$BTU
PEABODY ENERGY CORP Stock $btu

$btu Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-Q Financial Statement

#000106472820000033 Filed on November 09, 2020

Income Statement

Concept	2020 Q4	2020 Q3	2019 Q3
Revenue	$737.2M	$671.0M	$1.106B
YoY Change	-34.03%	-39.35%	-21.68%
Cost Of Revenue	$638.2M	$550.9M	$906.2M
YoY Change	-22.53%	-39.21%	-13.52%
Gross Profit	$99.00M	$120.1M	$200.2M
YoY Change	-66.28%	-40.01%	-45.11%
Gross Profit Margin	13.43%	17.9%	18.09%
Selling, General & Admin	$21.90M	$27.20M	$32.20M
YoY Change	-57.06%	-15.53%	-16.58%
% of Gross Profit	22.12%	22.65%	16.08%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$79.50M	$72.20M	$141.5M
YoY Change	-34.62%	-48.98%	-16.57%
% of Gross Profit	80.3%	60.12%	70.68%
Operating Expenses	$101.4M	$27.20M	$32.20M
YoY Change	-41.25%	-15.53%	-16.58%
Operating Profit	-$2.400M	-$15.80M	-$36.80M
YoY Change	-98.55%	-57.07%	-128.24%
Interest Expense	-$69.60M	$34.90M	$35.40M
YoY Change	-289.13%	-1.41%	-7.33%
% of Operating Profit
Other Income/Expense, Net	$28.20M	-$15.80M	-$4.900M
YoY Change	-139.06%	222.45%	8.89%
Pretax Income	-$115.1M	-$64.90M	-$70.10M
YoY Change	-57.4%	-7.42%	-171.75%
Income Tax	$5.300M	-$100.0K	$4.200M
% Of Pretax Income
Net Earnings	-$129.2M	-$67.20M	-$82.80M
YoY Change	-55.42%	-18.84%	-215.8%
Net Earnings / Revenue	-17.53%	-10.01%	-7.48%
Basic Earnings Per Share		-$0.69	-$0.81
Diluted Earnings Per Share	-$1.318M	-$0.69	-$0.81
COMMON SHARES
Basic Shares Outstanding	97.80M shares	97.90M shares	102.2M shares
Diluted Shares Outstanding			102.2M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$709.0M	$815.0M	$759.0M
YoY Change	-3.14%	7.38%	-44.64%
Cash & Equivalents	$709.2M	$814.6M	$759.1M
Short-Term Investments
Other Short-Term Assets	$204.7M	$209.2M	$218.4M
YoY Change	-7.25%	-4.21%	2.06%
Inventory	$261.6M	$319.7M	$294.8M
Prepaid Expenses
Receivables	$244.8M	$192.9M	$293.4M
Other Receivables	$63.90M	$49.50M	$36.30M
Total Short-Term Assets	$1.420B	$1.536B	$1.566B
YoY Change	-12.0%	-1.87%	-32.13%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.051B	$3.197B	$4.899B
YoY Change	-34.79%	-34.74%	0.97%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$24.60M	$54.70M	$29.30M
YoY Change	-56.77%	86.69%	-89.38%
Other Assets	$140.9M	$122.4M	$193.5M
YoY Change	1.29%	-36.74%	125.0%
Total Long-Term Assets	$3.247B	$3.325B	$5.227B
YoY Change	-34.13%	-36.4%	0.25%
TOTAL ASSETS
Total Short-Term Assets	$1.420B	$1.536B	$1.566B
Total Long-Term Assets	$3.247B	$3.325B	$5.227B
Total Assets	$4.667B	$4.861B	$6.793B
YoY Change	-28.67%	-28.44%	-9.69%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$581.0M	$664.0M	$796.0M
YoY Change	-28.27%	-16.58%
Accrued Expenses	$40.00M	$54.00M	$28.00M
YoY Change	33.33%	92.86%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$45.00M	$1.600B	$23.00M
YoY Change	150.0%	6856.52%	-45.24%
Total Short-Term Liabilities	$790.6M	$2.374B	$900.9M
YoY Change	-18.94%	163.56%	-19.85%
LONG-TERM LIABILITIES
Long-Term Debt	$1.503B	$0.00	$1.329B
YoY Change	16.24%	-100.0%	-0.37%
Other Long-Term Liabilities	$251.5M	$258.9M	$300.0M
YoY Change	-8.01%	-13.7%	-83.04%
Total Long-Term Liabilities	$251.5M	$258.9M	$300.0M
YoY Change	-8.01%	-13.7%	-90.33%
TOTAL LIABILITIES
Total Short-Term Liabilities	$790.6M	$2.374B	$900.9M
Total Long-Term Liabilities	$251.5M	$258.9M	$300.0M
Total Liabilities	$3.686B	$3.760B	$3.808B
YoY Change	-4.77%	-1.24%	-11.04%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.273B	-$1.144B
YoY Change	-313.28%
Common Stock	$3.365B	$3.361B
YoY Change	0.4%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.369B	$1.369B
YoY Change	0.12%
Treasury Stock Shares	42.70M shares	42.70M shares	40.30M shares
Shareholders Equity	$929.6M	$1.051B	$2.940B
YoY Change
Total Liabilities & Shareholders Equity	$4.667B	$4.861B	$6.793B
YoY Change	-28.67%	-28.44%	-9.69%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2019 Q3
OPERATING ACTIVITIES
Net Income	-$129.2M	-$67.20M	-$82.80M
YoY Change	-55.42%	-18.84%	-215.8%
Depreciation, Depletion And Amortization	$79.50M	$72.20M	$141.5M
YoY Change	-34.62%	-48.98%	-16.57%
Cash From Operating Activities	$22.40M	$21.00M	$175.6M
YoY Change	-82.05%	-88.04%	-49.16%
INVESTING ACTIVITIES
Capital Expenditures	-$59.50M	-$46.10M	-$86.00M
YoY Change	-42.01%	-46.4%	41.22%
Acquisitions
YoY Change
Other Investing Activities	$12.20M	$2.300M	$2.400M
YoY Change	-209.91%	-4.17%	-82.09%
Cash From Investing Activities	-$47.30M	-$43.80M	-$83.60M
YoY Change	-58.4%	-47.61%	76.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-80.50M	-11.10M	-179.7M
YoY Change	-11.83%	-93.82%	-51.87%
NET CHANGE
Cash From Operating Activities	22.40M	21.00M	175.6M
Cash From Investing Activities	-47.30M	-43.80M	-83.60M
Cash From Financing Activities	-80.50M	-11.10M	-179.7M
Net Change In Cash	-105.4M	-33.90M	-87.70M
YoY Change	31.42%	-61.35%	16.16%
FREE CASH FLOW
Cash From Operating Activities	$22.40M	$21.00M	$175.6M
Capital Expenditures	-$59.50M	-$46.10M	-$86.00M
Free Cash Flow	$81.90M	$67.10M	$261.6M
YoY Change	-63.98%	-74.35%	-35.61%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001064728
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-16463
	dei	Entity Registrant Name EntityRegistrantName	PEABODY ENERGY CORP
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-4004153
	dei	Entity Address Address Line1 EntityAddressAddressLine1	701 Market Street,
	dei	Entity Address City Or Town EntityAddressCityOrTown	St. Louis,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	MO
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	63101-1826
	dei	City Area Code CityAreaCode	314
	dei	Local Phone Number LocalPhoneNumber	342-3400
	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
	dei	Trading Symbol TradingSymbol	BTU
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
