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Share Capital - Summary of Share Capital (Detail) - shares |  | 12 Months Ended
--- | --- | ---
Jan. 31, 2022 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
BHP Group Limited [member] |  |  |  |
Share capital issued |  |  |  |
Opening number of shares |  | 5,065,820,556 | 5,062,323,190 | 2,945,851,394
Issue of shares |  | 5,710,261 | 3,497,366 | 4,400,000
Corporate structure unification | 2,112,071,796 | 0 |  | 2,112,071,796
Purchase of shares by ESOP Trusts |  | (5,687,667) | (6,442,571) | (8,704,669)
Employee share awards exercised following vesting |  | 5,841,767 | 6,081,843 | 8,522,684
Movement in treasury shares under Employee Share Plans |  | (154,100) | 360,728 | 181,985
Closing number of shares |  | 5,071,530,817 | 5,065,820,556 | 5,062,323,190
BHP Group Limited [member] | Shares held by the public [member] |  |  |  |
Share capital issued |  |  |  |
Opening number of shares |  | 5,064,408,782 | 5,061,272,144 |
Closing number of shares |  | 5,070,273,143 | 5,064,408,782 | 5,061,272,144
BHP Group Limited [member] | Treasury shares [member] |  |  |  |
Share capital issued |  |  |  |
Opening number of shares |  | 1,411,774 | 1,051,046 |
Closing number of shares |  | 1,257,674 | 1,411,774 | 1,051,046
BHP Group Plc [member] |  |  |  |
Share capital issued |  |  |  |
Opening number of shares |  |  |  | 2,112,071,796
Corporate structure unification |  |  |  | (2,112,071,796)
Purchase of shares by ESOP Trusts |  |  |  | (63,567)
Employee share awards exercised following vesting |  |  |  | 77,748
Movement in treasury shares under Employee Share Plans |  |  |  | (14,181)

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