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Earnings Per Share (Unaudited) | 6 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Earnings Per Share | EARNINGS PER SHARE FCX’s basic net income per share of common stock was calculated by dividing net income attributable to FCX common stockholders by the weighted-average shares of common stock outstanding during the period. Following is a reconciliation of net income and weighted-average shares of common stock outstanding for purposes of calculating diluted net income per share (in millions, except per share amounts):
| Three Months Ended |  | Six Months Ended |
| June 30, |  | June 30, |
| 2013 |  | 2012 |  | 2013 |  | 2012 |
Net income | $ | 610 |  |  | $ | 894 |  |  | $ | 1,434 |  |  | $ | 1,895 |  |
Net income attributable to noncontrolling interests | (125 | ) |  | (184 | ) |  | (301 | ) |  | (421 | ) |
Preferred dividends on redeemable noncontrolling interest | $ | (3 | ) |  | $ | — |  |  | $ | (3 | ) |  | $ | — |  |
Net income attributable to FCX common stockholders | $ | 482 |  |  | $ | 710 |  |  | $ | 1,130 |  |  | $ | 1,474 |  |
Weighted-average shares of common stock outstanding | 980 |  |  | 949 |  |  | 965 |  |  | 949 |  |
Add shares issuable upon exercise or vesting of |  |  |  |  |  |  |  |
dilutive stock options and restricted stock units | 4 |  |  | 4 |  |  | 3 |  |  | 5 |  | a
Weighted-average shares of common stock outstanding |  |  |  |  |  |  |  |
for purposes of calculating diluted net income per share | 984 |  |  | 953 |  |  | 968 |  |  | 954 |  |
Diluted net income per share attributable to FCX common stockholders | $ | 0.49 |  |  | $ | 0.74 |  |  | $ | 1.17 |  |  | $ | 1.55 |  |
a. | Excluded 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 based on the treasury stock method totaled approximately one million for the six months ended June 30, 2012.
Outstanding stock options with exercise prices greater than the average market price of FCX’s common stock during the period are excluded from the computation of diluted net income per share of common stock. Excluded amounts were 32 million stock options with a weighted-average exercise price of $40.53 per option for second-quarter 2013, and approximately 30 million stock options with a weighted average exercise price of $40.92 for the six months ended June 30, 2013. Stock options for approximately 25 million stock options with a weighted-average exercise price of $42.53 per option for second-quarter 2012, and stock options for approximately 17 million shares with a weighted-average exercise price of $44.73 were excluded for the six months ended June 30, 2012.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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