$BTU
PEABODY ENERGY CORP Stock $btu

$btu Overview Financials Valuation SEC Filings Company Website

2013 Form 10-K Financial Statement

#000106472814000015 Filed on February 21, 2014

Income Statement

Concept	2013	2012 Q4	2012 Q3
Revenue	$7.014B	$2.017B	$2.059B
YoY Change	-13.17%	-9.55%	3.95%
Cost Of Revenue	$5.904B	$1.536B	$1.499B
YoY Change	-6.7%	1.12%	7.12%
Gross Profit	$1.110B	$481.0M	$559.7M
YoY Change	-36.56%	-32.34%	-3.7%
Gross Profit Margin	15.82%	23.85%	27.19%
Selling, General & Admin	$244.2M	$80.10M	$68.70M
YoY Change	-9.15%	-6.97%	-3.51%
% of Gross Profit	22.0%	16.65%	12.27%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$740.3M	$192.7M	$172.5M
YoY Change	11.59%	22.97%	59.13%
% of Gross Profit	66.71%	40.06%	30.82%
Operating Expenses	$244.2M	$272.8M	$68.70M
YoY Change	-9.15%	12.36%	-3.51%
Operating Profit	-$324.8M	-$722.0M	$266.5M
YoY Change	-288.29%	-272.64%	-30.87%
Interest Expense	$408.3M	-$103.2M	$99.40M
YoY Change	0.67%	25.09%	67.91%
% of Operating Profit			37.3%
Other Income/Expense, Net
YoY Change
Pretax Income	-$734.3M	-$814.5M	$172.2M
YoY Change	252.01%	-335.47%	-47.88%
Income Tax	-$448.3M	$176.8M	$49.30M
% Of Pretax Income			28.63%
Net Earnings	-$524.9M	-$1.006B	$42.90M
YoY Change	-10.38%	-552.34%	-84.34%
Net Earnings / Revenue	-7.48%	-49.88%	2.08%
Basic Earnings Per Share	-$29.53		$0.16
Diluted Earnings Per Share	-$29.53	-$3.781M	$0.16
COMMON SHARES
Basic Shares Outstanding	17.80M shares	266.3M shares	266.2M shares
Diluted Shares Outstanding	17.80M shares	266.3M shares	266.8M shares

Balance Sheet

Concept	2013	2012 Q4	2012 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$444.0M	$559.0M	$648.0M
YoY Change	-20.57%	-30.04%	-53.78%
Cash & Equivalents	$444.0M	$558.8M	$648.0M
Short-Term Investments
Other Short-Term Assets	$484.0M	$621.7M	$697.6M
YoY Change	-33.79%	-19.05%	38.63%
Inventory	$507.0M	$548.4M	$554.9M
Prepaid Expenses
Receivables	$558.0M	$737.8M	$682.2M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.993B	$2.576B	$2.655B
YoY Change	-22.63%	-14.32%	-11.66%
LONG-TERM ASSETS
Property, Plant & Equipment	$11.08B	$11.80B	$12.51B
YoY Change	-6.09%	4.89%	60.23%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$651.0M	$298.6M	$1.685B
YoY Change	-25.34%	-43.3%	91.7%
Other Assets	$55.00M	$1.432B	$1.685B
YoY Change	-67.46%	-42.16%	91.76%
Total Long-Term Assets	$12.14B	$13.23B	$14.20B
YoY Change	-8.26%	-3.6%	63.42%
TOTAL ASSETS
Total Short-Term Assets	$1.993B	$2.576B	$2.655B
Total Long-Term Assets	$12.14B	$13.23B	$14.20B
Total Assets	$14.13B	$15.81B	$16.85B
YoY Change	-10.6%	-5.52%	44.12%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$483.0M		$1.645B
YoY Change			23.22%
Accrued Expenses	$687.0M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$32.00M	$48.00M	$125.0M
YoY Change	-33.33%	-52.48%	184.09%
Total Short-Term Liabilities	$1.802B	$1.674B	$1.790B
YoY Change	7.65%	-8.2%	24.18%
LONG-TERM LIABILITIES
Long-Term Debt	$5.971B	$6.205B	$6.238B
YoY Change	-3.77%	-5.35%	153.68%
Other Long-Term Liabilities	$2.372B	$765.5M	$743.6M
YoY Change	-1.74%	18.57%	59.33%
Total Long-Term Liabilities	$8.343B	$765.5M	$743.6M
YoY Change	-3.2%	18.57%	59.33%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.802B	$1.674B	$1.790B
Total Long-Term Liabilities	$8.343B	$765.5M	$743.6M
Total Liabilities	$10.23B	$10.87B	$10.87B
YoY Change	-6.23%	-3.09%	70.72%
SHAREHOLDERS EQUITY
Retained Earnings		-$3.066B	$4.095B
YoY Change		-181.9%	15.53%
Common Stock		$2.286B	$2.285B
YoY Change		2.34%	2.4%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$461.6M	-$461.5M
YoY Change		30.65%	-231.59%
Treasury Stock Shares		13.70M shares	13.70M shares
Shareholders Equity	$3.909B	$4.905B	$5.945B
YoY Change
Total Liabilities & Shareholders Equity	$14.13B	$15.81B	$16.85B
YoY Change	-10.6%	-5.52%	44.12%

