal RoyaltyIncomeNonoperatedCoal	22208000	USD
CY2021	us-gaap	Interest Income Other InterestIncomeOther	3287000	USD
CY2020	us-gaap	Interest Income Other InterestIncomeOther	1230000	USD
CY2019	us-gaap	Interest Income Other InterestIncomeOther	2937000	USD
CY2021	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	1095000	USD
CY2020	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	1314000	USD
CY2019	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	2517000	USD
CY2021	ceix	Purchased Coal Sales PurchasedCoalSales	0	USD
CY2020	ceix	Purchased Coal Sales PurchasedCoalSales	0	USD
CY2019	ceix	Purchased Coal Sales PurchasedCoalSales	12385000	USD
CY2021	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	0	USD
CY2020	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	44703000	USD
CY2019	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	9959000	USD
CY2021	ceix	Income Loss From Sale Of Contracts IncomeLossFromSaleOfContracts	0	USD
CY2020	ceix	Income Loss From Sale Of Contracts IncomeLossFromSaleOfContracts	17847000	USD
CY2019	ceix	Income Loss From Sale Of Contracts IncomeLossFromSaleOfContracts	0	USD
CY2021	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	3595000	USD
CY2020	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	10323000	USD
CY2019	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	3343000	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	38394000	USD
CY2021Q2	ceix	Stock And Debt Repurchase Program Authorized Amount StockAndDebtRepurchaseProgramAuthorizedAmount	320000000	USD
CY2021	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2019	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1717497
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.014	pure
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-10535000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.298	pure
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	0	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0	pure
CY2021Q4	ceix	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	135000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	13769000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-5933000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15905000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2145000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-2294000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4717000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	143000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	514000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1336000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	16057000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-7713000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	21958000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-16657000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	10936000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-9386000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1897000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	749000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8033000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-14760000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11685000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-17419000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1297000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3972000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4539000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	7436000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-1941000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	20600000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-642000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.018	pure
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1109000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.120	pure
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3125000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.032	pure
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	125000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.004	pure
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	406000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.044	pure
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-13141000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.134	pure
CY2021	ceix	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsAmount	1473000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	11419000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	17493000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	5203000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	5158000	USD
CY2021Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	4219000	USD
CY2020Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	6918000	USD
CY2021Q4	ceix	Deferred Tax Assets Tax Deferred Expense Compensation Benefits Longterm Disability DeferredTaxAssetsTaxDeferredExpenseCompensationBenefitsLongtermDisability	1931000	USD
CY2020Q4	ceix	Deferred Tax Assets Tax Deferred Expense Compensation Benefits Longterm Disability DeferredTaxAssetsTaxDeferredExpenseCompensationBenefitsLongtermDisability	2757000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	937000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	6134000	USD
CY2021	ceix	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent	0.042	pure
CY2020	ceix	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsAmount	0	USD
CY2020	ceix	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent	0	pure
CY2019	ceix	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Amount EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsAmount	0	USD
CY2019	ceix	Effective Income Tax Rate Reconciliation Uncertain Tax Positions Percent EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent	0	pure
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	3192000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.090	pure
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	1310000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.142	pure
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	1799000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.018	pure
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-544000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.015	pure
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1479000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.160	pure
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1400000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.014	pure
CY2021	ceix	Effective Income Tax Rate Reconciliation Tax Credit Refund Amount Total EffectiveIncomeTaxRateReconciliationTaxCreditRefundAmountTotal	-210000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.006	pure
CY2020	ceix	Effective Income Tax Rate Reconciliation Tax Credit Refund Amount Total EffectiveIncomeTaxRateReconciliationTaxCreditRefundAmountTotal	1150000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.124	pure
CY2019	ceix	Effective Income Tax Rate Reconciliation Tax Credit Refund Amount Total EffectiveIncomeTaxRateReconciliationTaxCreditRefundAmountTotal	-2536000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.026	pure
CY2021	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	-0	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0	pure
CY2020	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	-726000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.079	pure
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3687000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.038	pure
CY2021	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustments	642000	USD
CY2021	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments Percent EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustmentsPercent	0.018	pure
CY2020	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustments	1797000	USD
CY2020	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments Percent EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustmentsPercent	-0.194	pure
CY2019	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustments	-4565000	USD
CY2019	ceix	Effective Income Tax Rate Reconciliation State Rate Change And Prior Period Adjustments Percent EffectiveIncomeTaxRateReconciliationStateRateChangeAndPriorPeriodAdjustmentsPercent	-0.046	pure
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	360000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.010	pure
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	154000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.016	pure
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	208000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002	pure
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1297000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.037	pure
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3972000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.429	pure
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4539000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.046	pure
