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RELATED PARTIES (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
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Mar. 31, 2015
Facility
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Dec. 31, 2014
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| Segment Reporting Information [Line Items] | Ìý | Ìý |
| Due from Related Parties, Current | 61.2us-gaap_DueFromRelatedPartiesCurrent | $ 127.6us-gaap_DueFromRelatedPartiesCurrent |
| Due to Related Parties, Current | 0.1us-gaap_DueToRelatedPartiesCurrent | $ 11.8us-gaap_DueToRelatedPartiesCurrent |
| U.S. Iron Ore [Member] | Ìý | Ìý |
| Segment Reporting Information [Line Items] | Ìý | Ìý |
| Number of mines (in number of facilities) |
5clf_NumberOfMines / us-gaap_StatementBusinessSegmentsAxis = clf_USIronOreMember |
Ìý |
| Joint Venture Partners [Member] | U.S. Iron Ore [Member] | Ìý | Ìý |
| Segment Reporting Information [Line Items] | Ìý | Ìý |
| Number of mines (in number of facilities) |
3clf_NumberOfMines / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_CoVenturerMember / us-gaap_StatementBusinessSegmentsAxis = clf_USIronOreMember |
Ìý |
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- Definition
Number of mines No definition available.
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- Definition
The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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- Details
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