	dei	Entity Bankruptcy Proceedings Reporting Current EntityBankruptcyProceedingsReportingCurrent	true
CY2020Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	97800000	shares
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	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-1576500000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	83000000.0	USD
CY2020Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	100000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4700000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-5100000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12800000	USD
CY2020Q3	btu	Comprehensive Income Loss Attributableto Common Stockholders ComprehensiveIncomeLossAttributabletoCommonStockholders	107600000	USD
CY2019Q3	btu	Comprehensive Income Loss Attributableto Common Stockholders ComprehensiveIncomeLossAttributabletoCommonStockholders	-86300000	USD
	btu	Comprehensive Income Loss Attributableto Common Stockholders ComprehensiveIncomeLossAttributabletoCommonStockholders	-1571400000	USD
	btu	Comprehensive Income Loss Attributableto Common Stockholders ComprehensiveIncomeLossAttributabletoCommonStockholders	70200000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	814600000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	732200000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	0.0	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	28300000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	0.0	USD
CY2020Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	192900000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	329500000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	319700000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	331500000	USD
CY2020Q3	us-gaap	Other Assets Current OtherAssetsCurrent	209200000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	220700000	USD
CY2020Q3	us-gaap	Assets Current AssetsCurrent	1536400000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	1613900000	USD
CY2020Q3	btu	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	3152300000	USD
CY2019Q4	btu	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	4679100000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	44900000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	82400000	USD
CY2020Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	122400000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	139100000	USD
CY2020Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	4900000	USD
CY2020Q3	us-gaap	Assets Assets	4860900000	USD
CY2019Q4	us-gaap	Assets Assets	6542800000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1600100000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	18300000	USD
CY2020Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	774300000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	957000000.0	USD
CY2020Q3	us-gaap	Liabilities Current LiabilitiesCurrent	2374400000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	975300000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	0	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1292500000	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	28900000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	28800000	USD
CY2020Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	671200000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	654100000	USD
CY2020Q3	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	419600000	USD
CY2019Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	593400000	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	7100000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	52800000	USD
CY2020Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	258900000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	273400000	USD
CY2020Q3	us-gaap	Liabilities Liabilities	3760100000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	3870300000	USD
CY2020Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3361000000.0	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3351100000	USD
CY2020Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	42700000	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	42300000	shares
CY2020Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1368900000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1367300000	USD
CY2020Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1144100000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	597000000.0	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	201300000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	31600000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1050700000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2613800000	USD
CY2020Q3	us-gaap	Minority Interest MinorityInterest	50100000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	58700000	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1100800000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2672500000	USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4860900000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6542800000	USD
	us-gaap	Profit Loss ProfitLoss	-1746200000	USD
	us-gaap	Profit Loss ProfitLoss	91300000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-6800000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-10600000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-1739400000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	101900000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	266500000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	479400000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-12000000.0	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-11400000	USD
	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	-20700000	USD
