$CLF
CLEVELAND-CLIFFS INC. Stock $clf

$clf Overview Financials Valuation SEC Filings Company Website

2015 Q4 Form 10-K Financial Statement

#000076406516000183 Filed on February 24, 2016

Income Statement

Concept	2015 Q4	2015	2014 Q4
Revenue	$476.0M	$2.013B	$1.030B
YoY Change	-53.8%	-40.31%	-32.03%
Cost Of Revenue	$432.7M	$1.777B	$774.3M
YoY Change	-44.12%	-28.57%	-184.68%
Gross Profit	$43.30M	$236.5M	$256.0M
YoY Change	-83.09%	-73.3%	-13.07%
Gross Profit Margin	9.1%	11.75%	24.85%
Selling, General & Admin	$27.80M	$110.0M	$23.60M
YoY Change	17.8%	-28.89%	-675.61%
% of Gross Profit	64.2%	46.51%	9.22%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$34.90M	$134.0M	$73.60M
YoY Change	-52.58%	-73.41%	-52.61%
% of Gross Profit	80.6%	56.66%	28.75%
Operating Expenses	$18.80M	$85.20M	$4.700M
YoY Change	300.0%	-88.72%	-104.88%
Operating Profit	$24.50M	$151.3M	$251.3M
YoY Change	-90.25%	16.3%	-35.71%
Interest Expense	-$60.30M	-$228.5M	-$48.40M
YoY Change	24.59%	29.32%	-6.74%
% of Operating Profit	-246.12%	-151.02%	-19.26%
Other Income/Expense, Net	$400.0K	$161.8M	$600.0K
YoY Change	-33.33%	-208.01%	-700.0%
Pretax Income	-$35.40M	$314.2M	-$37.20M
YoY Change	-4.84%	-170.21%	-105.52%
Income Tax	-$600.0K	$169.3M	-$207.3M
% Of Pretax Income		53.88%
Net Earnings	-$60.30M	-$749.3M	-$1.285B
YoY Change	-95.31%	-89.63%	-3068.13%
Net Earnings / Revenue	-12.67%	-37.22%	-124.74%
Basic Earnings Per Share	-$0.39	-$5.14	-$8.48
Diluted Earnings Per Share	-$0.39	-$5.13	-$7.19
COMMON SHARES
Basic Shares Outstanding	153.4M shares	153.2M shares	153.2M shares
Diluted Shares Outstanding		153.6M shares

Balance Sheet

Concept	2015 Q4	2015	2014 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$285.0M	$285.0M	$271.0M
YoY Change	5.17%	5.17%	-19.35%
Cash & Equivalents	$285.2M	$285.0M	$271.3M
Short-Term Investments
Other Short-Term Assets	$50.90M	$45.00M	$107.7M
YoY Change	-52.74%	-89.66%	-60.55%
Inventory	$329.6M	$440.0M	$260.1M
Prepaid Expenses
Receivables	$40.20M	$40.00M	$122.7M
Other Receivables	$172.0M	$172.0M	$218.0M
Total Short-Term Assets	$982.7M	$983.0M	$1.425B
YoY Change	-31.05%	-31.02%	-8.63%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.059B	$1.059B	$1.071B
YoY Change	-1.07%	-1.12%	-42.78%
Goodwill	$2.000M		$2.000M
YoY Change	0.0%		-97.32%
Intangibles
YoY Change
Long-Term Investments	-$2.400M		$4.100M
YoY Change	-158.54%		-86.69%
Other Assets	$93.80M	-$38.00M	$92.90M
YoY Change	0.97%	-107.38%	-74.69%
Total Long-Term Assets	$1.153B	$1.153B	$1.722B
YoY Change	-33.05%	-33.04%	-85.08%
TOTAL ASSETS
Total Short-Term Assets	$982.7M	$983.0M	$1.425B
Total Long-Term Assets	$1.153B	$1.153B	$1.722B
Total Assets	$2.136B	$2.136B	$3.147B
YoY Change	-32.15%	-32.13%	-75.98%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$106.3M	$106.0M	$166.1M
YoY Change	-36.0%	-36.14%	-51.92%
Accrued Expenses	$32.40M	$156.0M	$99.40M
YoY Change	-67.4%	-22.77%	-51.84%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due			$0.00
YoY Change			-100.0%
Total Short-Term Liabilities	$581.7M	$582.0M	$954.5M
YoY Change	-39.06%	-39.06%	-12.07%
LONG-TERM LIABILITIES
Long-Term Debt	$2.699B	$2.699B	$2.827B
YoY Change	-4.5%	-4.53%	-6.49%
Other Long-Term Liabilities	$213.8M	$666.0M	$239.1M
YoY Change	-10.58%	-39.51%	-36.96%
Total Long-Term Liabilities	$2.913B	$3.365B	$3.066B
YoY Change	-4.97%	-14.33%	-9.89%
TOTAL LIABILITIES
Total Short-Term Liabilities	$581.7M	$582.0M	$954.5M
Total Long-Term Liabilities	$2.913B	$3.365B	$3.066B
Total Liabilities	$3.947B	$4.117B	$4.882B
YoY Change	-19.14%	-10.09%	-21.74%
SHAREHOLDERS EQUITY
Retained Earnings	-$4.748B		-$3.961B
YoY Change	19.89%		-216.24%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$265.0M		$285.7M
YoY Change	-7.25%		-6.48%
Treasury Stock Shares	5.954M shares		6.299M shares
Shareholders Equity	-$1.981B	-$1.981B	-$1.431B
YoY Change
Total Liabilities & Shareholders Equity	$2.136B	$2.136B	$3.147B
YoY Change	-32.15%	-32.13%	-76.02%

