$CLF
CLEVELAND-CLIFFS INC. Stock $clf

$clf Overview Financials Valuation SEC Filings Company Website

2012 Form 10-K Financial Statement

#000076406513000003 Filed on February 12, 2013

Income Statement

Concept	2012	2011 Q4	2011 Q3
Revenue	$5.873B	$1.604B	$2.089B
YoY Change	-10.53%	30.82%	55.21%
Cost Of Revenue	$4.701B	$1.124B	$1.246B
YoY Change	18.91%	38.75%	43.42%
Gross Profit	$1.172B	$480.1M	$843.1M
YoY Change	-55.11%	15.38%	76.68%
Gross Profit Margin	19.96%	29.94%	40.36%
Selling, General & Admin	$282.5M	$83.90M	$61.30M
YoY Change	13.77%	192.33%	6.98%
% of Gross Profit	24.1%	17.48%	7.27%
Research & Development	$142.8M	$25.10M	$26.60M
YoY Change	77.39%	75.52%	158.25%
% of Gross Profit	12.18%	5.23%	3.16%
Depreciation & Amortization	$525.8M	$120.6M	$119.7M
YoY Change	23.17%	45.65%	41.82%
% of Gross Profit	44.86%	25.12%	14.2%
Operating Expenses	$1.481B	$100.5M	$26.00M
YoY Change	371.47%	82.73%	-70.05%
Operating Profit	-$308.8M	$379.6M	$817.1M
YoY Change	-113.44%	5.12%	109.3%
Interest Expense	-$195.4M	-$36.60M	$49.40M
YoY Change	8041.67%	-344.0%	168.48%
% of Operating Profit		-9.64%	6.05%
Other Income/Expense, Net	-$193.0M	-$8.700M	-$54.70M
YoY Change	81.56%	-58.96%	18133.33%
Pretax Income	$838.6M	$306.1M	$762.4M
YoY Change	-44.33%	-13.75%	85.68%
Income Tax	$255.9M	$120.5M	$3.700M
% Of Pretax Income	30.52%	39.37%	0.49%
Net Earnings	-$899.4M	$185.4M	$601.2M
YoY Change	-155.55%	-51.78%	102.15%
Net Earnings / Revenue	-15.31%	11.56%	28.78%
Basic Earnings Per Share	-$6.32	$1.30	$4.17
Diluted Earnings Per Share	-$6.32	$1.30	$4.15
COMMON SHARES
Basic Shares Outstanding	142.4M shares		144.2M shares
Diluted Shares Outstanding	142.4M shares		145.0M shares

Balance Sheet

Concept	2012	2011 Q4	2011 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$195.0M	$519.0M	$545.0M
YoY Change	-62.43%	-66.88%	-43.76%
Cash & Equivalents	$195.0M	$519.3M	$545.0M
Short-Term Investments
Other Short-Term Assets	$400.0M	$166.3M	$222.0M
YoY Change	-6.98%	-31.0%	-44.36%
Inventory	$726.0M	$456.9M	$704.0M
Prepaid Expenses
Receivables	$329.0M	$287.9M	$434.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.650B	$1.911B	$1.905B
YoY Change	-13.66%	-26.04%	-5.83%
LONG-TERM ASSETS
Property, Plant & Equipment	$11.21B	$10.40B	$9.835B
YoY Change	7.72%	161.46%	152.31%
Goodwill		$1.152B
YoY Change		486.31%
Intangibles		$147.0M
YoY Change
Long-Term Investments		$504.8M	$516.0M
YoY Change		-16.01%	-1.71%
Other Assets	$421.0M	$191.2M	$302.0M
YoY Change	4.99%	2.8%	18.43%
Total Long-Term Assets	$11.93B	$12.63B	$12.04B
YoY Change	-5.59%	143.17%	138.13%
TOTAL ASSETS
Total Short-Term Assets	$1.650B	$1.911B	$1.905B
Total Long-Term Assets	$11.93B	$12.63B	$12.04B
Total Assets	$13.58B	$14.54B	$13.95B
YoY Change	-6.65%	86.95%	96.99%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$556.0M	$364.7M	$370.0M
YoY Change	52.33%	36.59%	72.9%
Accrued Expenses	$443.0M	$165.0M	$360.0M
YoY Change	15.06%	-38.2%	53.85%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$94.00M	$74.80M	$62.00M
YoY Change	25.33%
Total Short-Term Liabilities	$1.382B	$1.502B	$1.299B
YoY Change	-7.99%	45.98%	88.26%
LONG-TERM LIABILITIES
Long-Term Debt	$3.961B	$3.609B	$3.884B
YoY Change	9.75%	110.67%	126.74%
Other Long-Term Liabilities	$1.364B	$449.8M	$1.075B
YoY Change	2.63%	-60.34%	1.22%
Total Long-Term Liabilities	$5.325B	$4.059B	$4.959B
YoY Change	7.84%	42.55%	78.7%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.382B	$1.502B	$1.299B
Total Long-Term Liabilities	$5.325B	$4.059B	$4.959B
Total Liabilities	$8.942B	$7.502B	$8.222B
YoY Change	2.11%	90.79%	125.76%
SHAREHOLDERS EQUITY
Retained Earnings		$4.424B
YoY Change
Common Stock		$18.50M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)		$336.0M
YoY Change
Treasury Stock Shares		7.174M shares
Shareholders Equity	$4.633B	$5.785B	$5.723B
YoY Change
Total Liabilities & Shareholders Equity	$13.58B	$14.54B	$13.95B
YoY Change	-6.65%	86.96%	96.99%

