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Earnings Per Share (Unaudited) (Tables) | 3 Months Ended
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Mar. 31, 2015
Earnings Per Share [Abstract] |
Reconciliation of net income and weighted-average shares of common stock outstanding | A reconciliation of net (loss) income and weighted-average shares of common stock outstanding for purposes of calculating basic and diluted net (loss) income per share for the three months ended March 31 follows (in millions, except per share amounts):
| Three Months Ended |
| March 31, |
| 2015 |  | 2014 |
Net (loss) income | $ | (2,406 | ) |  | $ | 626 |  |
Net income attributable to noncontrolling interests | (58 | ) |  | (106 | ) |
Preferred dividends on redeemable noncontrolling interest | (10 | ) |  | (10 | ) |
Undistributed earnings allocable to participating securities | (3 | ) |  | (1 | ) |
Net (loss) income allocable to common stockholders | $ | (2,477 | ) |  | $ | 509 |  |
Basic weighted-average shares of common stock outstanding | 1,040 |  |  | 1,038 |  |
Add shares issuable upon exercise or vesting of dilutive stock options and RSUs | — |  | a | 6 |  | a
Diluted weighted-average shares of common stock outstanding | 1,040 |  |  | 1,044 |  |
Basic net (loss) income per share attributable to common stockholders | $ | (2.38 | ) |  | $ | 0.49 |  |
Diluted net (loss) income per share attributable to common stockholders | $ | (2.38 | ) |  | $ | 0.49 |  |
a. | Excludes shares of common stock totaling approximately three million for first-quarter 2015 and two million for first-quarter 2014 associated with outstanding stock options with exercise prices less than the average market price of FCX's common stock and RSU's that were anti-dilutive.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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