Cashflow Statement

Concept	2015 Q4	2015	2014 Q4
OPERATING ACTIVITIES
Net Income	-$60.30M	-$749.3M	-$1.285B
YoY Change	-95.31%	-89.63%	-3068.13%
Depreciation, Depletion And Amortization	$34.90M	$134.0M	$73.60M
YoY Change	-52.58%	-73.41%	-52.61%
Cash From Operating Activities	$97.40M	$37.90M	$254.9M
YoY Change	-61.79%	-89.44%	-44.59%
INVESTING ACTIVITIES
Capital Expenditures	-$22.90M	$80.80M	-$50.90M
YoY Change	-55.01%	-71.56%	-57.37%
Acquisitions
YoY Change
Other Investing Activities	-$23.10M	$22.40M	$155.2M
YoY Change	-114.88%	-187.84%	265.18%
Cash From Investing Activities	-$46.00M	-$103.2M	$104.3M
YoY Change	-144.1%	-0.39%	-235.63%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-37.20M	$61.00M	-305.7M
YoY Change	-87.83%	-121.16%	-8.45%
NET CHANGE
Cash From Operating Activities	97.40M	$37.90M	254.9M
Cash From Investing Activities	-46.00M	-$103.2M	104.3M
Cash From Financing Activities	-37.20M	$61.00M	-305.7M
Net Change In Cash	14.20M	-$4.300M	53.50M
YoY Change	-73.46%	-86.97%	8.74%
FREE CASH FLOW
Cash From Operating Activities	$97.40M	$37.90M	$254.9M
Capital Expenditures	-$22.90M	$80.80M	-$50.90M
Free Cash Flow	$120.3M	-$42.90M	$305.8M
YoY Change	-60.66%	-157.35%	-47.22%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2014Q4	clf	Accumulated Depreciationand Depletion Property Plantand Equipment AccumulatedDepreciationandDepletionPropertyPlantandEquipment	799700000	USD
CY2015Q4	clf	Accumulated Depreciationand Depletion Property Plantand Equipment AccumulatedDepreciationandDepletionPropertyPlantandEquipment	911300000	USD
CY2013Q4	clf	Accumulated Other Comprehensive Income Loss Before Taxes AccumulatedOtherComprehensiveIncomeLossBeforeTaxes	-213300000	USD
CY2014Q4	clf	Accumulated Other Comprehensive Income Loss Before Taxes AccumulatedOtherComprehensiveIncomeLossBeforeTaxes	-388100000	USD
CY2015Q4	clf	Accumulated Other Comprehensive Income Loss Before Taxes AccumulatedOtherComprehensiveIncomeLossBeforeTaxes	-141800000	USD
CY2013Q4	clf	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	-100400000	USD
CY2014Q4	clf	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	-142300000	USD
CY2015Q4	clf	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	-123800000	USD
CY2013	clf	Adjusted Ebitda AdjustedEBITDA	1565400000	USD
CY2014	clf	Adjusted Ebitda AdjustedEBITDA	1048300000	USD
CY2015	clf	Adjusted Ebitda AdjustedEBITDA	292900000	USD
CY2014Q4	clf	Antidilutive Incremental Common Shares Excludedand Attributableto Sharebased Payment Arrangements AntidilutiveIncrementalCommonSharesExcludedandAttributabletoSharebasedPaymentArrangements	500000	shares
CY2014	clf	Antidilutive Incremental Common Shares Excludedand Attributableto Sharebased Payment Arrangements AntidilutiveIncrementalCommonSharesExcludedandAttributabletoSharebasedPaymentArrangements	700000	shares
CY2013	clf	Asset Impairment Charges Cash Flows AssetImpairmentChargesCashFlows	250800000	USD
CY2014	clf	Asset Impairment Charges Cash Flows AssetImpairmentChargesCashFlows	9029900000	USD
CY2015	clf	Asset Impairment Charges Cash Flows AssetImpairmentChargesCashFlows	76600000	USD
CY2015	clf	Below Market Sales Contracts Life BelowMarketSalesContractsLife	P1Y
CY2013	clf	Capital Expenditures Incurred But Not Yet Paid And Capital Lease Obligations Incurred CapitalExpendituresIncurredButNotYetPaidAndCapitalLeaseObligationsIncurred	-109300000	USD
CY2014	clf	Capital Expenditures Incurred But Not Yet Paid And Capital Lease Obligations Incurred CapitalExpendituresIncurredButNotYetPaidAndCapitalLeaseObligationsIncurred	-48600000	USD
CY2015	clf	Capital Expenditures Incurred But Not Yet Paid And Capital Lease Obligations Incurred CapitalExpendituresIncurredButNotYetPaidAndCapitalLeaseObligationsIncurred	15900000	USD
CY2012Q4	clf	Cash And Cash Equivalents At Carrying Value Including Assets Held For Sale CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale	195200000	USD
CY2013Q4	clf	Cash And Cash Equivalents At Carrying Value Including Assets Held For Sale CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale	335500000	USD
CY2014Q4	clf	Cash And Cash Equivalents At Carrying Value Including Assets Held For Sale CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale	290900000	USD
CY2015Q4	clf	Cash And Cash Equivalents At Carrying Value Including Assets Held For Sale CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale	285200000	USD
CY2014Q4	clf	Cumulative Mandatory Convertible CumulativeMandatoryConvertible	0.07
CY2015Q4	clf	Cumulative Mandatory Convertible CumulativeMandatoryConvertible	0.07
CY2014Q4	clf	Debt Instrument Par Value DebtInstrumentParValue	3980000000	USD
CY2015Q4	clf	Debt Instrument Par Value DebtInstrumentParValue	3448200000	USD
CY2014Q4	clf	Deferred Tax Assets Development Costs DeferredTaxAssetsDevelopmentCosts	0	USD
CY2015Q4	clf	Deferred Tax Assets Development Costs DeferredTaxAssetsDevelopmentCosts	4900000	USD
CY2014Q4	clf	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	14100000	USD
CY2015Q4	clf	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	18300000	USD
CY2014Q4	clf	Deferred Tax Liabilities Investment In Ventures DeferredTaxLiabilitiesInvestmentInVentures	-198000000	USD
CY2015Q4	clf	Deferred Tax Liabilities Investment In Ventures DeferredTaxLiabilitiesInvestmentInVentures	-206600000	USD
CY2014Q4	clf	Deferred Tax Liabilities Other Assets DeferredTaxLiabilitiesOtherAssets	-65900000	USD
CY2015Q4	clf	Deferred Tax Liabilities Other Assets DeferredTaxLiabilitiesOtherAssets	-19100000	USD
CY2015	clf	Defined Benefit Plan Expected Net Periodic Benefit Cost DefinedBenefitPlanExpectedNetPeriodicBenefitCost	11900000	USD
CY2015	clf	Depositary Share Interest In Share Of7 Series Mandatory Convertible Preferred Stock Class A DepositaryShareInterestInShareOf7SeriesMandatoryConvertiblePreferredStockClassA	0.025
CY2013	clf	Depreciation Depletionand Amortizationexcluding Depreciation Amortizationand Depletionexpensefor Discontinued Operations DepreciationDepletionandAmortizationexcludingDepreciationAmortizationandDepletionexpenseforDiscontinuedOperations	284800000	USD
CY2014	clf	Depreciation Depletionand Amortizationexcluding Depreciation Amortizationand Depletionexpensefor Discontinued Operations DepreciationDepletionandAmortizationexcludingDepreciationAmortizationandDepletionexpenseforDiscontinuedOperations	261000000	USD
CY2015	clf	Depreciation Depletionand Amortizationexcluding Depreciation Amortizationand Depletionexpensefor Discontinued Operations DepreciationDepletionandAmortizationexcludingDepreciationAmortizationandDepletionexpenseforDiscontinuedOperations	130800000	USD
CY2015	clf	Derivative Policy Minimum Percentage Of Amount Permitted To Be Hedged For Derivatives With Periods Of Up To Fifteen Months DerivativePolicyMinimumPercentageOfAmountPermittedToBeHedgedForDerivativesWithPeriodsOfUpToFifteenMonths	0.1
CY2015	clf	Derivative Policy Minimum Percentage Of Amount Permitted To Be Hedged For Derivatives With Periods Of Up To Twelve Months DerivativePolicyMinimumPercentageOfAmountPermittedToBeHedgedForDerivativesWithPeriodsOfUpToTwelveMonths	0.4
CY2015	clf	Derivative Policy Percentage Of Amount Permitted To Be Hedged DerivativePolicyPercentageOfAmountPermittedToBeHedged	0.75
CY2013	clf	Ebitda EBITDA	1189300000	USD
CY2014	clf	Ebitda EBITDA	-8924400000	USD
CY2015	clf	Ebitda EBITDA	-219700000	USD
CY2013	clf	Effective Income Tax Reconciliation Valuation Allowance Prior Year EffectiveIncomeTaxReconciliationValuationAllowancePriorYear	0	USD
CY2014	clf	Effective Income Tax Reconciliation Valuation Allowance Prior Year EffectiveIncomeTaxReconciliationValuationAllowancePriorYear	15200000	USD
CY2015	clf	Effective Income Tax Reconciliation Valuation Allowance Prior Year EffectiveIncomeTaxReconciliationValuationAllowancePriorYear	165800000	USD
CY2013	clf	Effective Income Tax Reconciliation Valuation Allowance Prior Year Percent EffectiveIncomeTaxReconciliationValuationAllowancePriorYearPercent	0.000
CY2014	clf	Effective Income Tax Reconciliation Valuation Allowance Prior Year Percent EffectiveIncomeTaxReconciliationValuationAllowancePriorYearPercent	-0.772
CY2015	clf	Effective Income Tax Reconciliation Valuation Allowance Prior Year Percent EffectiveIncomeTaxReconciliationValuationAllowancePriorYearPercent	0.529
CY2015Q1	clf	Eliminationof Dividend EliminationofDividend	0.15
CY2014Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Current EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityCurrent	5200000	USD
CY2015Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Current EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityCurrent	2800000	USD
CY2014Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Current And Noncurrent EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityCurrentAndNoncurrent	170800000	USD
CY2015Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Current And Noncurrent EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityCurrentAndNoncurrent	234000000	USD
CY2014Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Noncurrent EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityNoncurrent	165600000	USD
CY2015Q4	clf	Environmental Loss Contingency And Mine Reclamation And Closing Liability Noncurrent EnvironmentalLossContingencyAndMineReclamationAndClosingLiabilityNoncurrent	231200000	USD
CY2015	clf	Future Below Market Sales Contracts Revenue Year One FutureBelowMarketSalesContractsRevenueYearOne	23100000	USD
CY2015Q4	clf	Gain Contingencyon North American Coal Sale GainContingencyonNorthAmericanCoalSale	50000000	USD
CY2013	clf	Gainonextinguishmentofdebtcashflows Gainonextinguishmentofdebtcashflows	0	USD
CY2014	clf	Gainonextinguishmentofdebtcashflows Gainonextinguishmentofdebtcashflows	-16200000	USD
CY2015	clf	Gainonextinguishmentofdebtcashflows Gainonextinguishmentofdebtcashflows	-392900000	USD
CY2013	clf	Impact Of Tax Law Change ImpactOfTaxLawChange	0	USD
CY2014	clf	Impact Of Tax Law Change ImpactOfTaxLawChange	13000000	USD
CY2015	clf	Impact Of Tax Law Change ImpactOfTaxLawChange	0	USD
CY2013	clf	Impact Of Tax Law Change Percent ImpactOfTaxLawChangePercent	0
CY2014	clf	Impact Of Tax Law Change Percent ImpactOfTaxLawChangePercent	-0.66
CY2015	clf	Impact Of Tax Law Change Percent ImpactOfTaxLawChangePercent	0
CY2014	clf	Impairment Charges ImpairmentCharges	644700000	USD
CY2015Q1	clf	Impairment Charges ImpairmentCharges	269500000	USD
CY2013	clf	Income Loss Equity Method Investment Cash Flows IncomeLossEquityMethodInvestmentCashFlows	-74400000	USD
CY2014	clf	Income Loss Equity Method Investment Cash Flows IncomeLossEquityMethodInvestmentCashFlows	-9900000	USD
CY2015	clf	Income Loss Equity Method Investment Cash Flows IncomeLossEquityMethodInvestmentCashFlows	100000	USD
CY2013	clf	Income Lossfrom Discontinued Operationsnetoftaxincludingportionattributableto Noncontrollinginterest Canadian Entitiesand North American Coal IncomeLossfromDiscontinuedOperationsnetoftaxincludingportionattributabletoNoncontrollinginterestCanadianEntitiesandNorthAmericanCoal	-519100000	USD
CY2013	clf	Income Not Subject To Tax IncomeNotSubjectToTax	-84700000	USD
CY2014	clf	Income Not Subject To Tax IncomeNotSubjectToTax	-27700000	USD
CY2015	clf	Income Not Subject To Tax IncomeNotSubjectToTax	0	USD
CY2013	clf	Income Tax Expense Benefit Percent IncomeTaxExpenseBenefitPercent	0.2
CY2014	clf	Income Tax Expense Benefit Percent IncomeTaxExpenseBenefitPercent	4.365
CY2015	clf	Income Tax Expense Benefit Percent IncomeTaxExpenseBenefitPercent	0.541
CY2013	clf	Income Tax Expense Benefitincluding Discontinued Operations IncomeTaxExpenseBenefitincludingDiscontinuedOperations	-55100000	USD
CY2014	clf	Income Tax Expense Benefitincluding Discontinued Operations IncomeTaxExpenseBenefitincludingDiscontinuedOperations	1302000000	USD
CY2015	clf	Income Tax Expense Benefitincluding Discontinued Operations IncomeTaxExpenseBenefitincludingDiscontinuedOperations	-163300000	USD
CY2013	clf	Income Tax Reconciliation Tax Deduction For Percentage Depletion In Excess Of Cost Depletion IncomeTaxReconciliationTaxDeductionForPercentageDepletionInExcessOfCostDepletion	-97600000	USD
CY2014	clf	Income Tax Reconciliation Tax Deduction For Percentage Depletion In Excess Of Cost Depletion IncomeTaxReconciliationTaxDeductionForPercentageDepletionInExcessOfCostDepletion	-87900000	USD
