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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2017
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:
 
2017
 
2016
 
2015
 
Net income (loss) from continuing operations
$
2,029

 
$
(3,832
)
 
$
(12,180
)
 
Net income from continuing operations attributable to noncontrolling interests
(274
)
 
(227
)
 
(27
)
 
Gain on redemption and preferred dividends attributable to redeemable noncontrolling interest
—

 
161

 
(41
)
 
Accumulated dividends and undistributed earnings allocated to participating securities
(4
)
 
(3
)
 
(3
)
 
Net income (loss) from continuing operations attributable to common stockholders
$
1,751

 
$
(3,901
)
 
$
(12,251
)
 
 
 
 
 
 
 
 
Net income (loss) from discontinued operations
66

 
(193
)
 
91

 
Net income from discontinued operations attributable to noncontrolling interests
(4
)
 
(63
)
 
(79
)
 
Net income (loss) from discontinued operations attributable to common stockholders
$
62

 
$
(256
)
 
$
12

 
 
 
 
 
 
 
 
Net income (loss) attributable to common stockholders
$
1,813

 
$
(4,157
)
 
$
(12,239
)
 
 
 
 
 
 
 
 
Basic weighted-average shares of common stock outstanding (millions)
1,447

 
1,318

 
1,082

 
Add shares issuable upon exercise or vesting of dilutive stock options and RSUs (millions)
7

 
—

a 
—

a 
Diluted weighted-average shares of common stock outstanding (millions)
1,454

 
1,318

 
1,082

 
 
 
 
 
 
 
 
Basic and diluted net income (loss) per share attributable to common stockholders:
 
 
 
 
 
 
Continuing operations
$
1.21

 
$
(2.96
)
 
$
(11.32
)
 
Discontinued operations
0.04

 
(0.20
)
 
0.01

 
 
$
1.25

 
$
(3.16
)
 
$
(11.31
)
 

a.
Excludes approximately 12 million in 2016 and 9 million in 2015 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.