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Discontinued Operations - Summary of Tabular Form Of Exceptional Items Relating to Discontinued Operations (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
Disclosure In Tabular Form Of Exceptional Items Relating To Discontinued Operations [Line Items] |  |  |
Exceptional items gross | $ (6,600) | $ (340) | $ (620)
Exceptional items tax | 837 | (266) | (454)
Exceptional items net | (5,763) | (606) | (1,074)
Attributable to BHP shareholders [member] |  |  |
Disclosure In Tabular Form Of Exceptional Items Relating To Discontinued Operations [Line Items] |  |  |
Exceptional items gross | (6,600) | (340) | (620)
Exceptional items tax | 837 | (159) | (454)
Exceptional items net | (5,763) | (499) | (1,074)
Discontinued operations [member] |  |  |
Disclosure In Tabular Form Of Exceptional Items Relating To Discontinued Operations [Line Items] |  |  |
Exceptional items gross |  |  | 8,167
Exceptional items tax |  |  | (8)
Exceptional items net | $ 0 | $ 0 | 8,159
Discontinued operations [member] | Gain on Petroleum disposal [member] |  |  |
Disclosure In Tabular Form Of Exceptional Items Relating To Discontinued Operations [Line Items] |  |  |
Exceptional items gross |  |  | 8,167
Exceptional items tax |  |  | (8)
Exceptional items net |  |  | 8,159
Discontinued operations [member] | Attributable to BHP shareholders [member] |  |  |
Disclosure In Tabular Form Of Exceptional Items Relating To Discontinued Operations [Line Items] |  |  |
Exceptional items gross |  |  | 8,167
Exceptional items tax |  |  | (8)
Exceptional items net |  |  | $ 8,159

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