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INCOME TAXES: (Details 3) (USD $) In Millions, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 AMC | Mar. 27, 2009 AMC | Dec. 31, 2012 Asarco
--- | --- | --- | --- | --- | ---
Assets: |  |  |  |  |
Inventories | $ 23.6 | $ 23.2 |  |  |
Trade receivables |  | 18.1 |  |  |
Capitalized exploration expenses | 24.4 | 31.9 |  |  |
U.S. foreign tax credit carryforward | 202.3 | 174.4 |  |  |
U.S tax effect of Peruvian deferred tax liability | 33.4 | 3.7 |  |  |
Reserves | 77.5 | 69.7 |  |  |
Mexican tax loss carryforward | 26.9 | 35.7 |  |  |
Labor share buyback | 30.0 | 30.1 |  |  |
Other | 32.6 | 14.0 |  |  |
Total deferred tax assets | 450.7 | 400.8 |  |  |
Liabilities: |  |  |  |  |
Property, plant and equipment | (125.0) | (166.2) |  |  |
Deferred charges | (81.6) | (35.3) |  |  |
Mexican tax on consolidated dividends | (34.6) | (32.6) |  |  |
Outside basis difference | (41.3) | (91.6) |  |  |
Metal hedging |  | (4.0) |  |  |
Other | (0.5) | (2.1) |  |  |
Total deferred tax liabilities | (283.0) | (331.8) |  |  |
Total net deferred tax assets / (liabilities) | 167.7 | 69.0 |  |  |
Amount of capital loss carryover which was utilized | 0.9 |  |  |  |
Amount of capital loss carryover which was expired | $ 1.3 | $ 27.8 |  |  |
Related party transactions |  |  |  |  |
Percentage of ownership interest held by the parent company | 81.30% | 80.90% | 81.30% | 80.00% | 100.00%

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