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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables) | 3 Months Ended
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Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule Of Subsidiaries | The unaudited condensed consolidated financial statements include our accounts and the accounts of our wholly-owned and majority-owned subsidiaries, including the following operations as of March 31, 2016:
Name |  | Location |  | Ownership Interest |  | Operation |  | Status of Operations
Northshore |  | Minnesota |  | 100.0% |  | Iron Ore |  | Active
United Taconite |  | Minnesota |  | 100.0% |  | Iron Ore |  | Active
Tilden |  | Michigan |  | 85.0% |  | Iron Ore |  | Active
Empire |  | Michigan |  | 79.0% |  | Iron Ore |  | Active
Koolyanobbing |  | Western Australia |  | 100.0% |  | Iron Ore |  | Active

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