Cashflow Statement

Concept	2013	2012 Q4	2012 Q3
OPERATING ACTIVITIES
Net Income	-$524.9M	-$1.006B	$42.90M
YoY Change	-10.38%	-552.34%	-84.34%
Depreciation, Depletion And Amortization	$740.3M	$192.7M	$172.5M
YoY Change	11.59%	22.97%	59.13%
Cash From Operating Activities	$722.4M	$223.6M	$616.0M
YoY Change	-52.32%	-49.49%	7.15%
INVESTING ACTIVITIES
Capital Expenditures	$328.4M	-$253.9M	-$305.7M
YoY Change	-66.69%	-13.64%	30.09%
Acquisitions	$0.00
YoY Change
Other Investing Activities	$5.800M	$83.60M	-$100.2M
YoY Change	-6.45%	-103.03%	22.2%
Cash From Investing Activities	-$515.7M	-$170.3M	-$405.9M
YoY Change	-52.78%	-94.42%	28.04%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$0.00
YoY Change	-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$321.5M	-142.5M	-51.30M
YoY Change	-51.53%	-107.1%	54.52%
NET CHANGE
Cash From Operating Activities	$722.4M	223.6M	616.0M
Cash From Investing Activities	-$515.7M	-170.3M	-405.9M
Cash From Financing Activities	-$321.5M	-142.5M	-51.30M
Net Change In Cash	-$114.8M	-89.20M	158.8M
YoY Change	-52.23%	-85.2%	-29.33%
FREE CASH FLOW
Cash From Operating Activities	$722.4M	$223.6M	$616.0M
Capital Expenditures	$328.4M	-$253.9M	-$305.7M
Free Cash Flow	$394.0M	$477.5M	$921.7M
YoY Change	-25.53%	-35.18%	13.8%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	1737700000	USD
CY2012Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	1606900000	USD
CY2012Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	0	USD
CY2013Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	0	USD
CY2012Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	555000000	USD
CY2013Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	483000000	USD
CY2013Q4	us-gaap	Accounts Receivable From Securitization AccountsReceivableFromSecuritization	100000000	USD
CY2012Q4	us-gaap	Accounts Receivable From Securitization AccountsReceivableFromSecuritization	25000000	USD
CY2013Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	557900000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	737800000	USD
CY2012Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	0	USD
CY2013Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	0	USD
CY2013	us-gaap	Accretion Expense AccretionExpense	39300000	USD
CY2012	us-gaap	Accretion Expense AccretionExpense	34300000	USD
CY2013Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	223500000	USD
CY2012Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	203800000	USD
CY2013Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	18300000	USD
CY2012Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	10600000	USD
CY2013Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	3800000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0	USD
CY2012Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	82300000	USD
CY2011	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	36200000	USD
CY2013Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	67100000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	4244500000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3629500000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	300000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	800000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-6700000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	387500000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	294800000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	335700000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-155700000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-70500000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	3100000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	3100000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	22200000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-419200000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	11000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-142400000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-67900000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2286300000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2340000000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	-4500000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	8100000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	8300000	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	7400000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	13700000	USD
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1200000	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2300000	shares
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	687500000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	615200000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	67000000	USD
CY2013	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	66500000	USD
CY2011	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	52600000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	0	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	13600000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	12800000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	15400000	USD
CY2013	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	1400000	USD
CY2012	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	37200000	USD
CY2013Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	712800000	USD
CY2012Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	687500000	USD
CY2013Q4	us-gaap	Assets Assets	14133400000	USD
CY2012Q4	us-gaap	Assets Assets	15809000000	USD
CY2011Q4	us-gaap	Assets Assets	16733000000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	1992700000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	2575500000	USD
CY2013Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	86000000	USD
CY2012Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	178300000	USD
CY2012Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Noncurrent AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	140800000	USD
CY2013Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Noncurrent AssetsOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	47400000	USD
CY2012Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	88400000	USD
CY2013Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	67000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	88000000	USD
CY2013Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	65700000	USD
CY2013	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	200000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	1600000	USD
CY2012	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	100000	USD
CY2012	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	400000	USD
CY2013	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	1400000	USD
CY2012	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	0	USD
CY2013	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	100000	USD
CY2013Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	1525400000	USD
CY2012Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	1784500000	USD
CY2011Q4	us-gaap	Business Acquisition Percentage Of Voting Interests Acquired BusinessAcquisitionPercentageOfVotingInterestsAcquired	1.00
CY2011Q4	us-gaap	Business Acquisition Percentage Of Voting Interests Acquired BusinessAcquisitionPercentageOfVotingInterestsAcquired	0.60
CY2011	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	3.55
CY2011	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	3.55
CY2011	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	1305700000	USD
CY2011	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	8618000000	USD
CY2011	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	85200000	USD
CY2013	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2012	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2013	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	120700000	USD
CY2011	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-51200000	USD
CY2012	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-104700000	USD
CY2012Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	104600000	USD
CY2013Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	30500000	USD
CY2012Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	162500000	USD
CY2013Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	175100000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	37600000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	19700000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	500000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	500000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	1600000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	4200000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	11100000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	7100000	USD
CY2013Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	30500000	USD
CY2012Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	83300000	USD
CY2013Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	111300000	USD
CY2011Q4	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	261200000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	558800000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	444000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1295200000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	799100000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-114800000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-496100000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-240300000	USD
CY2012	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-22000000	USD
CY2013	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-1500000	USD
CY2011	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-70600000	USD
CY2012	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-84700000	USD
CY2013	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-57700000	USD
CY2011	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-18900000	USD
CY2013	us-gaap	Coal Products And Services Revenue CoalProductsAndServicesRevenue	6380000000	USD
CY2011	us-gaap	Coal Products And Services Revenue CoalProductsAndServicesRevenue	7013000000	USD
CY2012	us-gaap	Coal Products And Services Revenue CoalProductsAndServicesRevenue	7041700000	USD
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.340
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.340
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.340
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	800000000	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	268600000	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	271100000	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	270100000	shares
CY2010Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	270200000	shares
CY2013	us-gaap	Common Stock Voting Rights CommonStockVotingRights	one vote per share
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-432300000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-955100000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	883200000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	12300000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-11400000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	10600000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	871800000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-942800000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-421700000	USD
CY2012	us-gaap	Costmethod Investments Other Than Temporary Impairment CostmethodInvestmentsOtherThanTemporaryImpairment	39400000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	116800000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	103400000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-47900000	USD
CY2013	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	38400000	USD
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	127600000	USD
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	58900000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	174500000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	256600000	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-14200000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12200000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12200000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-4700000	USD
CY2013Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	6002400000	USD
CY2012Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	6252900000	USD
CY2013Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	732500000	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	84200000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4800000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	138000000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-32700000	USD
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	42800000	USD
CY2012	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	28800000	USD
CY2013	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-440300000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	188700000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-434100000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	5700000	USD
CY2012Q4	us-gaap	Deferred Income Taxes And Other Tax Liabilities Noncurrent DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent	-577300000	USD
CY2013Q4	us-gaap	Deferred Income Taxes And Other Tax Liabilities Noncurrent DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent	-33100000	USD
CY2011	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	180600000	USD
