$BTU
PEABODY ENERGY CORP Stock $btu

$btu Overview Financials Valuation SEC Filings Company Website

2012 Q3 Form 10-Q Financial Statement

#000106472812000079 Filed on November 07, 2012

Income Statement

Concept	2012 Q3	2011 Q3
Revenue	$2.059B	$1.981B
YoY Change	3.95%	8.43%
Cost Of Revenue	$1.499B	$1.399B
YoY Change	7.12%	12.56%
Gross Profit	$559.7M	$581.2M
YoY Change	-3.7%	-6.47%
Gross Profit Margin	27.19%	29.34%
Selling, General & Admin	$68.70M	$71.20M
YoY Change	-3.51%	31.61%
% of Gross Profit	12.27%	12.25%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$172.5M	$108.4M
YoY Change	59.13%	-7.11%
% of Gross Profit	30.82%	18.65%
Operating Expenses	$68.70M	$71.20M
YoY Change	-3.51%	31.61%
Operating Profit	$266.5M	$385.5M
YoY Change	-30.87%	-13.82%
Interest Expense	$99.40M	$59.20M
YoY Change	67.91%	-4.82%
% of Operating Profit	37.3%	15.36%
Other Income/Expense, Net
YoY Change
Pretax Income	$172.2M	$330.4M
YoY Change	-47.88%	-14.25%
Income Tax	$49.30M	$39.20M
% Of Pretax Income	28.63%	11.86%
Net Earnings	$42.90M	$274.0M
YoY Change	-84.34%	22.27%
Net Earnings / Revenue	2.08%	13.83%
Basic Earnings Per Share	$0.16	$1.01
Diluted Earnings Per Share	$0.16	$1.00
COMMON SHARES
Basic Shares Outstanding	266.2M shares	269.2M shares
Diluted Shares Outstanding	266.8M shares	270.6M shares

Balance Sheet

Concept	2012 Q3	2011 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$648.0M	$1.402B
YoY Change	-53.78%	2.49%
Cash & Equivalents	$648.0M	$1.402B
Short-Term Investments
Other Short-Term Assets	$697.6M	$503.2M
YoY Change	38.63%	-11.41%
Inventory	$554.9M	$351.9M
Prepaid Expenses
Receivables	$682.2M	$591.4M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$2.655B	$3.005B
YoY Change	-11.66%	3.09%
LONG-TERM ASSETS
Property, Plant & Equipment	$12.51B	$7.808B
YoY Change	60.23%	8.16%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.685B	$879.0M
YoY Change	91.7%	4.89%
Other Assets	$1.685B	$878.5M
YoY Change	91.76%
Total Long-Term Assets	$14.20B	$8.687B
YoY Change	63.42%	7.8%
TOTAL ASSETS
Total Short-Term Assets	$2.655B	$3.005B
Total Long-Term Assets	$14.20B	$8.687B
Total Assets	$16.85B	$11.69B
YoY Change	44.12%	6.55%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.645B	$1.335B
YoY Change	23.22%	1.29%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$125.0M	$44.00M
YoY Change	184.09%	4.76%
Total Short-Term Liabilities	$1.790B	$1.441B
YoY Change	24.18%	2.15%
LONG-TERM LIABILITIES
Long-Term Debt	$6.238B	$2.459B
YoY Change	153.68%	-9.43%
Other Long-Term Liabilities	$743.6M	$466.7M
YoY Change	59.33%	-74.36%
Total Long-Term Liabilities	$743.6M	$466.7M
YoY Change	59.33%	-89.71%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.790B	$1.441B
Total Long-Term Liabilities	$743.6M	$466.7M
Total Liabilities	$10.87B	$6.369B
YoY Change	70.72%	-2.3%
SHAREHOLDERS EQUITY
Retained Earnings	$4.095B	$3.545B
YoY Change	15.53%
Common Stock	$2.285B	$2.231B
YoY Change	2.4%
Preferred Stock
YoY Change
Treasury Stock (at cost)	-$461.5M	$350.7M
YoY Change	-231.59%
Treasury Stock Shares	13.70M shares	9.168M shares
Shareholders Equity	$5.945B	$5.289B
YoY Change
Total Liabilities & Shareholders Equity	$16.85B	$11.69B
YoY Change	44.12%	6.55%

