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Equity - Schedule of employee share compensation (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
Disclosure of fair value measurement of equity [line items] |  |  |
Annual fair value charge of equity settled plans | $ 43 | $ 58 | $ 79
Equity-settled plans |  |  |
Disclosure of fair value measurement of equity [line items] |  |  |
Annual fair value charge of equity settled plans | 43 | 58 | 79
Executive share award plans |  |  |
Disclosure of fair value measurement of equity [line items] |  |  |
Annual fair value charge of equity settled plans | 34 | 49 | 68
Executive share option plans |  |  |
Disclosure of fair value measurement of equity [line items] |  |  |
Annual fair value charge of equity settled plans | 7 | 4 | 5
Savings Plans |  |  |
Disclosure of fair value measurement of equity [line items] |  |  |
Annual fair value charge of equity settled plans | $ 2 | $ 5 | $ 6

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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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- Definition The amount of expense from share-based payment transactions with employees. [Refer: Expense from share-based payment transactions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
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