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Risk management (Details 11) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives |  | $ 61
Recurring fair value measurement [member] |  |
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives | $ (34) | (121)
Recurring fair value measurement [member] | Interest Rate Derivatives [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives | 61 |
Recurring fair value measurement [member] | Foreign Currency Contracts Derivative [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives | (20) |
Recurring fair value measurement [member] | Commodity Derivatives Liabilities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives | (14) |
Level 2 of fair value hierarchy [member] | Recurring fair value measurement [member] |  |
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives | 61 |
Foreign currency derivatives | (22) | (81)
Level 2 of fair value hierarchy [member] | Recurring fair value measurement [member] | Interest Rate Derivatives [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives | 61 |
Level 2 of fair value hierarchy [member] | Recurring fair value measurement [member] | Foreign Currency Contracts Derivative [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives | (20) |
Level 2 of fair value hierarchy [member] | Recurring fair value measurement [member] | Commodity Derivatives Liabilities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives | (2) |
Level 1 of fair value hierarchy [member] | Recurring fair value measurement [member] | Commodity Derivatives Liabilities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Foreign currency derivatives | $ (12) | $ (40)

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