Cashflow Statement

Concept	2012 Q3	2011 Q3
OPERATING ACTIVITIES
Net Income	$42.90M	$274.0M
YoY Change	-84.34%	22.27%
Depreciation, Depletion And Amortization	$172.5M	$108.4M
YoY Change	59.13%	-7.11%
Cash From Operating Activities	$616.0M	$574.9M
YoY Change	7.15%	34.39%
INVESTING ACTIVITIES
Capital Expenditures	-$305.7M	-$235.0M
YoY Change	30.09%	126.4%
Acquisitions
YoY Change
Other Investing Activities	-$100.2M	-$82.00M
YoY Change	22.2%	-4.43%
Cash From Investing Activities	-$405.9M	-$317.0M
YoY Change	28.04%	67.19%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-51.30M	-33.20M
YoY Change	54.52%	19.86%
NET CHANGE
Cash From Operating Activities	616.0M	574.9M
Cash From Investing Activities	-405.9M	-317.0M
Cash From Financing Activities	-51.30M	-33.20M
Net Change In Cash	158.8M	224.7M
YoY Change	-29.33%	6.75%
FREE CASH FLOW
Cash From Operating Activities	$616.0M	$574.9M
Capital Expenditures	-$305.7M	-$235.0M
Free Cash Flow	$921.7M	$809.9M
YoY Change	13.8%	52.35%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2012Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	1645100000	USD
CY2011Q4	us-gaap	Accounts Receivable From Securitization AccountsReceivableFromSecuritization	150000000	USD
CY2012Q3	us-gaap	Accounts Receivable From Securitization AccountsReceivableFromSecuritization	100000000	USD
CY2012Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	682200000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	922500000	USD
CY2012Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3808200000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3320400000	USD
CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	23200000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-142400000	USD
CY2012Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2284900000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2234000000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	34900000	USD
	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	3600000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	17000000	USD
CY2012Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	15200000	USD
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
CY2011Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
CY2012Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	43300000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	53300000	USD
CY2011Q3	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	14600000	USD
CY2012Q3	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	21100000	USD
CY2012Q3	us-gaap	Assets Assets	16850400000	USD
CY2011Q4	us-gaap	Assets Assets	16733000000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	3005900000	USD
CY2012Q3	us-gaap	Assets Current AssetsCurrent	2654700000	USD
CY2012Q3	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	183600000	USD
CY2011Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	256800000	USD
CY2012Q3	us-gaap	Assets Of Disposal Group Including Discontinued Operation Noncurrent AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	135200000	USD
CY2011Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Noncurrent AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	232200000	USD
CY2011Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	92700000	USD
CY2012Q3	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	106800000	USD
	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	100000	USD
CY2012Q3	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	100000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	9500000	USD
CY2012Q3	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	40000000	USD
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	300000	USD
CY2012Q3	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	500000	USD
CY2012Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	1268300000	USD
CY2011Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	1084200000	USD
CY2012Q3	us-gaap	Capital Lease Obligations CapitalLeaseObligations	111600000	USD
CY2011Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	122800000	USD
CY2012Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	648000000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	799100000	USD
CY2011Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1401600000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1295200000	USD
	dei	Document Type DocumentType	10-Q
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CY2012Q3	us-gaap	Coal Products And Services Revenue CoalProductsAndServicesRevenue	1797200000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	106400000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-151100000	USD
	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-62800000	USD
	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-11200000	USD
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-26200000	USD
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-82200000	USD
	us-gaap	Coal Products And Services Revenue CoalProductsAndServicesRevenue	5029400000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.255
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.255
CY2011Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.085
CY2012Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.085
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	585900000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	664200000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	82400000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	119300000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-1300000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	17000000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	7400000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	7400000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	593300000	USD
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CY2011Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	89800000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	681200000	USD
CY2012Q3	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	6363100000	USD
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	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-162600000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	48200000	USD
CY2012Q3	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	15800000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	27300000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	0	USD
CY2012Q3	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	0	USD
CY2012Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	385000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	523200000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	317600000	USD
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	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	470700000	USD
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CY2011Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	240700000	USD
CY2012Q3	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	230200000	USD
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CY2011Q3	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	100700000	USD
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CY2011Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	11400000	USD
CY2012Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	6100000	USD
CY2011Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	19500000	USD
CY2012Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	6900000	USD
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-53900000	USD
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CY2011Q3	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	55300000	USD
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CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.72
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.55
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	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.71
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.55