CY2015	clf	Income Tax Reconciliation Tax Deduction For Percentage Depletion In Excess Of Cost Depletion IncomeTaxReconciliationTaxDeductionForPercentageDepletionInExcessOfCostDepletion	-34900000	USD
CY2013	clf	Income Tax Reconciliation Tax Deductionforpercentagedepletioninexcessofcostdepletionpercent IncomeTaxReconciliationTaxDeductionforpercentagedepletioninexcessofcostdepletionpercent	-0.082
CY2014	clf	Income Tax Reconciliation Tax Deductionforpercentagedepletioninexcessofcostdepletionpercent IncomeTaxReconciliationTaxDeductionforpercentagedepletioninexcessofcostdepletionpercent	4.462
CY2015	clf	Income Tax Reconciliation Tax Deductionforpercentagedepletioninexcessofcostdepletionpercent IncomeTaxReconciliationTaxDeductionforpercentagedepletioninexcessofcostdepletionpercent	-0.111
CY2013	clf	Income Taxes Paid Discontinued Operations IncomeTaxesPaidDiscontinuedOperations	3700000	USD
CY2013	clf	Incomenotsubjecttotaxpercent Incomenotsubjecttotaxpercent	-0.071
CY2014	clf	Incomenotsubjecttotaxpercent Incomenotsubjecttotaxpercent	1.406
CY2015	clf	Incomenotsubjecttotaxpercent Incomenotsubjecttotaxpercent	0
CY2013	clf	Increase Decrease In Deferred Revenue And Below Market Sales Contracts IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts	-52800000	USD
CY2014	clf	Increase Decrease In Deferred Revenue And Below Market Sales Contracts IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts	-18000000	USD
CY2015	clf	Increase Decrease In Deferred Revenue And Below Market Sales Contracts IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts	-42600000	USD
CY2013	clf	Interest Income Expensenetincluding Discontinued Operations InterestIncomeExpensenetincludingDiscontinuedOperations	-179100000	USD
CY2014	clf	Interest Income Expensenetincluding Discontinued Operations InterestIncomeExpensenetincludingDiscontinuedOperations	-185200000	USD
CY2015	clf	Interest Income Expensenetincluding Discontinued Operations InterestIncomeExpensenetincludingDiscontinuedOperations	-231400000	USD
CY2013	clf	Investmentsin Di Pandprepetitionfinancing InvestmentsinDIPandprepetitionfinancing	0	USD
CY2014	clf	Investmentsin Di Pandprepetitionfinancing InvestmentsinDIPandprepetitionfinancing	0	USD
CY2015	clf	Investmentsin Di Pandprepetitionfinancing InvestmentsinDIPandprepetitionfinancing	-14000000	USD
CY2014Q4	clf	Loanstoandaccountsreceivablesfromthe Canadian Entities LoanstoandaccountsreceivablesfromtheCanadianEntities	400000	USD
CY2015Q4	clf	Loanstoandaccountsreceivablesfromthe Canadian Entities LoanstoandaccountsreceivablesfromtheCanadianEntities	72900000	USD
CY2015Q4	clf	Long Term Debt Maturities Total LongTermDebtMaturitiesTotal	2898200000	USD
CY2013	clf	Lossgainonsaleof North American Coalmines LossgainonsaleofNorthAmericanCoalmines	0	USD
CY2014	clf	Lossgainonsaleof North American Coalmines LossgainonsaleofNorthAmericanCoalmines	419600000	USD
CY2015	clf	Lossgainonsaleof North American Coalmines LossgainonsaleofNorthAmericanCoalmines	-9300000	USD
CY2013	clf	Losson Deconsolidationnetofcashdeconsolidated LossonDeconsolidationnetofcashdeconsolidated	0	USD
CY2014	clf	Losson Deconsolidationnetofcashdeconsolidated LossonDeconsolidationnetofcashdeconsolidated	0	USD
CY2015	clf	Losson Deconsolidationnetofcashdeconsolidated LossonDeconsolidationnetofcashdeconsolidated	-668300000	USD
CY2014Q4	clf	Lossonsaleof Cliffs Logan County Coal LossonsaleofCliffsLoganCountyCoal	419600000	USD
CY2014	clf	Lossonsaleof Cliffs Logan County Coal LossonsaleofCliffsLoganCountyCoal	155000000	USD
CY2015	clf	Management Estimate Of62 Fe ManagementEstimateOf62Fe	0.62
CY2014Q4	clf	Mine Reclamation And Closing Liability Current And Noncurrent MineReclamationAndClosingLiabilityCurrentAndNoncurrent	165300000	USD
CY2015Q4	clf	Mine Reclamation And Closing Liability Current And Noncurrent MineReclamationAndClosingLiabilityCurrentAndNoncurrent	230400000	USD
CY2015	clf	Minimum Participants Cost Percentage To Average Coverage Cost MinimumParticipantsCostPercentageToAverageCoverageCost	0.15
CY2013	clf	Non Taxable Loss Income Related To Noncontrolling Interests NonTaxableLossIncomeRelatedToNoncontrollingInterests	5400000	USD
CY2014	clf	Non Taxable Loss Income Related To Noncontrolling Interests NonTaxableLossIncomeRelatedToNoncontrollingInterests	9400000	USD
CY2015	clf	Non Taxable Loss Income Related To Noncontrolling Interests NonTaxableLossIncomeRelatedToNoncontrollingInterests	3000000	USD
CY2013	clf	Nontaxablelossincomerelatedtononcontrollinginterestspercent Nontaxablelossincomerelatedtononcontrollinginterestspercent	-0.005
CY2014	clf	Nontaxablelossincomerelatedtononcontrollinginterestspercent Nontaxablelossincomerelatedtononcontrollinginterestspercent	0.477
CY2015	clf	Nontaxablelossincomerelatedtononcontrollinginterestspercent Nontaxablelossincomerelatedtononcontrollinginterestspercent	-0.01
CY2013	clf	Other Comprehensive Income Loss Other Tax OtherComprehensiveIncomeLossOtherTax	-9800000	USD
CY2014	clf	Other Comprehensive Income Loss Other Tax OtherComprehensiveIncomeLossOtherTax	200000	USD
CY2015	clf	Other Comprehensive Income Loss Other Tax OtherComprehensiveIncomeLossOtherTax	5900000	USD
CY2013	clf	Other Comprehensive Income Unrealized Gain Loss On Mark To Market Adjustments Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnMarkToMarketAdjustmentsArisingDuringPeriodTax	1800000	USD
CY2014	clf	Other Comprehensive Income Unrealized Gain Loss On Mark To Market Adjustments Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnMarkToMarketAdjustmentsArisingDuringPeriodTax	3600000	USD
CY2015	clf	Other Comprehensive Income Unrealized Gain Loss On Mark To Market Adjustments Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnMarkToMarketAdjustmentsArisingDuringPeriodTax	300000	USD
CY2013	clf	Other Increases Decreases To Unrecognized Tax Benefits OtherIncreasesDecreasesToUnrecognizedTaxBenefits	0	USD
CY2014	clf	Other Increases Decreases To Unrecognized Tax Benefits OtherIncreasesDecreasesToUnrecognizedTaxBenefits	-1200000	USD
CY2015	clf	Other Increases Decreases To Unrecognized Tax Benefits OtherIncreasesDecreasesToUnrecognizedTaxBenefits	0	USD
CY2013	clf	Payments To Acquire Property Plant And Equipment Net PaymentsToAcquirePropertyPlantAndEquipmentNet	861600000	USD
CY2014	clf	Payments To Acquire Property Plant And Equipment Net PaymentsToAcquirePropertyPlantAndEquipmentNet	284100000	USD
CY2015	clf	Payments To Acquire Property Plant And Equipment Net PaymentsToAcquirePropertyPlantAndEquipmentNet	80800000	USD
CY2013	clf	Percentage Of Related Party Revenue PercentageOfRelatedPartyRevenue	0.286
CY2014	clf	Percentage Of Related Party Revenue PercentageOfRelatedPartyRevenue	0.327
CY2015	clf	Percentage Of Related Party Revenue PercentageOfRelatedPartyRevenue	0.366
CY2013	clf	Percentage Of Segment Revenue PercentageOfSegmentRevenue	1
CY2014	clf	Percentage Of Segment Revenue PercentageOfSegmentRevenue	1
CY2015	clf	Percentage Of Segment Revenue PercentageOfSegmentRevenue	1
CY2015	clf	Potential Earn Outfrom North American Coalsale PotentialEarnOutfromNorthAmericanCoalsale	50000000	USD
CY2014Q4	clf	Preferred Shares Issued And Outstanding Value PreferredSharesIssuedAndOutstandingValue	731300000	USD
CY2015Q4	clf	Preferred Shares Issued And Outstanding Value PreferredSharesIssuedAndOutstandingValue	731300000	USD
CY2014	clf	Preferred Stock Dividends PreferredStockDividends	51300000	USD
CY2015	clf	Preferred Stock Dividends PreferredStockDividends	38400000	USD
CY2013	clf	Proceedsfromequipmentloans Proceedsfromequipmentloans	164800000	USD
CY2014	clf	Proceedsfromequipmentloans Proceedsfromequipmentloans	0	USD
CY2015	clf	Proceedsfromequipmentloans Proceedsfromequipmentloans	0	USD
CY2014Q4	clf	Proceedsfromsaleof Cliffs Logan County Coal ProceedsfromsaleofCliffsLoganCountyCoal	155000000	USD
CY2013	clf	Proceedsfromsaleof North American Coalmines ProceedsfromsaleofNorthAmericanCoalmines	0	USD
CY2014	clf	Proceedsfromsaleof North American Coalmines ProceedsfromsaleofNorthAmericanCoalmines	155000000	USD
CY2015	clf	Proceedsfromsaleof North American Coalmines ProceedsfromsaleofNorthAmericanCoalmines	-15200000	USD
CY2013	clf	Property Plantand Equipment Additions Including Discontinued Operations PropertyPlantandEquipmentAdditionsIncludingDiscontinuedOperations	752300000	USD
CY2014	clf	Property Plantand Equipment Additions Including Discontinued Operations PropertyPlantandEquipmentAdditionsIncludingDiscontinuedOperations	235500000	USD
CY2015	clf	Property Plantand Equipment Additions Including Discontinued Operations PropertyPlantandEquipmentAdditionsIncludingDiscontinuedOperations	96700000	USD
CY2013	clf	Repaymentsofequipmentloans Repaymentsofequipmentloans	3000000	USD
CY2014	clf	Repaymentsofequipmentloans Repaymentsofequipmentloans	20900000	USD
CY2015	clf	Repaymentsofequipmentloans Repaymentsofequipmentloans	45400000	USD
CY2015Q4	clf	Reserve For Investment Commitments ReserveForInvestmentCommitments	48100000	USD
CY2014Q4	clf	Sale Priceof Clcc Assets SalePriceofCLCCAssets	174000000	USD
CY2014	clf	Sale Priceof Clcc Assets SalePriceofCLCCAssets	174000000	USD
CY2015	clf	Share Based Compensation Arrangement By Share Based Payment Award Number Of Plan Year Agreements ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlanYearAgreements	3	Agreement
CY2015Q4	clf	Share Based Compensation Arrangement By Share Based Payment Award Number Of Plans ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlans	2	Plan
CY2013	clf	Tax Adjustments Settlements And Unusual Provisions Percent TaxAdjustmentsSettlementsAndUnusualProvisionsPercent	0.011
CY2014	clf	Tax Adjustments Settlements And Unusual Provisions Percent TaxAdjustmentsSettlementsAndUnusualProvisionsPercent	0
CY2015	clf	Tax Adjustments Settlements And Unusual Provisions Percent TaxAdjustmentsSettlementsAndUnusualProvisionsPercent	0.269
CY2015Q4	clf	Total Amortization Expense Finite Lived Intangible Assets TotalAmortizationExpenseFiniteLivedIntangibleAssets	18200000	USD
CY2013	clf	Total Amount Reclassified From Accumulated Other Comprehensive Income Loss During Period TotalAmountReclassifiedFromAccumulatedOtherComprehensiveIncomeLossDuringPeriod	49200000	USD
CY2014	clf	Total Amount Reclassified From Accumulated Other Comprehensive Income Loss During Period TotalAmountReclassifiedFromAccumulatedOtherComprehensiveIncomeLossDuringPeriod	35500000	USD
CY2015	clf	Total Amount Reclassified From Accumulated Other Comprehensive Income Loss During Period TotalAmountReclassifiedFromAccumulatedOtherComprehensiveIncomeLossDuringPeriod	237800000	USD
CY2014Q4	clf	Total Other Assets TotalOtherAssets	651400000	USD
CY2015Q4	clf	Total Other Assets TotalOtherAssets	93800000	USD
CY2015	clf	Trading Day Window Determining Number Of Common Shares Issuable On Conversion TradingDayWindowDeterminingNumberOfCommonSharesIssuableOnConversion	20
CY2013	clf	Undistributed Earnings Losses Related To Noncontrolling Interests UndistributedEarningsLossesRelatedToNoncontrollingInterests	17000000	USD
CY2014	clf	Undistributed Earnings Losses Related To Noncontrolling Interests UndistributedEarningsLossesRelatedToNoncontrollingInterests	-25500000	USD
CY2015	clf	Undistributed Earnings Losses Related To Noncontrolling Interests UndistributedEarningsLossesRelatedToNoncontrollingInterests	-200000	USD
CY2013	clf	Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromCurrencyTranslation	0	USD
CY2014	clf	Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromCurrencyTranslation	-200000	USD
CY2015	clf	Unrecognized Tax Benefits Increases Decreases Resulting From Currency Translation UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromCurrencyTranslation	0	USD
CY2015Q4	clf	Value Of Veba Trust Assets As Percentage Of Funding Obligation ValueOfVebaTrustAssetsAsPercentageOfFundingObligation	0.9
CY2013	clf	Weighted Average Number Of Shares Oustanding Depositary WeightedAverageNumberOfSharesOustandingDepositary	22139000	shares
CY2014	clf	Weighted Average Number Of Shares Oustanding Depositary WeightedAverageNumberOfSharesOustandingDepositary	0	shares
CY2015	clf	Weighted Average Number Of Shares Oustanding Depositary WeightedAverageNumberOfSharesOustandingDepositary	0	shares
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-12-31
CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0000764065
CY2016Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	180111831	shares
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2015Q2	dei	Entity Public Float EntityPublicFloat	653133194	USD