	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	0	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	100000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-400000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	9900000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	30200000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1418100000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	20000000.0	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	10400000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	2800000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-25700000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-7500000	USD
	btu	Provisionforequipmentloss Provisionforequipmentloss	0	USD
	btu	Provisionforequipmentloss Provisionforequipmentloss	24700000	USD
	btu	Monetization Of Foreign Currency Hedge Positions MonetizationOfForeignCurrencyHedgePositions	-5200000	USD
	btu	Monetization Of Foreign Currency Hedge Positions MonetizationOfForeignCurrencyHedgePositions	3500000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-136600000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-118900000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	8800000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	15100000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-300000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	27300000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-136300000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-115100000	USD
	us-gaap	Increase Decrease In Asset Retirement Obligations IncreaseDecreaseInAssetRetirementObligations	12200000	USD
	us-gaap	Increase Decrease In Asset Retirement Obligations IncreaseDecreaseInAssetRetirementObligations	9100000	USD
	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	-1300000	USD
	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	500000	USD
	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-6100000	USD
	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-37800000	USD
	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	300000	USD
	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-16900000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-4600000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-13900000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-9700000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	577800000	USD
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-22400000	USD
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-25200000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-32100000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	552600000	USD
	btu	Increase Decreasein Property Plantand Equipment Investing Activities IncreaseDecreaseinPropertyPlantandEquipmentInvestingActivities	131900000	USD
	btu	Increase Decreasein Property Plantand Equipment Investing Activities IncreaseDecreaseinPropertyPlantandEquipmentInvestingActivities	182800000	USD
	btu	Increase Deceasein Accrued Liabilities Relatedto Capital Expenditures Investing Activities IncreaseDeceaseinAccruedLiabilitiesRelatedtoCapitalExpendituresInvestingActivities	14900000	USD
	btu	Increase Deceasein Accrued Liabilities Relatedto Capital Expenditures Investing Activities IncreaseDeceaseinAccruedLiabilitiesRelatedtoCapitalExpendituresInvestingActivities	5600000	USD
	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	0	USD
	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	23200000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	15400000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	27600000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2400000	USD
	btu	Contributions To Joint Ventures ContributionsToJointVentures	275200000	USD
	btu	Contributions To Joint Ventures ContributionsToJointVentures	326400000	USD
	btu	Distributions From Joint Ventures DistributionsFromJointVentures	271000000.0	USD
	btu	Distributions From Joint Ventures DistributionsFromJointVentures	316700000	USD
	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-23100000	USD
	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-12500000	USD
	us-gaap	Increase Decrease In Due From Related Parties IncreaseDecreaseInDueFromRelatedParties	0	USD
	us-gaap	Increase Decrease In Due From Related Parties IncreaseDecreaseInDueFromRelatedParties	-14700000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	700000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	100000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-159400000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-147600000	USD
	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	360000000.0	USD
	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	0	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	81000000.0	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	23900000	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	6400000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	300200000	USD
	btu	Payments For Repurchase Of Common Stock Relinquished For Tax Withholding PaymentsForRepurchaseOfCommonStockRelinquishedForTaxWithholding	1600000	USD
	btu	Payments For Repurchase Of Common Stock Relinquished For Tax Withholding PaymentsForRepurchaseOfCommonStockRelinquishedForTaxWithholding	12300000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	243900000	USD
	btu	Minority Interest Increase From Contributions To Noncontrolling Interest Holders MinorityInterestIncreaseFromContributionsToNoncontrollingInterestHolders	3500000	USD