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	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	6100000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	3600000	USD
	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	0	USD
CY2012Q3	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	0	USD
	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	0	USD
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CY2012Q3	us-gaap	Financing Receivable FinancingReceivable	385100000	USD
CY2011Q4	us-gaap	Financing Receivable FinancingReceivable	376100000	USD
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	us-gaap	Fair Value Level2 To Level1 Transfers Amount FairValueLevel2ToLevel1TransfersAmount	0	USD
	us-gaap	Fair Value Level2 To Level1 Transfers Amount FairValueLevel2ToLevel1TransfersAmount	0	USD
CY2011Q3	us-gaap	Gain Loss On Disposition Of Property GainLossOnDispositionOfProperty	1700000	USD
	us-gaap	Gain Loss On Disposition Of Property GainLossOnDispositionOfProperty	7600000	USD
	us-gaap	Gain Loss On Disposition Of Property GainLossOnDispositionOfProperty	31400000	USD
CY2012Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	2800000	USD
CY2012Q2	us-gaap	Gains Losses On Extinguishment Of Debt Before Write Off Of Deferred Debt Issuance Cost GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost	600000	USD
CY2012Q3	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	2295100000	USD
CY2012Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	USD
CY2011Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2012Q3	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	283800000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	124200000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	513000000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	774300000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	330400000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	172200000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	605900000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1030100000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	791300000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	122900000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	291200000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	520400000	USD
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.86
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.89
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.05
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.46
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.84
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.46
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.89
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.04
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-38900000	USD
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-81300000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-9700000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-92700000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.34
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.30
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.14
CY2011Q3	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	-0.13
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.30
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.34
CY2011Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3200000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-9000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-50500000	USD
CY2012Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-21200000	USD
CY2011Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	39200000	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	49300000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	238800000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	85500000	USD
	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-30900000	USD
CY2012Q3	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	4100000	USD
CY2011Q3	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2500000	USD
	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	7000000	USD
	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-74300000	USD
CY2011Q3	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-23800000	USD
CY2012Q3	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-17500000	USD
	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-72000000	USD
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	212100000	USD
CY2011Q3	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	115600000	USD
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	360600000	USD
CY2012Q3	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	60200000	USD
CY2012Q3	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-16700000	USD
	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-58800000	USD
CY2011Q3	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-17000000	USD
	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-53000000	USD
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	36600000	USD
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	8100000	USD
CY2012Q3	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	6100000	USD
CY2011Q3	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-3900000	USD
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	15500000	USD
CY2012Q3	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4400000	USD
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9200000	USD
CY2011Q3	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2900000	USD
CY2011Q3	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	4400000	USD
	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	47600000	USD
	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	12700000	USD
CY2012Q3	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	13500000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	84600000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-15600000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	11800000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-259000000	USD
	us-gaap	Increase Decrease In Accounts Receivable From Securitization IncreaseDecreaseInAccountsReceivableFromSecuritization	50000000	USD
	us-gaap	Increase Decrease In Accounts Receivable From Securitization IncreaseDecreaseInAccountsReceivableFromSecuritization	0	USD
	us-gaap	Increase Decrease In Asset Retirement Obligations IncreaseDecreaseInAssetRetirementObligations	27200000	USD
	us-gaap	Increase Decrease In Asset Retirement Obligations IncreaseDecreaseInAssetRetirementObligations	55600000	USD
	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	0	USD
	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	-743400000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	117400000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	12300000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-42700000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	42300000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	18100000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	5100000	USD
	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	26600000	USD
	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	27700000	USD
	us-gaap	Interest Expense InterestExpense	308300000	USD
	us-gaap	Interest Expense InterestExpense	159100000	USD
CY2012Q3	us-gaap	Interest Expense InterestExpense	99400000	USD
CY2011Q3	us-gaap	Interest Expense InterestExpense	59200000	USD
CY2012Q3	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	0	USD
CY2012Q3	us-gaap	Inventory Net InventoryNet	554900000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	444400000	USD
CY2011Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	123700000	USD
CY2012Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	157000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	11700000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	19700000	USD