CY2013	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-434100000	USD
CY2012	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-2600000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1400000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	9600000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7900000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	66200000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	2854400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	3214900000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	33300000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-520900000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	56400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	66400000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	0	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	7800000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1558000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1390100000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	1034500000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	40300000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	64400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	96400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	271200000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	74700000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards General Business DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness	71100000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	64700000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	88500000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	10400000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	15700000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	309900000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	473300000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	141600000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	137900000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	656400000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	714900000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1893500000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1547500000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	0	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	0	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	37500000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	11400000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	132800000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	131800000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	577300000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	40900000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1596900000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1322300000	USD
CY2013	us-gaap	Defined Benefit Plan Future Amortization Of Prior Service Cost Credit DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit	1400000	USD
CY2012	us-gaap	Defined Benefit Plan Future Amortization Of Prior Service Cost Credit DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit	-20100000	USD
CY2011	us-gaap	Defined Benefit Plan Future Amortization Of Prior Service Cost Credit DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit	-900000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	740300000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	663400000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	474300000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	174300000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	400000000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	384900000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-500000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-4700000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	4800000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-585300000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	162500000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	223600000	USD
CY2013	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-329700000	USD
CY2011	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-88800000	USD
CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-163900000	USD
CY2011	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-22300000	USD
CY2013	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-103100000	USD
CY2012	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-59700000	USD
CY2012Q4	us-gaap	Disposal Group Including Discontinued Operation Other Current Assets DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets	37500000	USD
CY2013Q4	us-gaap	Disposal Group Including Discontinued Operation Other Current Assets DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets	38600000	USD
CY2012Q4	us-gaap	Disposal Group Including Discontinued Operation Other Noncurrent Liabilities DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities	27100000	USD
CY2013Q4	us-gaap	Disposal Group Including Discontinued Operation Other Noncurrent Liabilities DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities	90200000	USD
CY2013	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	136500000	USD
CY2012	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	229100000	USD
CY2011	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	200100000	USD
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	92100000	USD
CY2012	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	91900000	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	91700000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.97
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.53
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.19
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.19
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.52
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.97
CY2013Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	248000000	USD
CY2012Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	256800000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	7300000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	9400000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	11100000	USD
CY2013Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	29500000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y0M
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	16300000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	16700000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	18800000	USD
CY2013	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	43200000	USD
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	298600000	USD
CY2013Q4	us-gaap	Equity Method Investments EquityMethodInvestments	180100000	USD
CY2013	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	8300000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	8100000	USD
CY2013Q4	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
CY2012Q4	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
CY2013Q4	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2012Q4	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2011	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	76900000	USD
CY2012	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	17100000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	52600000	USD
CY2011	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	31700000	USD
CY2013	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	40300000	USD
CY2013Q1	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-900000	USD
CY2012Q4	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-500000	USD
CY2013Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-4500000	USD
CY2012Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2800000	USD
CY2013Q3	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-11500000	USD
CY2013	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2013Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	2451700000	USD
CY2012Q4	us-gaap	Hedging Liabilities Current HedgingLiabilitiesCurrent	5700000	USD
CY2013Q4	us-gaap	Hedging Liabilities Current HedgingLiabilitiesCurrent	213900000	USD
CY2013Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	USD
CY2012Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	4800000	USD
CY2011	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2013	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	463600000	USD
CY2012	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	806700000	USD
CY2012	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	26900000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1024200000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-481500000	USD
CY2013	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-298300000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	818000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1049100000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	220600000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-208600000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1376000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-734300000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-954900000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-1257700000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	558000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-470900000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-286000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1012800000	USD
CY2013Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-10300000	USD
CY2013Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	101400000	USD
CY2013Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-401100000	USD
CY2013Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	24000000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	122900000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-991300000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	183000000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	214500000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.80
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.78
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.12
CY2013Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.39
CY2013Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.05
CY2013Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.06
CY2013Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.52
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.65
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-3.73
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.46
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.78
CY2013	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.12
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.80
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.77
CY2013Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.06
CY2013Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.52
CY2013Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.05
CY2013Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.39
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-3.73
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.46
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.65
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.78
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-66500000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-226600000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-104200000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.25
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.85
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.39
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.25
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.39
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.85
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-19200000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-40200000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-61200000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-448300000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	363200000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	262300000	USD
CY2012	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-59600000	USD
CY2013	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-29400000	USD
CY2013	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	62700000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-73000000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-257000000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	480800000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-69400000	USD
CY2012	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	521500000	USD
CY2011	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-91600000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	15400000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-70800000	USD
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-72700000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-9900000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	21100000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-30200000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	0	USD