Cashflow Statement

Concept	2012	2011 Q4	2011 Q3
OPERATING ACTIVITIES
Net Income	-$899.4M	$185.4M	$601.2M
YoY Change	-155.55%	-51.78%	102.15%
Depreciation, Depletion And Amortization	$525.8M	$120.6M	$119.7M
YoY Change	23.17%	45.65%	41.82%
Cash From Operating Activities	$514.5M	$743.1M	$820.7M
YoY Change	-77.52%	7.85%	107.61%
INVESTING ACTIVITIES
Capital Expenditures	$1.128B	-$401.8M	-$234.4M
YoY Change	28.02%	244.01%	169.12%
Acquisitions	$0.00
YoY Change	-100.0%
Other Investing Activities	-$13.10M	$16.00M	$36.60M
YoY Change	-58.68%	-61.63%	-104.31%
Cash From Investing Activities	-$961.8M	-$385.8M	-$197.8M
YoY Change	-81.87%	413.72%	-78.85%
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	$119.6M	-391.5M	-292.8M
YoY Change	-93.94%	1466.0%	-130.35%
NET CHANGE
Cash From Operating Activities	$514.5M	743.1M	820.7M
Cash From Investing Activities	-$961.8M	-385.8M	-197.8M
Cash From Financing Activities	$119.6M	-391.5M	-292.8M
Net Change In Cash	-$327.7M	-34.20M	330.1M
YoY Change	-68.51%	-105.81%	-22.29%
FREE CASH FLOW
Cash From Operating Activities	$514.5M	$743.1M	$820.7M
Capital Expenditures	$1.128B	-$401.8M	-$234.4M
Free Cash Flow	-$613.0M	$1.145B	$1.055B
YoY Change	-143.53%	42.08%	118.72%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	555500000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	287900000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	329000000	USD
CY2011Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	15500000	USD
CY2012Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	15700000	USD
CY2011Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	265400000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	28300000	USD
CY2011Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	165000000	USD
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	258900000	USD
CY2011Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	75700000	USD
CY2012Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	48100000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1291500000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1837400000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-92600000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-55600000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	45900000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1774700000	USD
CY2011Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1770800000	USD
CY2010	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	275800000	USD
CY2011	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	960900000	USD
CY2012	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	1335300000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Reallocation Of Minority Interest AdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest	-1600000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	20600000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15900000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15500000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	8100000	USD
CY2011	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	-38700000	USD
CY2011Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	406000000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
CY2012	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1049900000	USD
CY2011	us-gaap	Asset Impairment Charges AssetImpairmentCharges	27800000	USD
CY2010	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	194900000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	231100000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	162100000	USD
CY2011	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	-15700000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	-17600000	USD
CY2011	us-gaap	Asset Retirement Obligation Foreign Currency Translation AssetRetirementObligationForeignCurrencyTranslation	100000	USD
CY2012	us-gaap	Asset Retirement Obligation Foreign Currency Translation AssetRetirementObligationForeignCurrencyTranslation	300000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	700000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	-100000	USD
CY2012	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	18200000	USD
CY2011	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	3700000	USD
CY2012Q4	us-gaap	Assets Assets	13574900000	USD
CY2011Q4	us-gaap	Assets Assets	14541700000	USD
CY2010Q4	us-gaap	Assets Assets	7778200000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	1650000000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	1911200000	USD
CY2012Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	205600000	USD
CY2011Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	544200000	USD
CY2012Q4	us-gaap	Assets Held For Sale Current AssetsHeldForSaleCurrent	0	USD
CY2011Q4	us-gaap	Assets Held For Sale Current AssetsHeldForSaleCurrent	159900000	USD
CY2012	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2011	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	25400000	USD
CY2010	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2011	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	0	USD
CY2010	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	40700000	USD
CY2012	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	0	USD
CY2012	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-152500000	USD
CY2011	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-60100000	USD
CY2010	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-8900000	USD
CY2012	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	-55300000	USD
CY2010	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	-57300000	USD
CY2012Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	471700000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	371700000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	75200000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	35300000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	42100000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	57700000	USD
CY2010	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	3025100000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1656500000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1189200000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	69000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	92400000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	82000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	289700000	USD
CY2012Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	184500000	USD
CY2011Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	110600000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	519300000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	195200000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	100000000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	351200000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1045100000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-326400000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	1064000000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Commitments Fair Value Disclosure CommitmentsFairValueDisclosure	14600000000	USD
CY2011Q4	us-gaap	Commitments Fair Value Disclosure CommitmentsFairValueDisclosure	11000000000	USD
CY2012Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	11663567	shares
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.51
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.15
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.84
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2011Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	224000000	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	149195469	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	149195469	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	142495902	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	142021718	shares
CY2011Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	18500000	USD
CY2012Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	18500000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	7600000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-17600000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	800000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-1082000000	USD
CY2011	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	3953000000	USD
CY2012	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	4700600000	USD
CY2012	us-gaap	Contributions From Noncontrolling Interests ContributionsFromNoncontrollingInterests	-104400000	USD
CY2010	us-gaap	Contributions From Noncontrolling Interests ContributionsFromNoncontrollingInterests	-3000000	USD
CY2011	us-gaap	Contributions From Noncontrolling Interests ContributionsFromNoncontrollingInterests	-6300000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	246800000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	71100000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	109600000	USD
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	224700000	USD
CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	155100000	USD
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	50200000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	267300000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	474300000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	128900000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2600000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7600000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2800000	USD
CY2012Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	4054800000	USD
CY2011Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3683500000	USD
CY2012Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	5497100000	USD
CY2011Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	5447000000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	23800000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	221200000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	61100000	USD
CY2012	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-95600000	USD
CY2010	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-51100000	USD
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-95100000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	15200000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	127000000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-66600000	USD
CY2011Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	126600000	USD
CY2012Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	35900000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	5200000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1400000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	4700000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	0	USD
