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Deferred Tax Balances - Summary of Composition of Unrecognised Deferred Tax Assets and Liabilities (Parenthetical) (Detail) - USD ($) $ in Millions | Jun. 30, 2024 | Jun. 30, 2023
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Income and capital tax losses with a tax benefit, which are not recognised as deferred tax assets | $ 5,589 | $ 5,709
Tax credits, which are not recognised as deferred tax assets | 3,537 | 2,863
Gross amount of income tax losses not recognised | 7,356 | 6,829
Gross amount of tax losses not recognized | 20,850 | 20,699
Tax effect of total losses not recognised | 5,589 | 5,709
Due not later than one year [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 28 | 22
Gross amount of capital tax losses not recognised | 0 |
Later than one year and not later than two years [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 10 | 5
Later than two years and not later than five years [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 43 | 47
Gross amount of capital tax losses not recognised | 0 |
Later than five years and not later than 10 years [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 652 | 549
Later than 10 years and not later than 20 years [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Tax credits, which are not recognised as deferred tax assets | 745 | 458
Gross amount of income tax losses not recognised | 1,003 | 1,317
Unlimited [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 5,620 | 4,889
Gross amount of capital tax losses not recognised | 13,494 | 13,870
Not Later than 10 year[member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Tax credits, which are not recognised as deferred tax assets | $ 2,792 | $ 2,405

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