	btu	Minority Interest Increase From Contributions To Noncontrolling Interest Holders MinorityInterestIncreaseFromContributionsToNoncontrollingInterestHolders	23400000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	100000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	273900000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-610000000.0	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	82400000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-205000000.0	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	732200000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1017400000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	814600000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	812400000	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1100800000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2985000000.0	USD
CY2020Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1100800000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2985000000.0	USD
	btu	Percentage Of Decline Of Coal Fueled Generation PercentageOfDeclineOfCoalFueledGeneration	0.24
	btu	Percentage Of Coal Fueled Generation Out Of Overall Generation Mix PercentageOfCoalFueledGenerationOutOfOverallGenerationMix	0.19
	btu	Increase Decrease In Income Loss From Continuing Operations Net Of Tax Including Portion Attributable To Noncontrolling Interest IncreaseDecreaseInIncomeLossFromContinuingOperationsNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-1841300000	USD
	btu	Increase Decrease In Adjusted Ebitda IncreaseDecreaseInAdjustedEBITDA	-487700000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	814600000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	732200000	USD
CY2020Q3	us-gaap	Accounts Receivable From Securitization AccountsReceivableFromSecuritization	40400000	USD
CY2019Q4	us-gaap	Accounts Receivable From Securitization AccountsReceivableFromSecuritization	45000000.0	USD
CY2020Q3	btu	Available Liquidity Amount AvailableLiquidityAmount	860100000	USD
CY2019Q4	btu	Available Liquidity Amount AvailableLiquidityAmount	1275800000	USD
	btu	Proceeds From Credit Facility And Accounts Receivable Securitization ProceedsFromCreditFacilityAndAccountsReceivableSecuritization	360000000.0	USD
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	70000000.0	USD
	btu	Letters Of Credit Issued LettersOfCreditIssued	134200000	USD
CY2020Q3	btu	Financial Instrument Surety Bonds Amount FinancialInstrumentSuretyBondsAmount	1628700000	USD
CY2020Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	334800000	USD
CY2020Q3	us-gaap	Revenues Revenues	671000000.0	USD
CY2019Q3	us-gaap	Revenues Revenues	1106400000	USD
	us-gaap	Revenues Revenues	2143900000	USD
	us-gaap	Revenues Revenues	3506000000.0	USD
CY2020Q3	us-gaap	Revenues Revenues	671000000.0	USD
CY2019Q3	us-gaap	Revenues Revenues	1106400000	USD
	us-gaap	Revenues Revenues	2143900000	USD
	us-gaap	Revenues Revenues	3506000000.0	USD
CY2020Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3800000000	USD
CY2020Q3	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.43
CY2020Q3	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2020Q3	us-gaap	Receivables Net Current ReceivablesNetCurrent	143400000	USD
CY2019Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	283100000	USD
CY2020Q3	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	49500000	USD
CY2019Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	46400000	USD
CY2020Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	192900000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	329500000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0	USD
CY2020Q3	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0	USD
CY2019Q3	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-100000	USD
CY2020Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-2300000	USD
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-3800000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-6800000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-10600000	USD
CY2020Q3	btu	Numberof Retirees NumberofRetirees	0	retiree
CY2020Q3	btu	Estimated Fund Obligation EstimatedFundObligation	40000000	USD
CY2019Q3	btu	Amountcontributedtothe Combined Benefit Fund AmountcontributedtotheCombinedBenefitFund	400000	USD
CY2020Q3	btu	Amountcontributedtothe Combined Benefit Fund AmountcontributedtotheCombinedBenefitFund	400000	USD
	btu	Amountcontributedtothe Combined Benefit Fund AmountcontributedtotheCombinedBenefitFund	1200000	USD
	btu	Amountcontributedtothe Combined Benefit Fund AmountcontributedtotheCombinedBenefitFund	1400000	USD
CY2020Q3	btu	Combined Benefit Fund Liability CombinedBenefitFundLiability	14400000	USD
CY2019Q4	btu	Combined Benefit Fund Liability CombinedBenefitFundLiability	15200000	USD
CY2020Q3	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	108000000.0	USD
CY2019Q4	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	116300000	USD
CY2020Q3	btu	Raw Coal RawCoal	73500000	USD
CY2019Q4	btu	Raw Coal RawCoal	85100000	USD
CY2020Q3	btu	Saleable Coal SaleableCoal	138200000	USD
CY2019Q4	btu	Saleable Coal SaleableCoal	130100000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	319700000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	331500000	USD
CY2020Q3	us-gaap	Equity Method Investments EquityMethodInvestments	54700000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	56900000	USD
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	The Company’s policy is to independently evaluate each customer’s creditworthiness prior to entering into transactions and to regularly monitor the credit extended. If the Company engages in a transaction with a counterparty that does not meet its credit standards, the Company seeks to protect its position by requiring the counterparty to provide an appropriate credit enhancement. Also, when appropriate (as determined by its credit management function), the Company has taken steps to reduce its exposure to customers or counterparties whose credit has deteriorated and who may pose a higher risk of failure to perform under their contractual obligations. These steps include obtaining letters of credit or cash collateral (margin), requiring prepayments for shipments or the creation of customer trust accounts held for the Company’s benefit to serve as collateral in the event of a failure to pay or perform. To reduce its credit exposure related to trading and brokerage activities, the Company seeks to enter into netting agreements with counterparties that permit the Company to offset asset and liability positions with such counterparties and, to the extent required, the Company will post or receive margin amounts associated with exchange-cleared and certain OTC positions.
