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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Earnings Per Share) (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Summary of Significant Accounting Policies [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | $ 959 | [1] | $ 1,048 |  | $ 610 | [1] | $ 824 |  | $ 945 |  | $ 1,140 | [2] | $ 894 | $ 1,001 |  | $ 3,441 | [1] | $ 3,980 | [2] | $ 5,747 |
Net income attributable to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (761) |  | (939) |  | (1,187) |
Preferred dividends on redeemable noncontrolling interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (22) |  | 0 |  | 0 |
Net income attributable to FCX common stockholders | $ 707 | [1],[3],[4],[5],[6] | $ 821 | [4],[5] | $ 482 | [1],[3],[4],[5],[7] | $ 648 | [3],[4] | $ 743 | [8],[9] | $ 824 | [2] | $ 710 | $ 764 | [10] | $ 2,658 | [1],[3],[4],[5],[6],[7] | $ 3,041 | [10],[2],[8],[9] | $ 4,560 |
Weighted-average shares of common stock outstanding (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,002,000,000 |  | 949,000,000 |  | 947,000,000 |
Add shares issuable upon exercise or vesting of dilutive stock options and restricted stock units (millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000 | [11] | 5,000,000 | [11] | 8,000,000 | [11]
Weighted-average shares of common stock outstanding for purposes of calculating diluted net income per share (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,006,000,000 |  | 954,000,000 |  | 955,000,000 |
Diluted net income per share attributable to FCX common stockholders (in dollars per share) | $ 0.68 | [1],[3],[4],[5],[6] | $ 0.79 | [4],[5] | $ 0.49 | [1],[3],[4],[5],[7] | $ 0.68 | [3],[4] | $ 0.78 | [8],[9] | $ 0.86 | [2] | $ 0.74 | $ 0.80 | [10] | $ 2.64 | [1],[3],[4],[5],[6],[7] | $ 3.19 | [10],[2],[8],[9] | $ 4.78 |
Potential anti-dilutive additional shares of common stock from stock options and restricted stock units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  | 1,000,000 |  | 2,000,000 |
Outstanding stock options with exercise prices greater than average market price of common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,000,000 |  | 17,000,000 |  | 4,000,000 |
Weighted-average exercise price of stock options excluded (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 40.23 |  | $ 44.73 |  | $ 53.91 |
[1] | Included a net tax benefit of $183 million ($0.19 per share) in the second quarter, $16 million ($0.01 per share) in the fourth quarter and $199 million ($0.20 per share) for the year associated with net reductions in FCX's deferred tax liabilities and deferred tax asset valuation allowances related to the acquisitions of PXP and MMR.
[2] | Included a net tax benefit of $208 million ($108 million attributable to noncontrolling interests and $100 million to net income attributable to FCX common stockholders or $0.11 per share) in the third quarter and $205 million ($107 million attributable to noncontrolling interests and $98 million to net income attributable to FCX common stockholders or $0.11 per share) for the year associated with adjustments to Cerro Verde's deferred income taxes. Refer to Note 11 for further discussion.
[3] | Included net losses (gains) on early extinguishment of debt totaling $40 million ($0.04 per share) in the first quarter, $(5) million ($(0.01) per share) in the second quarter for an adjustment related to taxes on the first quarter losses, $(7) million ($(0.01) per share) in the fourth quarter and $28 million ($0.03 per share) for the year. Refer to Note 8 for further discussion.
[4] | Included charges of $14 million ($10 million to net income attributable to FCX common stockholders or $0.01 per share) in the first quarter, $61 million ($36 million to net income attributable to FCX common stockholders or $0.04 per share) in the second quarter, $1 million ($1 million to net income attributable to FCX common stockholders) in the third quarter, $4 million ($3 million to net income attributable to FCX common stockholders) in the fourth quarter and $80 million ($50 million to net income attributable to FCX common stockholders or $0.05 per share) for the year for transaction and related costs principally associated with the acquisitions of PXP and MMR.
[5] | Included charges of $36 million ($23 million to net income attributable to FCX common stockholders or $0.02 per share) in the second quarter, $158 million ($98 million to net income attributable to FCX common stockholders or $0.09 per share) in the third quarter, $118 million ($73 million to net income attributable to FCX common stockholders or $0.07 per share) in the fourth quarter and $312 million ($194 million to net income attributable to FCX common stockholders or $0.19 per share) for the year 2013 (reflecting the seven-month period from June 1, 2013, to December 31, 2013) for net unrealized and noncash realized losses on crude oil and natural gas derivative contracts.
[6] | Included charges in the fourth quarter and for the year of (i) $76 million ($49 million to net income attributable to FCX common stockholders or $0.05 per share) associated with updated mine plans at Morenci that resulted in a loss in recoverable copper in leach stockpiles, (ii) $37 million ($23 million to net income attributable to FCX common stockholders or $0.02 per share) associated with the restructuring of an executive employment arrangement and (iii) $36 million ($13 million to net income attributable to FCX common stockholders or $0.01 per share) associated with a new labor agreement at Cerro Verde.
[7] | Included a gain of $128 million ($0.13 per share) in the second quarter and for the year primarily related to FCX's preferred stock investment in and the subsequent acquisition of MMR.
[8] | Included a gain of $59 million ($31 million to net income attributable to FCX common stockholders or $0.03 per share) in the fourth quarter and for the year for the settlement of the insurance claim for business interruption and property damage relating to the 2011 incidents affecting PT-FI's concentrate pipelines. Refer to Note 12 for further discussion.
[9] | Included a charge of $16 million ($8 million to net income attributable to FCX common stockholders or $0.01 per share) in the fourth quarter and for the year associated with a labor agreement at Candelaria. Also included charges of $9 million ($7 million to net income attributable to FCX common stockholders or $0.01 per share) for costs associated with the PXP and MMR transactions.
[10] | Included losses on early extinguishment of debt totaling $149 million ($0.16 per share) in the first quarter and for the year. Refer to Note 8 for further discussion.
[11] | Excluded 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 based on the treasury stock method totaled approximately one million for the years ended December 31, 2013 and 2012, and two million for the year ended December 31, 2011.

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