CY2012	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-118100000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	0	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-200000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1100000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	12300000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	18900000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	17400000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	17800000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	130500000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	274000000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	81900000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-87800000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-108900000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	97500000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	104800000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	285300000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-221000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable From Securitization IncreaseDecreaseInAccountsReceivableFromSecuritization	-125000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable From Securitization IncreaseDecreaseInAccountsReceivableFromSecuritization	75000000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable From Securitization IncreaseDecreaseInAccountsReceivableFromSecuritization	0	USD
CY2012	us-gaap	Increase Decrease In Asset Retirement Obligations IncreaseDecreaseInAssetRetirementObligations	46400000	USD
CY2011	us-gaap	Increase Decrease In Asset Retirement Obligations IncreaseDecreaseInAssetRetirementObligations	30400000	USD
CY2013Q4	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	166800000	USD
CY2013	us-gaap	Increase Decrease In Asset Retirement Obligations IncreaseDecreaseInAssetRetirementObligations	45500000	USD
CY2013	us-gaap	Increase Decrease In Due From Related Parties IncreaseDecreaseInDueFromRelatedParties	42100000	USD
CY2012	us-gaap	Increase Decrease In Due From Related Parties IncreaseDecreaseInDueFromRelatedParties	148000000	USD
CY2011	us-gaap	Increase Decrease In Due From Related Parties IncreaseDecreaseInDueFromRelatedParties	371300000	USD
CY2012	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	110800000	USD
CY2013	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	25200000	USD
CY2011	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	331700000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-50400000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-112900000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	39900000	USD
CY2011	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-27400000	USD
CY2013	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	3100000	USD
CY2012	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	10300000	USD
CY2011	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	35400000	USD
CY2012	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	38900000	USD
CY2013	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	17000000	USD
CY2013	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	7300000	USD
CY2012	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	9400000	USD
CY2011	us-gaap	Increase Decrease In Workers Compensation Liabilities IncreaseDecreaseInWorkersCompensationLiabilities	10400000	USD
CY2011	us-gaap	Interest Expense InterestExpense	238600000	USD
CY2013	us-gaap	Interest Expense InterestExpense	425200000	USD
CY2012	us-gaap	Interest Expense InterestExpense	405600000	USD
CY2013	us-gaap	Interest Paid InterestPaid	388200000	USD
CY2011	us-gaap	Interest Paid InterestPaid	205300000	USD
CY2012	us-gaap	Interest Paid InterestPaid	396100000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	47500000	USD
CY2013Q4	us-gaap	Interest Payable Current InterestPayableCurrent	47900000	USD
CY2012Q4	us-gaap	Inventory Net InventoryNet	548400000	USD
CY2013Q4	us-gaap	Inventory Net InventoryNet	506700000	USD
CY2012Q4	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	157600000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	24500000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	18900000	USD
CY2013	us-gaap	Investment Income Interest InvestmentIncomeInterest	15700000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	247500000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	305900000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	170600000	USD
CY2013Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	94700000	USD
CY2013Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	79700000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	10870200000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	10185500000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	14133400000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	15809000000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1674100000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1775500000	USD
CY2012Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	60400000	USD
CY2013Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	218000000	USD
CY2013Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	127800000	USD
CY2012Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	33300000	USD
CY2013Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	5970700000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	6205100000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	47800000	USD
CY2013Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	31700000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	3742400000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	31700000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1530800000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	12000000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	666300000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	19200000	USD
CY2013Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	2777500000	USD
CY2012Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	2699000000	USD
CY2013	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	21500000	USD
CY2012	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	35500000	USD
CY2011	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	0	USD
CY2013Q4	us-gaap	Mineral Rights MineralRights	5100000000	USD
CY2012Q4	us-gaap	Mineral Rights MineralRights	5200000000	USD
CY2013Q4	us-gaap	Minority Interest MinorityInterest	39200000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	33900000	USD
CY2012	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	7400000	USD
CY2013	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	7000000	USD
CY2011	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	15900000	USD
CY2013	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	0	USD
CY2012	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	-49800000	USD
CY2011	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	0	USD
CY2013	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:9.5pt;"><font style="font-family:Arial;font-size:9.5pt;font-style:italic;font-weight:bold;">Description of Business</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:24px;font-size:9.5pt;"><font style="font-family:Arial;font-size:9.5pt;">The Company is engaged in the mining of thermal coal for sale primarily to electric utilities and metallurgical coal for sale to industrial customers. The Company’s mining operations are located in the United States (U.S.) and Australia, including an equity-affiliate mining operation in Australia. The Company also markets and brokers coal from other coal producers, both as principal and agent, and trades coal and freight-related contracts through trading and business offices in China, Australia, the United Kingdom, Germany, Singapore, India, Indonesia and the U.S. The Company’s other energy-related commercial activities include participating in operations of a mine-mouth coal-fueled generating plant, managing its coal reserve and real estate holdings and supporting the development of Btu Conversion and clean coal technologies. </font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:9.5pt;"><font style="font-family:Arial;font-size:9.5pt;font-style:italic;font-weight:bold;"></font></div></div>
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1678500000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-663300000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-321500000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1092100000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-515700000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3807800000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-514200000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-1070100000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-3737200000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1633200000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1515100000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	722400000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1599800000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	780100000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1652100000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	957700000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	-585700000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	-524900000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	-565700000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	-23400000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	-26100000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	90300000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	172700000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	204700000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	-1006000000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	42900000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	10600000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-11400000	USD
CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12300000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-586400000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-525700000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	952800000	USD
CY2012	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	0	USD
CY2011	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	1994800000	USD
CY2013	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	0	USD
CY2011	us-gaap	Nonmonetary Transaction Gain Loss Recognized On Transfer NonmonetaryTransactionGainLossRecognizedOnTransfer	37700000	USD
CY2012Q4	us-gaap	Notes Payable Related Parties Noncurrent NotesPayableRelatedPartiesNoncurrent	0	USD
CY2013Q4	us-gaap	Notes Payable Related Parties Noncurrent NotesPayableRelatedPartiesNoncurrent	0	USD
CY2013Q4	us-gaap	Notes Receivable Net NotesReceivableNet	351800000	USD
CY2012Q4	us-gaap	Notes Receivable Net NotesReceivableNet	391700000	USD
CY2012Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	0	USD
CY2013Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	0	USD
CY2012	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	5932700000	USD
CY2013	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	5736100000	USD
CY2011	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	5477600000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	172500000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	-324800000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	1595700000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	112200000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	26400000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	88800000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-552200000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	351300000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	266500000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	276700000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-722000000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	962500000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	207400000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-150100000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	94400000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	168400000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	182800000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	195400000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	114100000	USD
CY2013Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	267300000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	372200000	USD
CY2012	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	2400000	USD
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	621700000	USD
CY2013Q4	us-gaap	Other Assets Current OtherAssetsCurrent	381600000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1431800000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1050400000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	110900000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	19100000	USD
