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Exceptional Items - Summary of Exceptional Items Related to the Samarco Dam Failure (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
Expenses excluding net finance costs: |  |  |
Costs incurred directly by BHP Brasil and other BHP entities in relation to the Samarco dam failure | $ (36,750) | $ (31,873) | $ (32,371)
(Loss)/profit from equity accounted investments, related impairments and expenses: |  |  |
Fair value change on forward exchange derivatives | (84) | (135) | 29
Net finance costs | (1,489) | (1,531) | (969)
Income tax (expense)/benefit | (6,447) | (7,077) | (10,737)
Exceptional items net | (5,763) | (606) | (1,074)
Samarco dam failure [member] |  |  |
Expenses excluding net finance costs: |  |  |
Costs incurred directly by BHP Brasil and other BHP entities in relation to the Samarco dam failure | (139) | (103) | (66)
(Loss)/profit from equity accounted investments, related impairments and expenses: |  |  |
Samarco dam failure provision | (2,833) | (256) | (595)
Fair value change on forward exchange derivatives | (199) | 471 | (81)
Net finance costs | (506) | (452) | (290)
Income tax (expense)/benefit | (85) | 17 | (31)
Exceptional items net | $ (3,762) | $ (323) | $ (1,063)

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