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

Annual report pursuant to Section 13 and 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
Uncategorized

CASH FLOW INFORMATION (Narrative) (Details)

v2.4.1.9

CASH FLOW INFORMATION (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 19, 2014	Nov. 03, 2014	Aug. 01, 2014	Feb. 03, 2014	Nov. 01, 2013	Aug. 01, 2013	Mar. 20, 2013
Dividends Payable [Line Items]
Depositary Share Interest in a Share of 7% Series A Mandatory Convertible Preferred Stock, Class A					0.025
Preferred stock cash dividend	$ 12.8us-gaap_DividendsPreferredStock	$ 12.8us-gaap_DividendsPreferredStock	$ 12.8us-gaap_DividendsPreferredStock	$ 12.8us-gaap_DividendsPreferredStock	$ 51.2us-gaap_DividendsPreferredStock	$ 48.7us-gaap_DividendsPreferredStock	$ 0us-gaap_DividendsPreferredStock
Preferred Class A [Member]
Dividends Payable [Line Items]
Series A Mandatory Convertible Preferred Stock, Class A, Percentage					7.00%
Dividends payable, per share								$ 17.50	$ 17.5000	$ 0.44	$ 0.44	$ 0.44	$ 17.50	$ 13.6111
Preferred stock cash dividend	$ 12.8				$ 51.2
Depositary Shares [Member]
Dividends Payable [Line Items]
Dividends payable, per share								$ 0.44	$ 0.44	$ 17.5000	$ 17.5000	$ 17.5000	$ 0.44	$ 0.34

- Definition

Depositary Share Interest in a Share of 7% Series A Mandatory Convertible Preferred Stock, Class A

+ References

No definition available.

+ Details

Name:	clf_DepositaryShareInterestInShareOf7SeriesMandatoryConvertiblePreferredStockClassA
Namespace Prefix:	clf_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

Name:	us-gaap_DividendsPayableAmountPerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DividendsPayableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 405

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

+ Details

Name:	us-gaap_DividendsPreferredStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

Name:	us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_StatementClassOfStockAxis=clf_DepositarySharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_PreferredClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: