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Income Taxes (Unaudited) (Tables) | 9 Months Ended
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Sep. 30, 2015
Income Tax Disclosure [Abstract] |
Geographic Sources of Provision for Income Taxes | Geographic sources of FCX's benefit from (provision for) income taxes follow (in millions):
| Three Months Ended |  | Nine Months Ended |
| September 30, |  | September 30, |
| 2015 |  | 2014 |  | 2015 |  | 2014 |
U.S. operations | $ | 309 |  | a | $ | (38 | ) |  | $ | 2,020 |  | a | $ | (323 | ) | b
International operations | 51 |  |  | (311 | ) | c | (278 | ) |  | (711 | ) | c
Total | $ | 360 |  |  | $ | (349 | ) |  | $ | 1,742 |  |  | $ | (1,034 | ) |
a. | As a result of the impairment to U.S. oil and gas properties, FCX recorded tax charges of $1.2 billion for third-quarter 2015 and $2.0 billion for the first nine months of 2015 to establish a valuation allowance primarily against U.S. federal alternative minimum tax credits and foreign tax credits, partly offset by a tax benefit of $56 million related to the impairment of the Morocco oil and gas properties. Excluding these charges, FCX's consolidated effective income tax rate was 38 percent for the first nine months of 2015.
b. | FCX recognized a $62 million charge for deferred taxes recorded in connection with the allocation of goodwill to the sale of Eagle Ford shale assets.
c. | Included a $54 million charge related to changes in Chilean tax rules.

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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