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Debt (Tables) | 3 Months Ended
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Mar. 31, 2017
Debt Instrument, Redemption [Line Items] |
Schedule of Debt [Table Text Block] | DEBT The components of debt follow (in millions):
|  | March 31, 2017 |  | December 31, 2016
Senior notes and debentures: |  |  |  |
Issued by FCX |  | $ | 13,242 |  |  | $ | 13,745 |
Issued by Freeport-McMoRan Oil & Gas LLC (FM O&G LLC) |  | 267 |  |  | 267 |
Issued by FMC |  | 358 |  |  | 359 |
Cerro Verde credit facility |  | 1,267 |  |  | 1,390 |
Cerro Verde shareholder loans |  | 224 |  |  | 261 |
Other |  | 5 |  |  | 5 |
Total debt a |  | 15,363 |  |  | 16,027 |
Less current portion of debt |  | (2,228 | ) |  | (1,232 | )
Long-term debt |  | $ | 13,135 |  |  | $ | 14,795 |
a. | Includes additions for unamortized fair value adjustments totaling $171 million at March 31, 2017 ($179 million at December 31, 2016), and is net of reductions for unamortized net discounts and unamortized debt issuance costs totaling $95 million at March 31, 2017 ($100 million at December 31, 2016).

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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