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Financial Instruments - Unrealized gains losses (Details) oz in Thousands, lb in Millions, $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 lb oz $ / oz $ / lb $ / lb | Sep. 30, 2022 USD ($) $ / oz $ / lb $ / lb | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) $ / oz $ / lb $ / lb | Sep. 30, 2021 USD ($)
Not Designated as Hedging Instrument | Amounts recorded in Sales |  |  |  |  |
Realized gains (losses): |  |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net |  | $ (306) | $ (111) | $ (819) | $ 201
Commodity Contract |  |  |  |  |
Unrealized gains (losses): |  |  |  |  |
Derivative financial instruments |  | 17 | (20) | (61) | (28)
Hedged item – firm sales commitments |  | (17) | 20 | 61 | 28
Realized gains (losses): |  |  |  |  |
Matured derivative financial instruments |  | $ (50) | 5 | $ (48) | 57
Commodity Contract | Designated as Hedging Instrument [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Mass | lb | 96 |  |  |  |
Derivative, Average Forward Price | $ / lb | 3.93 | 3.93 |  | 3.93 |
Copper Forward Contracts | Not Designated as Hedging Instrument |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Mass | lb | 10 |  |  |  |
Derivative, Average Forward Price | $ / lb | 3.51 | 3.51 |  | 3.51 |
Copper Forward Contracts | Not Designated as Hedging Instrument | Amounts recorded in Cost of Sales |  |  |  |  |
Realized gains (losses): |  |  |  |  |
Matured derivative financial instruments |  | $ 5 | 1 | $ 31 | (12)
Copper | Not Designated as Hedging Instrument | Amounts recorded in Sales |  |  |  |  |
Realized gains (losses): |  |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net |  | $ (272) | (102) | $ (774) | 223
Copper | Short [Member] | Embedded Derivative Financial Instruments | Not Designated as Hedging Instrument |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Mass | lb | 829 |  |  |  |
Derivative, Average Forward Price | $ / lb | 3.68 | 3.68 |  | 3.68 |
Realized gains (losses): |  |  |  |  |
Derivative Average Market Price | $ / lb | 3.45 | 3.45 |  | 3.45 |
Copper | Long [Member] | Embedded Derivative Financial Instruments | Not Designated as Hedging Instrument |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Mass | lb | 153 |  |  |  |
Derivative, Average Forward Price | $ / lb | 3.77 | 3.77 |  | 3.77 |
Realized gains (losses): |  |  |  |  |
Derivative Average Market Price | $ / lb | 3.47 | 3.47 |  | 3.47 |
Gold | Short [Member] | Embedded Derivative Financial Instruments | Not Designated as Hedging Instrument |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Mass | oz | 281 |  |  |  |
Derivative, Average Forward Price | $ / oz | 1,725 | 1,725 |  | 1,725 |
Realized gains (losses): |  |  |  |  |
Derivative Average Market Price | $ / oz | 1,679 | 1,679 |  | 1,679 |
gold and other | Not Designated as Hedging Instrument | Amounts recorded in Sales |  |  |  |  |
Realized gains (losses): |  |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net |  | $ (34) | $ (9) | $ (45) | $ (22)

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