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	84130000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	101673000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	47681000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	60284000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	47180000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	56779000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	229842000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	57011000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	68821000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	937000	USD
CY2020Q4	ceix	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	11377000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	17271000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	9446000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	2077000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	5772000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4175000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	208607000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	301542000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	937000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2879000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	207670000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	298663000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	99811000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	35570000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	40064000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	172026000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	7270000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	10908000	USD
CY2021Q4	ceix	Deferred Tax Liabilities Compensation And Benefits Pensions DeferredTaxLiabilitiesCompensationAndBenefitsPensions	2739000	USD
CY2020Q4	ceix	Deferred Tax Liabilities Compensation And Benefits Pensions DeferredTaxLiabilitiesCompensationAndBenefitsPensions	-0	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	640000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	-0	USD
CY2021Q4	ceix	Deferred Tax Liabilities Operating Lease Rightofuse Asset DeferredTaxLiabilitiesOperatingLeaseRightofuseAsset	135000	USD
CY2020Q4	ceix	Deferred Tax Liabilities Operating Lease Rightofuse Asset DeferredTaxLiabilitiesOperatingLeaseRightofuseAsset	11338000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	150659000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	774000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2859000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3633000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	271952000	USD
CY2021	us-gaap	Accretion Expense AccretionExpense	18652000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2811000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	248769000	USD
CY2020	us-gaap	Accretion Expense AccretionExpense	17905000	USD
CY2021	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	18144000	USD
CY2020	us-gaap	Asset Retirement Obligation Cash Paid To Settle AssetRetirementObligationCashPaidToSettle	13529000	USD
CY2021	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	10334000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	9248000	USD
CY2021	ceix	Gain Loss On Disposition Of Degasification Wells GainLossOnDispositionOfDegasificationWells	-825000	USD
CY2020	ceix	Gain Loss On Disposition Of Degasification Wells GainLossOnDispositionOfDegasificationWells	-18311000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	238118000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	248769000	USD
CY2021	ceix	Gain Loss On Disposition Of Degasification Wells GainLossOnDispositionOfDegasificationWells	-825000	USD
CY2020	ceix	Gain Loss On Disposition Of Degasification Wells GainLossOnDispositionOfDegasificationWells	-18311000	USD
CY2021Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	12078000	USD
CY2020Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	7163000	USD
CY2021Q4	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	50798000	USD
CY2020Q4	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	49037000	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	62876000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	56200000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5250805000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5143696000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3272255000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3094634000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1978550000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2049062000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	80232000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	112334000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	34036000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	56761000	USD
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	27846000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	24066000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	15691000	USD
CY2021Q4	ceix	Accrued Subsidence Liability Current AccruedSubsidenceLiabilityCurrent	93871000	USD
CY2020Q4	ceix	Accrued Subsidence Liability Current AccruedSubsidenceLiabilityCurrent	89554000	USD
CY2021Q4	ceix	Accrued Derivative Liability Current AccruedDerivativeLiabilityCurrent	52204000	USD
CY2020Q4	ceix	Accrued Derivative Liability Current AccruedDerivativeLiabilityCurrent	0	USD
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	50146000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	27209000	USD
CY2021Q4	us-gaap	Interest Payable Current InterestPayableCurrent	9042000	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	6236000	USD
CY2021Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	5556000	USD
CY2020Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	7126000	USD
CY2021Q4	ceix	Accrued Equipment Obligations Current AccruedEquipmentObligationsCurrent	0	USD
CY2020Q4	ceix	Accrued Equipment Obligations Current AccruedEquipmentObligationsCurrent	6698000	USD
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	16415000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	17815000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	27400000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	20587000	USD
CY2021Q4	ceix	Liability Other Postretirement Defined Benefit Plan Current LiabilityOtherPostretirementDefinedBenefitPlanCurrent	23638000	USD
CY2020Q4	ceix	Liability Other Postretirement Defined Benefit Plan Current LiabilityOtherPostretirementDefinedBenefitPlanCurrent	26073000	USD
CY2021Q4	ceix	Employee Related Liabilities Medical And Disability Benefits Current EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsCurrent	12398000	USD
CY2020Q4	ceix	Employee Related Liabilities Medical And Disability Benefits Current EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsCurrent	12203000	USD
CY2021Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	10205000	USD
CY2020Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	9653000	USD
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	300875000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	223154000	USD
CY2021Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	9111000	USD
CY2020Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	9921000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	604641000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	600589000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	36589000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	33731000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	568052000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	566858000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	36589000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	12810000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	234847000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	252402000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	398000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	77393000	USD
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	614439000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	657000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	21352000	USD
CY2021	ceix	Proceeds From Reimbursements From Qualified Expenses ProceedsFromReimbursementsFromQualifiedExpenses	28867000	USD
CY2021Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	517000	USD
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	2834000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	1721000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	596000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-2004000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	674000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-2220000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-1587000	USD
CY2021	us-gaap	Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Income Estimated Net Amount To Be Transferred DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred	428000	USD
CY2021	ceix	Operating Lease Cost Fixed OperatingLeaseCostFixed	17695000	USD
CY2020	ceix	Operating Lease Cost Fixed OperatingLeaseCostFixed	24359000	USD
CY2021	ceix	Operating Lease Cost Variable OperatingLeaseCostVariable	6884000	USD
