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Net Debt - Summary of Interest Bearing Liabilities and Cash and Cash Equivalents Denominated by Currency (Detail) - USD ($) $ in Millions | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
--- | --- | --- | ---
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | $ 20,718 | $ 22,345 |
Cash and cash equivalents | 12,501 | 12,428 | $ 17,236
USD [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 15,203 | 16,289 |
Cash and cash equivalents | 4,445 | 5,925 |
EUR [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 2,440 | 3,050 |
Cash and cash equivalents | 5 | 544 |
GBP [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 1,613 | 1,587 |
Cash and cash equivalents | 711 | 674 |
AUD [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 1,265 | 1,233 |
Cash and cash equivalents | 3,840 | 1,797 |
CAD [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 5 | 7 |
Cash and cash equivalents | 3,259 | 3,362 |
Other [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 192 | 179 |
Cash and cash equivalents | $ 241 | $ 126 |

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