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Financial instruments - Schedule of financial assets and liabilities measured at fair value (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Jun. 30, 2024 | Dec. 31, 2023
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Valuation techniques based on observable market input (Level 2) |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Derivative assets | $ 469 | $ 497 | $ 703
Derivative liabilities | (540) | (486) | (440)
Financial assets/(liabilities) | (71) | 11 | 263
Valuation techniques based on unobservable market input (Level 3) |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Financial assets/(liabilities) | (82) | (110) | (318)
Financial assets - other | 337 | 333 | 281
Financial liabilities - other | $ (419) | $ (443) | $ (599)

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- Definition Financial assets liabilities at fair value. + References No definition available. + Details
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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 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + 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 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_d&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph m -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_m&doctype=Standard -URIDate 2024-03-27 + Details
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