Cleveland-Cliffs Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

RELATED PARTIES (Narrative) (Details)

RELATED PARTIES (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Facility	Dec. 31, 2013
Segment Reporting Information [Line Items]
Due from Related Parties, Current	151.1us-gaap_DueFromRelatedPartiesCurrent	$ 132.0us-gaap_DueFromRelatedPartiesCurrent
Due to Related Parties, Current	13.6us-gaap_DueToRelatedPartiesCurrent	$ 25.1us-gaap_DueToRelatedPartiesCurrent
U.S. Iron Ore [Member]
Segment Reporting Information [Line Items]
Number Of Mines	5
Eastern Canadian Iron Ore [Member]
Segment Reporting Information [Line Items]
Number Of Mines	2
Joint Venture Partners [Member] \| U.S. Iron Ore [Member]
Segment Reporting Information [Line Items]
Number Of Mines	3
Joint Venture Partners [Member] \| Eastern Canadian Iron Ore [Member]
Segment Reporting Information [Line Items]
Number Of Mines	1

- 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).

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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).

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