CY2011Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	3800000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1063500000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1606100000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	30100000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	45400000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-1006600000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-831000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	747700000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	839600000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	21900000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	105400000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	209500000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	91800000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	396400000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	260700000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	2100000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	780500000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	185000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	147100000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	44800000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	49200000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	228500000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	274900000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	5800000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	5800000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	154800000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	161200000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	87700000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	109800000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	42900000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	48200000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	140900000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	149300000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	223900000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	858400000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1754300000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1670600000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	1300000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	1600000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	13500000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	24600000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1108100000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1062400000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1345000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1350500000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	19600000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	0	USD
CY2012Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	403800000	USD
CY2011Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	394700000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	1204700000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	1114700000	USD
CY2011	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Sold During Period DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod	4000000	USD
CY2012	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Sold During Period DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod	-800000	USD
CY2011	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Still Held DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld	7000000	USD
CY2012	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Still Held DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld	21800000	USD
CY2011	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Plan Assets DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets	40200000	USD
CY2012	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Plan Assets DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets	14400000	USD
CY2011	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	37400000	USD
CY2012	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	39000000	USD
CY2011	us-gaap	Defined Benefit Plan Divestitures Plan Assets DefinedBenefitPlanDivestituresPlanAssets	-45000000	USD
CY2012	us-gaap	Defined Benefit Plan Divestitures Plan Assets DefinedBenefitPlanDivestituresPlanAssets	-27100000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	-43400000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	-5400000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	53700000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	7000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYear	22400000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	192200000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	186000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	200500000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Funded Percentage DefinedBenefitPlanFundedPercentage	0.70
CY2012	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500
CY2011	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500
CY2012	us-gaap	Depletion Depletion	209800000	USD
CY2010	us-gaap	Depletion Depletion	95500000	USD
CY2011	us-gaap	Depletion Depletion	159700000	USD
CY2012	us-gaap	Depreciation Depreciation	293500000	USD
CY2011	us-gaap	Depreciation Depreciation	237800000	USD
CY2010	us-gaap	Depreciation Depreciation	165400000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	426900000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	525800000	USD
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	322300000	USD
CY2012Q4	us-gaap	Derivative Assets DerivativeAssets	62400000	USD
CY2011Q4	us-gaap	Derivative Assets DerivativeAssets	157900000	USD
CY2011Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	82100000	USD
CY2012Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	78600000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	78600000	USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	165900000	USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	23000000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	13200000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	3300000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	18100000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	3200000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	25600000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	1900000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	1800000	USD
CY2011	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	1090000000	USD
CY2012	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	163200000	USD
CY2010	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	1131800000	USD
CY2012Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	11300000	USD
CY2011Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	19500000	USD
CY2012	us-gaap	Dividends Common Stock DividendsCommonStock	307200000	USD
CY2010	us-gaap	Dividends Common Stock DividendsCommonStock	68900000	USD
CY2011	us-gaap	Dividends Common Stock DividendsCommonStock	118900000	USD
CY2011Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.28
CY2011Q1	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.14
CY2012Q2	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.625
CY2012Q1	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.28
CY2011Q2	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.14
CY2012Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.625
CY2011Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.28
CY2012Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.625
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	11.55
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.54
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-6.32
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-11.36
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.81
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.17
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.94
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.30
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.12
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	11.48
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-6.32
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.49
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.63
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-11.36
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.81
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.11
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.30
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.15
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.92
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	24100000	USD
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1300000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-4600000	USD
CY2012Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	135600000	USD
CY2011Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	144100000	USD
CY2012Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	28000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y11M
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5400000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5600000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	7200000	USD
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	108400000	USD
CY2011Q4	us-gaap	Equity Method Investments EquityMethodInvestments	504800000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	3300000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	12700000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	4500000	USD
CY2012	us-gaap	Exploration Expense Mining ExplorationExpenseMining	142800000	USD
CY2010	us-gaap	Exploration Expense Mining ExplorationExpenseMining	33700000	USD
CY2011	us-gaap	Exploration Expense Mining ExplorationExpenseMining	80500000	USD
CY2012	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Trading Revenue FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue	174900000	USD
CY2011	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Trading Revenue FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue	403000000	USD
CY2011	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Trading Revenue FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue	-19500000	USD
CY2012	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Trading Revenue FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue	-11300000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	0	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	0	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	0	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	0	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-403000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-174900000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	270400000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	319700000	USD
CY2011Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	49000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	49000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0	USD
CY2011Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	20000000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	20000000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	0	USD
CY2012Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	62400000	USD
CY2011Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	157900000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	45600000	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-11300000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-19500000	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome	0	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome	0	USD
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	0	USD
CY2012	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	19500000	USD
CY2012Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	-11300000	USD
