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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies) | 6 Months Ended
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Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule Of Subsidiaries | Basis of Consolidation The unaudited condensed consolidated financial statements include our accounts and the accounts of our wholly-owned subsidiaries, including the following operations as of June 30, 2018:
Name |  | Location |  | Status of Operations
Northshore |  | Minnesota |  | Active
United Taconite |  | Minnesota |  | Active
Tilden |  | Michigan |  | Active
Empire |  | Michigan |  | Indefinitely Idled
Koolyanobbing 1 |  | Western Australia |  | Not Active
1 During June 2018, we completed the final planned shipment from Asia Pacific Iron Ore and commenced selling its assets. Refer to NOTE 16 - DISCONTINUED OPERATIONS.
Intercompany transactions and balances are eliminated upon consolidation.
Equity Method Investments | Equity Method Investments Our 23% ownership interest in Hibbing is recorded as an equity method investment. As of June 30, 2018 and December 31, 2017, our investment in Hibbing was $8.0 million and $11.0 million, respectively, classified as Other liabilities in the Statements of Unaudited Condensed Consolidated Financial Position.
Foreign Currency | Foreign Currency Our financial statements are prepared with the U.S. dollar as the reporting currency. The functional currency of our Australian subsidiaries is the Australian dollar. Refer to NOTE 16 - DISCONTINUED OPERATIONS for further information regarding our Australian subsidiaries. The functional currency of all other international subsidiaries is the U.S. dollar. To the extent that monetary assets and liabilities, including short-term intercompany loans, are recorded in a currency other than the functional currency, these amounts are remeasured each reporting period, with the resulting gain or loss being recorded in the Statements of Unaudited Condensed Consolidated Operations. Transaction gains and losses resulting from remeasurement of short-term intercompany loans are included in Miscellaneous – net in the Statements of Unaudited Condensed Consolidated Operations. The following represents the transaction gains and losses resulting from remeasurement:
|  | (In Millions)
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Short-term intercompany loans |  | $ | (0.1 | ) |  | $ | 1.5 |  |  | $ | (0.3 | ) |  | $ | 16.6 |
Other |  | — |  |  | (1.0 | ) |  | (0.2 | ) |  | (1.3 | )
Net impact of transaction gains (losses) resulting from remeasurement |  | $ | (0.1 | ) |  | $ | 0.5 |  |  | $ | (0.5 | ) |  | $ | 15.3 |
Significant Accounting Policies | Significant Accounting Policies A detailed description of our significant accounting policies can be found in the audited financial statements for the fiscal year ended December 31, 2017 included in our Annual Report on Form 10-K filed with the SEC. There have been no material changes in our significant accounting policies and estimates from those disclosed therein other than those related to the adoption of Topic 606. Refer to NOTE 2 - NEW ACCOUNTING STANDARDS for further information.

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- Definition Disclosure of accounting policy for subsidiaries or other investments that are consolidated, including the accounting treatment for intercompany accounts or transactions and any noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84161450&loc=d3e5614-111684 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.3A-04) -URI http://asc.fasb.org/extlink&oid=27015204&loc=d3e355119-122828 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.3A-03) -URI http://asc.fasb.org/extlink&oid=27015204&loc=d3e355100-122828 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.3A-02) -URI http://asc.fasb.org/extlink&oid=27015204&loc=d3e355033-122828 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 + Details
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