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

DISCONTINUED OPERATIONS (Details)

v2.4.1.9

DISCONTINUED OPERATIONS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended						12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 10, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale Price of CLCC Assets							$ 174.0clf_SalePriceofCLCCAssets
Proceeds from sale of Cliffs Logan County Coal							155.0	0	0
Statements of Consolidated Operations
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	0	0	0	2.0	0	0	0	2.0	35.9
Sonoma [Member]
Statements of Consolidated Operations
Disposal Group, Including Discontinued Operation, Revenue							0	0	151.6
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	0						0	2.0	35.9
Sonoma [Member] \| Asia Pacific Coal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage Of Ownership Interests										45.00%
Income (Loss) From Discontinued Operations [Member] \| Sonoma [Member]
Statements of Consolidated Operations
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax							0	0	38.0
Discontinued Operation, Tax (Expense) Benefit from Provision for (Gain) Loss on Disposal									8.1
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax									(2.1)
Discontinued Operation, Tax Effect of Discontinued Operation									$ 2.4
Wabush [Member]
Statements of Consolidated Operations
Percentage of Consolidated Revenues							8.00%
Percentage of Consolidated Assets							4.00%
CLCC [Member]
Statements of Consolidated Operations
Percentage of Consolidated Revenues							5.00%
Percentage of Consolidated Assets							8.00%
Coal Revenue [Member]
Statements of Consolidated Operations
Percentage of Consolidated Revenues							15.00%

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Proceeds from sale of Cliffs Logan County Coal

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Tax benefit from provision recognizing a loss for initial, or subsequent, write-down to fair value (less cost to sell) of a of a disposal group that is classified as a component of the entity, which remains unsold as of the reporting date. May include a tax on the (gain) for the recognition of a subsequent increase in fair value (less cost to sell), but not in excess of the cumulative loss previously recognized through write-downs.

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