CY2015	dei	Entity Registrant Name EntityRegistrantName	CLIFFS NATURAL RESOURCES INC.
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2015	dei	Trading Symbol TradingSymbol	clf
CY2014Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	166100000	USD
CY2015Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	106300000	USD
CY2014Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	122700000	USD
CY2015Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	40200000	USD
CY2014Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	5500000	USD
CY2015Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	3600000	USD
CY2014Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	99400000	USD
CY2015Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	85700000	USD
CY2014Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	28500000	USD
CY2015Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	17300000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	2100000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	6200000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1000000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	100000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	8700000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-20900000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-18100000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	2600000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-382700000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-204900000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-291100000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-241400000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	316300000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	106700000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	64400000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	220700000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-55600000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-112900000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-245800000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-18000000	USD
CY2014Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2309800000	USD
CY2015Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2298900000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	19100000	USD
CY2014	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	21500000	USD
CY2015	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13900000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7100000	USD
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2014Q4	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	25200000	shares
CY2014	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	25200000	shares
CY2015	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	25300000	shares
CY2013	us-gaap	Asset Impairment Charges AssetImpairmentCharges	14300000	USD
CY2014	us-gaap	Asset Impairment Charges AssetImpairmentCharges	635500000	USD
CY2015	us-gaap	Asset Impairment Charges AssetImpairmentCharges	3300000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	177600000	USD
CY2014Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	142400000	USD
CY2015Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	206300000	USD
CY2014	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	-5700000	USD
CY2015	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	-6500000	USD
CY2014	us-gaap	Asset Retirement Obligation Foreign Currency Translation AssetRetirementObligationForeignCurrencyTranslation	-2400000	USD
CY2015	us-gaap	Asset Retirement Obligation Foreign Currency Translation AssetRetirementObligationForeignCurrencyTranslation	-1100000	USD
CY2014	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-38500000	USD
CY2015	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	58500000	USD
CY2013Q4	us-gaap	Assets Assets	13102900000	USD
CY2014Q4	us-gaap	Assets Assets	3147200000	USD
CY2015Q4	us-gaap	Assets Assets	2135500000	USD
CY2014Q4	us-gaap	Assets Current AssetsCurrent	1425300000	USD
CY2015Q4	us-gaap	Assets Current AssetsCurrent	982700000	USD
CY2014Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	67500000	USD
CY2015Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	37800000	USD
CY2014Q4	us-gaap	Assets Fair Value Disclosure Nonrecurring AssetsFairValueDisclosureNonrecurring	79400000	USD
CY2015Q1	us-gaap	Assets Fair Value Disclosure Nonrecurring AssetsFairValueDisclosureNonrecurring	397200000	USD
CY2014Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	326900000	USD
CY2015Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	14900000	USD
CY2013	us-gaap	Capital Expenditure Discontinued Operations CapitalExpenditureDiscontinuedOperations	681500000	USD
CY2014	us-gaap	Capital Expenditure Discontinued Operations CapitalExpenditureDiscontinuedOperations	170000000	USD
CY2015	us-gaap	Capital Expenditure Discontinued Operations CapitalExpenditureDiscontinuedOperations	24500000	USD
CY2013	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	109300000	USD
CY2014	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	58500000	USD
CY2015	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-14400000	USD
CY2013	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2014	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	-9900000	USD
CY2015	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	-1500000	USD
CY2014Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	72700000	USD
CY2015Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	32500000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	92600000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	24300000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	9000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	10000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	18000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	22300000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	9000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	18500000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	74100000	USD
CY2014Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	14900000	USD
CY2015Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	8700000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	271300000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	285200000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	30000000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	140300000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-44600000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-5700000	USD
CY2014Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	12008934	shares
CY2013	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.60
CY2014	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.60
CY2015	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.00
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.00
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2015Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2015Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2015Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2014Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	159546224	shares
CY2015Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	159546224	shares
CY2014Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	153246754	shares
CY2015Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	153591930	shares
CY2014Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	19800000	USD
CY2015Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	19800000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	30500000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-4800000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-4600000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	335000000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-8449300000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-525200000	USD
CY2013	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2406400000	USD
CY2014	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2487500000	USD
CY2015	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1776800000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	110400000	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-125200000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	8200000	USD
CY2013	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	94800000	USD
CY2014	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	11700000	USD
CY2015	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	900000	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	209200000	USD
CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-114100000	USD
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	9400000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4000000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-600000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	300000	USD
CY2015	us-gaap	Deconsolidation Gain Or Loss Amount DeconsolidationGainOrLossAmount	-528200000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	35000000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	20400000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	165800000	USD
CY2013	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-9600000	USD
CY2014	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	32600000	USD
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-5900000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-138100000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1153900000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	159800000	USD
CY2014Q4	us-gaap	Deferred Income Taxes And Other Assets Noncurrent DeferredIncomeTaxesAndOtherAssetsNoncurrent	175500000	USD
CY2015Q4	us-gaap	Deferred Income Taxes And Other Assets Noncurrent DeferredIncomeTaxesAndOtherAssetsNoncurrent	0	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3000000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-24900000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2014Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1592400000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	3637700000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Gross Current DeferredTaxAssetsGrossCurrent	23700000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	25600000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	57200000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	165800000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	0	USD
CY2014Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	440100000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	265200000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	679000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2791600000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	4500000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	11100000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	1900000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	3900000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	337800000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	189800000	USD
CY2014Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	41900000	USD
CY2015Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	59900000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	219100000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	218700000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	5800000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	99500000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	106600000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	50400000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	36500000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	29400000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	5300000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	95600000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	148900000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1152300000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3372500000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	274300000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	265200000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	7300000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1500000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Gross Current DeferredTaxLiabilitiesGrossCurrent	4000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	0	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	35500000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	-3100000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	-2500000	USD
