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Financial Instruments (Unsettled Derivatives) (Details) oz in Thousands, lb in Millions, $ in Millions |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2022 USD ($) lb oz $ / lb $ / oz $ / lb | Jun. 30, 2022 USD ($) $ / lb $ / oz $ / lb | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) $ / lb $ / oz $ / lb | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($)
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset | $ 53 | $ 53 |  | $ 53 |  | $ 77
Derivative Liability, Fair Value, Gross Liability | 546 | 546 |  | 546 |  | 28
Derivative Asset, Fair Value, Gross Liability | 4 | 4 |  | 4 |  | 4
Derivative Liability, Fair Value, Gross Asset | 4 | 4 |  | 4 |  | 4
Derivative Asset | 49 | 49 |  | 49 |  | 73
Derivative Liability | 542 | 542 |  | 542 |  | 24
Trade accounts receivable [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset | 6 | 6 |  | 6 |  | 51
Derivative Liability | 231 | 231 |  | 231 |  | 14
Accounts Payable and Accrued Liabilities |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset | 32 | 32 |  | 32 |  | 10
Derivative Liability | 308 | 308 |  | 308 |  | 10
Other Current Assets [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset | 11 | 11 |  | 11 |  | 12
Derivative Liability | 0 | 0 |  | 0 |  | 0
Other Liabilities |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset | 0 | 0 |  | 0 |  | 0
Derivative Liability | 3 | 3 |  | 3 |  | 0
Commodity Contract |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Matured derivative financial instruments |  | (12) | $ 28 | 2 | $ 52 |
Derivative Asset, Fair Value, Gross Asset | 15 | 15 |  | 15 |  | 13
Derivative Liability, Fair Value, Gross Liability | 70 | 70 |  | 70 |  | 1
Derivative Asset, Fair Value, Gross Liability | 4 | 4 |  | 4 |  | 1
Derivative Liability, Fair Value, Gross Asset | 4 | 4 |  | 4 |  | 1
Derivative Asset | 11 | 11 |  | 11 |  | 12
Derivative Liability | 66 | 66 |  | 66 |  | 0
Embedded Derivative Financial Instruments |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 38 | 38 |  | 38 |  | 64
Derivative Liability, Fair Value, Gross Liability | 476 | 476 |  | 476 |  | 27
Derivative Asset, Fair Value, Gross Liability | 0 | 0 |  | 0 |  | 3
Derivative Liability, Fair Value, Gross Asset | 0 | 0 |  | 0 |  | 3
Derivative Asset | 38 | 38 |  | 38 |  | 61
Derivative Liability | 476 | 476 |  | 476 |  | 24
Designated as Hedging Instrument [Member] | Commodity Contract |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset | $ 0 | $ 0 |  | $ 0 |  | 12
Derivative, Nonmonetary Notional Amount, Mass | lb | 103 |  |  |  |  |
Derivative, Average Forward Price | $ / lb | 4.36 | 4.36 |  | 4.36 |  |
Not Designated as Hedging Instrument | Embedded Derivative Financial Instruments |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset | $ 38 | $ 38 |  | $ 38 |  | 64
Derivative Liability, Fair Value, Gross Liability | $ 476 | $ 476 |  | $ 476 |  | 27
Not Designated as Hedging Instrument | Forward Contracts |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Mass | lb | 34 |  |  |  |  |
Derivative, Average Forward Price | $ / lb | 4.06 | 4.06 |  | 4.06 |  |
Future | Not Designated as Hedging Instrument | FMC's Copper Futures and Swap Contracts [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability | $ 66 | $ 66 |  | $ 66 |  | 0
Commodity Contract | Not Designated as Hedging Instrument | Forward Contracts |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 15 | 15 |  | 15 |  | 1
Derivative Liability, Fair Value, Gross Liability | $ 4 | $ 4 |  | $ 4 |  | $ 1
Copper | Short [Member] | Not Designated as Hedging Instrument | Embedded Derivative Financial Instruments |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Average Market Price | $ / lb | 3.75 | 3.75 |  | 3.75 |  |
Derivative, Nonmonetary Notional Amount, Mass | lb | 703 |  |  |  |  |
Derivative, Average Forward Price | $ / lb | 4.41 | 4.41 |  | 4.41 |  |
Copper | Long [Member] | Not Designated as Hedging Instrument | Embedded Derivative Financial Instruments |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Average Market Price | $ / lb | 3.75 | 3.75 |  | 3.75 |  |
Derivative, Nonmonetary Notional Amount, Mass | lb | 59 |  |  |  |  |
Derivative, Average Forward Price | $ / lb | 4.39 | 4.39 |  | 4.39 |  |
Gold | Short [Member] | Not Designated as Hedging Instrument | Embedded Derivative Financial Instruments |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Average Market Price | $ / oz | 1,821 | 1,821 |  | 1,821 |  |
Derivative, Nonmonetary Notional Amount, Mass | oz | 236 |  |  |  |  |
Derivative, Average Forward Price | $ / oz | 1,848 | 1,848 |  | 1,848 |  |
Sales | Not Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net |  | $ (753) | 133 | $ (513) | 312 |
Sales | Copper | Not Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net |  | (720) | 118 | (502) | 325 |
Sales | gold and other | Not Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net |  | (33) | 15 | (11) | (13) |
Cost of Sales [Member] | Not Designated as Hedging Instrument | Forward Contracts |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Matured derivative financial instruments |  | $ 22 | $ (5) | $ 26 | $ (13) |

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