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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2020
Accounting Policies [Abstract] |
Schedule of diluted earnings per share | Reconciliations of net income (loss) and weighted-average shares of common stock outstanding for purposes of calculating basic and diluted net income (loss) per share for the years ended December 31 follow:
| 2020 |  | 2019 |  | 2018 |
Net income (loss) from continuing operations | $ | 865 |  |  | $ | (192) |  |  | $ | 2,909 |  |
Net income from continuing operations attributable to noncontrolling interests | (266) |  |  | (50) |  |  | (292) |  |
Accumulated dividends and undistributed earnings allocated to participating securities | (3) |  |  | (3) |  |  | (4) |  |
Net income (loss) from continuing operations attributable to common stockholders | 596 |  |  | (245) |  |  | 2,613 |  |
Net income (loss) from discontinued operations | — |  |  | 3 |  |  | (15) |  |
Net income (loss) attributable to common stockholders | $ | 596 |  |  | $ | (242) |  |  | $ | 2,598 |  |
Basic weighted-average shares of common stock outstanding (millions) | 1,453 |  |  | 1,451 |  |  | 1,449 |  |
Add shares issuable upon exercise or vesting of dilutive stock options and RSUs (millions) | 8 |  |  | — |  | a | 9 |  | a
Diluted weighted-average shares of common stock outstanding (millions) | 1,461 |  |  | 1,451 |  |  | 1,458 |  |
Basic net income (loss) per share attributable to common stockholders: |  |  |  |  |  |
Continuing operations | $ | 0.41 |  |  | $ | (0.17) |  |  | $ | 1.80 |  |
Discontinued operations | — |  |  | — |  |  | (0.01) |  |
| $ | 0.41 |  |  | $ | (0.17) |  |  | $ | 1.79 |  |
Diluted net income (loss) per share attributable to common stockholders: |  |  |  |  |  |
Continuing operations | $ | 0.41 |  |  | $ | (0.17) |  |  | $ | 1.79 |  |
Discontinued operations | — |  |  | — |  |  | (0.01) |  |
| $ | 0.41 |  |  | $ | (0.17) |  |  | $ | 1.78 |  |
a.Excludes approximately 11 million shares of common stock in 2019 and 1 million in 2018 associated with outstanding stock options with exercise prices less than the average market price of FCX’s common stock and RSUs 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://fasb.org/us-gaap/role/ref/legacyRef -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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