CY2011Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	4100000	USD
CY2012Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	5100000	USD
CY2012Q3	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	88100000	USD
	us-gaap	Investments In And Advances To Affiliates At Fair Value Gross Additions InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions	-531200000	USD
	us-gaap	Investments In And Advances To Affiliates At Fair Value Gross Additions InvestmentsInAndAdvancesToAffiliatesAtFairValueGrossAdditions	0	USD
CY2011Q4	us-gaap	Liabilities Liabilities	11217200000	USD
CY2012Q3	us-gaap	Liabilities Liabilities	10873400000	USD
CY2012Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	16850400000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	16733000000	USD
CY2012Q3	us-gaap	Liabilities Current LiabilitiesCurrent	1789800000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1823700000	USD
CY2012Q3	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	93200000	USD
CY2011Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	123500000	USD
CY2012Q3	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	33400000	USD
CY2011Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	63900000	USD
CY2011Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	6556400000	USD
CY2012Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	6238300000	USD
CY2012Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	124800000	USD
CY2011Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	101100000	USD
CY2011Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	2857300000	USD
CY2012Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	3175800000	USD
CY2011Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	615200000	USD
CY2012Q3	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	662400000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	30700000	USD
CY2012Q3	us-gaap	Minority Interest MinorityInterest	32400000	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5700000	USD
	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	-49800000	USD
	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-520800000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-327300000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-756800000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-921800000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-694000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-910600000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1190500000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1291500000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1216700000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1373700000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	42900000	USD
	us-gaap	Net Income Loss NetIncomeLoss	735400000	USD
	us-gaap	Net Income Loss NetIncomeLoss	420300000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	274100000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7400000	USD
CY2011Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7400000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17000000	USD
CY2012Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1300000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	42700000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	731200000	USD
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	272500000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	417300000	USD
CY2011Q4	us-gaap	Notes Payable Related Parties Noncurrent NotesPayableRelatedPartiesNoncurrent	0	USD
CY2012Q3	us-gaap	Notes Payable Related Parties Noncurrent NotesPayableRelatedPartiesNoncurrent	0	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	1177500000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	385500000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	266500000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	894500000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-135900000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	79700000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	302000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	111500000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	768000000	USD
CY2012Q3	us-gaap	Other Assets Current OtherAssetsCurrent	697600000	USD
CY2012Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1684600000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2475500000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	-3000000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	-2000000	USD
	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	-11200000	USD
	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	-2300000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	33700000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	13900000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	41600000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	10200000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	24200000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	-197400000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	53800000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	-100600000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	122800000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	39700000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	36800000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	-66700000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	-140300000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	13800000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	20400000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	0	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-191700000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	165600000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-71200000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	76400000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	100000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	0	USD
CY2011Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	100000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-61500000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-57700000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-179200000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-180300000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-4300000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-4500000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-19200000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-5100000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	11200000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	645600000	USD
CY2012Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	743600000	USD
CY2011Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	43400000	USD
CY2012Q3	us-gaap	Other Long Term Debt OtherLongTermDebt	43900000	USD
CY2011Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	1053100000	USD
CY2012Q3	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	1054300000	USD
CY2012Q3	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	261600000	USD
	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	636700000	USD
	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	778600000	USD
CY2011Q3	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	298400000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3200000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	4400000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	99900000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	69100000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	69100000	USD
	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	45500000	USD
	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	0	USD
	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	29800000	USD
	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	9400000	USD
	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	39800000	USD
