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Earnings per Share (Unaudited) Earnings per Share (Tables)
3 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]  
Reconciliation of net income (loss) and weighted-average shares of common stock outstanding
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 follow (in millions, except per share amounts):
Three Months Ended
March 31,
 20212020
Net income (loss)$953 $(549)
Net (income) loss attributable to noncontrolling interests(235)58 
Undistributed earnings allocated to participating securities(4)(3)
Net income (loss) attributable to common stockholders$714 $(494)
Basic weighted-average shares of common stock outstanding
1,462 1,452 
Add shares issuable upon exercise or vesting of dilutive stock options and restricted stock units (RSUs)15 — a
Diluted weighted-average shares of common stock outstanding
1,477 1,452 
Basic net income (loss) per share attributable to common stockholders:$0.49 $(0.34)
Diluted net income (loss) per share attributable to common stockholders:$0.48 $(0.34)
a.Excludes approximately 10 million shares 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.