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Deferred Tax Balances - Summary of Composition of Net Deferred Tax Assets and Liabilities and Deferred Tax Expense Charged/(Credited) to Income Statement (Detail) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | $ 67 | $ 56 |
Deferred tax liabilities | 3,332 | 4,299 |
Charged/(credited) to the income statement | (988) | 387 | $ 125
Depreciation [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | (756) | (629) |
Deferred tax liabilities | 5,221 | 6,259 |
Charged/(credited) to the income statement | (894) | 452 | 554
Exploration expenditure [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 14 | 11 |
Deferred tax liabilities |  | (1) |
Charged/(credited) to the income statement | (2) | (2) | 13
Employee benefits [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 23 | 27 |
Deferred tax liabilities | (407) | (425) |
Charged/(credited) to the income statement | 6 | (94) | 20
Closure and rehabilitations [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 155 | 143 |
Deferred tax liabilities | (1,770) | (1,753) |
Charged/(credited) to the income statement | (29) | (296) | 24
Resource rent tax [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Charged/(credited) to the income statement |  |  | (129)
Other provisions [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 55 | 64 |
Deferred tax liabilities | (196) | (210) |
Charged/(credited) to the income statement | 23 | 4 | 49
Deferred income [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets |  | 14 |
Deferred tax liabilities | (23) |  |
Charged/(credited) to the income statement | (9) | 37 | (31)
Deferred charges [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | (55) | (82) |
Deferred tax liabilities | 522 | 644 |
Charged/(credited) to the income statement | (148) | 85 | 7
Investments, including foreign tax credits [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 274 | 225 |
Deferred tax liabilities | 411 | 370 |
Charged/(credited) to the income statement | (6) | (54) | (298)
Foreign exchange gains and losses [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | (9) | (14) |
Deferred tax liabilities | 80 | 190 |
Charged/(credited) to the income statement | (115) | 42 | 33
Tax losses [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 364 | 276 |
Deferred tax liabilities | (84) | (214) |
Charged/(credited) to the income statement | 40 | 37 | 28
Lease liability [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | 9 | 18 |
Deferred tax liabilities | (730) | (767) |
Charged/(credited) to the income statement | 45 | (83) | (10)
Other [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets | (7) | 3 |
Deferred tax liabilities | 308 | 206 |
Charged/(credited) to the income statement | $ 101 | $ 259 | $ (135)

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