	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	0	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	44100000	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	23800000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	553400000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	732100000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	100000000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
	us-gaap	Pension Contributions PensionContributions	1300000	USD
	us-gaap	Pension Contributions PensionContributions	1300000	USD
	us-gaap	Pension Expense PensionExpense	26000000	USD
	us-gaap	Pension Expense PensionExpense	25500000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	100000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	200000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	8400000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	39000000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	53300000	USD
CY2012Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	0	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	9800000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	12100000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	93500000	USD
	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	100000000	USD
	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	0	USD
CY2012Q3	us-gaap	Profit Loss ProfitLoss	41600000	USD
	us-gaap	Profit Loss ProfitLoss	752400000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	281500000	USD
	us-gaap	Profit Loss ProfitLoss	427700000	USD
CY2012Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	12511100000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	11251600000	USD
CY2011Q4	us-gaap	Related Party Transaction Due From To Related Party Current RelatedPartyTransactionDueFromToRelatedPartyCurrent	0	USD
CY2012Q3	us-gaap	Related Party Transaction Due From To Related Party Current RelatedPartyTransactionDueFromToRelatedPartyCurrent	0	USD
	us-gaap	Repayment Of Notes Receivable From Related Parties RepaymentOfNotesReceivableFromRelatedParties	0	USD
	us-gaap	Repayment Of Notes Receivable From Related Parties RepaymentOfNotesReceivableFromRelatedParties	720200000	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	248400000	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	305700000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3744000000	USD
CY2012Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4095200000	USD
CY2011Q3	us-gaap	Revenues Revenues	1980600000	USD
CY2012Q3	us-gaap	Revenues Revenues	2058800000	USD
	us-gaap	Revenues Revenues	6060600000	USD
	us-gaap	Revenues Revenues	5666100000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	202400000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	191400000	USD
CY2012Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	68700000	USD
CY2011Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	71200000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	32400000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	34900000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	7100000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1700000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	5485100000	USD
CY2012Q3	us-gaap	Stockholders Equity StockholdersEquity	5944600000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5515800000	USD
CY2012Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5977000000	USD
CY2012Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	13700000	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	9200000	shares
CY2012Q3	us-gaap	Treasury Stock Value TreasuryStockValue	-461500000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	353300000	USD
CY2012Q3	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2012Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	2200000	USD
	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	19400000	USD
CY2011Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1400000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1500000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	700000	shares
CY2012Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	600000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	269200000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	270600000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	266800000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	270500000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	269200000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	268500000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	266200000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	269000000	shares
CY2012Q2	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	3400000	USD
	btu	Additional Cash Upon Collection Of Underlying Receivables AdditionalCashUponCollectionOfUnderlyingReceivables	874600000	USD
	btu	Aggregate Received From Alpha For Reimbursement Payment And First True Up Payment AggregateReceivedFromAlphaForReimbursementPaymentAndFirstTrueUpPayment	17400000	USD
CY2012Q3	btu	Amount Available Under Securitization Program AmountAvailableUnderSecuritizationProgram	153100000	USD
CY2012Q3	btu	Amount In Letters Of Credit And Surety Bonds Related To Collateral For Surety Companies Road Maintenance Performance Guarantees And Other Operations AmountInLettersOfCreditAndSuretyBondsRelatedToCollateralForSuretyCompaniesRoadMaintenancePerformanceGuaranteesAndOtherOperations	216000000	USD
CY2014	btu	Annual Coal Reserve Payments Pursuant To Belle Ayr North Lease AnnualCoalReservePaymentsPursuantToBelleAyrNorthLease	42100000	USD
CY2015	btu	Annual Coal Reserve Payments Pursuant To Belle Ayr North Lease AnnualCoalReservePaymentsPursuantToBelleAyrNorthLease	42100000	USD
CY2013	btu	Annual Coal Reserve Payments Pursuant To Belle Ayr North Lease AnnualCoalReservePaymentsPursuantToBelleAyrNorthLease	42100000	USD
CY2012	btu	Annual Coal Reserve Payments Pursuant To Belle Ayr North Lease AnnualCoalReservePaymentsPursuantToBelleAyrNorthLease	42100000	USD
CY2011	btu	Annual Coal Reserve Payments Pursuant To Belle Ayr North Lease AnnualCoalReservePaymentsPursuantToBelleAyrNorthLease	42100000	USD
CY2014	btu	Annual Coal Reserve Payments Pursuant To Caballo West Lease AnnualCoalReservePaymentsPursuantToCaballoWestLease	28600000	USD
CY2015	btu	Annual Coal Reserve Payments Pursuant To Caballo West Lease AnnualCoalReservePaymentsPursuantToCaballoWestLease	28600000	USD
CY2013	btu	Annual Coal Reserve Payments Pursuant To Caballo West Lease AnnualCoalReservePaymentsPursuantToCaballoWestLease	28600000	USD
CY2012	btu	Annual Coal Reserve Payments Pursuant To Caballo West Lease AnnualCoalReservePaymentsPursuantToCaballoWestLease	28600000	USD
CY2011	btu	Annual Coal Reserve Payments Pursuant To Caballo West Lease AnnualCoalReservePaymentsPursuantToCaballoWestLease	28600000	USD
CY2014Q4	btu	Annual True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2015Q4	btu	Annual True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2013Q4	btu	Annual True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2012Q4	btu	Annual True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2012Q3	btu	Annual True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2016	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
CY2015	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
CY2014	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
CY2013	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
CY2011Q4	btu	Assets From Coal Trading Activities Net AssetsFromCoalTradingActivitiesNet	44600000	USD
CY2012Q3	btu	Assets From Coal Trading Activities Net AssetsFromCoalTradingActivitiesNet	56200000	USD
CY2011Q3	btu	Bid Price Per Mineable Ton BidPricePerMineableTon	0.95	USD
CY2011Q3	btu	Bid Price Per Mineable Ton In Powder River Basin BidPricePerMineableTonInPowderRiverBasin	1.10	USD
CY2012Q3	btu	Business Acquisition Percentage Of Agreed Sale Price As Consideration BusinessAcquisitionPercentageOfAgreedSalePriceAsConsideration	0.20
