Significant Events - Summary of Provision for Samarco Dam Failure (Detail) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Disclosure of other provisions [line items] | ||
| Current | $ 4,768 | $ 5,823 |
| Non-current | 15,336 | 13,498 |
| Samarco dam failure | ||
| Disclosure of other provisions [line items] | ||
| At the beginning of the financial year | 5,849 | 6,505 |
| Movement in provision | (652) | (656) |
| Utilised | (2,030) | (1,773) |
| Increase (decrease) in accounting estimate | 575 | 540 |
| Amortisation of discounting impacting net finance costs | 600 | 458 |
| Exchange translation | 203 | 119 |
| Current | 1,653 | 2,958 |
| Non-current | 3,544 | 2,891 |
| At the end of the financial year | $ 5,197 | $ 5,849 |
| X | ||||||||||
- Definition The increase (decrease) in other provisions. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of current provisions, including provisions for employee benefits. [Refer: Provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. No definition available.
|
| X | ||||||||||
- Definition The increase (decrease) in an accounting estimate that has an effect in the current period or is expected to have an effect in future periods. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The increase (decrease) in other provisions resulting from a change in discount rate. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The amount of non-current provisions, including provisions for employee benefits. [Refer: Provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of provisions other than provisions for employee benefits. [Refer: Provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|