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Consolidated Statement of Equity (Unaudited) - 6 months ended Jun. 30, 2016 - USD ($) shares in Millions, $ in Millions | Total | Total FCX Stockholders' Equity [Member] | Common Stock [Member] | Capital in Excess of Par Value [Member] | Retained Earnings (Accumulated Deficit) [Member] | Accumulated Other Comprehensive Loss [Member] | Common Stock Held in Treasury [Member] | Noncontrolling Interests [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2015 | $ 12,044 | $ 7,828 | $ 137 | $ 24,283 | $ (12,387) | $ (503) | $ (3,702) | $ 4,216
Balance (in shares) at Dec. 31, 2015 |  |  | 1,374 |  |  |  | 128 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Issuance of common stock | 798 | 798 | $ 8 | 793 | 0 | 0 | $ (3) | 0
Issuance of common stock (in shares) |  |  | 70 |  |  |  | 0 |
Exercised and issued stock-based awards | 0 | 0 | $ 0 | 0 | 0 | 0 | $ 0 | 0
Exercised and issued stock-based awards (in shares) |  |  | 3 |  |  |  | 0 |
Stock-based compensation | 33 | 33 | $ 0 | 33 | 0 | 0 | $ 0 | 0
Reserve on tax benefit for stock-based awards | (4) | (4) | 0 | (4) | 0 | 0 | 0 | 0
Tender of shares for stock-based awards | (5) | (5) | $ 0 | 0 | 0 | 0 | $ (5) | 0
Tender of shares for stock-based awards (in shares) |  |  | 0 |  |  |  | 1 |
Dividends on common stock | 1 | 1 | $ 0 | 0 | 1 | 0 | $ 0 | 0
Dividends to noncontrolling interests | (25) | 0 | 0 | 0 | 0 | 0 | 0 | (25)
Changes in noncontrolling interests | (5) | 0 | 0 | 0 | 0 | 0 | 0 | (5)
Net loss attributable to common stockholders | (4,663) | (4,663) | 0 | 0 | (4,663) | 0 | 0 | 0
Net income attributable to noncontrolling interests, including discontinued operations | 131 | 0 | 0 | 0 | 0 | 0 | 0 | 131
Other comprehensive income (loss) | 14 | 15 | 0 | 0 | 0 | 15 | 0 | (1)
Balance at Jun. 30, 2016 | $ 8,319 | $ 4,003 | $ 145 | $ 25,105 | $ (17,049) | $ (488) | $ (3,710) | $ 4,316
Balance (in shares) at Jun. 30, 2016 |  |  | 1,447 |  |  |  | 129 |

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