根据第13或15(d)条提交的季度报告

税前退出成本（详情）

v2.4.1.9
税前退出成本（详细信息）（加拿大实体[成员]，美元）
除非另有说明，单位为百万
3个月结束
2015年3月31日
2014年3月31日
加拿大实体[成员]
   
税前退出成本〔分项〕    
拆分后的投资减值 (476.0美元)clf_InvestmentImpairmentonDeconsolidation
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= clf_CanadianEntitiesMember 		 
或有负债 (342.7)clf_ContingentLiabilities
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= clf_CanadianEntitiesMember 		 
企业退出成本 (818.7美元)us-gaap_BusinessExitCosts1
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= clf_CanadianEntitiesMember 		0美元us-gaap_BusinessExitCosts1
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= clf_CanadianEntitiesMember