CY2014Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	246000000	USD
CY2015Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	209700000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	980600000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	898900000	USD
CY2014	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Sold During Period DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod	3000000	USD
CY2015	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Sold During Period DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod	2500000	USD
CY2014	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Still Held DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld	15500000	USD
CY2015	us-gaap	Defined Benefit Plan Actual Return On Plan Assets Still Held DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld	5500000	USD
CY2014	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Plan Assets DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets	6800000	USD
CY2015	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Plan Assets DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets	5700000	USD
CY2014	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	5500000	USD
CY2015	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	3500000	USD
CY2014	us-gaap	Defined Benefit Plan Divestitures Plan Assets DefinedBenefitPlanDivestituresPlanAssets	-7000000	USD
CY2015	us-gaap	Defined Benefit Plan Divestitures Plan Assets DefinedBenefitPlanDivestituresPlanAssets	-8400000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	22600000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	2600000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	27200000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	3400000	USD
CY2013Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	169800000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	188100000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	193400000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Funded Percentage DefinedBenefitPlanFundedPercentage	0.70
CY2014	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500
CY2015	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.0500
CY2015	us-gaap	Defined Benefit Plans Estimated Future Employer Contributions In Next Fiscal Year DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear	4100000	USD
CY2013	us-gaap	Depletion Depletion	84900000	USD
CY2014	us-gaap	Depletion Depletion	79600000	USD
CY2015	us-gaap	Depletion Depletion	7400000	USD
CY2013	us-gaap	Depreciation Depreciation	191500000	USD
CY2014	us-gaap	Depreciation Depreciation	173000000	USD
CY2015	us-gaap	Depreciation Depreciation	119200000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	593300000	USD
CY2014	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	504000000	USD
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	134000000	USD
CY2014Q4	us-gaap	Derivative Assets DerivativeAssets	63200000	USD
CY2015Q4	us-gaap	Derivative Assets DerivativeAssets	7800000	USD
CY2014Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	63200000	USD
CY2015Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	7800000	USD
CY2014Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	41000000	USD
CY2015Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	4000000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-22100000	USD
CY2014	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-31000000	USD
CY2015	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-18800000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-51700000	USD
CY2014	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-28200000	USD
CY2015	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-6500000	USD
CY2013	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	141100000	USD
CY2014	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	161400000	USD
CY2015	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	5500000	USD
CY2014Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	9500000	USD
CY2015Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	4000000	USD
CY2013	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-184500000	USD
CY2014	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-1216000000	USD
CY2015	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-6000000	USD
CY2014Q4	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	383000000	USD
CY2015Q4	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	0	USD
CY2013	us-gaap	Dividends Common Stock DividendsCommonStock	91900000	USD
CY2014	us-gaap	Dividends Common Stock DividendsCommonStock	92500000	USD
CY2013	us-gaap	Dividends Preferred Stock DividendsPreferredStock	48700000	USD
CY2014	us-gaap	Dividends Preferred Stock DividendsPreferredStock	51200000	USD
CY2015	us-gaap	Dividends Preferred Stock DividendsPreferredStock	38400000	USD
CY2014Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	127600000	USD
CY2015Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	15800000	USD
CY2014Q4	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	11800000	USD
CY2015Q4	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	14500000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.40
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.55
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.01
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-38.49
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-8.48
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-47.52
CY2015Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.04
CY2015Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.10
CY2015Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.39
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.14
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.37
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.54
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.02
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-38.49
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.19
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-47.52
CY2015Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-4.26
CY2015Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.10
CY2015Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.39
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.13
CY2013	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-22400000	USD
CY2014	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-11600000	USD
CY2015	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1400000	USD
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.35
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.35
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.35
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.045
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-16.157
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.334
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.041
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-2.609
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.172
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	-1.152
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.016
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.209
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	4900000
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.004
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.321
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-6300000
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	5900000
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.019
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.005
CY2014	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	1.289
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.001
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	0
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	17.619
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	0
CY2014Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	73800000	USD
CY2015Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	53000000	USD
CY2015Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	23500000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y6M20D
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6700000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	7500000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	USD
CY2014Q4	us-gaap	Equity Method Investments EquityMethodInvestments	4100000	USD
CY2015Q4	us-gaap	Equity Method Investments EquityMethodInvestments	-2400000	USD
CY2014	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	187800000	USD
CY2015	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	29100000	USD
CY2014	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-9500000	USD
CY2015	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-3400000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	0	USD
CY2014	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	1000000	USD
CY2015	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	0	USD
CY2013	us-gaap	Gross Profit GrossProfit	1484400000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	0	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-187800000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-35100000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	182300000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	90500000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	0	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	0	USD
CY2013Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	57700000	USD
CY2014Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	63200000	USD
CY2015Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	7800000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-9500000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-61000000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	1000000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	67100000	USD
CY2013Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	-1000000	USD
CY2014Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	-9500000	USD
CY2015Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	-3400000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	16500000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	20200000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	3800000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	2500000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3500000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	4100000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	4300000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	79200000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	78400000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	62700000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	58200000	USD
CY2014Q4	us-gaap	Foreign Currency Contracts Liability Fair Value Disclosure ForeignCurrencyContractsLiabilityFairValueDisclosure	31500000	USD
CY2013	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	0	USD
CY2014	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	28800000	USD
CY2015	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	225900000	USD
CY2013	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2014	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	16200000	USD
CY2015	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	392900000	USD
CY2013Q4	us-gaap	Goodwill Goodwill	74500000	USD
CY2014Q4	us-gaap	Goodwill Goodwill	2000000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	2000000	USD
CY2014Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	-73500000	USD
CY2015Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	-73500000	USD
CY2014	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	73500000	USD
CY2015	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2014Q1	us-gaap	Gross Profit GrossProfit	190000000	USD