CY2020	ceix	Operating Lease Cost Variable OperatingLeaseCostVariable	3835000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	24579000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	28194000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	25330000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	24293000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21956000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	53436000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	15274000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	35655000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	21956000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	55896000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y11M23D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y7M24D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0678	pure
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0684	pure
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	27846000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	24066000	USD
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	3501000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2375000	USD
CY2021	ceix	Finance Lease Cost FinanceLeaseCost	31347000	USD
CY2020	ceix	Finance Lease Cost FinanceLeaseCost	26441000	USD
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y10D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y8M4D
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0621	pure
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0579	pure
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	22906000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	7929000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	22167000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5585000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	5190000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4843000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	366000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3322000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	19000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3322000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4426000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	277000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	50648000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	25278000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	3307000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3322000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	47341000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	21956000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	27988000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	778868000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	27734000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	778618000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	0	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	740978000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4597000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	733966000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	740978000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	11504000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	11395000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	11371000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	11443000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	11525000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	58808000	USD
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.06	pure
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	9378000	USD
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	9117000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8114000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	10737000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2600000
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1657000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2871000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2856000	USD
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	2492000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P0Y11M4D
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	122715000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	19011000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	42200000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	4424000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	54401000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	62997000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	73574000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3199000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1476000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	40139000	USD
CY2021Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	108696000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	104099000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	118289000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1086000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	53290000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	210760000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	207097000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	0	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	-0	USD
CY2021	ceix	Payment Under Guarantees PaymentUnderGuarantees	1090000	USD
CY2021Q4	ceix	Guarantees Maximum Exposure GuaranteesMaximumExposure	1000000	USD
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	pure
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1261034000	USD
CY2021	ceix	Adjusted Ebitda AdjustedEBITDA	378246000	USD
CY2021Q4	us-gaap	Assets Assets	2573517000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	224583000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	132752000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	879462000	USD
CY2020	ceix	Adjusted Ebitda AdjustedEBITDA	261523000	USD
CY2020Q4	us-gaap	Assets Assets	2523366000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	210760000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	86004000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1375559000	USD
CY2019	ceix	Adjusted Ebitda AdjustedEBITDA	405936000	USD
CY2019Q4	us-gaap	Assets Assets	2693802000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	207097000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	169739000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1261034000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	879462000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1375559000	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-52204000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	0	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	0	USD
CY2021	us-gaap	Other Income OtherIncome	38394000	USD
CY2020	us-gaap	Other Income OtherIncome	126886000	USD
CY2019	us-gaap	Other Income OtherIncome	53349000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	11723000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	15295000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	1995000	USD
CY2021	us-gaap	Revenues Revenues	1258947000	USD
CY2020	us-gaap	Revenues Revenues	1021643000	USD
CY2019	us-gaap	Revenues Revenues	1430903000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	35407000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-9242000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	98097000	USD
CY2021	us-gaap	Interest Expense InterestExpense	63342000	USD
CY2020	us-gaap	Interest Expense InterestExpense	61186000	USD
CY2019	us-gaap	Interest Expense InterestExpense	66464000	USD
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	657000	USD
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	21352000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-24455000	USD
CY2021	us-gaap	Interest Income Other InterestIncomeOther	3287000	USD
CY2020	us-gaap	Interest Income Other InterestIncomeOther	1230000	USD
CY2019	us-gaap	Interest Income Other InterestIncomeOther	2937000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	224583000	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-52204000	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-0	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	-0	USD
CY2021	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-22000	USD
CY2020	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-0	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-0	USD
CY2021	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9822000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	6632000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	11579000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	12760000	USD
CY2021	ceix	Adjusted Ebitda AdjustedEBITDA	378246000	USD
CY2020	ceix	Adjusted Ebitda AdjustedEBITDA	261523000	USD
CY2019	ceix	Adjusted Ebitda AdjustedEBITDA	405936000	USD
CY2020Q4	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	7967690
CY2020	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	13424000	USD
CY2019	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	11528000	USD

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$CEIX
CONSOL Energy Inc. Stock $ceix

2021 Q4 Form 10-K Financial Statement

#000143774922003140 Filed on February 11, 2022

Income Statement

Balance Sheet

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$CEIX CONSOL Energy Inc. Stock $ceix

2021 Q4 Form 10-K Financial Statement

#000143774922003140 Filed on February 11, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CEIX
CONSOL Energy Inc. Stock $ceix