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CONTINGENCIES Royalty Dispute (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2014 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Loss Contingencies [Line Items] |  |  |  |
Production and delivery |  | $ 10,300,000,000 | $ 10,697,000,000 | $ 10,693,000,000
Interest expense, net |  | (801,000,000) | (755,000,000) | (617,000,000)
Provision for (benefit from) income taxes |  | 883,000,000 | 371,000,000 | (1,951,000,000)
Net loss attributable to noncontrolling interests |  | 274,000,000 | 227,000,000 | 27,000,000
Payments for Legal Settlements |  | 53,000,000 | $ 30,000,000 | $ 34,000,000
Cerro Verde Royalty Dispute | Judicial Ruling | Royalty Assessments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Loss in Period |  | 244,000,000 |  |
Cerro Verde Royalty Dispute | Judicial Ruling | Unfavorable Regulatory Actions |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Loss in Period, Including Tax Charges |  | 355,000,000 |  |
Loss Contingency, Loss In Period, Attributable To Parent |  | 186,000,000 |  |
Cerro Verde Royalty Dispute | Judicial Ruling | Royalty Assessments, Penalties And Interests |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Loss in Period |  | 151,000,000 |  |
Cerro Verde Royalty Dispute | Judicial Ruling | Royalty Assessments, Taxes |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Loss in Period |  | 89,000,000 |  |
January 2012 to December 2013 | Royalty Assessments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Loss in Period |  | 0 |  |
October 2011 to 2013 | Royalty Assessments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Loss in Period |  | 348,000,000 |  |
Tax Year 2006 To Tax Year 2008 | Cerro Verde Royalty Dispute | Judicial Ruling | Royalty Assessments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Payments for Legal Settlements |  | 142,000,000 |  |
Tax Year 2009 to Tax Year 2013 [Member] | Cerro Verde Royalty Dispute | Pending Litigation [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Estimate of Possible Loss |  | 385,000,000 |  |
Cerro Verde |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Stability Agreement, Term | 15 years |  |  |
Cerro Verde | Cerro Verde Royalty Dispute | Royalty Assessments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Production and delivery |  | 203,000,000 |  |
Interest expense, net |  | (145,000,000) |  |
Provision for (benefit from) income taxes |  | 7,000,000 |  |
Net loss attributable to noncontrolling interests |  | (169,000,000) |  |
Cerro Verde | Cerro Verde Royalty Dispute | Royalty Assessments, Taxes |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Production and delivery |  | 22,000,000 |  |
Provision for (benefit from) income taxes |  | 67,000,000 |  |
Cerro Verde | Cerro Verde Royalty Dispute | Judicial Ruling | Royalty Assessments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Loss in Period |  | 348,000,000 |  |
Cerro Verde | December 2006 to Tax Year 2013 | Cerro Verde Royalty Dispute | Royalty Assessments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Provision for (benefit from) income taxes |  | (129,000,000) |  |
Cerro Verde | October 2011 to 2013 | Cerro Verde Royalty Dispute | Royalty Assessments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Provision for (benefit from) income taxes |  | 136,000,000 |  |
Cerro Verde | October 2011 to 2013 | Cerro Verde Royalty Dispute | Disputed Royalty Assessmentss |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Provision for (benefit from) income taxes |  | 69,000,000 |  |
Cerro Verde | December 2006 To September 2011 | Cerro Verde Royalty Dispute | Royalty Assessments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Production and delivery |  | 175,000,000 |  |
Cerro Verde | Tax Year 2006 To Tax Year 2008 | Cerro Verde Royalty Dispute | Royalty Assessments, Penalties |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Production and delivery |  | 6,000,000 |  |
FCX Issuer | Tax Year 2009 to Tax Year 2013 [Member] | Cerro Verde Royalty Dispute | Pending Litigation [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Estimate of Possible Loss |  | $ 206,000,000 |  |

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