CY2011Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	-19500000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	0	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	47500000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	67500000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	17900000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	6000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	6000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	6000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	17900000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	196500000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	194500000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	147000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	129000000	USD
CY2012Q4	us-gaap	Foreign Currency Contract Asset Fair Value Disclosure ForeignCurrencyContractAssetFairValueDisclosure	16200000	USD
CY2011Q4	us-gaap	Foreign Currency Contract Asset Fair Value Disclosure ForeignCurrencyContractAssetFairValueDisclosure	8000000	USD
CY2012Q4	us-gaap	Foreign Currency Contracts Liability Fair Value Disclosure ForeignCurrencyContractsLiabilityFairValueDisclosure	1900000	USD
CY2011Q4	us-gaap	Foreign Currency Contracts Liability Fair Value Disclosure ForeignCurrencyContractsLiabilityFairValueDisclosure	3500000	USD
CY2012	us-gaap	Foreign Currency Transaction Gain Before Tax ForeignCurrencyTransactionGainBeforeTax	-62300000	USD
CY2010	us-gaap	Foreign Currency Transaction Gain Before Tax ForeignCurrencyTransactionGainBeforeTax	0	USD
CY2011	us-gaap	Foreign Currency Transaction Gain Before Tax ForeignCurrencyTransactionGainBeforeTax	62600000	USD
CY2010	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-39100000	USD
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2200000	USD
CY2011	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	6200000	USD
CY2012	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	-100000	USD
CY2010	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	39800000	USD
CY2011	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	101900000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	167400000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	1152100000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	196500000	USD
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	983400000	USD
CY2012	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	13800000	USD
CY2012Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	-1027800000	USD
CY2011Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	-27800000	USD
CY2012	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	1000000000	USD
CY2011	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	27800000	USD
CY2012	us-gaap	Goodwill Other Changes GoodwillOtherChanges	0	USD
CY2011	us-gaap	Goodwill Other Changes GoodwillOtherChanges	-400000	USD
CY2012	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	1500000	USD
CY2011	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	400000	USD
CY2011	us-gaap	Gross Profit GrossProfit	2610900000	USD
CY2010	us-gaap	Gross Profit GrossProfit	1458700000	USD
CY2012	us-gaap	Gross Profit GrossProfit	1172100000	USD
CY2012Q1	us-gaap	Gross Profit GrossProfit	291800000	USD
CY2012Q2	us-gaap	Gross Profit GrossProfit	443500000	USD
CY2012Q3	us-gaap	Gross Profit GrossProfit	198300000	USD
CY2012Q4	us-gaap	Gross Profit GrossProfit	238500000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-6.57
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	7.32
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	11.34
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.61
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.79
CY2011Q2	us-gaap	Gross Profit GrossProfit	699200000	USD
CY2011Q4	us-gaap	Gross Profit GrossProfit	480100000	USD
CY2011Q3	us-gaap	Gross Profit GrossProfit	843100000	USD
CY2011Q1	us-gaap	Gross Profit GrossProfit	588500000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-935300000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	1599000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	997400000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	87800000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-1649100000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	255700000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	370300000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	168900000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	392800000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	419300000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	618000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1506500000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	602100000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	838600000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	664300000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	684000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-1340400000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2190500000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-501800000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1266400000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-1162500000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1792500000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	997400000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	11.41
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	7.37
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-6.57
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.79
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-11.58
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.60
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.62
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.19
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.09
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.29
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.82
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.59
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-11.58
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.80
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.27
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.08
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.18
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	22500000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	35900000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	20100000	USD
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	5500000	USD
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	30800000	USD
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-2700000	USD
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	2300000	USD
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	4100000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-16800000	USD
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	16500000	USD
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	16300000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.25
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.17
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.14
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.02
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.02
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.04
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.22
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.12
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.03
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.11
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.12
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.14
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.25
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.17
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.22
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.02
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.04
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.02
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.12
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.12
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.12
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.03
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-404800000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	13500000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	9700000	USD
CY2012	us-gaap	Income Tax Effects Allocated Directly To Equity Equity Transactions IncomeTaxEffectsAllocatedDirectlyToEquityEquityTransactions	-12800000	USD
CY2010	us-gaap	Income Tax Effects Allocated Directly To Equity Equity Transactions IncomeTaxEffectsAllocatedDirectlyToEquityEquityTransactions	-4000000	USD
CY2011	us-gaap	Income Tax Effects Allocated Directly To Equity Equity Transactions IncomeTaxEffectsAllocatedDirectlyToEquityEquityTransactions	-4600000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	282500000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	255900000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	407700000	USD
CY2010	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	83300000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	49500000	USD
CY2012	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	634500000	USD
CY2010	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-89000000	USD
CY2012	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	65200000	USD
CY2011	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-44000000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-175600000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	443200000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	766700000	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	202200000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1700000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-7300000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-11400000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	7300000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3100000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	7500000	USD
CY2010	us-gaap	Income Tax Refunds Discontinued Operations IncomeTaxRefundsDiscontinuedOperations	9500000	USD
CY2012	us-gaap	Income Tax Refunds Discontinued Operations IncomeTaxRefundsDiscontinuedOperations	10400000	USD
CY2011	us-gaap	Income Tax Refunds Discontinued Operations IncomeTaxRefundsDiscontinuedOperations	3200000	USD
CY2010	us-gaap	Income Taxes Paid IncomeTaxesPaid	208300000	USD
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	443200000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	275300000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-366100000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	324600000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	89700000	USD
CY2010	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-61200000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	74500000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-39900000	USD
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	837000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	778000	shares
CY2011Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	147000000	USD
CY2012Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	129000000	USD
CY2012	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-195600000	USD
CY2010	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-59400000	USD
