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FINANCIAL INSTRUMENTS (Unsettled Derivatives) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |  |  |
Paid to brokers associated with margin requirements | $ 1 |  | $ 7 |
Derivative Asset | 59 |  | 33 |
Derivative Liability | 320 |  | 20 |
Trade accounts receivable [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative Asset | 53 |  | 24 |
Derivative Liability | 0 |  | 9 |
Other current assets [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative Asset | 6 |  | 5 |
Derivative Liability | 0 |  | 0 |
Accounts payable and accrued liabilities [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative Asset | 0 |  | 4 |
Derivative Liability | 205 |  | 11 |
Other Liabilities [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative Asset | 0 |  | 0 |
Derivative Liability | 115 |  | 0 |
Commodity Contract [Member] | Designated as Hedging Instrument [Member] | Copper Futures and Swap Contracts [Member] | Other current assets [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Asset position | 6 | [1] | 5 | [1]
Commodity Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Asset position | 69 |  | 41 |
Liability position | 330 |  | 28 |
Derivative Asset, Fair Value, Gross Liability | 10 |  | 8 |
Derivative Liability, Fair Value, Gross Asset | 10 |  | 8 |
Derivative Asset | 59 |  | 33 |
Derivative Liability | 320 |  | 20 |
Commodity Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Natural Gas Swaps [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Liability position | 4 |  | 0 |
Commodity Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Copper Futures and Swap Contracts [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Liability position | 0 | [1] | 1 | [1]
Commodity Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Embedded derivatives in provisional sales purchases contracts [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Asset position | 63 |  | 36 |
Liability position | 16 |  | 27 |
Derivative Asset, Fair Value, Gross Liability | 10 |  | 8 |
Derivative Liability, Fair Value, Gross Asset | 10 |  | 8 |
Derivative Asset | 53 |  | 28 |
Derivative Liability | 6 |  | 19 |
Commodity Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Crude Oil Options [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Liability position | 309 | [2] | 0 | [2]
Commodity Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Copper Forward Contracts [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Liability position | 1 |  | 0 |
Commodity Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Crude Oil and Natural Gas Derivatives [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Asset position | 0 |  | 0 |
Liability position | 313 |  | 0 |
Derivative Asset, Fair Value, Gross Liability | 0 |  | 0 |
Derivative Liability, Fair Value, Gross Asset | 0 |  | 0 |
Derivative Asset | 0 |  | 0 |
Derivative Liability | 313 |  | 0 |
Commodity Contract [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Copper Derivatives [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Asset position | 6 |  | 5 |
Liability position | 1 |  | 1 |
Derivative Asset, Fair Value, Gross Liability | 0 |  | 0 |
Derivative Liability, Fair Value, Gross Asset | 0 |  | 0 |
Derivative Asset | 6 |  | 5 |
Derivative Liability | $ 1 |  | $ 1 |
[1] | FCX had paid $1 million to brokers at December 31, 2013, and $7 million at December 31, 2012, for margin requirements (recorded in other current assets).
[2] | Included $444 million for deferred premiums and accrued interest at December 31, 2013.

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