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Financial instruments - additional disclosures (Details 3) - Contract or underlying principal amout [member] - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of derivative financial instruments [line items] |  |
Derivative financial instruments | $ 8,043 | $ 13,347
EUR |  |
Disclosure of derivative financial instruments [line items] |  |
Derivative financial instruments | 767 | 1,485
USD |  |
Disclosure of derivative financial instruments [line items] |  |
Derivative financial instruments | 5,715 | 5,257
Others |  |
Disclosure of derivative financial instruments [line items] |  |
Derivative financial instruments | 1,561 | 6,605
Derivative financial instruments, at fair value currency related [member] |  |
Disclosure of derivative financial instruments [line items] |  |
Derivative financial instruments, forward foreign exchange rate contracts | 7,907 | 13,248
Derivative financial instruments, commodity purchase contract | 97 | 17
Derivative financial instruments, options on equity securities | 39 | 82
Derivative financial instruments, at fair value currency related [member] | EUR |  |
Disclosure of derivative financial instruments [line items] |  |
Derivative financial instruments, forward foreign exchange rate contracts | 687 | 1,485
Derivative financial instruments, commodity purchase contract | 80 |
Derivative financial instruments, at fair value currency related [member] | USD |  |
Disclosure of derivative financial instruments [line items] |  |
Derivative financial instruments, forward foreign exchange rate contracts | 5,659 | 5,158
Derivative financial instruments, commodity purchase contract | 17 | 17
Derivative financial instruments, options on equity securities | 39 | 82
Derivative financial instruments, at fair value currency related [member] | Others |  |
Disclosure of derivative financial instruments [line items] |  |
Derivative financial instruments, forward foreign exchange rate contracts | $ 1,561 | $ 6,605

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