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Income Taxes (Unaudited) (Tables) | 9 Months Ended
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Sep. 30, 2017
Income Tax Disclosure [Abstract] |
Income before income taxes and equity in an affiliated companies' net earnings | Geographic sources of FCX’s (provision for) benefit from income taxes follow (in millions):
| Three Months Ended |  | Nine Months Ended |
| September 30, |  | September 30, |
| 2017 |  | 2016 |  | 2017 |  | 2016 |
U.S. operations a | $ | 2 |  |  | $ | 331 |  |  | $ | 24 |  |  | $ | 293 |  |
International operations | (389 | ) | b | (217 | ) |  | (771 | ) | b | (372 | ) |
Total | $ | (387 | ) |  | $ | 114 |  |  | $ | (747 | ) |  | $ | (79 | ) |
a. | Includes net tax (charges) credits of $(10) million for third-quarter 2017 and $21 million for the first nine months of 2017 associated with alternative minimum tax credit carryforwards. The third quarter and first nine months of 2016 include net tax credits of $332 million and $290 million, respectively, associated with alternative minimum tax credits, changes to valuation allowances and net operating loss carryback claims.
b. | Includes net charges of $2 million associated with the Cerro Verde mining royalties dispute, consisting of tax charges of $127 million for disputed royalties and other related mining taxes for the period October 2011 through the year 2013 (when royalties were determined based on operating income), mostly offset by a tax benefit of $125 million associated with disputed royalties and other related mining taxes for the period December 2006 through the year 2013.

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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=84230637&loc=d3e32639-109319 + Details
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