CY2013	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-92700000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-2200000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-700000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-2300000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-15500000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-5800000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-12300000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-6700000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	500000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	7000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	500000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	4000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-3900000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-543200000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	40900000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	51800000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-300000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-3900000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-6200000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	153400000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-74500000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-430200000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	108700000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-205200000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-75500000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-63400000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	121700000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	43900000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-21300000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-22500000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-12800000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	900000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	8500000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	209600000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	251000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	298600000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-53200000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-95000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-38200000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	350400000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-333600000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	291900000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	7000000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	500000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-6700000	USD
CY2012Q4	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	0	USD
CY2013Q4	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	20000000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1001600000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	765500000	USD
CY2013Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	900000	USD
CY2012Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	33800000	USD
CY2012	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	20700000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	15500000	USD
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	32000000	USD
CY2012	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-3300000	USD
CY2013	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-21300000	USD
CY2011	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-49000000	USD
CY2012Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	960700000	USD
CY2013Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	684000000	USD
CY2012	us-gaap	Other Restructuring Costs OtherRestructuringCosts	4300000	USD
CY2011	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	882900000	USD
CY2013	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	633700000	USD
CY2012	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	1035800000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	6600000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	6200000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	5800000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	99900000	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2012Q2	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	99900000	USD
CY2011	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	61500000	USD
CY2012	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	6900000	USD
CY2013	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	22800000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	92100000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	91700000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	91900000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2756700000	USD
CY2013	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2013	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	0	USD
CY2012	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	10700000	USD
CY2013	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	0	USD
CY2012	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	0	USD
CY2011	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	39700000	USD
CY2011	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	147700000	USD
CY2012	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	46700000	USD
CY2013	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	22800000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	328400000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	986000000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	847400000	USD
CY2012	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	4800000	USD
CY2011	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	100000000	USD
CY2013	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	USD
CY2013	us-gaap	Pension Expense PensionExpense	51800000	USD
CY2011	us-gaap	Pension Expense PensionExpense	-15600000	USD
CY2012	us-gaap	Pension Expense PensionExpense	32400000	USD
CY2013	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.030875
CY2013Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	1000
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	4101400000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1188000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	800000	USD
CY2012	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	0	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	100000000	USD
CY2013	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	4800000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	300000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1700000	USD
CY2012	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	46400000	USD
CY2013	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	22900000	USD
CY2011	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	104600000	USD
CY2012	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	17200000	USD
CY2013	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	22900000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	52800000	USD
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	40100000	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	178300000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	147900000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	-575100000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	946300000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	-512600000	USD
CY2013Q1	us-gaap	Profit Loss ProfitLoss	-19400000	USD
CY2013Q3	us-gaap	Profit Loss ProfitLoss	-19100000	USD
CY2013Q2	us-gaap	Profit Loss ProfitLoss	87100000	USD
CY2013Q4	us-gaap	Profit Loss ProfitLoss	-561200000	USD
CY2012Q1	us-gaap	Profit Loss ProfitLoss	178300000	USD
CY2012Q3	us-gaap	Profit Loss ProfitLoss	41600000	USD
CY2012Q4	us-gaap	Profit Loss ProfitLoss	-1002800000	USD
CY2012Q2	us-gaap	Profit Loss ProfitLoss	207800000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	11082500000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	11801700000	USD
CY2012	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	415800000	USD
CY2013	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	1390200000	USD
CY2011	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	263900000	USD
CY2012	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	929000000	USD
CY2011	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	0	USD
CY2013	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	528300000	USD
CY2012Q4	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	921300000	USD
CY2012Q3	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	7700000	USD
CY2013Q2	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	21500000	USD
CY2013Q4	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	506800000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-2449800000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-3066400000	USD
CY2012	us-gaap	Revenues Revenues	8077500000	USD
CY2013	us-gaap	Revenues Revenues	7013700000	USD
CY2011	us-gaap	Revenues Revenues	7895900000	USD
CY2013Q3	us-gaap	Revenues Revenues	1797600000	USD
CY2013Q4	us-gaap	Revenues Revenues	1742800000	USD
CY2013Q1	us-gaap	Revenues Revenues	1748000000	USD
CY2013Q2	us-gaap	Revenues Revenues	1725300000	USD
CY2012Q2	us-gaap	Revenues Revenues	1981100000	USD
CY2012Q1	us-gaap	Revenues Revenues	2020700000	USD
CY2012Q3	us-gaap	Revenues Revenues	2058800000	USD
CY2012Q4	us-gaap	Revenues Revenues	2016900000	USD
CY2013	us-gaap	Royalty Expense RoyaltyExpense	546000000	USD
CY2012	us-gaap	Royalty Expense RoyaltyExpense	637500000	USD
CY2011	us-gaap	Royalty Expense RoyaltyExpense	610600000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2400000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5515800000	USD
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	268800000	USD
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	268200000	USD
CY2013	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	249100000	USD
CY2012	us-gaap	Severance Costs1 SeveranceCosts1	6700000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	43900000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	45400000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	50900000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	14000000	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	9400000	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	10300000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4200000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	900000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	700000	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1500000	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1000000	shares
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2011	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2012	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	300000	shares
CY2013	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	500000	shares
CY2011	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	200000	shares
CY2011	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	300000	shares
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	100000	shares
CY2012	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	200000	shares
CY2011	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	6300000	USD
CY2012	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	7000000	USD
CY2013	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	6300000	USD
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	46100000	USD
CY2011	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	4800000	USD
CY2012	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	-4200000	shares
CY2013	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2011	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	4904900000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	3908700000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4938800000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3947900000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4689300000	USD
CY2012	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	833600000	USD
CY2013	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	463600000	USD
CY2011	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	0	USD
CY2014	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	20300000	USD
CY2011	us-gaap	Translation Adjustment Functional To Reporting Currency Loss Gain On Reclassified Of Earnings Net Of Tax TranslationAdjustmentFunctionalToReportingCurrencyLossGainOnReclassifiedOfEarningsNetOfTax	0	USD
CY2013	us-gaap	Translation Adjustment Functional To Reporting Currency Loss Gain On Reclassified Of Earnings Net Of Tax TranslationAdjustmentFunctionalToReportingCurrencyLossGainOnReclassifiedOfEarningsNetOfTax	0	USD
CY2012	us-gaap	Translation Adjustment Functional To Reporting Currency Loss Gain On Reclassified Of Earnings Net Of Tax TranslationAdjustmentFunctionalToReportingCurrencyLossGainOnReclassifiedOfEarningsNetOfTax	0	USD
CY2013Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	13800000	shares
CY2012Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	13700000	shares
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	461600000	USD
CY2013Q4	us-gaap	Treasury Stock Value TreasuryStockValue	464700000	USD
CY2006	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	99800000	USD
CY2013	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	299600000	USD
CY2008	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	199800000	USD
CY2011	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	5300000	USD
CY2013	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	800000	USD
CY2012	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	700000	USD