CY2011	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-206200000	USD
CY2010	us-gaap	Interest Paid InterestPaid	34200000	USD
CY2012	us-gaap	Interest Paid InterestPaid	207500000	USD
CY2011	us-gaap	Interest Paid InterestPaid	175100000	USD
CY2012Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	283200000	USD
CY2011Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	273300000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	456900000	USD
CY2012Q4	us-gaap	Inventory Net InventoryNet	436500000	USD
CY2012Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	153300000	USD
CY2011Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	183600000	USD
CY2012Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	135800000	USD
CY2011Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	526600000	USD
CY2011Q4	us-gaap	Land Land	37300000	USD
CY2012Q4	us-gaap	Land Land	46400000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	25800000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	26300000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	24200000	USD
CY2011Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	95000000	USD
CY2012Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	96900000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	7502000000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	7814000000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	13574900000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	14541700000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1381500000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1502100000	USD
CY2012Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	13200000	USD
CY2011Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	23000000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	423400000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	193500000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-227200000	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2012Q4	us-gaap	Liabilities Of Assets Held For Sale LiabilitiesOfAssetsHeldForSale	0	USD
CY2011Q4	us-gaap	Liabilities Of Assets Held For Sale LiabilitiesOfAssetsHeldForSale	25900000	USD
CY2012Q4	us-gaap	Loans Receivable Basis Spread On Variable Rate LoansReceivableBasisSpreadOnVariableRate	0.035
CY2012	us-gaap	Loans Receivable Description Of Variable Rate Basis LoansReceivableDescriptionOfVariableRateBasis	prime rate
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	94100000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	74800000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	2900000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	94100000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	282400000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	353000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	117700000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3960700000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3608700000	USD
CY2011Q4	us-gaap	Mineral Properties Accumulated Depletion MineralPropertiesAccumulatedDepletion	516000000	USD
CY2012Q4	us-gaap	Mineral Properties Accumulated Depletion MineralPropertiesAccumulatedDepletion	727000000	USD
CY2011Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	7831400000	USD
CY2012Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	7874400000	USD
CY2012Q4	us-gaap	Mineral Properties Net MineralPropertiesNet	7147400000	USD
CY2011Q4	us-gaap	Mineral Properties Net MineralPropertiesNet	7315400000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	1128200000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	1254700000	USD
CY2012	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	2100000	USD
CY2010	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	500000	USD
CY2011	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	-4500000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	119600000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1087600000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1975100000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5304400000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-961800000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1367700000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2288800000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	514500000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1320000000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	1019900000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	-899400000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	1619100000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	375800000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	85100000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	-1618300000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	258000000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	185400000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	409100000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	601200000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-193000000	USD
CY2010	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	33600000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-106300000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	314100000	USD
CY2010	us-gaap	Operating Expenses OperatingExpenses	225900000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	1480900000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	2296800000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	1232800000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	-308800000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	95500000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	24700000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	7400000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	8000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	13000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	20900000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	21500000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	166300000	USD
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	216200000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	193600000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	191200000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	18200000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-2200000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	151600000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-31000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-500000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	4200000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-1300000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-1500000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	7500000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	151600000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2200000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3800000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	44600000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-156100000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	169300000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1480600000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1188400000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-862400000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-14800000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	121400000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-33800000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-14000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	60200000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-13800000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-18100000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-3300000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-3200000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-77900000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	15700000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	18100000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	25600000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1800000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1900000	USD
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	225100000	USD
CY2011Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	259900000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	492600000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	449800000	USD
CY2012	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	37600000	USD
CY2010	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-9900000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	100000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	12500000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2000000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2700000	USD
CY2010	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-20500000	USD
CY2012	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-5700000	USD
CY2011	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	67900000	USD
CY2011Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	271100000	USD
CY2012Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	214500000	USD
CY2011	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	1900000	USD
CY2012	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	2400000	USD
CY2010	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	0	USD
CY2011	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	-93100000	USD
CY2012	us-gaap	Payments For Proceeds From Derivative Instrument Financing Activities PaymentsForProceedsFromDerivativeInstrumentFinancingActivities	0	USD
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-85000000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-13100000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-36900000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	289800000	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2011	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	54800000	USD
CY2010	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2012	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4300000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-31600000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	118900000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	307200000	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	68900000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	994500000	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2012	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	0	USD
CY2010	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	191300000	USD
CY2011	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	5200000	USD
CY2012	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	0	USD
CY2011	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	125000000	USD
CY2010	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	0	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	266900000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	880700000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1127500000	USD
CY2010	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	8700000	USD
CY2012	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-26100000	USD
