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Operating costs - Other external charges (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
Analysis of income and expense [abstract] |  |  |
Research and development expenditure | $ 69 | $ 63 | $ 58
Maintenance and repairs expense | $ 171 | $ 171 | $ 181

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- Definition The amount of expenses incurred for the day-to-day servicing of assets, which may include the cost of labour, consumables or small parts. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_85&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of expenditure directly attributable to research or development activities, recognised in profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2023-01-01 -Paragraph 126 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_126&doctype=Standard -URIDate 2023-03-23 + Details
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