CY2012	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2011	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2013	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	111000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	119600000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	122800000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	143900000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2013	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	49000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	17400000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	6300000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5200000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	63800000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	31900000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	3400000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	11400000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	47400000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	21200000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-36000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	11400000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:9.5pt;"><font style="font-family:Arial;font-size:9.5pt;font-style:italic;font-weight:bold;">Use of Estimates in the Preparation of the Consolidated Financial Statements</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:24px;font-size:9.5pt;"><font style="font-family:Arial;font-size:9.5pt;">The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:9.5pt;"><font style="font-family:Arial;font-size:9.5pt;font-style:italic;font-weight:bold;"></font></div></div>
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2011	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1200000	shares
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	268000000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	267100000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	270300000	shares
CY2013Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	267500000	shares
CY2013Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	267300000	shares
CY2013Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	267700000	shares
CY2013Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	266900000	shares
CY2012Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	269800000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	266800000	shares
CY2012Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	270900000	shares
CY2012Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	266300000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	269100000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	267100000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	268000000	shares
CY2013Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	267200000	shares
CY2013Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	266900000	shares
CY2013Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	266900000	shares
CY2013Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	267300000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	266200000	shares
CY2012Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	270100000	shares
CY2012Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	269200000	shares
CY2012Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	266300000	shares
CY2013Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	10000000	USD
CY2012Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	18400000	USD
CY2013Q4	btu	Ato Proposed Assessment Interest ATOProposedAssessmentInterest	7800000	USD
CY2013Q4	btu	Ato Settlement Deposit ATOSettlementDeposit	32700000	USD
CY2012	btu	Acceleration Of Asset Retirement Obligations AccelerationOfAssetRetirementObligations	7100000	USD
CY2012Q4	btu	Accrued Health Care AccruedHealthCare	21300000	USD
CY2013Q4	btu	Accrued Health Care AccruedHealthCare	7100000	USD
CY2012Q4	btu	Accumulated Other Comprehensive Income Loss Acturial Loss Associated With Workers Compensation Obligation Net Of Tax AccumulatedOtherComprehensiveIncomeLossActurialLossAssociatedWithWorkersCompensationObligationNetOfTax	-411700000	USD
CY2010Q4	btu	Accumulated Other Comprehensive Income Loss Acturial Loss Associated With Workers Compensation Obligation Net Of Tax AccumulatedOtherComprehensiveIncomeLossActurialLossAssociatedWithWorkersCompensationObligationNetOfTax	-353000000	USD
CY2013Q4	btu	Accumulated Other Comprehensive Income Loss Acturial Loss Associated With Workers Compensation Obligation Net Of Tax AccumulatedOtherComprehensiveIncomeLossActurialLossAssociatedWithWorkersCompensationObligationNetOfTax	-205800000	USD
CY2011Q4	btu	Accumulated Other Comprehensive Income Loss Acturial Loss Associated With Workers Compensation Obligation Net Of Tax AccumulatedOtherComprehensiveIncomeLossActurialLossAssociatedWithWorkersCompensationObligationNetOfTax	-464900000	USD
CY2011Q4	btu	Accumulated Other Comprehensive Income Loss Prior Service Cost Credit Arising During Period Net Of Tax AccumulatedOtherComprehensiveIncomeLossPriorServiceCostCreditArisingDuringPeriodNetOfTax	-9600000	USD
CY2010Q4	btu	Accumulated Other Comprehensive Income Loss Prior Service Cost Credit Arising During Period Net Of Tax AccumulatedOtherComprehensiveIncomeLossPriorServiceCostCreditArisingDuringPeriodNetOfTax	-12800000	USD
CY2013Q4	btu	Accumulated Other Comprehensive Income Loss Prior Service Cost Credit Arising During Period Net Of Tax AccumulatedOtherComprehensiveIncomeLossPriorServiceCostCreditArisingDuringPeriodNetOfTax	12000000	USD
CY2012Q4	btu	Accumulated Other Comprehensive Income Loss Prior Service Cost Credit Arising During Period Net Of Tax AccumulatedOtherComprehensiveIncomeLossPriorServiceCostCreditArisingDuringPeriodNetOfTax	12700000	USD
CY2013	btu	Accumulated Other Comprehensive Loss Net Change In Fair Value Of Cash Flow Hedges AccumulatedOtherComprehensiveLossNetChangeInFairValueOfCashFlowHedges	-345900000	USD
CY2011	btu	Accumulated Other Comprehensive Loss Net Change In Fair Value Of Cash Flow Hedges AccumulatedOtherComprehensiveLossNetChangeInFairValueOfCashFlowHedges	286100000	USD
CY2012	btu	Accumulated Other Comprehensive Loss Net Change In Fair Value Of Cash Flow Hedges AccumulatedOtherComprehensiveLossNetChangeInFairValueOfCashFlowHedges	334900000	USD
CY2013Q4	btu	Acquiredinterestinmineralrights Acquiredinterestinmineralrights	1300000000	USD
CY2012Q4	btu	Acquiredinterestinmineralrights Acquiredinterestinmineralrights	1300000000	USD
CY2013	btu	Additional Cash Upon Collection Of Underlying Receivables AdditionalCashUponCollectionOfUnderlyingReceivables	1347900000	USD
CY2011	btu	Additional Discretionary Contributions To Defined Contribution Pension Plans AdditionalDiscretionaryContributionsToDefinedContributionPensionPlans	-20000000	USD
CY2012	btu	Additional Discretionary Contributions To Defined Contribution Pension Plans AdditionalDiscretionaryContributionsToDefinedContributionPensionPlans	-22500000	USD
CY2013	btu	Additional Discretionary Contributions To Defined Contribution Pension Plans AdditionalDiscretionaryContributionsToDefinedContributionPensionPlans	-16500000	USD
CY2013Q4	btu	Additionalcashpaymentof4.1millionrelatedtopotential Class Bshareholderdividends Additionalcashpaymentof4.1millionrelatedtopotentialClassBshareholderdividends	4100000	USD
CY2012	btu	Aggregate Received From Alpha For Reimbursement Payment And First True Up Payment AggregateReceivedFromAlphaForReimbursementPaymentAndFirstTrueUpPayment	21300000	USD
CY2013Q4	btu	Amount Available For Repurchase Of Shares Under Share Repurchase Program AmountAvailableForRepurchaseOfSharesUnderShareRepurchaseProgram	700400000	USD
CY2013Q4	btu	Amount Available Under Securitization Program AmountAvailableUnderSecuritizationProgram	117200000	USD
CY2013Q4	btu	Amount In Letters Of Credit And Surety Bonds Related To Collateral For Surety Companies Road Maintenance Performance Guarantees And Other Operations AmountInLettersOfCreditAndSuretyBondsRelatedToCollateralForSuretyCompaniesRoadMaintenancePerformanceGuaranteesAndOtherOperations	176000000	USD
CY2013Q4	btu	Amountrecordedinaccumulatedpostretirementhealthcarebenefitobligationsto Patriot AmountrecordedinaccumulatedpostretirementhealthcarebenefitobligationstoPatriot	260700000	USD
CY2011	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
CY2015	btu	Annual Coal Reserve Payments Pursuant To Belle Ayr North Lease AnnualCoalReservePaymentsPursuantToBelleAyrNorthLease	42100000	USD
CY2014	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 Caballo West Lease AnnualCoalReservePaymentsPursuantToCaballoWestLease	28600000	USD
CY2012	btu	Annual Coal Reserve Payments Pursuant To Caballo West Lease AnnualCoalReservePaymentsPursuantToCaballoWestLease	28600000	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 True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2016	btu	Annual True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2013	btu	Annual True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2015	btu	Annual True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2014	btu	Annual True Up Payments For Excess Of110 Bid Price Versus095 Under Transferred Lease AnnualTrueUpPaymentsForExcessOf110BidPriceVersus095UnderTransferredLease	3900000	USD
CY2012	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
CY2013	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
CY2015	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
CY2014	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
CY2016	btu	Annualpaymentsoncoalreserves2012 To2016 Annualpaymentsoncoalreserves2012To2016	247900000	USD
CY2013Q4	btu	Asset Retirement Obligation Active Locations AssetRetirementObligationActiveLocations	660800000	USD
CY2012Q4	btu	Asset Retirement Obligation Active Locations AssetRetirementObligationActiveLocations	629100000	USD
CY2012Q4	btu	Asset Retirement Obligation Closed Or Inactive Locations AssetRetirementObligationClosedOrInactiveLocations	58400000	USD
CY2013Q4	btu	Asset Retirement Obligation Closed Or Inactive Locations AssetRetirementObligationClosedOrInactiveLocations	52000000	USD
CY2013Q4	btu	Assets From Coal Trading Activities Net AssetsFromCoalTradingActivitiesNet	36100000	USD
CY2012Q4	btu	Assets From Coal Trading Activities Net AssetsFromCoalTradingActivitiesNet	52400000	USD
CY2013Q4	btu	Ato Proposed Assessment Penalties And Interest AtoProposedAssessmentPenaltiesAndInterest	28100000	USD
CY2013Q4	btu	Ato Proposed Assessment Tax AtoProposedAssessmentTax	20300000	USD
CY2013	btu	Australia Mining Lease Terms AustraliaMiningLeaseTerms	up to 21 years
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
CY2011Q4	btu	Business Acquisition Other Acquisitions BusinessAcquisitionOtherAcquisitions	2000000000	USD
CY2011Q4	btu	Business Acquisition Percentage Of Voting Interests Acquired By Other Company BusinessAcquisitionPercentageOfVotingInterestsAcquiredByOtherCompany	0.40
CY2011Q4	btu	Business Acquisition Percentage Of Voting Interests Acquired By Other Company BusinessAcquisitionPercentageOfVotingInterestsAcquiredByOtherCompany	0.40
CY2011Q4	btu	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Investments And Other Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentsAndOtherAssets	368900000	USD
CY2012Q1	btu	Business Combinations Recognized Identifiable Assets Acquired And Liabilities Assumed Noncontrolling Interest BusinessCombinationsRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncontrollingInterest	39000000	USD
CY2013	btu	Cash Up Front From Sale Of Receivables CashUpFrontFromSaleOfReceivables	2719100000	USD
CY2013	btu	Change In Unreconized Tax Benefit ChangeInUnreconizedTaxBenefit	21100000	USD
CY2012	btu	Changes In Tax Reserves ChangesInTaxReserves	24500000	USD
CY2011	btu	Changes In Tax Reserves ChangesInTaxReserves	14700000	USD
CY2013	btu	Changes In Tax Reserves ChangesInTaxReserves	8800000	USD
CY2013	btu	Chargerecordedforprejudgementinterest Chargerecordedforprejudgementinterest	6900000	USD
CY2013	btu	Chargerecordedforsettlementdamages Chargerecordedforsettlementdamages	20600000	USD
CY2013Q4	btu	Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due Thereafter CoalLeaseAndRoyaltyObligationCapitalLeasesFutureMinimumPaymentsDueThereafter	41100000	USD
CY2013Q4	btu	Coal Lease And Royalty Obligation Future Minimum Payments Due Current CoalLeaseAndRoyaltyObligationFutureMinimumPaymentsDueCurrent	285800000	USD
CY2013Q4	btu	Coal Reserves CoalReserves	6300000000	USD
CY2012Q4	btu	Coal Reserves CoalReserves	6400000000	USD
CY2013Q4	btu	Coal Reserves Not Subject To Depletion CoalReservesNotSubjectToDepletion	1900000000	USD
CY2013Q4	btu	Chargerelatedtosettlementofotherclaimsinvolvingthe Patriotbankruptcy ChargerelatedtosettlementofotherclaimsinvolvingthePatriotbankruptcy	98000000	USD
CY2013Q4	btu	Class B Shareholders Claim For Unpaid Dividends ClassBShareholdersClaimForUnpaidDividends	28000000	USD
CY2013Q4	btu	Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due CoalLeaseAndRoyaltyObligationCapitalLeasesFutureMinimumPaymentsDue	882600000	USD
CY2013Q4	btu	Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due In Five Years CoalLeaseAndRoyaltyObligationCapitalLeasesFutureMinimumPaymentsDueInFiveYears	5000000	USD
CY2013Q4	btu	Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due In Four Years CoalLeaseAndRoyaltyObligationCapitalLeasesFutureMinimumPaymentsDueInFourYears	6300000	USD
CY2013Q4	btu	Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due In Three Years CoalLeaseAndRoyaltyObligationCapitalLeasesFutureMinimumPaymentsDueInThreeYears	254200000	USD
CY2013Q4	btu	Coal Lease And Royalty Obligation Capital Leases Future Minimum Payments Due In Two Years CoalLeaseAndRoyaltyObligationCapitalLeasesFutureMinimumPaymentsDueInTwoYears	290200000	USD
CY2012Q4	btu	Coal Reserves Not Subject To Depletion CoalReservesNotSubjectToDepletion	2200000000	USD
CY2013Q4	btu	Collateralfor Letterof Credit Relatedto Workers Compensation CollateralforLetterofCreditRelatedtoWorkersCompensation	33400000	USD