CY2012Q3	btu	Business Acquisition Percentage Of Agreed Sale Price As Final Installment Payment BusinessAcquisitionPercentageOfAgreedSalePriceAsFinalInstallmentPayment	0.40
CY2012Q3	btu	Business Acquistion Percentage Of Agreed Sales Price First Installment Payment BusinessAcquistionPercentageOfAgreedSalesPriceFirstInstallmentPayment	0.40
	btu	Capacity Of New Electricity Generation Project CapacityOfNewElectricityGenerationProject	1600
	btu	Cash Up Front From Sale Of Receivables CashUpFrontFromSaleOfReceivables	1973700000	USD
	btu	Changes In Tax Reserves ChangesInTaxReserves	10800000	USD
CY2011Q3	btu	Changes In Tax Reserves ChangesInTaxReserves	6000000	USD
	btu	Changes In Tax Reserves ChangesInTaxReserves	21900000	USD
CY2012Q3	btu	Changes In Tax Reserves ChangesInTaxReserves	8600000	USD
CY2012Q2	btu	Commencementof800 Megawattgenerationunit Commencementof800Megawattgenerationunit	800
CY2012Q3	btu	Commencementof800 Megawattgenerationunit2 Commencementof800Megawattgenerationunit2	800
	btu	Consideration Received By Company Related To Securitization Program ConsiderationReceivedByCompanyRelatedToSecuritizationProgram	3210200000	USD
CY2012Q3	btu	Consideration Received By Company Upon Completion Of Sell Down ConsiderationReceivedByCompanyUponCompletionOfSellDown	15000000	AUD
	btu	Earnings From Continuing Operations Allocated To Participating Securities EarningsFromContinuingOperationsAllocatedToParticipatingSecurities	4400000	USD
	btu	Earnings From Continuing Operations Allocated To Participating Securities EarningsFromContinuingOperationsAllocatedToParticipatingSecurities	3800000	USD
CY2011Q3	btu	Earnings From Continuing Operations Allocated To Participating Securities EarningsFromContinuingOperationsAllocatedToParticipatingSecurities	1600000	USD
CY2012Q3	btu	Earnings From Continuing Operations Allocated To Participating Securities EarningsFromContinuingOperationsAllocatedToParticipatingSecurities	800000	USD
CY2011Q3	btu	Expenses Associated With Securitization Transactions ExpensesAssociatedWithSecuritizationTransactions	400000	USD
	btu	Expenses Associated With Securitization Transactions ExpensesAssociatedWithSecuritizationTransactions	1400000	USD
CY2012Q3	btu	Expenses Associated With Securitization Transactions ExpensesAssociatedWithSecuritizationTransactions	500000	USD
	btu	Expenses Associated With Securitization Transactions ExpensesAssociatedWithSecuritizationTransactions	1500000	USD
CY2013	btu	Export Capacity In2013 ExportCapacityIn2013	2000000	T
CY2014	btu	Export Capacity In2014 ExportCapacityIn2014	4000000	T
	btu	Federal Coal Lease Expenditures FederalCoalLeaseExpenditures	-247900000	USD
	btu	Federal Coal Lease Expenditures FederalCoalLeaseExpenditures	-42400000	USD
	btu	Federal Coal Lease Term FederalCoalLeaseTerm	20	Y
CY2012Q3	btu	Funding Threshhold FundingThreshhold	0.80
CY2011Q3	btu	Income From Continuing Operations Attributable To Common Stockholders IncomeFromContinuingOperationsAttributableToCommonStockholders	282200000	USD
CY2012Q3	btu	Income From Continuing Operations Attributable To Common Stockholders IncomeFromContinuingOperationsAttributableToCommonStockholders	123400000	USD
	btu	Income From Continuing Operations Attributable To Common Stockholders IncomeFromContinuingOperationsAttributableToCommonStockholders	509200000	USD
	btu	Income From Continuing Operations Attributable To Common Stockholders IncomeFromContinuingOperationsAttributableToCommonStockholders	769900000	USD
CY2011Q4	btu	Land And Coal Interests LandAndCoalInterests	10630500000	USD
CY2012Q3	btu	Land And Coal Interests LandAndCoalInterests	11875200000	USD
CY2012Q3	btu	Leasedcoalreservesadjacenttonarm Leasedcoalreservesadjacenttonarm	1100000000	T
CY2011Q4	btu	Liabilities From Coal Trading Activities Net LiabilitiesFromCoalTradingActivitiesNet	10300000	USD
CY2012Q3	btu	Liabilities From Coal Trading Activities Net LiabilitiesFromCoalTradingActivitiesNet	19900000	USD
CY2011Q3	btu	Litigation Settlement Damages Awarded To Plaintiff LitigationSettlementDamagesAwardedToPlaintiff	20500000	USD
	btu	Long Term Investments Maturity Period Description LongTermInvestmentsMaturityPeriodDescription	Greater than one year
CY2011Q3	btu	Loss From Discontinued Operations Allocated To Participating Securities LossFromDiscontinuedOperationsAllocatedToParticipatingSecurities	0	USD
	btu	Loss From Discontinued Operations Allocated To Participating Securities LossFromDiscontinuedOperationsAllocatedToParticipatingSecurities	-800000	USD
	btu	Loss From Discontinued Operations Allocated To Participating Securities LossFromDiscontinuedOperationsAllocatedToParticipatingSecurities	-200000	USD
CY2012Q3	btu	Loss From Discontinued Operations Allocated To Participating Securities LossFromDiscontinuedOperationsAllocatedToParticipatingSecurities	-600000	USD
	btu	Loss From Discontinued Operations Attributable To Common Stockholders After Earnings Allocated To Participating Securities LossFromDiscontinuedOperationsAttributableToCommonStockholdersAfterEarningsAllocatedToParticipatingSecurities	-38700000	USD
	btu	Loss From Discontinued Operations Attributable To Common Stockholders After Earnings Allocated To Participating Securities LossFromDiscontinuedOperationsAttributableToCommonStockholdersAfterEarningsAllocatedToParticipatingSecurities	-91900000	USD
CY2011Q3	btu	Loss From Discontinued Operations Attributable To Common Stockholders After Earnings Allocated To Participating Securities LossFromDiscontinuedOperationsAttributableToCommonStockholdersAfterEarningsAllocatedToParticipatingSecurities	-9700000	USD
CY2012Q3	btu	Loss From Discontinued Operations Attributable To Common Stockholders After Earnings Allocated To Participating Securities LossFromDiscontinuedOperationsAttributableToCommonStockholdersAfterEarningsAllocatedToParticipatingSecurities	-80700000	USD
	btu	Loss From Equity Affiliates Amortization Of Basis Difference LossFromEquityAffiliatesAmortizationOfBasisDifference	0	USD
CY2012Q3	btu	Loss From Equity Affiliates Amortization Of Basis Difference LossFromEquityAffiliatesAmortizationOfBasisDifference	-200000	USD
CY2011Q3	btu	Loss From Equity Affiliates Amortization Of Basis Difference LossFromEquityAffiliatesAmortizationOfBasisDifference	0	USD
	btu	Loss From Equity Affiliates Amortization Of Basis Difference LossFromEquityAffiliatesAmortizationOfBasisDifference	3000000	USD
CY2011Q4	btu	Margin Posted To Counterparties Related To Credit Downgrade MarginPostedToCounterpartiesRelatedToCreditDowngrade	1000000	USD
CY2012Q3	btu	Margin Posted To Counterparties Related To Credit Downgrade MarginPostedToCounterpartiesRelatedToCreditDowngrade	1000000	USD
CY2011Q4	btu	Margin Posted To Counterparties Related To Credit Rating MarginPostedToCounterpartiesRelatedToCreditRating	0	USD
CY2012Q3	btu	Margin Posted To Counterparties Related To Credit Rating MarginPostedToCounterpartiesRelatedToCreditRating	0	USD
CY2012Q3	btu	Maximum Capacity Of Securitization Program MaximumCapacityOfSecuritizationProgram	275000000	USD
CY2012	btu	Minimum Contribution In2012 To Unqualified Plan MinimumContributionIn2012ToUnqualifiedPlan	2000000	USD
CY2012	btu	Minimum Contributions In2012 On Qualified Plan MinimumContributionsIn2012OnQualifiedPlan	5000000	USD
CY2012Q3	btu	Mrrt Effective Tax Rate MrrtEffectiveTaxRate	0.225
	btu	Mrrt Market Value Starting Base Deferred Tax Asset MrrtMarketValueStartingBaseDeferredTaxAsset	0	USD
CY2007Q4	btu	Number Of Coal Preparation Facilities Servicing Contractor Operatedines Included In Patriot Spin Off NumberOfCoalPreparationFacilitiesServicingContractorOperatedinesIncludedInPatriotSpinOff	8
CY2007Q4	btu	Number Of Company Operated Mines Included In Patriot Spin Off NumberOfCompanyOperatedMinesIncludedInPatriotSpinOff	8
CY2007Q4	btu	Number Of Majority Owned Jv Mines Included In Patriot Spin Off NumberOfMajorityOwnedJvMinesIncludedInPatriotSpinOff	2
CY2011Q3	btu	Number Of Tons Of Coal In Which Company Was Named Winning Bidder Adjacent To Caballo NumberOfTonsOfCoalInWhichCompanyWasNamedWinningBidderAdjacentToCaballo	220000000	T