CY2014Q2	us-gaap	Gross Profit GrossProfit	183500000	USD
CY2014Q3	us-gaap	Gross Profit GrossProfit	256200000	USD
CY2014Q4	us-gaap	Gross Profit GrossProfit	256000000	USD
CY2014	us-gaap	Gross Profit GrossProfit	885700000	USD
CY2015Q1	us-gaap	Gross Profit GrossProfit	80800000	USD
CY2015Q2	us-gaap	Gross Profit GrossProfit	57300000	USD
CY2015Q3	us-gaap	Gross Profit GrossProfit	55100000	USD
CY2015Q4	us-gaap	Gross Profit GrossProfit	43300000	USD
CY2015	us-gaap	Gross Profit GrossProfit	236500000	USD
CY2014Q4	us-gaap	Guarantees Fair Value Disclosure GuaranteesFairValueDisclosure	0	USD
CY2015Q4	us-gaap	Guarantees Fair Value Disclosure GuaranteesFairValueDisclosure	96500000	USD
CY2014	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	13800000	USD
CY2013	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	864100000	USD
CY2014Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	70100000	USD
CY2014Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	87300000	USD
CY2014Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-276700000	USD
CY2014Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	166600000	USD
CY2014	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	30500000	USD
CY2015Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	168700000	USD
CY2015Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-43200000	USD
CY2015Q3	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	54500000	USD
CY2015Q4	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-37200000	USD
CY2015	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	135100000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-14800000	USD
CY2014Q1	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	400000	USD
CY2014Q2	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-3600000	USD
CY2014Q3	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-2500000	USD
CY2014Q4	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-3400000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-25900000	USD
CY2015Q1	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	1900000	USD
CY2015Q2	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-5000000	USD
CY2015Q3	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	4600000	USD
CY2015Q4	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-2400000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-8600000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	840800000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-447500000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	314200000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	350100000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	427800000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-1100000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1190900000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-19700000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	313100000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	878900000	USD
CY2014Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	69700000	USD
CY2014Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	90900000	USD
CY2014Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-274200000	USD
CY2014Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	170000000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	56400000	USD
CY2015Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	166800000	USD
CY2015Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-38200000	USD
CY2015Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	49900000	USD
CY2015Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-34800000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	143700000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	5.37
CY2014Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.37
CY2014Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.49
CY2014Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.89
CY2014Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.00
CY2014	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.14
CY2015Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.02
CY2015Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.28
CY2015Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.19
CY2015Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.24
CY2015	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.63
CY2013	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.95
CY2014Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.37
CY2014Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.48
CY2014Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.89
CY2014Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.94
CY2014	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.14
CY2015Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.94
CY2015Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.28
CY2015Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.19
CY2015Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.24
CY2015	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.63
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-517100000	USD
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-8368000000	USD
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-892100000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	66500000	USD
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	1113300000	USD
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	7700000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-450600000	USD
CY2014Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-140400000	USD
CY2014Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-76400000	USD
CY2014Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-5602900000	USD
CY2014Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-1451800000	USD
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-7254700000	USD
CY2015Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-928500000	USD
CY2015Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	103400000	USD
CY2015Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-43900000	USD
CY2015Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-23100000	USD
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-884400000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-2.97
CY2014Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.92
CY2014Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.50
CY2014Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-36.60
CY2014Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-9.48
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-47.38
CY2015Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-6.06
CY2015Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.67
CY2015Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.29
CY2015Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.15
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-5.77
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-2.58
CY2014Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.91
CY2014Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.50
CY2014Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-36.60
CY2014Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-8.13
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-47.38
CY2015Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-5.20
CY2015Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.67
CY2015Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.29
CY2015Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.15
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-5.76
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-74400000	USD
CY2014	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-9900000	USD
CY2015	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-100000	USD
CY2013	us-gaap	Income Tax Effects Allocated Directly To Equity Equity Transactions IncomeTaxEffectsAllocatedDirectlyToEquityEquityTransactions	3500000	USD
CY2014	us-gaap	Income Tax Effects Allocated Directly To Equity Equity Transactions IncomeTaxEffectsAllocatedDirectlyToEquityEquityTransactions	-4800000	USD
CY2015	us-gaap	Income Tax Effects Allocated Directly To Equity Equity Transactions IncomeTaxEffectsAllocatedDirectlyToEquityEquityTransactions	0	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	237600000	USD
CY2014Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-207300000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-86000000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	169300000	USD
CY2013	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	53200000	USD
CY2014	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	318300000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-104600000	USD
CY2013	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-48700000	USD
CY2014	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	51400000	USD
CY2015	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-53900000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	416800000	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-6900000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	109600000	USD
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2014	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	22700000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-19000000	USD
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4100000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	100000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5600000	USD
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-25400000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	200000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	0	USD
CY2014	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-347100000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	0	USD
CY2013	us-gaap	Income Tax Refunds Discontinued Operations IncomeTaxRefundsDiscontinuedOperations	20800000	USD
CY2014	us-gaap	Income Tax Refunds Discontinued Operations IncomeTaxRefundsDiscontinuedOperations	47800000	USD
CY2013	us-gaap	Income Taxes Paid IncomeTaxesPaid	153300000	USD
CY2014	us-gaap	Income Taxes Paid IncomeTaxesPaid	47300000	USD
CY2015	us-gaap	Income Taxes Paid IncomeTaxesPaid	5000000	USD
CY2014Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	217600000	USD
CY2015Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	5700000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-109800000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-38300000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-227700000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable And Other Operating Assets IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets	-138800000	USD
CY2014	us-gaap	Increase Decrease In Accounts Receivable And Other Operating Assets IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets	82800000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable And Other Operating Assets IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets	-369100000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-30800000	USD
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-37800000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	62000000	USD
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	458000	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	375000	shares
CY2014Q4	us-gaap	Insurance Settlements Receivable Current InsuranceSettlementsReceivableCurrent	0	USD
CY2015Q4	us-gaap	Insurance Settlements Receivable Current InsuranceSettlementsReceivableCurrent	93500000	USD
CY2013	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-186400000	USD
CY2014	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-176700000	USD
CY2015	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-228500000	USD
CY2013	us-gaap	Interest Paid InterestPaid	174400000	USD
CY2014	us-gaap	Interest Paid InterestPaid	176500000	USD
CY2015	us-gaap	Interest Paid InterestPaid	185600000	USD
CY2013	us-gaap	Interest Paid Discontinued Operations InterestPaidDiscontinuedOperations	1000000	USD
CY2014	us-gaap	Interest Paid Discontinued Operations InterestPaidDiscontinuedOperations	6100000	USD
CY2015	us-gaap	Interest Paid Discontinued Operations InterestPaidDiscontinuedOperations	4800000	USD
