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Dividends - Summary of Franking Credits (Parenthetical) (Detail) $ in Millions | 12 Months Ended
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Jun. 30, 2024 USD ($)
BHP Group Limited [member] |
Disclosure of dividends [line items] |
Decrease in franking account balance due to payment of final dividend | $ 1,608

X
- Definition Decrease in franking credits available due to payment of the final dividend. + References No definition available. + Details
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Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Disclosure of dividends. + References No definition available. + Details
Name: | bhp_DisclosureOfDividendsLineItems
Namespace Prefix: | bhp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=bhp_BHPGroupLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |