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Exceptional Items - Summary of Exceptional Items by Category (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
Disclosure of exceptional items [line items] |  |  |
Exceptional items gross | $ (6,600) | $ (340) | $ (620)
Exceptional items tax | 837 | (266) | (454)
Exceptional items net | (5,763) | (606) | (1,074)
Samarco dam failure [member] |  |  |
Disclosure of exceptional items [line items] |  |  |
Exceptional items gross | (3,677) | (340) | (1,032)
Exceptional items tax | (85) | 17 | (31)
Exceptional items net | (3,762) | (323) | (1,063)
Chilean Tax Reform [Member] |  |  |
Disclosure of exceptional items [line items] |  |  |
Exceptional items tax |  | (283) |
Exceptional items net |  | (283) |
Impairment of US deferred tax assets [Member] |  |  |
Disclosure of exceptional items [line items] |  |  |
Exceptional items tax |  |  | (423)
Exceptional items net |  |  | (423)
Corporate structure unification costs [Member] |  |  |
Disclosure of exceptional items [line items] |  |  |
Exceptional items gross |  |  | (428)
Exceptional items net |  |  | (428)
BHP Mitsui Coal (BMC) gain on disposal [Member] |  |  |
Disclosure of exceptional items [line items] |  |  |
Exceptional items gross |  |  | 840
Exceptional items net |  |  | 840
Impairment of Western Australia Nickel assets [member] |  |  |
Disclosure of exceptional items [line items] |  |  |
Exceptional items gross | (3,800) | 0 | 0
Exceptional items tax | 1,125 |  |
Exceptional items net | (2,675) |  |
Blackwater and Daunia gain on divestment [member] |  |  |
Disclosure of exceptional items [line items] |  |  |
Exceptional items gross | 877 |  |
Exceptional items tax | (203) |  |
Exceptional items net | 674 |  |
Attributable to non-controlling interests [member] |  |  |
Disclosure of exceptional items [line items] |  |  |
Exceptional items tax |  | (107) |
Exceptional items net |  | (107) |
Attributable to BHP shareholders [member] |  |  |
Disclosure of exceptional items [line items] |  |  |
Exceptional items gross | (6,600) | (340) | (620)
Exceptional items tax | 837 | (159) | (454)
Exceptional items net | $ (5,763) | $ (499) | $ (1,074)

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