CY2020Q3	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	100000	USD
CY2019Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	100000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	8800000	USD
CY2020Q3	btu	Finite Lived Intangible Liabilities FiniteLivedIntangibleLiabilities	51500000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	42700000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	8800000	USD
CY2020Q3	btu	Finite Lived Intangible Liabilities FiniteLivedIntangibleLiabilities	51500000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	42700000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	20700000	USD
CY2019Q4	btu	Finite Lived Intangible Liabilities FiniteLivedIntangibleLiabilities	61400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	40700000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	20700000	USD
CY2019Q4	btu	Finite Lived Intangible Liabilities FiniteLivedIntangibleLiabilities	61400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	40700000	USD
CY2020Q3	btu	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	1252500000	USD
CY2019Q4	btu	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	1409800000	USD
CY2020Q3	btu	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	3152300000	USD
CY2019Q4	btu	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	4679100000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1418100000	USD
CY2020Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	20000000.0	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	20000000.0	USD
CY2020Q3	btu	Atriskassets Atriskassets	1100000000	USD
CY2020Q3	btu	Lease Obligation Assumed Amount Recoverablefrom Third Parties LeaseObligationAssumedAmountRecoverablefromThirdParties	0	USD
CY2020Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	6300000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	9900000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	23300000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	33900000	USD
CY2020Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	10200000	USD
CY2019Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	15800000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	31700000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	34700000	USD
CY2020Q3	us-gaap	Variable Lease Cost VariableLeaseCost	1100000	USD
CY2019Q3	us-gaap	Variable Lease Cost VariableLeaseCost	2000000.0	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	3700000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	16600000	USD
CY2020Q3	btu	Sublease Expense Income SubleaseExpenseIncome	0	USD
CY2019Q3	btu	Sublease Expense Income SubleaseExpenseIncome	-1000000.0	USD
	btu	Sublease Expense Income SubleaseExpenseIncome	0	USD
	btu	Sublease Expense Income SubleaseExpenseIncome	-1900000	USD
CY2020Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	17600000	USD
CY2019Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	26700000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	58700000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	83300000	USD
CY2020Q3	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	800000	USD
CY2019Q3	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	3400000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	5200000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	12000000.0	USD
CY2020Q3	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	200000	USD
CY2019Q3	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	300000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	500000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1200000	USD
CY2020Q3	btu	Finance Lease Cost FinanceLeaseCost	1000000.0	USD
CY2019Q3	btu	Finance Lease Cost FinanceLeaseCost	3700000	USD
	btu	Finance Lease Cost FinanceLeaseCost	5700000	USD
	btu	Finance Lease Cost FinanceLeaseCost	13200000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	44900000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	82400000	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	54400000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	29600000	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	7100000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	52800000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	61500000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	82400000	USD
CY2020Q3	btu	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	24600000	USD
CY2019Q4	btu	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	89600000	USD
CY2020Q3	btu	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	20700000	USD
CY2019Q4	btu	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	45900000	USD
CY2020Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	3900000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	43700000	USD
CY2020Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	8000000.0	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	14300000	USD
CY2020Q3	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	0	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	900000	USD
CY2020Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	8000000.0	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	15200000	USD
