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Financial Instruments - Unsettled Derivatives (Details) oz in Thousands, lb in Millions, $ in Millions |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2023 oz lb | Sep. 30, 2023 USD ($) $ / lb $ / oz $ / lb | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) lb $ / lb $ / oz $ / lb | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($)
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | $ 16 |  | $ 16 |  | $ 170
Derivative Liability, Fair Value, Gross Liability |  | 44 |  | 44 |  | 42
Derivative Asset, Fair Value, Gross Liability |  | 3 |  | 3 |  | 0
Derivative Liability, Fair Value, Gross Asset |  | 3 |  | 3 |  | 0
Derivative Asset |  | 13 |  | 13 |  | 170
Derivative Liability |  | 41 |  | 41 |  | 42
Trade accounts receivable [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset |  | 5 |  | 5 |  | 163
Derivative Liability |  | 20 |  | 20 |  | 7
Accounts Payable and Accrued Liabilities |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset |  | 8 |  | 8 |  | 3
Derivative Liability |  | 21 |  | 21 |  | 34
Other Current Assets [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset |  | 0 |  | 0 |  | 4
Derivative Liability |  | 0 |  | 0 |  | 0
Other Liabilities |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset |  | 0 |  | 0 |  | 0
Derivative Liability |  | 0 |  | 0 |  | 1
Commodity Contract |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Matured derivative financial instruments |  | (4) | $ (50) | (1) | $ (48) |
Derivative Asset, Fair Value, Gross Asset |  | 0 |  | 0 |  | 4
Derivative Liability, Fair Value, Gross Liability |  | 9 |  | 9 |  | 3
Derivative Asset |  | 0 |  | 0 |  | 4
Derivative Liability |  | 9 |  | 9 |  | 3
Embedded Derivative Financial Instruments |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 16 |  | 16 |  | 166
Derivative Liability, Fair Value, Gross Liability |  | 35 |  | 35 |  | 39
Derivative Asset, Fair Value, Gross Liability |  | 3 |  | 3 |  | 0
Derivative Liability, Fair Value, Gross Asset |  | 3 |  | 3 |  | 0
Derivative Asset |  | 13 |  | 13 |  | 166
Derivative Liability |  | 32 |  | 32 |  | 39
Designated as Hedging Instrument [Member] | Commodity Contract |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | $ 0 |  | $ 0 |  | 3
Derivative, Nonmonetary Notional Amount, Mass | lb |  |  |  | 85 |  |
Derivative, Average Forward Price | $ / lb |  | 3.85 |  | 3.85 |  |
Not Designated as Hedging Instrument | Embedded Derivative Financial Instruments |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | $ 16 |  | $ 16 |  | 166
Derivative Liability, Fair Value, Gross Liability |  | 35 |  | 35 |  | 39
Not Designated as Hedging Instrument | Forward Contracts |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Matured derivative financial instruments |  | $ (1) | 5 | $ (3) | 31 |
Derivative, Nonmonetary Notional Amount, Mass | lb |  |  |  | 19 |  |
Derivative, Average Forward Price | $ / lb |  | 3.77 |  | 3.77 |  |
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 |  | $ 8 |  | $ 8 |  | 3
Commodity Contract | Not Designated as Hedging Instrument | Forward Contracts |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 0 |  | 0 |  | 1
Derivative Liability, Fair Value, Gross Liability |  | 1 |  | 1 |  | $ 0
Copper | Not Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net |  | $ (30) | (272) | $ 31 | (774) |
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 |  |
Derivative, Nonmonetary Notional Amount, Mass | lb | 553 |  |  |  |  |
Derivative, Average Forward Price | $ / lb |  | 3.78 |  | 3.78 |  |
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 |  |
Derivative, Nonmonetary Notional Amount, Mass | lb | 165 |  |  |  |  |
Derivative, Average Forward Price | $ / lb |  | 3.80 |  | 3.80 |  |
Gold | Short [Member] | Not Designated as Hedging Instrument | Embedded Derivative Financial Instruments |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Average Market Price | $ / oz |  | 1,884 |  | 1,884 |  |
Derivative, Nonmonetary Notional Amount, Mass | oz | 209 |  |  |  |  |
Derivative, Average Forward Price | $ / oz |  | 1,925 |  | 1,925 |  |
gold and other | Not Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net |  | $ (10) | $ (34) | $ 12 | $ (45) |

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