CY2011	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	-26300000	USD
CY2012Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	618300000	USD
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	665800000	USD
CY2011Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0
CY2011	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	0	USD
CY2010	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	0	USD
CY2012	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	95400000	USD
CY2011	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2012	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	152600000	USD
CY2010	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	853700000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	854000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	1250000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	998100000	USD
CY2012	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	497000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	1388100000	USD
CY2011	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	750000000	USD
CY2012	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2010	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2012	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1012000000	USD
CY2011	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	250000000	USD
CY2010	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	450000000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-48000000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-36500000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	1812600000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	1019900000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	-1126600000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	11695600000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	13044700000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	11207300000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	10404100000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3979200000	USD
CY2012	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	9000000	USD
CY2010	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0	USD
CY2011	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5900000	USD
CY2012	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2010	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2011	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	337200000	USD
CY2010	us-gaap	Repayments Of Debt RepaymentsOfDebt	200000000	USD
CY2011	us-gaap	Repayments Of Debt RepaymentsOfDebt	0	USD
CY2012	us-gaap	Repayments Of Debt RepaymentsOfDebt	0	USD
CY2010	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2011	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	750000000	USD
CY2012	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2010	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	450000000	USD
CY2012	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	687000000	USD
CY2011	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	250000000	USD
CY2010	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	USD
CY2011	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	278000000	USD
CY2012	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	124800000	USD
CY2012	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	325000000	USD
CY2010	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2011	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3217700000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4424300000	USD
CY2010	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1165500000	USD
CY2012	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1660800000	USD
CY2011	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	2192400000	USD
CY2012	us-gaap	Revenue Recognition Deferred Revenue RevenueRecognitionDeferredRevenue	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-style:italic;font-weight:bold;">Deferred Revenue</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">The terms of one of our U.S. Iron Ore pellet supply agreements require supplemental payments to be paid by the customer during the period 2009 through 2012, with the option to defer a portion of the 2009 monthly amount in exchange for interest payments until the deferred amount is repaid in 2013. Installment amounts received under this arrangement in excess of sales are classified as deferred revenue in the </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">Statements of Consolidated Financial Position</font><font style="font-family:Arial;font-size:11pt;"> upon receipt of payment. Revenue is recognized over the life of the supply agreement, which extends until 2022, in equal annual installments. As of </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">December 31, 2012</font><font style="font-family:Arial;font-size:11pt;"> and </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2011</font><font style="font-family:Arial;font-size:11pt;">, installment amounts received in excess of sales totaled $</font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">128.4 million</font><font style="font-family:Arial;font-size:11pt;"> and $</font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">91.7 million</font><font style="font-family:Arial;font-size:11pt;">, respectively. As of December 31, 2012, deferred revenue of </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">$12.8 million</font><font style="font-family:Arial;font-size:11pt;"> is recorded as current in </font><font style="font-family:Arial;font-size:11pt;color:#000000;font-style:italic;text-decoration:none;">Deferred revenue</font><font style="font-family:Arial;font-size:11pt;"> and </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">$115.6 million</font><font style="font-family:Arial;font-size:11pt;"> is recorded as long-term in </font><font style="font-family:Arial;font-size:11pt;color:#000000;font-style:italic;text-decoration:none;">Other liabilities</font><font style="font-family:Arial;font-size:11pt;"> in the </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">Statements of Consolidated Financial Position</font><font style="font-family:Arial;font-size:11pt;">. As of December 31, 2011, </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">$91.7 million</font><font style="font-family:Arial;font-size:11pt;"> was recorded as current in </font><font style="font-family:Arial;font-size:11pt;color:#000000;font-style:italic;text-decoration:none;">Deferred revenue</font><font style="font-family:Arial;font-size:11pt;"> in the </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">Statements of Consolidated Financial Position</font><font style="font-family:Arial;font-size:11pt;font-style:italic;">.</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">In </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2012</font><font style="font-family:Arial;font-size:11pt;"> and </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2011</font><font style="font-family:Arial;font-size:11pt;">, certain customers purchased and paid for </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">0.2 million</font><font style="font-family:Arial;font-size:11pt;"> tons and </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">0.2 million</font><font style="font-family:Arial;font-size:11pt;"> tons of pellets that were not delivered by year-end, respectively. In </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2012</font><font style="font-family:Arial;font-size:11pt;">, the customer purchases were made in order to secure the 2012 pricing on shipments to occur in early 2013, and in </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2011</font><font style="font-family:Arial;font-size:11pt;">, the customer purchases were made in order to secure the </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2011</font><font style="font-family:Arial;font-size:11pt;"> pricing on shipments that occurred in early </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2012</font><font style="font-family:Arial;font-size:11pt;">. In </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2012</font><font style="font-family:Arial;font-size:11pt;"> and </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2011</font><font style="font-family:Arial;font-size:11pt;">, at the request of the customers the ore was not shipped, therefore the inventory remained at our facilities. We considered whether revenue should be recognized on these sales under the “bill and hold” guidance provided by the SEC Staff; however, based upon the assessment performed, revenue recognition on these transactions totaling $</font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">17.1 million</font><font style="font-family:Arial;font-size:11pt;"> and $</font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">15.8 million</font><font style="font-family:Arial;font-size:11pt;">, respectively, was deferred on the </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">December 31, 2012</font><font style="font-family:Arial;font-size:11pt;"> and </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">2011</font><font style="font-family:Arial;font-size:11pt;"> </font><font style="font-family:Arial;font-size:11pt;color:#000000;text-decoration:none;">Statements of Consolidated Financial Position</font><font style="font-family:Arial;font-size:11pt;">. As of December 31, 2011,</font></div></div>
CY2011	us-gaap	Revenues Revenues	6563900000	USD
CY2012	us-gaap	Revenues Revenues	5872700000	USD
CY2010	us-gaap	Revenues Revenues	4483800000	USD
CY2012Q2	us-gaap	Revenues Revenues	1579500000	USD
CY2012Q3	us-gaap	Revenues Revenues	1544900000	USD
CY2012Q4	us-gaap	Revenues Revenues	1535900000	USD
CY2012Q1	us-gaap	Revenues Revenues	1212400000	USD
CY2011Q1	us-gaap	Revenues Revenues	1147900000	USD
CY2011Q4	us-gaap	Revenues Revenues	1603700000	USD
CY2011Q2	us-gaap	Revenues Revenues	1723200000	USD
CY2011Q3	us-gaap	Revenues Revenues	2089100000	USD
CY2010	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	4218500000	USD
CY2011	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	6321300000	USD
CY2012	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	5520900000	USD
CY2010	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	171700000	USD
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	248300000	USD
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	282500000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	13900000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	16500000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	12500000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	53286	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	76.44
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	655038	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	68.85
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1305212	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1169151	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	43.19
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	61.81
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	737813	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	11.70
CY2011Q2	us-gaap	Share Price SharePrice	85.63
CY2011Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	10350000	shares
CY2012	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	-8000000	USD
CY2010	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	173100000	USD
