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v3.24.3

Schedule of Issued Capital (Details) (Parenthetical) - shares | 12 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
IfrsStatementLineItems [Line Items] |  |  |
Advisor options exercised, shares | 327,142 |  |
Advisor options forfeited, shares | 16,193 |  |
Bottom of range [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Contractual capitalised interest rate | 8.50% |  |
Top of range [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Contractual capitalised interest rate | 15.00% |  |

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- Definition Advisor options exercised shares + References No definition available. + Details
Name: | MMA_AdvisorOptionsExercisedShares
Namespace Prefix: | MMA_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Advisor options forfeited shares. + References No definition available. + Details
Name: | MMA_AdvisorOptionsForfeitedShares
Namespace Prefix: | MMA_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Definition Contractual capitalised interest rate + References No definition available. + Details
Name: | MMA_ContractualCapitalisedInterestRate
Namespace Prefix: | MMA_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | MMA_IfrsStatementLineItems
Namespace Prefix: | MMA_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |