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GOODWILL AND OTHER INTANGIBLE ASSETS AND LIABILITIES (Tables) | 12 Months Ended
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Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule Of Goodwill | The following table summarizes changes in the carrying amount of goodwill allocated by operating segment for the years ended December 31, 2015 and December 31, 2014:
| (In Millions)
| December 31, 2015 |  | December 31, 2014
| U.S. Iron Ore |  | Asia Pacific Iron Ore |  | Total |  | U.S. Iron Ore |  | Asia Pacific Iron Ore |  | Total
Beginning Balance | $ | 2.0 |  |  | $ | — |  |  | $ | 2.0 |  |  | $ | 2.0 |  |  | $ | 72.5 |  |  | $ | 74.5 |
Impairment | — |  |  | — |  |  | — |  |  | — |  |  | (73.5 | ) |  | (73.5 | )
Impact of foreign currency translation | — |  |  | — |  |  | — |  |  | — |  |  | 1.0 |  |  | 1.0 |
Ending Balance | $ | 2.0 |  |  | $ | — |  |  | $ | 2.0 |  |  | $ | 2.0 |  |  | $ | — |  |  | $ | 2.0 |
Accumulated goodwill impairment loss | $ | — |  |  | $ | (73.5 | ) |  | $ | (73.5 | ) |  | $ | — |  |  | $ | (73.5 | ) |  | $ | (73.5 | )
Schedule Of Finite-Lived Intangible Assets By Major Class | Following is a summary of intangible assets and liabilities as of December 31, 2015 and December 31, 2014:
|  |  | (In Millions)
|  |  | December 31, 2015 |  | December 31, 2014
| Classification |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Definite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Permits | Other non-current assets |  | $ | 78.4 |  |  | $ | (20.2 | ) |  | $ | 58.2 |  |  | $ | 79.2 |  |  | $ | (16.5 | ) |  | $ | 62.7 |
Total intangible assets |  |  | $ | 78.4 |  |  | $ | (20.2 | ) |  | $ | 58.2 |  |  | $ | 79.2 |  |  | $ | (16.5 | ) |  | $ | 62.7 |
Below-market sales contracts | Other current liabilities |  | $ | (23.1 | ) |  | $ | — |  |  | $ | (23.1 | ) |  | $ | (23.0 | ) |  | $ | — |  |  | $ | (23.0 | )
Below-market sales contracts | Other liabilities |  | (205.8 | ) |  | 205.8 |  |  | — |  |  | (205.9 | ) |  | 182.8 |  |  | (23.1 | )
Total below-market sales contracts |  |  | $ | (228.9 | ) |  | $ | 205.8 |  |  | $ | (23.1 | ) |  | $ | (228.9 | ) |  | $ | 182.8 |  |  | $ | (46.1 | )
Estimated Amortization Expense Relating To Intangible Assets | The estimated amortization expense relating to intangible assets for each of the five succeeding years is as follows:
| (In Millions)
| Amount
Year Ending December 31 |
2016 | 3.8 |
2017 | 4.3 |
2018 | 4.1 |
2019 | 3.5 |
2020 | 2.5 |
Total | $ | 18.2 |

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