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Income Taxes (Unaudited) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |
U.S. operations | $ (829) | [1] | $ 149 | [2] | $ (1,664) | [1] | $ 285 | [2]
International operations | 142 |  | 179 |  | 282 |  | 400 |
Total | (687) |  | 328 |  | $ (1,382) |  | 685 |
Income Tax Expense (Benefit), Changes in Deferred Tax Liabilities and Deferred Tax Asset Valuation Allowances |  |  | $ 58 |  |  |  | $ 58 |
Consolidated effective income tax rate (percent) |  |  |  |  | 25.00% |  | 35.00% |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ (305) |  |  |  | $ (763) |  |  |
Effective Income Tax Rate, Adjusted, Percent |  |  |  |  | 38.00% |  |  |
[1] | As a result of the impairment to oil and gas properties, FCX recorded tax charges of $305 million for second-quarter 2015 and $763 million for the first six months of 2015 to establish a valuation allowance primarily against U.S. federal alternative minimum tax credits. Excluding this charge, FCX's consolidated effective income tax rate was 38 percent for the first six months of 2015.
[2] | FCX recognized a $58 million charge for deferred taxes recorded in connection with the allocation of goodwill to the sale of Eagle Ford shale assets.

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