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STOCKHOLDERS' EQUITY AND STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2017
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, 2015 | $ | (548 | ) |  | $ | (6 | ) |  | $ | 10 |  |  | $ | (544 | )
Amounts arising during the period a,b | 3 |  |  | — |  |  | — |  |  | 3 |
Amounts reclassified c | 38 |  |  | — |  |  | — |  |  | 38 |
Balance at December 31, 2015 | (507 | ) |  | (6 | ) |  | 10 |  |  | (503 | )
Amounts arising during the period a,b | (91 | ) |  | 2 |  |  | — |  |  | (89 | )
Amounts reclassified c | 44 |  |  | — |  |  | — |  |  | 44 |
Balance at December 31, 2016 | (554 | ) |  | (4 | ) |  | 10 |  |  | (548 | )
Amounts arising during the period a,b | 7 |  |  | 1 |  |  | — |  |  | 8 |
Amounts reclassified c | 53 |  |  | — |  |  | — |  |  | 53 |
Balance at December 31, 2017 | $ | (494 | ) |  | $ | (3 | ) |  | $ | 10 |  |  | $ | (487 | )
a. | Includes net actuarial (losses) gains, net of noncontrolling interest, totaling $(7) million for 2015, $(79) million for 2016 and $52 million for 2017.
b. | Includes tax benefits (provision) totaling $2 million for 2015, $(11) million for 2016 and $(45) million for 2017.
c. | Includes amortization primarily related to actuarial losses, net of taxes of $16 million for 2015, $4 million for 2016 and $5 million for 2017.
Compensation costs charged against earnings | Compensation cost charged against earnings for stock-based awards for the years ended December 31 follows:
|  | 2017 |  | 2016 |  | 2015
Selling, general and administrative expenses |  | $ | 55 |  |  | $ | 69 |  |  | $ | 67 |
Production and delivery |  | 16 |  |  | 16 |  |  | 17 |
Capitalized costs |  | — |  |  | 4 |  |  | 11 |
Total stock-based compensation |  | 71 |  |  | 89 |  |  | 95 |
Less capitalized costs |  | — |  |  | (4 | ) |  | (11 | )
Tax benefit and noncontrolling interests’ share |  | (4 | ) | a | (3 | ) | a | (31 | )
Impact on net income (loss) from continuing operations |  | $ | 67 |  |  | $ | 82 |  |  | $ | 53 |
a. Charges in the U.S. are not 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, 2017, including 716,469 SARs, and activity during the year ended December 31, 2017, 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 | 53,794,235 |  |  | $ | 30.25 |  |  |  |  |  |
Granted | 3,861,000 |  |  | 15.52 |  |  |  |  |  |
Exercised | (647,941 | ) |  | 7.64 |  |  |  |  |  |
Expired/Forfeited | (8,992,606 | ) |  | 34.24 |  |  |  |  |  |
Balance at December 31 | 48,014,688 |  |  | 28.63 |  |  | 4.8 |  | $ | 129 |  |
Vested and exercisable at December 31 | 39,725,053 |  |  | 32.26 |  |  | 4.0 |  | $ | 62 |  |
Weighted average assumptions used to value stock option awards | Information related to stock options during the years ended December 31 follows:
| 2017 |  | 2016 |  | 2015
Weighted-average assumptions used to value stock option awards: |  |  |  |  |
Expected volatility | 51.4 | % |  | 71.6 | % |  | 37.9 | %
Expected life of options (in years) | 5.70 |  |  | 5.34 |  |  | 5.17 |
Expected dividend rate | — |  |  | — |  |  | 4.5 | %
Risk-free interest rate | 2.0 | % |  | 1.3 | % |  | 1.7 | %
Weighted-average grant-date fair value (per share) | $ | 7.61 |  |  | $ | 2.64 |  |  | $ | 4.30 |
Intrinsic value of options exercised | $ | 5 |  |  | $ | — |  | a | $ | 1 |
Fair value of options vested | $ | 25 |  |  | $ | 43 |  |  | $ | 50 |
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, 2017, and activity during the year ended December 31, 2017, follows:
| Number of Awards |  | Weighted-Average Grant-Date Fair Value Per Award |  | Aggregate Intrinsic Value
Balance at January 1 | 7,218,227 |  |  | $ | 18.08 |  |  |
Granted | 2,062,067 |  | a | 15.37 |  |  |
Vested | (3,175,437 | ) |  | 15.45 |  |  |
Forfeited | (554,233 | ) |  | 11.23 |  |  |
Balance at December 31 | 5,550,624 |  |  | 19.27 |  |  | $ | 105 |
a. Excludes 374 thousand PSUs related to 2017 grants and 497 thousand PSUs related to 2016 grants 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, 2017, and activity during the year ended December 31, 2017, follows:
| Number of Awards |  | Weighted-Average Grant-Date Fair Value Per Award |  | Aggregate Intrinsic Value
Balance at January 1 | 2,531,744 |  |  | $ | 19.30 |  |  |
Granted | 622,907 |  |  | 15.26 |  |  |
Vested | (1,796,288 | ) |  | 22.43 |  |  |
Forfeited | (51,128 | ) |  | 12.96 |  |  |
Balance at December 31 | 1,307,235 |  |  | 13.32 |  |  | $ | 25 |
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:
| 2017 |  | 2016 |  | 2015
FCX shares tendered to pay the exercise price |  |  |  |  |
and/or the minimum required taxes a | 1,041,937 |  |  | 906,120 |  |  | 349,122 |
Cash received from stock option exercises | $ | 5 |  |  | $ | — |  | b | $ | 3 |
Actual tax benefit realized for tax deductions | $ | 1 |  |  | $ | — |  | b | $ | 11 |
Amounts FCX paid for employee taxes | $ | 15 |  |  | $ | 6 |  |  | $ | 7 |
a. | Under terms of the related plans, upon exercise of stock options and vesting of stock-settled 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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