根据第13和15(d)条提交的年度报告

累计其他综合收益(亏损)明细累计其他综合收益(亏损)成分明细(明细)

v2.4.1.9
累计其他综合收益(亏损)明细累计其他综合收益(亏损)构成(明细)(美元)
除非另有说明,单位为百万
12个月结束
2014年12月31日
2013年12月31日
2012年12月31日
累计其他综合收益(亏损)分项详情〔细目〕      
衍生工具,(收益)损失从累积的OCI重新分类为收益,有效部分,净额 (31.0美元)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet (22.1美元)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet 18.1美元us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
当期累计其他综合收益(损失)重分类的总额 33.3clf_TotalAmountReclassifiedFromAccumulatedOtherComprehensiveIncomeLossDuringPeriod 53.6clf_TotalAmountReclassifiedFromAccumulatedOtherComprehensiveIncomeLossDuringPeriod  
累积设定受益计划调整〔成员〕      
累计其他综合收益(亏损)分项详情〔细目〕      
先前服务(成本)贷记的摊销 0.9us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
[1] 0.6us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
[1]  
固定收益计划,收益(损失)摊销 19.1us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
[1] 41.4us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
[1]  
固定收益计划,削减 (5.0)us-gaap_DefinedBenefitPlanCurtailments
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
0us-gaap_DefinedBenefitPlanCurtailments
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
 
固定收益计划,特殊终止福利 3.4us-gaap_DefinedBenefitPlanSpecialTerminationBenefits
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
0us-gaap_DefinedBenefitPlanSpecialTerminationBenefits
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
 
其他综合收益(损失),重新分类,养老金和其他退休后福利计划,净收益(损失)确认为净定期收益成本,税前 16.6us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
40.8us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
 
其他综合收益(损失),养老金和其他退休后福利计划,期间产生的未摊销净收益(损失),税收 (5.8)us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
(14.3)us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
 
从累计其他综合收益(损失)中重新分类的金额 10.8us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
26.5us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember
 
有价证券未实现利得(亏损)[成员][成员]      
累计其他综合收益(亏损)分项详情〔细目〕      
有价证券,未实现收益(损失) (11.4)us-gaap_MarketableSecuritiesUnrealizedGainLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossonMarketableSecuritiesMemberMember
(0.2)us-gaap_MarketableSecuritiesUnrealizedGainLoss
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossonMarketableSecuritiesMemberMember
 
累积非暂时性减值[成员]      
累计其他综合收益(亏损)分项详情〔细目〕      
除临时减值损失外,投资,其他综合损失部分,税前,包括归属于非控制性权益的部分,可供出售证券 (0.5)us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedOtherThanTemporaryImpairmentMember
5.3us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= us-gaap_AccumulatedOtherThanTemporaryImpairmentMember
 
有价证券的未实现利得(亏损)及暂时性减值除外[成员][成员]      
累计其他综合收益(亏损)分项详情〔细目〕      
税前期间证券产生的其他综合收益(亏损)、未实现持有收益(亏损) (11.9)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossonMarketableSecuritiesandOtherthanTemporaryImpairmentMember
5.1us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossonMarketableSecuritiesandOtherthanTemporaryImpairmentMember
 
其他综合收益(损失),期间产生的未实现持有证券收益(损失),税费 3.4us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossonMarketableSecuritiesandOtherthanTemporaryImpairmentMember
(0.1)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossonMarketableSecuritiesandOtherthanTemporaryImpairmentMember
 
其他综合收益(损失),期间产生的未实现持有证券收益(损失),税后净额 (8.5)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossonMarketableSecuritiesandOtherthanTemporaryImpairmentMember
5.0us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossonMarketableSecuritiesandOtherthanTemporaryImpairmentMember
 
衍生品未实现利得亏损[成员]      
累计其他综合收益(亏损)分项详情〔细目〕      
税前期间产生的其他综合收益(损失)、衍生品未实现收益(损失) 45.6us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
32.3us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
 
其他综合收益(损失)、期间产生的衍生品未实现收益(损失)、税费 (14.6)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
(10.2)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
 
衍生金融工具未实现净利得(亏损),扣除税后 31.0us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
22.1us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
 
衍生品未实现损益[会员]|澳洲对冲合约[会员]      
累计其他综合收益(亏损)分项详情〔细目〕      
衍生工具,(收益)损失从累积的OCI重新分类为收益,有效部分,净额 18.9us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
/ us-gaap_DerivativeInstrumentRiskAxis
= clf_AustralianHedgeContractsMember
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
17.0us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
/ us-gaap_DerivativeInstrumentRiskAxis
= clf_AustralianHedgeContractsMember
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
 
衍生品未实现利得亏损[成员]|加拿大对冲合约[成员]      
累计其他综合收益(亏损)分项详情〔细目〕      
衍生工具,(收益)损失从累积的OCI重新分类为收益,有效部分,净额 26.7美元us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
/ us-gaap_DerivativeInstrumentRiskAxis
= clf_CanadianHedgeContractsMember
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
15.3美元us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
/ us-gaap_DerivativeInstrumentRiskAxis
= clf_CanadianHedgeContractsMember
/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis
= clf_UnrealizedGainLossOnDerivativesMember
 
[1] 这些累积的其他综合收益部分包括在截至2014年12月31日和2013年12月31日的年度确认的净定期福利成本中。更多信息见注7 -养老金和其他退休后福利。