CY2011Q3	btu	Number Of Tons Of Coal In Which Company Was Named Winning Bidder In Powder River Basin NumberOfTonsOfCoalInWhichCompanyWasNamedWinningBidderInPowderRiverBasin	130000000	T
CY2011Q3	btu	Operating Costs And Expense OperatingCostsAndExpense	1399400000	USD
	btu	Operating Costs And Expense OperatingCostsAndExpense	3958700000	USD
	btu	Net Assets From Coal Trading Activities NetAssetsFromCoalTradingActivities	71700000	USD
	btu	Net Assets From Coal Trading Activities NetAssetsFromCoalTradingActivities	145600000	USD
CY2011Q3	btu	Net Unrealized Holding Gains Losses On Available For Sale Securities Net Of Taxes Before Reclassification Adjustment NetUnrealizedHoldingGainsLossesOnAvailableForSaleSecuritiesNetOfTaxesBeforeReclassificationAdjustment	-4400000	USD
CY2012Q3	btu	Net Unrealized Holding Gains Losses On Available For Sale Securities Net Of Taxes Before Reclassification Adjustment NetUnrealizedHoldingGainsLossesOnAvailableForSaleSecuritiesNetOfTaxesBeforeReclassificationAdjustment	-5100000	USD
	btu	Net Unrealized Holding Gains Losses On Available For Sale Securities Net Of Taxes Before Reclassification Adjustment NetUnrealizedHoldingGainsLossesOnAvailableForSaleSecuritiesNetOfTaxesBeforeReclassificationAdjustment	-19200000	USD
	btu	Net Unrealized Holding Gains Losses On Available For Sale Securities Net Of Taxes Before Reclassification Adjustment NetUnrealizedHoldingGainsLossesOnAvailableForSaleSecuritiesNetOfTaxesBeforeReclassificationAdjustment	-4200000	USD
CY2012Q3	btu	Non Collected Receivables NonCollectedReceivables	362000000	USD
	btu	Noncontrolling Interest Increase From Business Combination As Of Control Date NoncontrollingInterestIncreaseFromBusinessCombinationAsOfControlDate	53400000	USD
CY2012Q3	btu	Operating Costs And Expense OperatingCostsAndExpense	1509000000	USD
	btu	Operating Costs And Expense OperatingCostsAndExpense	4396800000	USD
CY2011Q3	btu	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	0	USD
CY2012Q3	btu	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	0	USD
	btu	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	0	USD
	btu	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	3500000	USD
	btu	Other Comprehensive Income Loss Reclassification And Amortization Pension And Other Postretirement Benefit Plans Net Gain Loss And Net Prior Service Cost Recognized Net Of Tax OtherComprehensiveIncomeLossReclassificationAndAmortizationPensionAndOtherPostretirementBenefitPlansNetGainLossAndNetPriorServiceCostRecognizedNetOfTax	30200000	USD
CY2012Q3	btu	Other Comprehensive Income Loss Reclassification And Amortization Pension And Other Postretirement Benefit Plans Net Gain Loss And Net Prior Service Cost Recognized Net Of Tax OtherComprehensiveIncomeLossReclassificationAndAmortizationPensionAndOtherPostretirementBenefitPlansNetGainLossAndNetPriorServiceCostRecognizedNetOfTax	13900000	USD
CY2011Q3	btu	Other Comprehensive Income Loss Reclassification And Amortization Pension And Other Postretirement Benefit Plans Net Gain Loss And Net Prior Service Cost Recognized Net Of Tax OtherComprehensiveIncomeLossReclassificationAndAmortizationPensionAndOtherPostretirementBenefitPlansNetGainLossAndNetPriorServiceCostRecognizedNetOfTax	10200000	USD
	btu	Other Comprehensive Income Loss Reclassification And Amortization Pension And Other Postretirement Benefit Plans Net Gain Loss And Net Prior Service Cost Recognized Net Of Tax OtherComprehensiveIncomeLossReclassificationAndAmortizationPensionAndOtherPostretirementBenefitPlansNetGainLossAndNetPriorServiceCostRecognizedNetOfTax	41600000	USD
CY2011Q4	btu	Other Noncurrent Liability OtherNoncurrentLiability	2313900000	USD
CY2012Q3	btu	Other Noncurrent Liability OtherNoncurrentLiability	2460300000	USD
CY2011Q4	btu	Patriot Collateral Posted With Department Of Labor PatriotCollateralPostedWithDepartmentOfLabor	15000000	USD
	btu	Payments For Repurchase Of Common Stock Relinquished For Tax Withholding PaymentsForRepurchaseOfCommonStockRelinquishedForTaxWithholding	16100000	USD
	btu	Payments For Repurchase Of Common Stock Relinquished For Tax Withholding PaymentsForRepurchaseOfCommonStockRelinquishedForTaxWithholding	8300000	USD
CY2012Q3	btu	Potential Exposure From Patriot Bankruptcy PotentialExposureFromPatriotBankruptcy	150000000	USD
CY2011Q2	btu	Project Development Fee Received ProjectDevelopmentFeeReceived	14600000	USD
CY2007Q4	btu	Proven And Probable Coal Reserves Related To Patriot ProvenAndProbableCoalReservesRelatedToPatriot	1200000000	T
CY2011Q4	btu	Raw Coal RawCoal	108100000	USD
CY2012Q3	btu	Raw Coal RawCoal	162200000	USD
	btu	Reallocation Adjustment For Participating Securities ReallocationAdjustmentForParticipatingSecurities	100000	USD
CY2011Q3	btu	Reallocation Adjustment For Participating Securities ReallocationAdjustmentForParticipatingSecurities	100000	USD
CY2012Q3	btu	Reallocation Adjustment For Participating Securities ReallocationAdjustmentForParticipatingSecurities	100000	USD
	btu	Reallocation Adjustment For Participating Securities ReallocationAdjustmentForParticipatingSecurities	100000	USD
CY2011Q2	btu	Recognized Gain On Coal Reserves Exchange RecognizedGainOnCoalReservesExchange	23500000	USD
CY2012Q3	btu	Reimbursement For Difference In Federal Coal Lease Payments Made In2011 ReimbursementForDifferenceInFederalCoalLeasePaymentsMadeIn2011	13500000	USD
CY2012Q4	btu	Remaining Annual True Up Payments Due From Alpha On November1 Of Each Of Years From2012 Through2015 RemainingAnnualTrueUpPaymentsDueFromAlphaOnNovember1OfEachOfYearsFrom2012Through2015	4
CY2011Q3	btu	Remeasurement Of Foreign Taxes RemeasurementOfForeignTaxes	-38700000	USD
CY2012Q3	btu	Remeasurement Of Foreign Taxes RemeasurementOfForeignTaxes	13600000	USD
	btu	Remeasurement Of Foreign Taxes RemeasurementOfForeignTaxes	8700000	USD
	btu	Remeasurement Of Foreign Taxes RemeasurementOfForeignTaxes	-16900000	USD
CY2011	btu	Sale Of Business Percentage Of Ownership Before Transaction SaleOfBusinessPercentageOfOwnershipBeforeTransaction	0.85
CY2011Q4	btu	Saleable Coal SaleableCoal	212600000	USD
CY2012Q3	btu	Saleable Coal SaleableCoal	235700000	USD
	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	1421500000	USD
CY2011Q3	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	508500000	USD
CY2012Q3	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	459900000	USD
	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	1538400000	USD
	btu	Shares Relinquished SharesRelinquished	-8300000	USD
	btu	Short Term Investments Maturity Period Description ShortTermInvestmentsMaturityPeriodDescription	Greater than three months and up to one year
	btu	Tax Impact Related To Postretirement Plans And Workers Compensation Obligations TaxImpactRelatedToPostretirementPlansAndWorkersCompensationObligations	24200000	USD
CY2011Q3	btu	Tax Impact Related To Postretirement Plans And Workers Compensation Obligations TaxImpactRelatedToPostretirementPlansAndWorkersCompensationObligations	6300000	USD
CY2012Q3	btu	Tax Impact Related To Postretirement Plans And Workers Compensation Obligations TaxImpactRelatedToPostretirementPlansAndWorkersCompensationObligations	8100000	USD
	btu	Tax Impact Related To Postretirement Plans And Workers Compensation Obligations TaxImpactRelatedToPostretirementPlansAndWorkersCompensationObligations	12800000	USD
	btu	Time Period Of Lease That Permits Partnership To Purchase Terminal TimePeriodOfLeaseThatPermitsPartnershipToPurchaseTerminal	P30Y
	btu	Transactions With Affiliates Net TransactionsWithAffiliatesNet	0	USD
	btu	Transactions With Affiliates Net TransactionsWithAffiliatesNet	0	USD
	btu	Unrecognized Tax Benefits Decrease UnrecognizedTaxBenefitsDecrease	13500000	USD
CY2012Q3	btu	Weightedaveragebidpricepermineabletononcoalreserves Weightedaveragebidpricepermineabletononcoalreserves	1.10	USD
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
	dei	Document Period End Date DocumentPeriodEndDate	2012-09-30
	dei	Entity Central Index Key EntityCentralIndexKey	0001064728
CY2012Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	268385935	shares
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	PEABODY ENERGY CORP

