Segment Reporting - Summary of Reportable Segments (Parenthetical) (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2022 |
|
| Disclosure of reportable segments [line items] | |||
| Exceptional impairment losses | $ 6,600 | $ 340 | $ 620 |
| Exceptional items | (36,750) | (31,873) | (32,371) |
| Samarco dam failure [member] | |||
| Disclosure of reportable segments [line items] | |||
| Exceptional impairment losses | 3,677 | 340 | 1,032 |
| Exceptional items | (139) | (103) | (66) |
| Impairment of Western Australia Nickel assets [member] | |||
| Disclosure of reportable segments [line items] | |||
| Exceptional impairment losses | 3,800 | 0 | 0 |
| Group and unallocated items/eliminations [member] | Samarco dam failure [member] | |||
| Disclosure of reportable segments [line items] | |||
| Exceptional items | $ (105) | $ (64) | $ (13) |