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STOCKHOLDERS' EQUITY AND STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2016
Stockholders' Equity Note [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | A summary of changes in the balances of each component of accumulated other comprehensive loss, net of tax, follows:
| Defined Benefit Plans |  | Unrealized Losses on Securities |  | Translation Adjustment |  | Total
Balance at January 1, 2014 | $ | (410 | ) |  | $ | (5 | ) |  | $ | 10 |  |  | $ | (405 | )
Amounts arising during the perioda,b | (162 | ) |  | (1 | ) |  | — |  |  | (163 | )
Amounts reclassifiedc | 24 |  |  | — |  |  | — |  |  | 24 |
Balance at December 31, 2014 | (548 | ) |  | (6 | ) |  | 10 |  |  | (544 | )
Amounts arising during the perioda,b | 3 |  |  | — |  |  | — |  |  | 3 |
Amounts reclassifiedc | 38 |  |  | — |  |  | — |  |  | 38 |
Balance at December 31, 2015 | (507 | ) |  | (6 | ) |  | 10 |  |  | (503 | )
Amounts arising during the perioda,b | (91 | ) |  | 2 |  |  | — |  |  | (89 | )
Amounts reclassifiedc | 44 |  |  | — |  |  | — |  |  | 44 |
Balance at December 31, 2016 | $ | (554 | ) |  | $ | (4 | ) |  | $ | 10 |  |  | $ | (548 | )
a. | Includes net actuarial losses, net of noncontrolling interest, totaling $252 million for 2014, $7 million for 2015 and $79 million for 2016.
b. | Includes tax benefits (provision) totaling $89 million for 2014, $2 million for 2015 and $(11) million for 2016.
c. | Includes amortization primarily related to actuarial losses, net of taxes, of $14 million for 2014, $16 million for 2015 and $4 million for 2016.
Compensation costs charged against earnings | Compensation cost charged against earnings for stock-based awards for the years ended December 31 follows:
|  | 2016 |  | 2015 |  | 2014
Selling, general and administrative expenses |  | $ | 69 |  |  | $ | 67 |  |  | $ | 79 |
Production and delivery |  | 16 |  |  | 17 |  |  | 26 |
Capitalized costs |  | 4 |  |  | 11 |  |  | 23 |
Total stock-based compensation |  | 89 |  |  | 95 |  |  | 128 |
Less capitalized costs |  | (4 | ) |  | (11 | ) |  | (23 | )
Tax benefit and noncontrolling interests' share |  | (3 | ) | a | (31 | ) |  | (41 | )
Impact on net loss from continuing operations |  | $ | 82 |  |  | $ | 53 |  |  | $ | 64 |
a. Charges in the U.S. are not currently expected to generate a future tax benefit.
Summary of stock options and SARs outstanding and changes during the period | A summary of options and SARs outstanding as of December 31, 2016, including 1,034,153 SARs, and activity during the year ended December 31, 2016, follows:
| Number of Options and SARs |  | Weighted- Average Exercise Price Per Share |  | Weighted- Average Remaining Contractual Term (years) |  | Aggregate Intrinsic Value |
Balance at January 1 | 49,303,879 |  |  | $ | 34.10 |  |  |  |  |  |
Granted | 7,167,000 |  |  | 4.35 |  |  |  |  |  |
Exercised | (14,750 | ) |  | 12.12 |  |  |  |  |  |
Expired/Forfeited | (2,661,894 | ) |  | 31.80 |  |  |  |  |  |
Balance at December 31 | 53,794,235 |  |  | 30.25 |  |  | 4.6 |  | $ | 66 |  |
Vested and exercisable at December 31 | 44,314,195 |  |  | 34.20 |  |  | 3.8 |  | $ | 14 |  |
Weighted average assumptions used to value stock option awards | Information related to stock options during the years ended December 31 follows:
| 2016 |  | 2015 |  | 2014
Weighted-average assumptions used to value stock option awards: |  |  |  |  |
Expected volatility | 71.6 | % |  | 37.9 | % |  | 36.6 | %
Expected life of options (in years) | 5.34 |  |  | 5.17 |  |  | 4.92 |
Expected dividend rate | — |  |  | 4.5 | % |  | 3.5 | %
Risk-free interest rate | 1.3 | % |  | 1.7 | % |  | 1.7 | %
Weighted-average grant-date fair value (per share) | $ | 2.64 |  |  | $ | 4.30 |  |  | $ | 7.43 |
Intrinsic value of options exercised | $ | — |  | a | $ | 1 |  |  | $ | 17 |
Fair value of options vested | $ | 43 |  |  | $ | 50 |  |  | $ | 76 |
a. Rounds to less than $1 million.
Summary Of Outstanding Stock-settled RSUs and PSUs | A summary of outstanding stock-settled RSUs and PSUs as of December 31, 2016, and activity during the year ended December 31, 2016, follows:
| Number of Awards |  | Weighted-Average Grant-Date Fair Value Per Award |  | Aggregate Intrinsic Value
Balance at January 1 | 7,220,300 |  |  | $ | 27.12 |  |  |
Granted | 3,557,366 |  | a | 10.46 |  |  |
Vested | (3,042,860 | ) |  | 28.81 |  |  |
Forfeited | (516,579 | ) |  | 25.91 |  |  |
Balance at December 31 | 7,218,227 |  |  | 18.08 |  |  | $ | 95 |
a. Excludes 993 thousand PSUs granted in 2016 for which the performance metrics have not yet been established.
Summary of Outstanding Cash-Settled RSUs and PSUs | A summary of outstanding cash-settled RSUs and PSUs as of December 31, 2016, and activity during the year ended December 31, 2016, follows:
| Number of Awards |  | Weighted-Average Grant-Date Fair Value Per Award |  | Aggregate Intrinsic Value
Balance at January 1 | 4,612,536 |  |  | $ | 24.89 |  |  |
Granted | 676,000 |  |  | 6.05 |  |  |
Vested | (2,148,558 | ) |  | 25.83 |  |  |
Forfeited | (608,234 | ) |  | 23.92 |  |  |
Balance at December 31 | 2,531,744 |  |  | 19.30 |  |  | $ | 33 |
Schedule of amounts related to exercises of stock options and stock appreciation rights and the vesting of restricted stock units and restricted stock awards | The following table includes amounts related to exercises of stock options and vesting of RSUs during the years ended December 31:
| 2016 |  | 2015 |  | 2014
FCX shares tendered to pay the exercise price |  |  |  |  |
and/or the minimum required taxesa | 906,120 |  |  | 349,122 |  |  | 474,480 |
Cash received from stock option exercises | $ | — |  | b | $ | 3 |  |  | $ | 12 |
Actual tax benefit realized for tax deductions | $ | — |  | b | $ | 11 |  |  | $ | 16 |
Amounts FCX paid for employee taxes | $ | 6 |  |  | $ | 7 |  |  | $ | 8 |
a. | Under terms of the related plans, upon exercise of stock options and vesting of RSUs, employees may tender FCX shares to pay the exercise price and/or the minimum required taxes.
b. | Rounds to less than $1 million.

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