Files In Submission

Name	View Source	Status
0001064728-12-000079-index-headers.html	Edgar Link	pending
0001064728-12-000079-index.html	Edgar Link	pending
0001064728-12-000079.txt	Edgar Link	pending
0001064728-12-000079-xbrl.zip	Edgar Link	pending
btu-20120930.xml	Edgar Link	completed
btu-20120930.xsd	Edgar Link	pending
btu-20120930_cal.xml	Edgar Link	unprocessable
btu-20120930_def.xml	Edgar Link	unprocessable
btu-20120930_lab.xml	Edgar Link	unprocessable
btu-20120930_pre.xml	Edgar Link	unprocessable
btu_2012093010q.htm	Edgar Link	pending
btu_20120930xex103.htm	Edgar Link	pending
btu_20120930xex104.htm	Edgar Link	pending
btu_20120930xex105.htm	Edgar Link	pending
btu_20120930xex311.htm	Edgar Link	pending
btu_20120930xex312.htm	Edgar Link	pending
btu_20120930xex321.htm	Edgar Link	pending
btu_20120930xex322.htm	Edgar Link	pending
btu_20120930xex95.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
peabodya02a01.gif	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
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R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$BTU
PEABODY ENERGY CORP Stock $btu

2012 Q3 Form 10-Q Financial Statement

#000106472812000079 Filed on November 07, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BTU PEABODY ENERGY CORP Stock $btu

2012 Q3 Form 10-Q Financial Statement

#000106472812000079 Filed on November 07, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BTU
PEABODY ENERGY CORP Stock $btu