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y6M
CY2020Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P16Y3M18D
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.074
CY2020Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.062
CY2020Q3	btu	Operatingcashflowsforoperatingleases Operatingcashflowsforoperatingleases	6800000	USD
CY2019Q3	btu	Operatingcashflowsforoperatingleases Operatingcashflowsforoperatingleases	8400000	USD
	btu	Operatingcashflowsforoperatingleases Operatingcashflowsforoperatingleases	26400000	USD
	btu	Operatingcashflowsforoperatingleases Operatingcashflowsforoperatingleases	41800000	USD
CY2020Q3	btu	Operatingcashflowsforfinanceleases Operatingcashflowsforfinanceleases	100000	USD
CY2019Q3	btu	Operatingcashflowsforfinanceleases Operatingcashflowsforfinanceleases	300000	USD
	btu	Operatingcashflowsforfinanceleases Operatingcashflowsforfinanceleases	500000	USD
	btu	Operatingcashflowsforfinanceleases Operatingcashflowsforfinanceleases	1200000	USD
CY2020Q3	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	200000	USD
CY2019Q3	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	5600000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	8100000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	24000000.0	USD
CY2020Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	200000	USD
CY2019Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	3400000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2300000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	9700000	USD
CY2020Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	500000	USD
CY2019Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	300000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	1500000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	400000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	9000000.0	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	400000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	23300000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1400000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	14000000.0	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1200000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	12100000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	700000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4800000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	700000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	7200000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	8200000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	70400000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	12600000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	8900000	USD
CY2020Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	4600000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	61500000	USD
CY2020Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	8000000.0	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-100000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4200000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2700000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26000000.0	USD
	btu	Accelerated Tax Refund Cares Act AcceleratedTaxRefundCARESAct	24000000	USD
CY2020Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	8000000.0	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	15200000	USD
CY2020Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	46100000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	55500000	USD
CY2020Q3	btu	Interestinunincorporatedjointventureproject Interestinunincorporatedjointventureproject	0.50
	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	45000000	USD
CY2020Q3	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1600100000	USD
CY2019Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1310800000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1600100000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	18300000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	0	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1292500000	USD
CY2020Q3	us-gaap	Restructuring Charges RestructuringCharges	8100000	USD
CY2019Q3	us-gaap	Restructuring Charges RestructuringCharges	700000	USD
	us-gaap	Restructuring Charges RestructuringCharges	31100000	USD
	us-gaap	Restructuring Charges RestructuringCharges	1300000	USD
	btu	Provisionforequipmentloss Provisionforequipmentloss	0	USD
CY2020Q3	btu	Provisionforequipmentloss Provisionforequipmentloss	0	USD
CY2020Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2100000	shares
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1700000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2300000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	600000	shares
CY2020Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-64800000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-74300000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-1739400000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	101900000	USD
CY2020Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	100000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4700000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-5100000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12800000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-64900000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-79000000.0	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-1734300000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	89100000	USD
CY2020Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-2300000	USD
