|
GOODWILL AND OTHER INTANGIBLE ASSETS AND LIABILITIES (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Goodwill [Line Items] | Ìý | Ìý |
| Below Market Sales Contract, Remaining Life | 2 years | Ìý |
| Product | $ 399.5us-gaap_SalesRevenueGoodsNet | $ 559.2us-gaap_SalesRevenueGoodsNet |
| Cost of Sales [Member] | Ìý | Ìý |
| Goodwill [Line Items] | Ìý | Ìý |
| Amortization expense relating to intangible assets |
1.1us-gaap_AmortizationOfIntangibleAssets / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember |
2.3us-gaap_AmortizationOfIntangibleAssets / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember |
| Product Revenues [Member] | Sales Revenue, Goods, Net [Member] | Ìý | Ìý |
| Goodwill [Line Items] | Ìý | Ìý |
| Product |
$ 0us-gaap_SalesRevenueGoodsNet / clf_BelowMarketSalesContractsAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_IncomeStatementLocationAxis = us-gaap_SalesRevenueGoodsNetMember |
Ìý |
| X | ||||||||||
|
- Definition
Below Market Sales Contract, Remaining Life No definition available.
|
| X | ||||||||||
|
- Definition
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|