CY2013Q4	btu	Common Stock Discount Under Employee Stock Purchase Plans CommonStockDiscountUnderEmployeeStockPurchasePlans	0.15
CY2013Q4	btu	Companylease Obligations Subjectto Surety Bonds CompanyleaseObligationsSubjecttoSuretyBonds	109900000	USD
CY2013	btu	Consideration Received By Company Related To Securitization Program ConsiderationReceivedByCompanyRelatedToSecuritizationProgram	4205900000	USD
CY2013	btu	Contingentleaseexpense Contingentleaseexpense	0	USD
CY2013	btu	Contributions To Joint Ventures ContributionsToJointVentures	671700000	USD
CY2012	btu	Contributions To Joint Ventures ContributionsToJointVentures	824000000	USD
CY2011	btu	Contributions To Joint Ventures ContributionsToJointVentures	145400000	USD
CY2012Q4	btu	Credit Adjusted Risk Free Interest Rates CreditAdjustedRiskFreeInterestRates	0.0628
CY2013Q4	btu	Credit Adjusted Risk Free Interest Rates CreditAdjustedRiskFreeInterestRates	0.0644
CY2011Q4	btu	Credit Adjusted Risk Free Interest Rates CreditAdjustedRiskFreeInterestRates	0.0576
CY2013Q4	btu	Creditsupportintheformofcorporateguaranteesissuedforthebenefitof Patriotbeneficiaries CreditsupportintheformofcorporateguaranteesissuedforthebenefitofPatriotbeneficiaries	31500000	USD
CY2013Q4	btu	Creditsupportintheformoflettersofcreditissuedforthebenefitof Patriotbeneficiaries CreditsupportintheformoflettersofcreditissuedforthebenefitofPatriotbeneficiaries	22400000	USD
CY2013Q4	btu	Creditsupportintheformofsuretybondsissuedforthebenefitof Patriotbeneficiaries CreditsupportintheformofsuretybondsissuedforthebenefitofPatriotbeneficiaries	87600000	USD
CY2013Q4	btu	Creditsupportintheformofsuretybondsrelatedto Patriots Coal Actobligations CreditsupportintheformofsuretybondsrelatedtoPatriotsCoalActobligations	56500000	USD
CY2013Q4	btu	Creditsupportto Patriot CreditsupporttoPatriot	141500000	USD
CY2013Q4	btu	Creditsupportto Patriotendingafterfiveyears CreditsupporttoPatriotendingafterfiveyears	100000000	USD
CY2012	btu	Decrease In Apic Due To Mcgh Nci Redemption DecreaseInApicDueToMcghNciRedemption	10800000	USD
CY2012Q4	btu	Deferred Tax Assets Financial Guarantee DeferredTaxAssetsFinancialGuarantee	18600000	USD
CY2013Q4	btu	Deferred Tax Assets Financial Guarantee DeferredTaxAssetsFinancialGuarantee	16900000	USD
CY2013Q4	btu	Deferred Tax Liabilities Investments And Other Assets DeferredTaxLiabilitiesInvestmentsAndOtherAssets	82000000	USD
CY2012Q4	btu	Deferred Tax Liabilities Investments And Other Assets DeferredTaxLiabilitiesInvestmentsAndOtherAssets	126300000	USD
	btu	Definedintervalinyearstopaydividendsonperpetualpreferredstock Definedintervalinyearstopaydividendsonperpetualpreferredstock	five
CY2011	btu	Distributions From Joint Ventures DistributionsFromJointVentures	128600000	USD
CY2012	btu	Distributions From Joint Ventures DistributionsFromJointVentures	823000000	USD
CY2013	btu	Distributions From Joint Ventures DistributionsFromJointVentures	722900000	USD
CY2013Q4	btu	Dta Lease Term DtaLeaseTerm	30
CY2013	btu	Electedmemberstoserveoncompanysboardofdirectors Electedmemberstoserveoncompanysboardofdirectors	two
CY2013	btu	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition Weighted Average EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognitionWeightedAverage	0.8	years
CY2013	btu	Employee Stock Purchase Plans Fair Value Estimation EmployeeStockPurchasePlansFairValueEstimation	estimated by adding the fair value of 0.15 of one share of stock to the fair value of 0.85 of an option on one share of stock
CY2013Q4	btu	Entity Number Of Hourly Employees EntityNumberOfHourlyEmployees	5900
CY2013Q4	btu	Equity Affiliate Receivableand Payable Rightof Offset EquityAffiliateReceivableandPayableRightofOffset	51900000	USD
CY2012Q1	btu	Equity Interest Converted From Receivable Per Court Ruling EquityInterestConvertedFromReceivablePerCourtRuling	0.90
CY2011	btu	Expenses Associated With Securitization Transactions ExpensesAssociatedWithSecuritizationTransactions	2000000	USD
CY2013	btu	Expenses Associated With Securitization Transactions ExpensesAssociatedWithSecuritizationTransactions	1500000	USD
CY2012	btu	Expenses Associated With Securitization Transactions ExpensesAssociatedWithSecuritizationTransactions	2000000	USD
CY2013Q4	btu	Fairvalueofcreditsupportto Patriot FairvalueofcreditsupporttoPatriot	28000000	USD
CY2011	btu	Federal Coal Lease Expenditure FederalCoalLeaseExpenditure	42400000	USD
CY2013	btu	Federal Coal Lease Expenditure FederalCoalLeaseExpenditure	276800000	USD
CY2012	btu	Federal Coal Lease Expenditure FederalCoalLeaseExpenditure	276500000	USD
	btu	Federal Coal Lease Term FederalCoalLeaseTerm	20	Y
CY2013	btu	Federal Mineral Lease Term FederalMineralLeaseTerm	ten years
CY2013	btu	Foreign Currency Remeasurement Gains Losses ForeignCurrencyRemeasurementGainsLosses	-34100000	USD
CY2012	btu	Foreign Currency Remeasurement Gains Losses ForeignCurrencyRemeasurementGainsLosses	-4800000	USD
CY2011	btu	Foreign Currency Remeasurement Gains Losses ForeignCurrencyRemeasurementGainsLosses	900000	USD
	btu	Fundingofthenewlyestablished Veba FundingofthenewlyestablishedVEBA	310000000	USD
CY2011	btu	Income From Continuing Operations Attributable To Common Stockholders IncomeFromContinuingOperationsAttributableToCommonStockholders	1018900000	USD
CY2012	btu	Income From Continuing Operations Attributable To Common Stockholders IncomeFromContinuingOperationsAttributableToCommonStockholders	-482200000	USD
CY2013	btu	Income From Continuing Operations Attributable To Common Stockholders IncomeFromContinuingOperationsAttributableToCommonStockholders	-299100000	USD
CY2013Q4	btu	Intereston Class Bshareholdersclaimforunpaiddividends InterestonClassBshareholdersclaimforunpaiddividends	5700000	USD
CY2013Q4	btu	Land And Coal Interests LandAndCoalInterests	11024100000	USD
CY2012Q4	btu	Land And Coal Interests LandAndCoalInterests	10947700000	USD
CY2012Q2	btu	Leasedcoalreservesadjacenttonarm Leasedcoalreservesadjacenttonarm	1100000000	T
CY2013Q4	btu	Letterof Credit Arrangementfor Workers Compensation LetterofCreditArrangementforWorkersCompensation	22500000	USD
CY2013Q4	btu	Lettersofcreditinsupportofreclamationobligationsoractivities Lettersofcreditinsupportofreclamationobligationsoractivities	17600000	USD
CY2013Q4	btu	Liabilities From Coal Trading Activities Net LiabilitiesFromCoalTradingActivitiesNet	6100000	USD
CY2012Q4	btu	Liabilities From Coal Trading Activities Net LiabilitiesFromCoalTradingActivitiesNet	19400000	USD
CY2013Q4	btu	Liabilityfor Reclamationand Bonding LiabilityforReclamationandBonding	45600000	USD
CY2011Q3	btu	Litigation Settlement Damages Awarded To Plaintiff LitigationSettlementDamagesAwardedToPlaintiff	20600000	USD
CY2011	btu	Loss From Discontinued Operations Allocated To Participating Securities LossFromDiscontinuedOperationsAllocatedToParticipatingSecurities	-400000	USD
CY2013	btu	Loss From Discontinued Operations Allocated To Participating Securities LossFromDiscontinuedOperationsAllocatedToParticipatingSecurities	0	USD
CY2012	btu	Loss From Discontinued Operations Allocated To Participating Securities LossFromDiscontinuedOperationsAllocatedToParticipatingSecurities	0	USD
CY2012	btu	Loss From Discontinued Operations Attributable To Common Stockholders After Earnings Allocated To Participating Securities LossFromDiscontinuedOperationsAttributableToCommonStockholdersAfterEarningsAllocatedToParticipatingSecurities	-104200000	USD
CY2011	btu	Loss From Discontinued Operations Attributable To Common Stockholders After Earnings Allocated To Participating Securities LossFromDiscontinuedOperationsAttributableToCommonStockholdersAfterEarningsAllocatedToParticipatingSecurities	-66100000	USD
CY2013	btu	Loss From Discontinued Operations Attributable To Common Stockholders After Earnings Allocated To Participating Securities LossFromDiscontinuedOperationsAttributableToCommonStockholdersAfterEarningsAllocatedToParticipatingSecurities	-226600000	USD
CY2013	btu	Loss From Equity Affiliates Amortization Of Basis Difference LossFromEquityAffiliatesAmortizationOfBasisDifference	6300000	USD
CY2011	btu	Loss From Equity Affiliates Amortization Of Basis Difference LossFromEquityAffiliatesAmortizationOfBasisDifference	0	USD
CY2012	btu	Loss From Equity Affiliates Amortization Of Basis Difference LossFromEquityAffiliatesAmortizationOfBasisDifference	4600000	USD
CY2013Q4	btu	Maximum Capacity Of Securitization Program MaximumCapacityOfSecuritizationProgram	275000000	USD
CY2013	btu	Maximum Common Shares Authorized For Repurchase MaximumCommonSharesAuthorizedForRepurchase	1000000000	USD
CY2013	btu	Maximum Common Shares Authorized For Repurchase Outside Share Repurchase Program MaximumCommonSharesAuthorizedForRepurchaseOutsideShareRepurchaseProgram	100000000	USD
CY2013	btu	Maximum Employee Contribution To Employee Stock Purchase Plans Based On Compensation Amount MaximumEmployeeContributionToEmployeeStockPurchasePlansBasedOnCompensationAmount	25000	USD
CY2013Q4	btu	Maximum Employee Contribution To Employee Stock Purchase Plans Based On Compensation Pecentage MaximumEmployeeContributionToEmployeeStockPurchasePlansBasedOnCompensationPecentage	0.15
CY2012Q4	btu	Minerals Resource Rent Tax MineralsResourceRentTax	689700000	USD
CY2013Q4	btu	Minerals Resource Rent Tax MineralsResourceRentTax	993200000	USD
CY2013	btu	Mineralsresourcerenttaxbenefitexpense Mineralsresourcerenttaxbenefitexpense	87400000	USD
CY2011	btu	Mineralsresourcerenttaxbenefitexpense Mineralsresourcerenttaxbenefitexpense	0	USD
CY2012	btu	Mineralsresourcerenttaxbenefitexpense Mineralsresourcerenttaxbenefitexpense	-77200000	USD
CY2012Q4	btu	Mineralsresourcerenttaxbenefitexpense Mineralsresourcerenttaxbenefitexpense	77200000	USD
CY2013Q4	btu	Mineralsresourcerenttaxgrossdeferredliability Mineralsresourcerenttaxgrossdeferredliability	237200000	USD
CY2013Q4	btu	Mineralsresourcerenttaxgrossdeferredtaxasset Mineralsresourcerenttaxgrossdeferredtaxasset	1230400000	USD
CY2013	btu	Minimum Annual Production Of Federal Coal Mining Leases On Original Amount MinimumAnnualProductionOfFederalCoalMiningLeasesOnOriginalAmount	0.010
CY2011	btu	Minority Interest Increase From Contributions To Noncontrolling Interest Holders MinorityInterestIncreaseFromContributionsToNoncontrollingInterestHolders	1200000	USD
CY2013	btu	Monetization Of Foreign Currency Hedge Positions MonetizationOfForeignCurrencyHedgePositions	0	USD
CY2011	btu	Monetization Of Foreign Currency Hedge Positions MonetizationOfForeignCurrencyHedgePositions	0	USD
CY2012	btu	Monetization Of Foreign Currency Hedge Positions MonetizationOfForeignCurrencyHedgePositions	151800000	USD
CY2013	btu	Monthlyfederalroyaltiespayablefromsaleusingsurfaceminingmethods Monthlyfederalroyaltiespayablefromsaleusingsurfaceminingmethods	0.125
CY2013	btu	Monthlyfederalroyaltiespayableofproductionusingundergroundminingmethods Monthlyfederalroyaltiespayableofproductionusingundergroundminingmethods	0.080
CY2013Q4	btu	Nbcw Aobligationsincludedin Accumulatedothercomprehensivelossincome NBCWAobligationsincludedinAccumulatedothercomprehensivelossincome	63200000	USD
CY2011	btu	Net Assets From Coal Trading Activities NetAssetsFromCoalTradingActivities	172400000	USD
CY2013	btu	Net Assets From Coal Trading Activities NetAssetsFromCoalTradingActivities	-83700000	USD
CY2012	btu	Net Assets From Coal Trading Activities NetAssetsFromCoalTradingActivities	125200000	USD
CY2013Q4	btu	Net Tax Benefit From Asst Impairment And Mine Closure Costs NetTaxBenefitFromAsstImpairmentAndMineClosureCosts	112800000	USD
CY2012Q4	btu	Net Tax Benefit From Asst Impairment And Mine Closure Costs NetTaxBenefitFromAsstImpairmentAndMineClosureCosts	224400000	USD
CY2012Q3	btu	Net Tax Benefit From Asst Impairment And Mine Closure Costs NetTaxBenefitFromAsstImpairmentAndMineClosureCosts	2900000	USD
CY2012Q4	btu	Net Tax Benefits Related To Acquisition Restructuring NetTaxBenefitsRelatedToAcquisitionRestructuring	15000000	USD
CY2012Q2	btu	Net Tax Benefits Related To Acquisition Restructuring NetTaxBenefitsRelatedToAcquisitionRestructuring	59700000	USD
CY2012Q4	btu	Net Unrecognized Tax Benefit NetUnrecognizedTaxBenefit	119700000	USD
CY2013Q4	btu	Net Unrecognized Tax Benefit NetUnrecognizedTaxBenefit	140500000	USD
CY2012Q4	btu	Non Cash Benefit From Remeasurement Of Foreign Income Tax Accounts NonCashBenefitFromRemeasurementOfForeignIncomeTaxAccounts	-800000	USD
CY2013Q2	btu	Non Cash Benefit From Remeasurement Of Foreign Income Tax Accounts NonCashBenefitFromRemeasurementOfForeignIncomeTaxAccounts	-37100000	USD
CY2013Q3	btu	Non Cash Benefit From Remeasurement Of Foreign Income Tax Accounts NonCashBenefitFromRemeasurementOfForeignIncomeTaxAccounts	-2600000	USD
CY2012Q2	btu	Non Cash Benefit From Remeasurement Of Foreign Income Tax Accounts NonCashBenefitFromRemeasurementOfForeignIncomeTaxAccounts	-13800000	USD
CY2013Q4	btu	Non Cash Benefit From Remeasurement Of Foreign Income Tax Accounts NonCashBenefitFromRemeasurementOfForeignIncomeTaxAccounts	-6200000	USD
CY2013Q1	btu	Non Cash Expense From Remeasurement Of Foreign Income Tax Accounts NonCashExpenseFromRemeasurementOfForeignIncomeTaxAccounts	1600000	USD
CY2012Q3	btu	Non Cash Expense From Remeasurement Of Foreign Income Tax Accounts NonCashExpenseFromRemeasurementOfForeignIncomeTaxAccounts	13600000	USD
CY2012Q1	btu	Non Cash Expense From Remeasurement Of Foreign Income Tax Accounts NonCashExpenseFromRemeasurementOfForeignIncomeTaxAccounts	8900000	USD
CY2013Q4	btu	Non Collected Receivables NonCollectedReceivables	138900000	USD
CY2011	btu	Noncontrolling Interest Increase From Business Combination As Of Control Date NoncontrollingInterestIncreaseFromBusinessCombinationAsOfControlDate	2011900000	USD
CY2012	btu	Noncontrolling Interest Increase From Business Combination As Of Control Date NoncontrollingInterestIncreaseFromBusinessCombinationAsOfControlDate	39000000	USD
CY2012Q3	btu	Number Of Annual True Up Payments NumberOfAnnualTrueUpPayments	5
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
CY2013	btu	Number Of Defined Contribution Plans NumberOfDefinedContributionPlans	3	plans
CY2012Q4	btu	Number Of Individual Plaintiffs Involved In Class Action Lawsuit NumberOfIndividualPlaintiffsInvolvedInClassActionLawsuit	8	plaintiffs
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
CY2013Q4	btu	Number Of Us Mines Represented By Unions NumberOfUsMinesRepresentedByUnions	1
CY2013Q4	btu	Numberof Us Preparation Plants Representedby Unions NumberofUSPreparationPlantsRepresentedbyUnions	1
CY2013	btu	Numberoffailedamountofdividendsonpreferredstock Numberoffailedamountofdividendsonpreferredstock	six
CY2011	btu	Other Comprehensive Income From Investment In Subsidiaries OtherComprehensiveIncomeFromInvestmentInSubsidiaries	0	USD
CY2013	btu	Other Comprehensive Income From Investment In Subsidiaries OtherComprehensiveIncomeFromInvestmentInSubsidiaries	0	USD
CY2012	btu	Other Comprehensive Income From Investment In Subsidiaries OtherComprehensiveIncomeFromInvestmentInSubsidiaries	0	USD
CY2012	btu	Other Comprehensive Income Loss Current Period Change Net Of Tax OtherComprehensiveIncomeLossCurrentPeriodChangeNetOfTax	39200000	USD
CY2011	btu	Other Comprehensive Income Loss Current Period Change Net Of Tax OtherComprehensiveIncomeLossCurrentPeriodChangeNetOfTax	-149200000	USD
CY2013	btu	Other Comprehensive Income Loss Current Period Change Net Of Tax OtherComprehensiveIncomeLossCurrentPeriodChangeNetOfTax	16800000	USD
CY2011	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	40500000	USD
CY2013	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	95700000	USD
CY2012	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	55400000	USD
CY2013	btu	Other Comprehensive Income Reclassification Adjustment Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentNetOfTax	-101100000	USD
CY2012	btu	Other Comprehensive Income Reclassification Adjustment Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentNetOfTax	-220700000	USD
CY2011	btu	Other Comprehensive Income Reclassification Adjustment Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentNetOfTax	-211400000	USD
CY2012Q4	btu	Other Noncurrent Liability OtherNoncurrentLiability	2413700000	USD
CY2013Q4	btu	Other Noncurrent Liability OtherNoncurrentLiability	2398400000	USD
CY2013	btu	Paid Discretionary Contributions To Defined Contribution Pension Plans Company Match PaidDiscretionaryContributionsToDefinedContributionPensionPlansCompanyMatch	-46400000	USD
CY2011	btu	Paid Discretionary Contributions To Defined Contribution Pension Plans Company Match PaidDiscretionaryContributionsToDefinedContributionPensionPlansCompanyMatch	-54500000	USD
CY2012	btu	Paid Discretionary Contributions To Defined Contribution Pension Plans Company Match PaidDiscretionaryContributionsToDefinedContributionPensionPlansCompanyMatch	-51100000	USD
CY2011	btu	Payments For Repurchase Of Common Stock Relinquished For Tax Withholding PaymentsForRepurchaseOfCommonStockRelinquishedForTaxWithholding	18700000	USD
CY2012	btu	Payments For Repurchase Of Common Stock Relinquished For Tax Withholding PaymentsForRepurchaseOfCommonStockRelinquishedForTaxWithholding	8400000	USD
CY2013	btu	Payments For Repurchase Of Common Stock Relinquished For Tax Withholding PaymentsForRepurchaseOfCommonStockRelinquishedForTaxWithholding	3100000	USD
CY2013Q4	btu	Paymentstothe Veb Atosettletheaccumulatedpostretirementhealthcarebenefitobligations PaymentstotheVEBAtosettletheaccumulatedpostretirementhealthcarebenefitobligations	240000000	USD
CY2013Q4	btu	Paymentto Patriotbasedontheconstructofthenegotiatedsettlement PaymenttoPatriotbasedontheconstructofthenegotiatedsettlement	70000000	USD
CY2013Q4	btu	Percentage Of Coal Production Generated By Hourly Employees Represented By Organized Labor Unions PercentageOfCoalProductionGeneratedByHourlyEmployeesRepresentedByOrganizedLaborUnions	0.19
CY2013Q4	btu	Percentage Of Employees Represented By Organized Labor Unions PercentageOfEmployeesRepresentedByOrganizedLaborUnions	0.35
CY2013	btu	Percentofownershipofcertain U.S.Subsidiariesthatfullyandunconditionallyguaranteethe Senior Notes PercentofownershipofcertainU.S.subsidiariesthatfullyandunconditionallyguaranteetheSeniorNotes	1.0000
CY2013	btu	Period Considered To Treat Short Term Highly Liquid Investments As Cash Equivalents PeriodConsideredToTreatShortTermHighlyLiquidInvestmentsAsCashEquivalents	three months or less
CY2013	btu	Period For Payment Of Dividend On Perpetual Preferred Stock PeriodForPaymentOfDividendOnPerpetualPreferredStock	10
CY2013	btu	Periodtoredetermineroyaltyrateson Indiantribeleasedcoalreserves PeriodtoredetermineroyaltyratesonIndiantribeleasedcoalreserves	every ten years
CY2013Q4	btu	Potential Exposure From Patriot Bankruptcy PotentialExposureFromPatriotBankruptcy	150000000	USD
CY2007Q4	btu	Proven And Probable Coal Reserves Related To Patriot ProvenAndProbableCoalReservesRelatedToPatriot	1200000000	T
CY2012Q4	btu	Raw Coal RawCoal	164300000	USD
CY2013Q4	btu	Raw Coal RawCoal	122600000	USD
CY2013	btu	Reallocation Adjustment For Participatory Securities ReallocationAdjustmentForParticipatorySecurities	100000	USD
CY2012	btu	Reallocation Adjustment For Participatory Securities ReallocationAdjustmentForParticipatorySecurities	100000	USD
CY2011	btu	Reallocation Adjustment For Participatory Securities ReallocationAdjustmentForParticipatorySecurities	100000	USD
CY2013Q4	btu	Reclassification Of Self Bonding In Certain States In Which Company Qualifies ReclassificationOfSelfBondingInCertainStatesInWhichCompanyQualifies	1365100000	USD
CY2012Q4	btu	Reclassification Of Self Bonding In Certain States In Which Company Qualifies ReclassificationOfSelfBondingInCertainStatesInWhichCompanyQualifies	1275800000	USD
CY2013	btu	Redemption Price Of Bonds As Percentage Of Principal Amount Plus Make Whole Premium And Any Accrued Unpaid Interest To Redemption Date RedemptionPriceOfBondsAsPercentageOfPrincipalAmountPlusMakeWholePremiumAndAnyAccruedUnpaidInterestToRedemptionDate	1.0000
CY2013	btu	Redemption Price Of Debt As Percentage Of Principal Amount Of Debentures RedemptionPriceOfDebtAsPercentageOfPrincipalAmountOfDebentures	1.0100
CY2012Q3	btu	Reimbursement For Difference In Federal Coal Lease Payments Made In2011 ReimbursementForDifferenceInFederalCoalLeasePaymentsMadeIn2011	13500000	USD
	btu	Remaining Annual True Up Payments Due From Alpha On November1 Of Each Of Years From2012 Through2015 RemainingAnnualTrueUpPaymentsDueFromAlphaOnNovember1OfEachOfYearsFrom2012Through2015	2
CY2012	btu	Remeasurement Of Foreign Taxes RemeasurementOfForeignTaxes	7900000	USD
CY2011	btu	Remeasurement Of Foreign Taxes RemeasurementOfForeignTaxes	-900000	USD
CY2013	btu	Remeasurement Of Foreign Taxes RemeasurementOfForeignTaxes	-44300000	USD
CY2013Q4	btu	Requisitesecurityfiledwiththecourtfor Wambo RequisitesecurityfiledwiththecourtforWambo	34900000	USD
CY2013Q4	btu	Saleable Coal SaleableCoal	217300000	USD
CY2012Q4	btu	Saleable Coal SaleableCoal	226500000	USD
CY2013	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	1047200000	USD
CY2012	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	1836500000	USD
CY2011	btu	Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization SegmentReportingInformationAdjustedEarningBeforeInterestTaxesDepreciationAndAmortization	2122600000	USD
CY2011	btu	Segment Reporting Revenue Percentage SegmentReportingRevenuePercentage	1.000
CY2012	btu	Segment Reporting Revenue Percentage SegmentReportingRevenuePercentage	1.000
CY2013	btu	Segment Reporting Revenue Percentage SegmentReportingRevenuePercentage	1.000
CY2012	btu	Settlementchargesrelatedtothe Patriotbankruptcyreorganization SettlementchargesrelatedtothePatriotbankruptcyreorganization	0	USD
CY2011	btu	Settlementchargesrelatedtothe Patriotbankruptcyreorganization SettlementchargesrelatedtothePatriotbankruptcyreorganization	0	USD
CY2013	btu	Settlementchargesrelatedtothe Patriotbankruptcyreorganization SettlementchargesrelatedtothePatriotbankruptcyreorganization	30600000	USD
CY2013Q4	btu	Settlementchargesrelatedtothe Patriotbankruptcyreorganization SettlementchargesrelatedtothePatriotbankruptcyreorganization	30600000	USD
CY2013Q4	btu	Settlementchargestotal Settlementchargestotal	128600000	USD
CY2013	btu	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageFairValue	12.13	USD
CY2012	btu	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageFairValue	18.59	USD
CY2011	btu	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageFairValue	33.92	USD
CY2013	btu	Share Based Compensation Expense Net Of Tax ShareBasedCompensationExpenseNetOfTax	32100000	USD
CY2012	btu	Share Based Compensation Expense Net Of Tax ShareBasedCompensationExpenseNetOfTax	28700000	USD
CY2011	btu	Share Based Compensation Expense Net Of Tax ShareBasedCompensationExpenseNetOfTax	27600000	USD
CY2012	btu	Shares Relinquished Shares SharesRelinquishedShares	-300000	shares
CY2011	btu	Shares Relinquished Shares SharesRelinquishedShares	-300000	shares
CY2013	btu	Shares Relinquished Shares SharesRelinquishedShares	-100000	shares
CY2012Q4	btu	Surety Bonds Outstanding For Reclamation SuretyBondsOutstandingForReclamation	571600000	USD
CY2013Q4	btu	Surety Bonds Outstanding For Reclamation SuretyBondsOutstandingForReclamation	568400000	USD
CY2013Q4	btu	Take Or Pay Obligations Due In One Year TakeOrPayObligationsDueInOneYear	385800000	USD
CY2013Q4	btu	Take Or Pay Obligations Total TakeOrPayObligationsTotal	3724800000	USD
	btu	Takeorpayarrangementterms Takeorpayarrangementterms	26
CY2013	btu	Tax Benefits Recognized From Uncertain Tax Positions Measurement TaxBenefitsRecognizedFromUncertainTaxPositionsMeasurement	greater than fifty percent likelihood of being realized upon ultimate settlement
CY2013Q4	btu	Taxbenefitrelatedtothesettlementchargesrelatedtothe Patriotbankruptcyreorganization TaxbenefitrelatedtothesettlementchargesrelatedtothePatriotbankruptcyreorganization	11300000	USD
CY2013	btu	Timing Differences Between Hedge Settlement And Purchase Transaction TimingDifferencesBetweenHedgeSettlementAndPurchaseTransaction	Less than a day and up to a maximum of 30 days
CY2013Q4	btu	Totalliabilitiesrelatedtothe Patriotsettlement TotalliabilitiesrelatedtothePatriotsettlement	298100000	USD
CY2013	btu	Transactions With Affiliates Net TransactionsWithAffiliatesNet	0	USD
CY2011	btu	Transactions With Affiliates Net TransactionsWithAffiliatesNet	0	USD
CY2012	btu	Transactions With Affiliates Net TransactionsWithAffiliatesNet	0	USD
CY2013Q4	btu	Unamortized Debt Issuance Expense Which Will Be Amortized To Interest Expense Over Next Five Years UnamortizedDebtIssuanceExpenseWhichWillBeAmortizedToInterestExpenseOverNextFiveYears	69600000	USD
CY2013Q4	btu	Unrecognized Tax Benefit Recordedin Accrued Expenses UnrecognizedTaxBenefitRecordedinAccruedExpenses	20300000	USD
CY2012Q4	btu	Unrecognized Tax Benefit Recordedin Accrued Expenses UnrecognizedTaxBenefitRecordedinAccruedExpenses	0	USD
CY2012Q4	btu	Unrecognized Tax Benefit Recordedin Deferred Income Taxes UnrecognizedTaxBenefitRecordedinDeferredIncomeTaxes	0	USD
CY2013Q4	btu	Unrecognized Tax Benefit Recordedin Deferred Income Taxes UnrecognizedTaxBenefitRecordedinDeferredIncomeTaxes	90300000	USD
CY2013Q4	btu	Unrecognized Tax Benefit Recordedin Other Noncurrent Liabilities UnrecognizedTaxBenefitRecordedinOtherNoncurrentLiabilities	29900000	USD
CY2012Q4	btu	Unrecognized Tax Benefit Recordedin Other Noncurrent Liabilities UnrecognizedTaxBenefitRecordedinOtherNoncurrentLiabilities	119700000	USD
CY2013Q4	btu	Valuation Allowance Mineral Resource Rent Tax ValuationAllowanceMineralResourceRentTax	977700000	USD
CY2012Q4	btu	Valuation Allowance Mineral Resource Rent Tax ValuationAllowanceMineralResourceRentTax	766900000	USD
CY2012Q2	btu	Weightedaveragebidpricepermineableton Weightedaveragebidpricepermineableton	1.10	USD
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0001064728
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	271298814	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	8300
CY2013Q2	dei	Entity Public Float EntityPublicFloat	3900000000	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	PEABODY ENERGY CORP
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

Files In Submission

Name	View Source	Status
0001064728-14-000015-index-headers.html	Edgar Link	pending
0001064728-14-000015-index.html	Edgar Link	pending
0001064728-14-000015.txt	Edgar Link	pending
0001064728-14-000015-xbrl.zip	Edgar Link	pending
btu-20131231.xml	Edgar Link	completed
btu-20131231.xsd	Edgar Link	pending
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btu-20131231_cal.xml	Edgar Link	unprocessable
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btu-20131231_pre.xml	Edgar Link	unprocessable
btu_20131231ex21.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
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peabody201310k.gif	Edgar Link	pending
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$BTU
PEABODY ENERGY CORP Stock $btu

2013 Form 10-K Financial Statement

#000106472814000015 Filed on February 21, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BTU PEABODY ENERGY CORP Stock $btu

2013 Form 10-K Financial Statement

#000106472814000015 Filed on February 21, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BTU
PEABODY ENERGY CORP Stock $btu