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INCOME TAXES (Narrative) (Details) - USD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 01, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Total income taxes paid to all jurisdictions |  | $ 203 | $ 893 | $ 1,500 |
Tax refunds received from all jurisdictions |  | 247 | 334 | $ 257 |
Foreign tax credits |  | 2,094 | 1,552 |  |
Minimum tax credits |  | 444 | 569 |  |
Valuation allowances |  | 6,058 | 4,183 |  |
Tax Credit Carryforward, Amount |  | 72 |  |  |
Net provision associated with an increase in the beginning of the year valuation allowance |  | $ (1,900) | $ (1,200) |  |
U.S. federal statutory tax rate |  | 35.00% | 35.00% | 35.00% |
Interest on income taxes accrued |  | $ 19 | $ 16 | $ 15 |
Unrecognized tax benefits |  | 101 | 110 | 104 | $ 110
Unrecognized tax benefits that would impact the effective tax rate |  | 95 |  |  |
Unrecognized tax benefits that would impact the effective tax rate, net of tax benefits |  | 68 |  |  |
Valuation allowance for operating loss carryforwards |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Valuation allowances |  | 2,900 |  |  |
Foreign Tax Credits |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Valuation allowances |  | 2,100 |  |  |
Impairment To Oil And Gas Properties |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Valuation allowances |  | 1,600 | 3,300 |  |
Net provision associated with an increase in the beginning of the year valuation allowance |  | (1,600) |  |  |
Discontinued Operations |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Total income taxes paid to all jurisdictions |  | $ 27 | $ 187 | $ 11 |
SUNAT | Cerro Verde |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Foreign income tax rate under new stability agreement |  | 32.00% |  |  |
Foreign Tax Authority |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Foreign tax credits |  | $ 1,900 |  |  |
Foreign Tax Authority | Chili - Service of Internal Taxes |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
U.S. federal statutory tax rate |  | 35.00% |  |  |
Foreign Tax Authority | Chili - Service of Internal Taxes | Tax Years 2013 to 2017 |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Mining royalty tax rate |  | 4.00% |  |  |
Foreign Tax Authority | Chili - Service of Internal Taxes | Tax Years 2018 to 2023 | Minimum |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Mining royalty tax rate |  | 5.00% |  |  |
Foreign Tax Authority | Chili - Service of Internal Taxes | Tax Years 2018 to 2023 | Maximum |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Mining royalty tax rate |  | 14.00% |  |  |
Foreign Tax Authority | Chili - Service of Internal Taxes | 2020 and thereafter |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
U.S. federal statutory tax rate |  | 44.50% |  |  |
Foreign Tax Authority | SUNAT | 2014 |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
U.S. federal statutory tax rate |  | 30.00% |  |  |
Dividend tax rate |  | 4.10% |  |  |
Foreign Tax Authority | SUNAT | 2019 and thereafter |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
U.S. federal statutory tax rate |  | 26.00% |  |  |
Dividend tax rate |  | 9.30% |  |  |
Foreign Tax Authority | SUNAT | Tax Year 2017 [Member] |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Dividend tax rate | 5.00% |  |  |  |
Corporate Income Tax Rate | 29.50% |  |  |  |
Domestic Tax Authority |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Valuation allowances |  | $ 574 |  |  |
Domestic Tax Authority | Minimum Tax Credit Carryforwards |  |  |  |  |
Schedule Of Income Taxes [Line Items] |  |  |  |  |
Valuation allowances |  | $ 371 |  |  |

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