CY2011	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	1075400000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	853700000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	15700000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	12100000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	13300000	USD
CY2011Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	4000000	shares
CY2011	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	289800000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	289800000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	5785000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	4632700000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5760900000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7039700000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2537000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3838700000	USD
CY2010	us-gaap	Stockholders Equity Other StockholdersEquityOther	0	USD
CY2011Q4	us-gaap	Supplies Supplies	216900000	USD
CY2012Q4	us-gaap	Supplies Supplies	289100000	USD
CY2011	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	17700000	USD
CY2012	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-14800000	USD
CY2010	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	27700000	USD
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142351000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	141012000	shares
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	72.44
CY2012Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	6699567	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	7173751	shares
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	322600000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	336000000	USD
CY2012Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	800000000	USD
CY2011Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	1000000000	USD
CY2012	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-4100000	USD
CY2011	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	69000000	USD
CY2010	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	39000000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	75200000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	102100000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	79800000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	55500000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-3500000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-60400000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	29500000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	11100000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1900000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	42100000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2700000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-45800000	USD
CY2012	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;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-style:italic;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">The preparation of financial statements, in conformity with 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 the reported amounts of revenues and expenses during the reporting period. The more significant areas requiring the use of management estimates and assumptions related to mineral reserves future realizable cash flow; environmental, reclamation and closure obligations; valuation of goodwill, long-lived assets and investments; valuation of inventory, valuation of post-employment, post-retirement and other employee benefit liabilities; valuation of deferred tax assets; reserves for contingencies and litigation; and the fair value of derivative instruments. Actual results could differ from estimates. On an ongoing basis, management reviews estimates. Changes in facts and circumstances may alter such estimates and affect results of operations and financial position in future periods.</font></div></div>
CY2012	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	634500000	USD
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	136138000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	142351000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	140234000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	135301000	shares
CY2012Q4	clf	Accounts Receivable And Derivative Assets Related Parties AccountsReceivableAndDerivativeAssetsRelatedParties	149800000	USD
CY2011Q4	clf	Accounts Receivable And Derivative Assets Related Parties AccountsReceivableAndDerivativeAssetsRelatedParties	180400000	USD
CY2012Q4	clf	Accumulated Other Comprehensive Income Loss Before Taxes AccumulatedOtherComprehensiveIncomeLossBeforeTaxes	-244700000	USD
CY2010Q4	clf	Accumulated Other Comprehensive Income Loss Before Taxes AccumulatedOtherComprehensiveIncomeLossBeforeTaxes	-71300000	USD
CY2011Q4	clf	Accumulated Other Comprehensive Income Loss Before Taxes AccumulatedOtherComprehensiveIncomeLossBeforeTaxes	-299200000	USD
CY2010Q4	clf	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	-117200000	USD
CY2011Q4	clf	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	-206600000	USD
CY2012Q4	clf	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	-189100000	USD
CY2012	clf	Acquired Through Business Combinations AcquiredThroughBusinessCombinations		USD
CY2011	clf	Acquired Through Business Combinations AcquiredThroughBusinessCombinations	14000000	USD
CY2012Q4	clf	Below Market Sales Contracts Accumulated Amortization BelowMarketSalesContractsAccumulatedAmortization	181600000	USD
CY2011Q4	clf	Below Market Sales Contracts Accumulated Amortization BelowMarketSalesContractsAccumulatedAmortization	164800000	USD
CY2012Q4	clf	Below Market Sales Contracts Gross BelowMarketSalesContractsGross	296700000	USD
CY2011Q4	clf	Below Market Sales Contracts Gross BelowMarketSalesContractsGross	329300000	USD
CY2011Q4	clf	Below Market Sales Contracts Net BelowMarketSalesContractsNet	164500000	USD
CY2012Q4	clf	Below Market Sales Contracts Net BelowMarketSalesContractsNet	115100000	USD
CY2011	clf	Capital Expenditures Incurred But Not Yet Paid And Capital Lease Obligations Incurred CapitalExpendituresIncurredButNotYetPaidAndCapitalLeaseObligationsIncurred	98800000	USD
CY2012	clf	Capital Expenditures Incurred But Not Yet Paid And Capital Lease Obligations Incurred CapitalExpendituresIncurredButNotYetPaidAndCapitalLeaseObligationsIncurred	207800000	USD
CY2010	clf	Capital Expenditures Incurred But Not Yet Paid And Capital Lease Obligations Incurred CapitalExpendituresIncurredButNotYetPaidAndCapitalLeaseObligationsIncurred	66200000	USD
CY2012	clf	Impact Of Tax Law Change ImpactOfTaxLawChange	-357100000	USD
CY2012Q4	clf	Impaired Assets Fair Value Disclosure ImpairedAssetsFairValueDisclosure	72500000	USD
CY2012	clf	Impairment Charges ImpairmentCharges	1415300000	USD
CY2010	clf	Income Not Subject To Tax IncomeNotSubjectToTax	0	USD
CY2011Q4	clf	Cash And Cash Equivalents At Carrying Value Including Assets Held For Sale CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale	521600000	USD
CY2009Q4	clf	Cash And Cash Equivalents At Carrying Value Including Assets Held For Sale CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale	502700000	USD
CY2012Q4	clf	Cash And Cash Equivalents At Carrying Value Including Assets Held For Sale CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale	195200000	USD
CY2010Q4	clf	Cash And Cash Equivalents At Carrying Value Including Assets Held For Sale CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale	1566700000	USD
CY2012Q4	clf	Commitments After Year Five CommitmentsAfterYearFive	9700000000	USD
CY2012Q4	clf	Commitments Year Five CommitmentsYearFive	800000000	USD
CY2012Q4	clf	Commitments Year Four CommitmentsYearFour	800000000	USD
CY2012Q4	clf	Commitments Year One CommitmentsYearOne	1600000000	USD
CY2012Q4	clf	Commitments Year Three CommitmentsYearThree	900000000	USD
CY2012Q4	clf	Commitments Year Two CommitmentsYearTwo	700000000	USD
CY2012	clf	Debt Length Of Maturity Years DebtLengthOfMaturityYears	P5Y
CY2012Q4	clf	Deferred Tax Assets Development Costs DeferredTaxAssetsDevelopmentCosts	14100000	USD
CY2011Q4	clf	Deferred Tax Assets Development Costs DeferredTaxAssetsDevelopmentCosts	0	USD
CY2011Q4	clf	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	38800000	USD
CY2012Q4	clf	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	31000000	USD
CY2011Q4	clf	Deferred Tax Assets Mmrt Starting Base Allowance DeferredTaxAssetsMmrtStartingBaseAllowance	0	USD
CY2012Q4	clf	Deferred Tax Assets Mmrt Starting Base Allowance DeferredTaxAssetsMmrtStartingBaseAllowance	357100000	USD
CY2012Q4	clf	Deferred Tax Liabilities Income Tax Uncertainties DeferredTaxLiabilitiesIncomeTaxUncertainties	48500000	USD
CY2011Q4	clf	Deferred Tax Liabilities Income Tax Uncertainties DeferredTaxLiabilitiesIncomeTaxUncertainties	56700000	USD
CY2012Q4	clf	Deferred Tax Liabilities Investment In Ventures DeferredTaxLiabilitiesInvestmentInVentures	207600000	USD
CY2011Q4	clf	Deferred Tax Liabilities Investment In Ventures DeferredTaxLiabilitiesInvestmentInVentures	155900000	USD
CY2012Q4	clf	Deferred Tax Liabilities Other Assets DeferredTaxLiabilitiesOtherAssets	101900000	USD
CY2011Q4	clf	Deferred Tax Liabilities Other Assets DeferredTaxLiabilitiesOtherAssets	98200000	USD
CY2012	clf	Defined Benefit Plan Expected Net Periodic Benefit Cost DefinedBenefitPlanExpectedNetPeriodicBenefitCost	69800000	USD
CY2012	clf	Derivative Policy Minimum Percentage Of Amount Permitted To Be Hedged For Derivatives With Periods Of Up To Fifteen Months DerivativePolicyMinimumPercentageOfAmountPermittedToBeHedgedForDerivativesWithPeriodsOfUpToFifteenMonths	0.1
CY2012	clf	Derivative Policy Minimum Percentage Of Amount Permitted To Be Hedged For Derivatives With Periods Of Up To Twelve Months DerivativePolicyMinimumPercentageOfAmountPermittedToBeHedgedForDerivativesWithPeriodsOfUpToTwelveMonths	0.4
CY2012	clf	Derivative Policy Percentage Of Amount Permitted To Be Hedged DerivativePolicyPercentageOfAmountPermittedToBeHedged	0.75
CY2012Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Current EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityCurrent	12300000	USD
CY2011Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Current EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityCurrent	13700000	USD
CY2011Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Current And Noncurrent EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityCurrentAndNoncurrent	226900000	USD
CY2012Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Current And Noncurrent EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityCurrentAndNoncurrent	265100000	USD
CY2012Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Noncurrent EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityNoncurrent	252800000	USD
CY2011Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Noncurrent EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityNoncurrent	213200000	USD
CY2012Q4	clf	Estimate Of Amount To Be Funded For Bargaining Unit Veba Plans During Term Of Agreements EstimateOfAmountToBeFundedForBargainingUnitVebaPlansDuringTermOfAgreements	65700000	USD
CY2012Q4	clf	Finite Lived Intangible Assets Other Net FiniteLivedIntangibleAssetsOtherNet	53800000	USD
CY2012	clf	Future Below Market Sales Contracts Revenue Within Five Years FutureBelowMarketSalesContractsRevenueWithinFiveYears	115100000	USD
CY2012	clf	Future Below Market Sales Contracts Revenue Year Five FutureBelowMarketSalesContractsRevenueYearFive	0	USD
