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ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS (Tables) | 12 Months Ended
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Dec. 31, 2014
Environmental Remediation Obligations [Abstract] |
Summary Of Mine Closure Obligations | The following is a summary of the obligations as of December 31, 2014 and 2013:
| (In Millions)
| December 31,
| 2014 |  | 2013
Environmental | $ | 5.5 |  |  | $ | 8.4 |
Mine closure |  |  |
LTVSMC | 22.9 |  |  | 22.0 |
Operating mines: |  |  |
U.S. Iron Ore | 120.9 |  |  | 152.2 |
Asia Pacific Iron Ore | 21.5 |  |  | 25.5 |
North American Coal | 33.9 |  |  | 34.7 |
Eastern Canadian Iron Ore | 56.5 |  |  | 78.2 |
Total mine closure | 255.7 |  |  | 312.6 |
Total environmental and mine closure obligations | 261.2 |  |  | 321.0 |
Less current portion | 5.2 |  |  | 11.3 |
Long-term environmental and mine closure obligations | $ | 256.0 |  |  | $ | 309.7 |
Asset Retirement Obligation Disclosure | The following represents a roll forward of our asset retirement obligation liability related to our active mining locations for the years ended December 31, 2014 and 2013:
| (In Millions)
| December 31,
| 2014 |  | 2013
Asset retirement obligation at beginning of period | $ | 290.6 |  |  | $ | 231.1 |
Accretion expense | 14.5 |  |  | 18.1 |
Exchange rate changes | (2.4 | ) |  | (3.4 | )
Revision in estimated cash flows | (65.2 | ) |  | 44.8 |
Disposal of CLCC Assets | (4.7 | ) |  | $ | — |
Asset retirement obligation at end of period | $ | 232.8 |  |  | $ | 290.6 |

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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