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Capital Commitment (Details)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 11, 2023 USD ($)	Dec. 11, 2023 VND (₫)	Mar. 14, 2020 USD ($) m²	Mar. 14, 2020 VND (₫) m²
Capital Commitment [Line Items]
Right of use asset | $	$ 3,177,674	$ 3,474,737
Maximum [Member]
Capital Commitment [Line Items]
Area of land					50,000	50,000
Minimum [Member]
Capital Commitment [Line Items]
Area of land					49,997	49,997
Capital Commitment [Member]
Capital Commitment [Line Items]
Right of use asset					$ 4,184,513	₫ 102,476,000,000
Land cost			$ 4,184,262	₫ 102,469,851,440

X

- Definition

Amount of contract for the right to use of land.

+ References

No definition available.

+ Details

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Namespace Prefix:	mgih_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of right-of-use assets net.

+ References

No definition available.

+ Details

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Period Type:	instant

X

- Definition

Area of land held.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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X

- Details

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