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v3.24.1

Summary of Significant Accounting Policies (Details) - Schedule of Unaudited Condensed Consolidated Financial Statements | 12 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Schedule of Unaudited Condensed Consolidated Financial Statements [Abstract] |  |  |
Year-end spot rate | 7.296 | 7.1135 |
Average rate | 7.0553 | 6.5532 | 6.5072

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- Definition The currency exchange average rate. + References No definition available. + Details
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Namespace Prefix: | gmm_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Currency exchange year end spot rate. + References No definition available. + Details
Name: | gmm_CurrencyExchangeYearendSpotRate
Namespace Prefix: | gmm_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

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