CY2014Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	158500000	USD
CY2015Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	273100000	USD
CY2014Q4	us-gaap	Inventory Net InventoryNet	260100000	USD
CY2015Q4	us-gaap	Inventory Net InventoryNet	329600000	USD
CY2014Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	16000000	USD
CY2015Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	31800000	USD
CY2014Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	101600000	USD
CY2015Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	56500000	USD
CY2014Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	4300000	USD
CY2014Q4	us-gaap	Land Land	11600000	USD
CY2015Q4	us-gaap	Land Land	11600000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	23600000	USD
CY2014	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	17800000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	12000000	USD
CY2014Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	149500000	USD
CY2015Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	186300000	USD
CY2014Q4	us-gaap	Liabilities Liabilities	4881500000	USD
CY2015Q4	us-gaap	Liabilities Liabilities	3947100000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3147200000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2135500000	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	954500000	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	581700000	USD
CY2014Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	41000000	USD
CY2015Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	4000000	USD
CY2014Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	399400000	USD
CY2015Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	6900000	USD
CY2014Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	427500000	USD
CY2015Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	0	USD
CY2014Q4	us-gaap	Long Term Debt LongTermDebt	2826500000	USD
CY2015Q4	us-gaap	Long Term Debt LongTermDebt	2699400000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	905300000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	0	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1681700000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	311200000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	0	USD
CY2014Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2826500000	USD
CY2015Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2699400000	USD
CY2014Q4	us-gaap	Loss Contingency Accrual Carrying Value Noncurrent LossContingencyAccrualCarryingValueNoncurrent	0	USD
CY2015Q4	us-gaap	Loss Contingency Accrual Carrying Value Noncurrent LossContingencyAccrualCarryingValueNoncurrent	93500000	USD
CY2014Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	165600000	USD
CY2015Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	231200000	USD
CY2014Q4	us-gaap	Mineral Properties Accumulated Depletion MineralPropertiesAccumulatedDepletion	-101000000	USD
CY2015Q4	us-gaap	Mineral Properties Accumulated Depletion MineralPropertiesAccumulatedDepletion	-108400000	USD
CY2014Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	488900000	USD
CY2015Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	488900000	USD
CY2014Q4	us-gaap	Mineral Properties Net MineralPropertiesNet	387900000	USD
CY2015Q4	us-gaap	Mineral Properties Net MineralPropertiesNet	380500000	USD
CY2014Q4	us-gaap	Minority Interest MinorityInterest	-303000000	USD
CY2015Q4	us-gaap	Minority Interest MinorityInterest	169800000	USD
CY2015	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	-51700000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-171900000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-288300000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	61000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-811300000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-103600000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-103200000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1145900000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	358900000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	37900000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	413500000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	-70300000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	10900000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	-5879600000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	-1285200000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	-7224200000	USD
CY2015Q1	us-gaap	Net Income Loss NetIncomeLoss	-759800000	USD
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	60200000	USD
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	10600000	USD
CY2015Q4	us-gaap	Net Income Loss NetIncomeLoss	-60300000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	-749300000	USD
CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-51700000	USD
CY2014	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1087400000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	900000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	364800000	USD
CY2014Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-83100000	USD
CY2014Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-1900000	USD
CY2014Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-5892400000	USD
CY2014Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-1298000000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-7275400000	USD
CY2015Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-772600000	USD
CY2015Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	60200000	USD
CY2015Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-15000000	USD
CY2015Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-60300000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-787700000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-189400000	USD
CY2014	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-149800000	USD
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	161800000	USD
CY2013	us-gaap	Operating Expenses OperatingExpenses	104100000	USD
CY2014	us-gaap	Operating Expenses OperatingExpenses	755600000	USD
CY2015	us-gaap	Operating Expenses OperatingExpenses	85200000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	1380300000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	130100000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	151300000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	36800000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	8400000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	4900000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	4800000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	6500000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	5000000	USD
CY2014	us-gaap	Option Indexed To Issuers Equity Strike Price1 OptionIndexedToIssuersEquityStrikePrice1	13.83
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	7200000	USD
CY2014	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	562000000	USD
CY2014Q4	us-gaap	Other Assets Current OtherAssetsCurrent	107700000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	30300000	USD
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	92900000	USD
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	93800000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3100000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-7200000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1700000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-29600000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	2800000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	20700000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-208600000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-42300000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	155600000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-26800000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-137700000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	223200000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	356200000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-7357100000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-521500000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-208300000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	91000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-45200000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-83200000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-37100000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	75200000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	40900000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	6200000	USD
CY2014Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	146600000	USD
CY2015Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	87300000	USD
CY2014Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	239100000	USD
CY2015Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	213800000	USD
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	3300000	USD
CY2014	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	21500000	USD
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-113100000	USD
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-3000000	USD
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	10700000	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2600000	USD
CY2013	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	74000000	USD
CY2014	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	34600000	USD
CY2015	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	28100000	USD
CY2014Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	22300000	USD
CY2015Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	11300000	USD
CY2014	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	3100000	USD
CY2015	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	2600000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-50300000	USD
CY2014	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-25500000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-6800000	USD
CY2013	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2014	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	9000000	USD
CY2015	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	33600000	USD
CY2013	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	0	USD
CY2014	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	0	USD
CY2015	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	40600000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	91900000	USD
CY2014	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	92500000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	0	USD
CY2013	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	35700000	USD
CY2014	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	51200000	USD
CY2015	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	51200000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	861600000	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	284100000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	80800000	USD
CY2014Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	268300000	USD
CY2015Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	221000000	USD
CY2013	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	1.66
CY2014	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	1.76
CY2015	us-gaap	Preferred Stock Dividends Per Share Cash Paid PreferredStockDividendsPerShareCashPaid	1.32
CY2013	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	1.66
CY2014	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	1.76
CY2015	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	1.32
CY2014Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0
CY2015Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0
CY2013	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	23300000	USD
CY2014	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	-25700000	USD
CY2015	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	100000	USD
CY2013	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	49400000	USD
CY2014	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	54700000	USD
CY2015	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	211400000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	285300000	USD
CY2014	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	709400000	USD
CY2014	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	0	USD
CY2015	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2014	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2015	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	503500000	USD
CY2013	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	670500000	USD
CY2014	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1219500000	USD
CY2015	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	309800000	USD
CY2013	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	-5200000	USD
CY2014	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	100000	USD
CY2015	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	-200000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-52000000	USD
CY2014	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-60200000	USD
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-45900000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	361800000	USD
CY2014	us-gaap	Profit Loss ProfitLoss	-8311600000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	-748400000	USD
CY2013	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	70800000	USD
CY2014	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	65500000	USD
CY2015	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	72200000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1870200000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1970300000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1870800000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1070500000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1059000000	USD
CY2013	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0.0	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	7100000	USD
CY2013	us-gaap	Reimbursement Revenue ReimbursementRevenue	259000000	USD
CY2014	us-gaap	Reimbursement Revenue ReimbursementRevenue	278000000	USD
CY2015	us-gaap	Reimbursement Revenue ReimbursementRevenue	180900000	USD
CY2013	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	995500000	USD
CY2014	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	1219500000	USD
CY2015	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	309800000	USD
CY2013	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	847100000	USD
CY2014	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	USD
CY2015	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	USD
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-3960700000	USD
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-4748400000	USD
CY2013	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1038800000	USD
CY2014	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1011400000	USD
CY2015	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	671100000	USD
CY2013	us-gaap	Revenues Revenues	3890800000	USD
CY2014Q1	us-gaap	Revenues Revenues	615500000	USD
CY2014Q2	us-gaap	Revenues Revenues	747700000	USD
CY2014Q3	us-gaap	Revenues Revenues	979700000	USD
CY2014Q4	us-gaap	Revenues Revenues	1030300000	USD
CY2014	us-gaap	Revenues Revenues	3373200000	USD
CY2015Q1	us-gaap	Revenues Revenues	446000000	USD
CY2015Q2	us-gaap	Revenues Revenues	498100000	USD
CY2015Q3	us-gaap	Revenues Revenues	593200000	USD
CY2015Q4	us-gaap	Revenues Revenues	476000000	USD
CY2015	us-gaap	Revenues Revenues	2013300000	USD
CY2013	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	3631800000	USD
CY2014	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	3095200000	USD
CY2015	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	1832400000	USD
CY2013	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	163800000	USD
CY2014	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	154700000	USD
CY2015	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	110000000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	453127	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	10.50
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	3769700	shares
CY2015	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	6.78
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CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	0	USD
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	490902	shares
CY2015Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	83334	shares
CY2015Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	0	USD
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y10M25D
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CY2015	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P5Y10M16D
CY2015Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	9.67
CY2013	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	-102100000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	-285300000	USD
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	14200000	USD
CY2014	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	100000	USD
CY2015	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	9800000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	-1431300000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	-1981400000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5760900000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6884300000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-1734300000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-1811600000	USD
CY2014Q4	us-gaap	Supplies Supplies	118600000	USD
CY2015Q4	us-gaap	Supplies Supplies	110400000	USD
CY2014	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	537800000	USD
CY2013	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	12500000	USD
CY2014	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	0	USD
CY2015	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	84100000	USD
CY2014Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	40700000	USD
CY2015Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	35200000	USD
CY2014Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	6299470	shares
CY2015Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	5954294	shares
CY2014Q4	us-gaap	Treasury Stock Value TreasuryStockValue	285700000	USD
CY2015Q4	us-gaap	Treasury Stock Value TreasuryStockValue	265000000	USD
CY2014Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	16800000	USD
CY2015Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	29100000	USD
CY2015Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	0	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	53500000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	71800000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	72600000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	156200000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-1100000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5300000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5900000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	78500000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	13000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	6700000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2014	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-3700000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	-500000	USD
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CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	174323000	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	153098000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	153605000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	151726000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	153098000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	153230000	shares
CY2015	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:10pt;"><font style="font-family:Arial;font-size:10pt;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:10pt;"><font style="font-family:Arial;font-size:10pt;">The terms of one of our U.S. Iron Ore pellet supply agreements required 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 was 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:10pt;">Statements of Consolidated Financial Position</font><font style="font-family:Arial;font-size:10pt;"> upon receipt of payment. Revenue is recognized over the life of the supply agreement, which extends until 2022, in equal annual installments. As of December 31, 2015 and </font><font style="font-family:Arial;font-size:10pt;">2014</font><font style="font-family:Arial;font-size:10pt;">, installment amounts received in excess of sales totaled </font><font style="font-family:Arial;font-size:10pt;">$89.9 million</font><font style="font-family:Arial;font-size:10pt;"> and </font><font style="font-family:Arial;font-size:10pt;">$102.8 million</font><font style="font-family:Arial;font-size:10pt;">, respectively. As of December 31, 2015, deferred revenue of </font><font style="font-family:Arial;font-size:10pt;">$12.8 million</font><font style="font-family:Arial;font-size:10pt;"> was recorded in </font><font style="font-family:Arial;font-size:10pt;font-style:italic;">Other current liabilities</font><font style="font-family:Arial;font-size:10pt;"> and </font><font style="font-family:Arial;font-size:10pt;">$77.1 million</font><font style="font-family:Arial;font-size:10pt;"> was recorded as long term in </font><font style="font-family:Arial;font-size:10pt;font-style:italic;">Other liabilities</font><font style="font-family:Arial;font-size:10pt;"> in the </font><font style="font-family:Arial;font-size:10pt;">Statements of Consolidated Financial Position</font><font style="font-family:Arial;font-size:10pt;">.</font><font style="font-family:Arial;font-size:10pt;font-style:italic;"> </font><font style="font-family:Arial;font-size:10pt;">As of December 31, 2014, deferred revenue of </font><font style="font-family:Arial;font-size:10pt;">$12.8 million</font><font style="font-family:Arial;font-size:10pt;"> was recorded in </font><font style="font-family:Arial;font-size:10pt;font-style:italic;">Other current liabilities</font><font style="font-family:Arial;font-size:10pt;"> and </font><font style="font-family:Arial;font-size:10pt;">$90.0 million</font><font style="font-family:Arial;font-size:10pt;"> was recorded as long term in </font><font style="font-family:Arial;font-size:10pt;font-style:italic;">Other liabilities</font><font style="font-family:Arial;font-size:10pt;"> in the </font><font style="font-family:Arial;font-size:10pt;">Statements of Consolidated Financial Position</font><font style="font-family:Arial;font-size:10pt;">. </font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">In 2014, due to the payment terms and the timing of cash receipts near year-end, cash receipts exceeded shipments. The shipments were completed early in the subsequent years. 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:10pt;">$29.3 million</font><font style="font-family:Arial;font-size:10pt;"> was deferred on the </font><font style="font-family:Arial;font-size:10pt;">December 31, 2014</font><font style="font-family:Arial;font-size:10pt;"> </font><font style="font-family:Arial;font-size:10pt;">Statements of Consolidated Financial Position</font><font style="font-family:Arial;font-size:10pt;">. </font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;"></font></div></div>
CY2015	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:10pt;"><font style="font-family:Arial;font-size:10pt;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:10pt;"><font style="font-family:Arial;font-size:10pt;">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 long-lived assets and investments; valuation of inventory; valuation of post-employment, post-retirement and other employee benefit liabilities; valuation of 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 the results of operations and financial position in future periods.</font></div></div>

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2015 Q4 Form 10-K Financial Statement

#000076406516000183 Filed on February 24, 2016

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$CLF CLEVELAND-CLIFFS INC. Stock $clf

2015 Q4 Form 10-K Financial Statement

#000076406516000183 Filed on February 24, 2016

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Files In Submission

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