Schedule of trade and other receivables (Details)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 SGD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2025 SGD ($)	Jun. 30, 2024 SGD ($)
IfrsStatementLineItems [Line Items]
Less: Allowance for expected credit loss	$ (669,000)	$ (865,753)	$ (462,593)	$ (588,373)	$ (460,413)
Trade Receivables	2,060,285	2,666,215		2,151,682
Deposits	5,455,956	7,060,553		6,772,629
Fixed Deposits	231,821	300,000
Prepayments	123,762	160,160		430,767
GST receivables	18,536	23,987
Accrued revenue	19,144	24,774
Trade and other receivables	7,991,266	10,341,500		9,489,266
Thrid Parties [Member]
IfrsStatementLineItems [Line Items]
Trade receivables - third parties	2,729,285	3,531,968		2,740,055
Other receivables - third parties	$ 81,762	$ 105,811		$ 134,188

Accrued revenue.

No definition available.

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- Definition

Allowance for expected credit loss.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Gst receivables.

+ References

No definition available.

+ Details

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

- References

No definition available.

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- Definition

The amount of current trade receivables. [Refer: Trade receivables]

+ References

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Balance Type:	debit
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- Definition

The amount of deposit liabilities held by the entity.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

The amount of long-term deposits held by the entity.

+ References

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- Definition

The amount of current other receivables. [Refer: Other receivables]

+ References

+ Details

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- Definition

Receivables that represent amounts paid for goods and services before they have been delivered.

+ References

+ Details

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- Definition

The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

+ References

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- Definition

The amount due from customers for goods and services sold.

+ References

+ Details

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