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Earnings Per Share (Unaudited) (Tables)
6 Months Ended
Jun. 30, 2012
Earnings Per Share [Abstract]  
Reconciliation of net income and weighted-average shares of common stock outstanding
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,
 
 
2012
 
2011
 
2012
 
2011
 
Net income
$
894

 
$
1,726

 
$
1,895

 
$
3,587

 
Net income attributable to noncontrolling interests
(184
)
 
(358
)
 
(421
)
 
(720
)
 
Net income attributable to FCX common stockholders
$
710

 
$
1,368

 
$
1,474

 
$
2,867

 
 
 
 
 
 
 
 
 
 
Weighted-average shares of common stock outstanding
949

 
947

 
949

 
947

 
Add shares issuable upon exercise or vesting of:
 
 
 
 
 
 
 
 
 Dilutive stock options
3

 
8

 
4

a 
8

 
 Restricted stock units
1

 
1

 
1

 
1

 
Weighted-average shares of common stock outstanding
 
 
 
 
 
 
 
 
 for purposes of calculating diluted net income per share
953

 
956

 
954

 
956

 
 
 
 
 
 
 
 
 
 
Diluted net income per share attributable to FCX
     common stockholders
$
0.74

 
$
1.43

 
$
1.55

 
$
3.00

 
a.
Excluded approximately one million shares of common stock with exercise prices less than the average market price of FCX's common stock during the period that were anti-dilutive based on the treasury stock method.