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Financial instruments and risk management - Schedule of average monthly net borrowings and effective interest rate (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
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Disclosure of average monthly borrowings and effective interest rate [line items] |  |  |
Average monthly net borrowings | $ 21,017 | $ 19,582 | $ 17,107
Effective interest rate | 4.30% | 3.90% | 2.70%
Weighted average |  |  |
Disclosure of average monthly borrowings and effective interest rate [line items] |  |  |
Average monthly net borrowings | $ 21,034 | $ 18,362 | $ 16,883

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- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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