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Financial risk management - D. Financial risk management (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Financial Instruments [Abstract] |  |
Target percent debt in local currency | 40.00% |
Target percent of debt fixed rate | 75.00% |
Target percent of debt floating rate | 25.00% |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative financial liabilities | $ 34 | $ (20)
Cash flow hedges |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Derivative financial liabilities | $ (34) |
Derivative financial assets |  | $ 20

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- Definition The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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