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-3800000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-6800000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-10600000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-67200000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-82800000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-1741100000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	78500000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	97900000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	102200000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	97600000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	105900000	shares
CY2020Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2019Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1500000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	97900000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	102200000	shares
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	97600000	shares
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	107400000	shares
CY2020Q3	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.66
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.77
	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-17.76
	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.84
CY2020Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	-0.03
CY2019Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	-0.04
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	-0.07
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	-0.10
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.69
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.81
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-17.83
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.74
CY2020Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.66
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.77
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-17.76
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.83
CY2020Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.03
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.04
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.07
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.10
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.69
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.81
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-17.83
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2020Q3	btu	Financial Instrument Surety Bonds Amount FinancialInstrumentSuretyBondsAmount	1628700000	USD
CY2020Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	334800000	USD
CY2020Q3	btu	Financial Instrument Surety Bonds Amount To Support Asset Retirement Obligations FinancialInstrumentSuretyBondsAmountToSupportAssetRetirementObligations	1439800000	USD
CY2020Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	762800000	USD
CY2020Q3	btu	Letters Of Credit Issued To Support Asset Retirement Obligations LettersOfCreditIssuedToSupportAssetRetirementObligations	235900000	USD
CY2019Q4	btu	Cash Collateral Or Restricted Cash Requirement CashCollateralOrRestrictedCashRequirement	0	USD
CY2020Q3	btu	Cash Collateral Or Restricted Cash Requirement CashCollateralOrRestrictedCashRequirement	0	USD
CY2020Q3	btu	Take Or Pay Obligations Total TakeOrPayObligationsTotal	1200000000	USD
CY2020Q3	btu	Take Or Pay Obligations Due In One Year TakeOrPayObligationsDueInOneYear	91000000	USD
CY2020Q3	us-gaap	Revenues Revenues	671000000.0	USD
CY2019Q3	us-gaap	Revenues Revenues	1106400000	USD
	us-gaap	Revenues Revenues	2143900000	USD
	us-gaap	Revenues Revenues	3506000000.0	USD
CY2020Q3	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	95400000	USD
CY2019Q3	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	159200000	USD
	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	155600000	USD
	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	643300000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-64800000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-74300000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-1739400000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	101900000	USD
CY2020Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	72200000	USD
CY2019Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	141500000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	266500000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	479400000	USD
CY2020Q3	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	14300000	USD
CY2019Q3	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	15500000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	46000000.0	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	44600000	USD
CY2020Q3	us-gaap	Restructuring Charges RestructuringCharges	8100000	USD
CY2019Q3	us-gaap	Restructuring Charges RestructuringCharges	700000	USD
	us-gaap	Restructuring Charges RestructuringCharges	31100000	USD
	us-gaap	Restructuring Charges RestructuringCharges	1300000	USD
CY2020Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	6000000.0	USD
CY2019Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	8200000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	23100000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9800000	USD
CY2020Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	20000000.0	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1418100000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	20000000.0	USD
CY2020Q3	btu	Provisionforequipmentloss Provisionforequipmentloss	0	USD
CY2019Q3	btu	Provisionforequipmentloss Provisionforequipmentloss	0	USD
	btu	Provisionforequipmentloss Provisionforequipmentloss	0	USD
	btu	Provisionforequipmentloss Provisionforequipmentloss	24700000	USD
CY2020Q3	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	0	USD
CY2019Q3	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	0	USD
