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Investments Accounted for Using the Equity Method - Summary of Financial Information of Significant Equity Accounted Investments (Parenthetical) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2016
Disclosure of significant investments in associates and joint ventures [line items] |  |  |  |
Cash and cash equivalents | $ 12,501 | $ 12,428 | $ 17,236 |
Investment | 1,662 | 1,620 | 1,420 |
Net finance costs | (1,489) | (1,531) | (969) |
Depreciation and amortisation | 5,295 | 5,061 | 5,683 |
Interest income | 709 | 529 | 81 |
Interest expense | 2,198 | 2,060 | 1,050 |
Income tax (expense)/benefit | (6,447) | (7,077) | (10,737) |
Samarco Mineracao S.A. [member] |  |  |  |
Disclosure of significant investments in associates and joint ventures [line items] |  |  |  |
Cash and cash equivalents | 251 | 138 |  |
Current financial liabilities (excluding trade and other payables and provisions) |  | 7,154 |  |
Investment |  |  |  |
Share of loss |  |  |  | (655)
Impairment |  |  |  | (525)
Additional share of loss | (7,891) |  |  |
Loss from funding provided to Samarco | (6,147) |  |  |
Net finance costs | (1,744) |  |  |
Depreciation and amortisation | 165 | 144 | 205 |
Interest income | 43 | 42 | 19 |
Interest expense | 807 | 1,384 | 628 |
Income tax (expense)/benefit | 999 | (213) | (7) |
Other finance income | 1,756 | 0 | $ 0 |
Samarco Mineracao S.A. [member] | Working Capital Funding [Member] |  |  |  |
Disclosure of significant investments in associates and joint ventures [line items] |  |  |  |
Additional cumulative impairment losses |  |  |  | $ (516)
Individually immaterial, associates [member] |  |  |  |
Disclosure of significant investments in associates and joint ventures [line items] |  |  |  |
Unrecognised share of profits (losses) | 41 | 76 |  |
Cumulative losses | 100 | 141 |  |
Investment | $ 164 | $ 190 |  |

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