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Discontinued Operations - Additional Information (Detail) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Jun. 01, 2022 shares | May 26, 2022 shares | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($)
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |
Total comprehensive income (loss) attributable to BHP shareholders |  |  | $ 7,902 | $ 12,917 | $ 30,820
Exceptional items net |  |  | 5,763 | 606 | 1,074
Consideration paid consisting of cash and cash equivalents |  |  |  |  | 683
Cash and cash equivalents in subsidiary or businesses acquired or disposed |  |  |  |  | (399)
Discontinued operations [member] |  |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |
Total comprehensive income (loss) attributable to BHP shareholders |  |  |  |  | 10,596
Exceptional items net |  |  | $ 0 | $ 0 | (8,159)
Consideration paid consisting of cash and cash equivalents |  |  |  |  | 683
Cash and cash equivalents in subsidiary or businesses acquired or disposed |  |  |  |  | (399)
Discontinued operations [member] | Woodside [Member] |  |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |
Shares received as consideration for disposal of business | shares | 914,768,948 |  |  |  |
Consideration paid consisting of cash and cash equivalents |  |  |  |  | 700
Cash and cash equivalents in subsidiary or businesses acquired or disposed |  |  |  |  | 400
Cash and cash equivalents transferred including cash disposed off |  |  |  |  | 1,100
Discontinued operations [member] | Petroleum [member] | Operating segments [member] |  |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |  |
Shares received as consideration for disposal of business | shares |  | 914,768,948 |  |  |
Share distribution per share held after disposal of business | shares |  | 5.534 |  |  |
Consideration paid consisting of cash and cash equivalents |  |  |  |  | $ 683

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