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Earnings per Share (Unaudited) Earnings per Share (Tables) | 3 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Reconciliation of net income (loss) and weighted-average shares of common stock outstanding | Reconciliations of net income and weighted-average shares of common stock outstanding for purposes of calculating basic and diluted net income per share follow (in millions, except per share amounts):
| Three Months Ended
| March 31,
| 2018 |  | 2017
Net income from continuing operations | $ | 828 |  |  | $ | 268 |
Net income from continuing operations attributable to noncontrolling interests | (125 | ) |  | (75 | )
Undistributed earnings allocated to participating securities | (4 | ) |  | (3 | )
Net income from continuing operations attributable to common stockholders | $ | 699 |  |  | $ | 190 |
Net (loss) income from discontinued operations | $ | (11 | ) |  | $ | 38 |
Net income from discontinued operations attributable to noncontrolling interests | — |  |  | (3 | )
Net (loss) income from discontinued operations attributable to common stockholders | $ | (11 | ) |  | $ | 35 |
Net income attributable to common stockholders | $ | 688 |  |  | $ | 225 |
Basic weighted-average shares of common stock outstanding | 1,449 |  |  | 1,446 |
Add shares issuable upon exercise or vesting of dilutive stock options and restricted stock units | 9 |  | a | 8 |
Diluted weighted-average shares of common stock outstanding | 1,458 |  |  | 1,454 |
Basic and diluted net income (loss) per share attributable to common stockholders: |  |  |
Continuing operations | $ | 0.48 |  |  | $ | 0.13 |
Discontinued operations | (0.01 | ) |  | 0.03 |
| $ | 0.47 |  |  | $ | 0.16 |
a. | Excludes approximately 4 million shares of common stock associated with outstanding stock options with exercise prices less than the average market price of FCX’s common stock 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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