Cleveland-Cliffs Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

FAIR VALUE OF FINANCIAL INSTRUMENTS (Narrative) (Details)

v2.4.0.8

FAIR VALUE OF FINANCIAL INSTRUMENTS (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended			6 Months Ended	12 Months Ended						6 Months Ended	12 Months Ended			6 Months Ended	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Empire [Member]	Dec. 31, 2012 Empire [Member]	Dec. 31, 2002 Empire [Member]	Dec. 31, 2002 Prior [Member] Empire [Member]	Dec. 31, 2002 Current [Member] Empire [Member]	Jun. 30, 2013 Other Current Assets [Member] Empire [Member]	Dec. 31, 2012 Other Current Assets [Member] Empire [Member]	Jun. 30, 2013 U.S. Iron Ore [Member]	Dec. 31, 2012 U.S. Iron Ore [Member]	Jun. 30, 2013 Amapa [Member]	Dec. 31, 2012 Amapa [Member]	Jun. 30, 2013 Equity Method Investments [Member] Amapa [Member]	Dec. 31, 2012 Equity Method Investments [Member] Amapa [Member]
Fair Value, Assets And Liabilities Components [Line Items]
Transfers out of Level 3	$ 0	$ 0	$ 0	$ 0
Transfers into Level 3	0	0	0	0
Management Estimate of 62% Fe			62.00%
Maximum deferred portion of supplemental payments													22.3
Supply agreement, customer receivable, stated interest rate	9.00%		9.00%
Supply agreement, customer receivable, description of variable rate basis			prime rate
Payments for (Proceeds from) Loans Receivable													22.3
Other current assets	316.3		316.3		321.6									22.3
Supply agreement, customer receivable, basis spread on variable rate	3.50%		3.50%
Fair value of the receivable						16.7	21.3							21.3
Estimated credit-adjusted risk-free interest rate						2.40%	2.85%							2.81%
Interest Percentage									46.70%								30.00%
Equity Method Investments, Fair Value Disclosure															0	72.5
Percent ownership interest after transaction										79.00%
Long term accounts notes and loans receivable net noncurrent						15.4	19.3	120.0			10.0	10.0
Equity Method Investment, Other than Temporary Impairment																	$ 67.6	$ 365.4

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Loans Receivable, Interest Rate, Stated Percentage

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Management Estimate of 62% Fe

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin.

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The aggregate of amounts due from customers or clients more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money at a future date more than one year from the balance sheet date, reduced to their estimated net realizable fair value by an allowance established by the Company of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).

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