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Earnings per Share (Unaudited) Earnings per Share (Tables)
 3 Months Ended
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.