CY2012	clf	Future Below Market Sales Contracts Revenue Year Four FutureBelowMarketSalesContractsRevenueYearFour	23000000	USD
CY2012	clf	Future Below Market Sales Contracts Revenue Year One FutureBelowMarketSalesContractsRevenueYearOne	46000000	USD
CY2012	clf	Future Below Market Sales Contracts Revenue Year Three FutureBelowMarketSalesContractsRevenueYearThree	23000000	USD
CY2012	clf	Future Below Market Sales Contracts Revenue Year Two FutureBelowMarketSalesContractsRevenueYearTwo	23100000	USD
CY2010	clf	Impact Of Tax Law Change ImpactOfTaxLawChange	16100000	USD
CY2011	clf	Impact Of Tax Law Change ImpactOfTaxLawChange	0	USD
CY2011	clf	Income Not Subject To Tax IncomeNotSubjectToTax	-67500000	USD
CY2012	clf	Income Not Subject To Tax IncomeNotSubjectToTax	-108000000	USD
CY2012	clf	Income Tax Reconciliation Expense Benefit Of Legal Entity Restructuring IncomeTaxReconciliationExpenseBenefitOfLegalEntityRestructuring	0	USD
CY2010	clf	Income Tax Reconciliation Expense Benefit Of Legal Entity Restructuring IncomeTaxReconciliationExpenseBenefitOfLegalEntityRestructuring	-87400000	USD
CY2011	clf	Income Tax Reconciliation Expense Benefit Of Legal Entity Restructuring IncomeTaxReconciliationExpenseBenefitOfLegalEntityRestructuring	0	USD
CY2012	clf	Income Tax Reconciliation Manufacturers Deduction IncomeTaxReconciliationManufacturersDeduction	-4700000	USD
CY2010	clf	Income Tax Reconciliation Manufacturers Deduction IncomeTaxReconciliationManufacturersDeduction	0	USD
CY2011	clf	Income Tax Reconciliation Manufacturers Deduction IncomeTaxReconciliationManufacturersDeduction	-11900000	USD
CY2010	clf	Income Tax Reconciliation Tax Deduction For Percentage Depletion In Excess Of Cost Depletion IncomeTaxReconciliationTaxDeductionForPercentageDepletionInExcessOfCostDepletion	-103100000	USD
CY2011	clf	Income Tax Reconciliation Tax Deduction For Percentage Depletion In Excess Of Cost Depletion IncomeTaxReconciliationTaxDeductionForPercentageDepletionInExcessOfCostDepletion	-153400000	USD
CY2012	clf	Income Tax Reconciliation Tax Deduction For Percentage Depletion In Excess Of Cost Depletion IncomeTaxReconciliationTaxDeductionForPercentageDepletionInExcessOfCostDepletion	-109100000	USD
CY2012	clf	Increase Decrease In Deferred Revenue And Below Market Sales Contracts IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts	-24500000	USD
CY2010	clf	Increase Decrease In Deferred Revenue And Below Market Sales Contracts IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts	39300000	USD
CY2011	clf	Increase Decrease In Deferred Revenue And Below Market Sales Contracts IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts	-146000000	USD
CY2011Q3	clf	Increase Decrease In Dividends Payable Percentage IncreaseDecreaseInDividendsPayablePercentage	1
CY2012Q1	clf	Increase Decrease In Dividends Payable Percentage IncreaseDecreaseInDividendsPayablePercentage	1.23
CY2010	clf	Increase Decrease In Receivables And Other Assets IncreaseDecreaseInReceivablesAndOtherAssets	204600000	USD
CY2011	clf	Increase Decrease In Receivables And Other Assets IncreaseDecreaseInReceivablesAndOtherAssets	-81400000	USD
CY2012	clf	Increase Decrease In Receivables And Other Assets IncreaseDecreaseInReceivablesAndOtherAssets	74800000	USD
CY2012Q4	clf	International Investments Fair Value Disclosure InternationalInvestmentsFairValueDisclosure	27000000	USD
CY2011Q4	clf	International Investments Fair Value Disclosure InternationalInvestmentsFairValueDisclosure	27100000	USD
CY2012Q4	clf	Loans Receivable Interest Rate Stated Percentage LoansReceivableInterestRateStatedPercentage	0.09
CY2012	clf	Management Estimate Of62 Fe ManagementEstimateOf62Fe	0.62
CY2012Q4	clf	Mine Reclamation And Closing Liability Current And Noncurrent MineReclamationAndClosingLiabilityCurrentAndNoncurrent	249400000	USD
CY2011Q4	clf	Mine Reclamation And Closing Liability Current And Noncurrent MineReclamationAndClosingLiabilityCurrentAndNoncurrent	211400000	USD
CY2012	clf	Minimum Participants Cost Percentage To Average Coverage Cost MinimumParticipantsCostPercentageToAverageCoverageCost	0.15
CY2011	clf	Non Taxable Hedging Income NonTaxableHedgingIncome	32400000	USD
CY2010	clf	Non Taxable Hedging Income NonTaxableHedgingIncome	0	USD
CY2012	clf	Non Taxable Hedging Income NonTaxableHedgingIncome	0	USD
CY2011	clf	Non Taxable Loss Income Related To Noncontrolling Interests NonTaxableLossIncomeRelatedToNoncontrollingInterests	63600000	USD
CY2012	clf	Non Taxable Loss Income Related To Noncontrolling Interests NonTaxableLossIncomeRelatedToNoncontrollingInterests	-61000000	USD
CY2010	clf	Non Taxable Loss Income Related To Noncontrolling Interests NonTaxableLossIncomeRelatedToNoncontrollingInterests	0	USD
CY2012Q4	clf	Number Of Employees In Union Covered By Any Union Agreement NumberOfEmployeesInUnionCoveredByAnyUnionAgreement	2400	employee
CY2012	clf	Other Comprehensive Income Loss Foreign Currency Translation Reclassification Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationReclassificationNetOfTax	-14400000	USD
CY2010	clf	Other Comprehensive Income Loss Other Tax OtherComprehensiveIncomeLossOtherTax	0	USD
CY2012	clf	Other Comprehensive Income Loss Other Tax OtherComprehensiveIncomeLossOtherTax	2600000	USD
CY2011	clf	Other Comprehensive Income Loss Other Tax OtherComprehensiveIncomeLossOtherTax	0	USD
CY2010	clf	Other Comprehensive Income Unrealized Gain Loss On Mark To Market Adjustments Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnMarkToMarketAdjustmentsArisingDuringPeriodTax	1700000	USD
CY2012	clf	Other Comprehensive Income Unrealized Gain Loss On Mark To Market Adjustments Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnMarkToMarketAdjustmentsArisingDuringPeriodTax	1700000	USD
CY2011	clf	Other Comprehensive Income Unrealized Gain Loss On Mark To Market Adjustments Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnMarkToMarketAdjustmentsArisingDuringPeriodTax	-17700000	USD
CY2011Q4	clf	Other Current Liabilities Related Parties OtherCurrentLiabilitiesRelatedParties	43000000	USD
CY2012Q4	clf	Other Current Liabilities Related Parties OtherCurrentLiabilitiesRelatedParties	20200000	USD
CY2012	clf	Other Increases Decreases To Unrecognized Tax Benefits OtherIncreasesDecreasesToUnrecognizedTaxBenefits	0	USD
CY2011	clf	Other Increases Decreases To Unrecognized Tax Benefits OtherIncreasesDecreasesToUnrecognizedTaxBenefits	0	USD
CY2010	clf	Other Increases Decreases To Unrecognized Tax Benefits OtherIncreasesDecreasesToUnrecognizedTaxBenefits	2000000	USD
CY2012	clf	Payments To Acquire Consolidated Thompson Net Of Cash Acquired PaymentsToAcquireConsolidatedThompsonNetOfCashAcquired	0	USD
CY2010	clf	Payments To Acquire Consolidated Thompson Net Of Cash Acquired PaymentsToAcquireConsolidatedThompsonNetOfCashAcquired	0	USD
CY2011	clf	Payments To Acquire Consolidated Thompson Net Of Cash Acquired PaymentsToAcquireConsolidatedThompsonNetOfCashAcquired	4423500000	USD
CY2012	clf	Payments To Acquire Property Plant And Equipment Net PaymentsToAcquirePropertyPlantAndEquipmentNet	1127500000	USD
CY2010	clf	Payments To Acquire Property Plant And Equipment Net PaymentsToAcquirePropertyPlantAndEquipmentNet	209600000	USD
CY2011	clf	Payments To Acquire Property Plant And Equipment Net PaymentsToAcquirePropertyPlantAndEquipmentNet	862100000	USD
CY2012	clf	Percentage Of Related Party Revenue PercentageOfRelatedPartyRevenue	0.301
CY2010	clf	Percentage Of Related Party Revenue PercentageOfRelatedPartyRevenue	0.276
CY2011	clf	Percentage Of Related Party Revenue PercentageOfRelatedPartyRevenue	0.347
CY2010	clf	Percentage Of Segment Revenue PercentageOfSegmentRevenue	1
CY2011	clf	Percentage Of Segment Revenue PercentageOfSegmentRevenue	1
CY2012	clf	Percentage Of Segment Revenue PercentageOfSegmentRevenue	1
CY2012	clf	Percentage Of Total Workforce Under Labor Contract PercentageOfTotalWorkforceUnderLaborContract	0.32
CY2011	clf	Quantity Of Goods In Take Or Pay Contracts QuantityOfGoodsInTakeOrPayContracts	200000
CY2012	clf	Quantity Of Goods In Take Or Pay Contracts QuantityOfGoodsInTakeOrPayContracts	200000
CY2010	clf	Quantity Of Goods In Take Or Pay Contracts QuantityOfGoodsInTakeOrPayContracts	100000
CY2011	clf	Reimbursement Revenue And Freight Revenue ReimbursementRevenueAndFreightRevenue	242600000	USD
CY2012	clf	Reimbursement Revenue And Freight Revenue ReimbursementRevenueAndFreightRevenue	351800000	USD
CY2010	clf	Reimbursement Revenue And Freight Revenue ReimbursementRevenueAndFreightRevenue	265300000	USD
CY2012	clf	Security Maturity Period SecurityMaturityPeriod	P10Y
CY2012Q4	clf	Reserve For Investment Commitments ReserveForInvestmentCommitments	10700000	USD
CY2012	clf	Share Based Compensation Arrangement By Share Based Payment Award Number Of Plan Year Agreements ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlanYearAgreements	3	Agreement
CY2012Q4	clf	Share Based Compensation Arrangement By Share Based Payment Award Number Of Plans ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlans	2	Plan
CY2012	clf	Term Of Labor Contract With Union TermOfLaborContractWithUnion	P37M
CY2012Q4	clf	Total Other Assets TotalOtherAssets	717600000	USD
CY2011Q4	clf	Total Other Assets TotalOtherAssets	2226400000	USD
CY2011Q2	clf	Total Shares Authorized TotalSharesAuthorized	231000000	shares
CY2012	clf	Undistributed Earnings Losses Related To Noncontrolling Interests UndistributedEarningsLossesRelatedToNoncontrollingInterests	400000	USD
CY2010	clf	Undistributed Earnings Losses Related To Noncontrolling Interests UndistributedEarningsLossesRelatedToNoncontrollingInterests	-4700000	USD
CY2011	clf	Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromCurrencyTranslation	0	USD
CY2010	clf	Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromCurrencyTranslation	700000	USD
CY2012	clf	Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromCurrencyTranslation	0	USD
CY2012Q4	clf	Valuation Allowance Reversed Related To Capital Loss Carryfowards And Utilized ValuationAllowanceReversedRelatedToCapitalLossCarryfowardsAndUtilized	1200000	USD
CY2012Q4	clf	Value Of Veba Trust Assets As Percentage Of Funding Obligation ValueOfVebaTrustAssetsAsPercentageOfFundingObligation	0.9
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Document Type DocumentType	10-K
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0000764065
CY2013Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	142506400	shares
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012Q2	dei	Entity Public Float EntityPublicFloat	7314008684	USD
CY2012	dei	Entity Registrant Name EntityRegistrantName	CLIFFS NATURAL RESOURCES INC.
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2012	dei	Trading Symbol TradingSymbol	clf

Files In Submission

Name	View Source	Status
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0000764065-13-000003-index.html	Edgar Link	pending
0000764065-13-000003.txt	Edgar Link	pending
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report.css	Edgar Link	pending
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usiofilingsmap.jpg	Edgar Link	pending

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$CLF
CLEVELAND-CLIFFS INC. Stock $clf

2012 Form 10-K Financial Statement

#000076406513000003 Filed on February 12, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CLF CLEVELAND-CLIFFS INC. Stock $clf

2012 Form 10-K Financial Statement

#000076406513000003 Filed on February 12, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CLF
CLEVELAND-CLIFFS INC. Stock $clf