	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	0	USD
	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	91100000	USD
CY2020Q3	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-500000	USD
CY2019Q3	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	0	USD
	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-1600000	USD
	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	300000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	34900000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	35400000	USD
	us-gaap	Interest Expense InterestExpense	102300000	USD
	us-gaap	Interest Expense InterestExpense	107200000	USD
CY2020Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	1600000	USD
CY2019Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	7000000.0	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	7100000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	22500000	USD
CY2020Q3	btu	Defined Benefit Plan Net Mark To Market Adjustment On Actuarially Determined Liabilities DefinedBenefitPlanNetMarkToMarketAdjustmentOnActuariallyDeterminedLiabilities	13000000.0	USD
CY2019Q3	btu	Defined Benefit Plan Net Mark To Market Adjustment On Actuarially Determined Liabilities DefinedBenefitPlanNetMarkToMarketAdjustmentOnActuariallyDeterminedLiabilities	0	USD
	btu	Defined Benefit Plan Net Mark To Market Adjustment On Actuarially Determined Liabilities DefinedBenefitPlanNetMarkToMarketAdjustmentOnActuariallyDeterminedLiabilities	13000000.0	USD
	btu	Defined Benefit Plan Net Mark To Market Adjustment On Actuarially Determined Liabilities DefinedBenefitPlanNetMarkToMarketAdjustmentOnActuariallyDeterminedLiabilities	0	USD
CY2020Q3	btu	Derivative Instruments Not Designatedas Hedging Instruments Unrealized Gain Loss Net DerivativeInstrumentsNotDesignatedasHedgingInstrumentsUnrealizedGainLossNet	-16100000	USD
CY2019Q3	btu	Derivative Instruments Not Designatedas Hedging Instruments Unrealized Gain Loss Net DerivativeInstrumentsNotDesignatedasHedgingInstrumentsUnrealizedGainLossNet	-18000000.0	USD
	btu	Derivative Instruments Not Designatedas Hedging Instruments Unrealized Gain Loss Net DerivativeInstrumentsNotDesignatedasHedgingInstrumentsUnrealizedGainLossNet	-11300000	USD
	btu	Derivative Instruments Not Designatedas Hedging Instruments Unrealized Gain Loss Net DerivativeInstrumentsNotDesignatedasHedgingInstrumentsUnrealizedGainLossNet	44200000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Commodity Contracts GainLossOnSaleOfCommodityContracts	700000	USD
CY2019Q3	us-gaap	Gain Loss On Sale Of Commodity Contracts GainLossOnSaleOfCommodityContracts	300000	USD
	us-gaap	Gain Loss On Sale Of Commodity Contracts GainLossOnSaleOfCommodityContracts	3600000	USD
	us-gaap	Gain Loss On Sale Of Commodity Contracts GainLossOnSaleOfCommodityContracts	200000	USD
CY2020Q3	btu	Fresh Start Adjustment Fair Value Adjustment FreshStartAdjustmentFairValueAdjustment	1500000	USD
CY2019Q3	btu	Fresh Start Adjustment Fair Value Adjustment FreshStartAdjustmentFairValueAdjustment	2700000	USD
	btu	Fresh Start Adjustment Fair Value Adjustment FreshStartAdjustmentFairValueAdjustment	6800000	USD
	btu	Fresh Start Adjustment Fair Value Adjustment FreshStartAdjustmentFairValueAdjustment	13900000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-100000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4200000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2700000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26000000.0	USD
CY2020Q3	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	95400000	USD
CY2019Q3	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	159200000	USD
	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	155600000	USD
	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	643300000	USD
	btu	Provisionforequipmentloss Provisionforequipmentloss	24700000	USD
CY2018	btu	Provisionforequipmentloss Provisionforequipmentloss	66400000	USD
	btu	Business Interruption Losses BusinessInterruptionLosses	33900000	USD
CY2020Q3	us-gaap	Assets Assets	4860900000	USD
CY2020Q3	btu	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	3152300000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	44900000	USD
CY2019Q4	us-gaap	Assets Assets	6542800000	USD
CY2019Q4	btu	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	4679100000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	82400000	USD

Files In Submission

Name	View Source	Status
0001064728-20-000033-index-headers.html	Edgar Link	pending
0001064728-20-000033-index.html	Edgar Link	pending
0001064728-20-000033.txt	Edgar Link	pending
0001064728-20-000033-xbrl.zip	Edgar Link	pending
btu-20200930.htm	Edgar Link	pending
btu-20200930.xsd	Edgar Link	pending
btu-20200930_cal.xml	Edgar Link	unprocessable
btu-20200930_def.xml	Edgar Link	unprocessable
btu-20200930_g1.jpg	Edgar Link	pending
btu-20200930_htm.xml	Edgar Link	completed
btu-20200930_lab.xml	Edgar Link	unprocessable
btu-20200930_pre.xml	Edgar Link	unprocessable
btu20200930ex104.htm	Edgar Link	pending
btu20200930ex105.htm	Edgar Link	pending
btu20200930ex311.htm	Edgar Link	pending
btu20200930ex312.htm	Edgar Link	pending
btu20200930ex321.htm	Edgar Link	pending
btu20200930ex322.htm	Edgar Link	pending
btu20200930ex95.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
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R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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2020 Q4 Form 10-Q Financial Statement

#000106472820000033 Filed on November 09, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BTU PEABODY ENERGY CORP Stock $btu

2020 Q4 Form 10-Q Financial Statement

#000106472820000033 Filed on November 09, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BTU
PEABODY ENERGY CORP Stock $btu