No definition available.

Name:	BMGL_IfrsStatementLineItems
Namespace Prefix:	BMGL_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares subscribed.

+ References

No definition available.

+ Details

Name:	BMGL_NumberOfSharesSubscribed
Namespace Prefix:	BMGL_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The nominal value per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 79
-Subparagraph a
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ParValuePerShare
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from the issuing of ordinary shares. [Refer: Ordinary shares [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 17
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_17&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ProceedsFromIssueOfOrdinaryShares
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares in the entity held by the entity or by its subsidiaries or associates. [Refer: Total for all associates [member]; Total for all subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 79
-Subparagraph a
-Clause vi
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_vi&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_SharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=BMGL_OrdinaryShareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

General (Details Narrative)		12 Months Ended
General (Details Narrative)	Aug. 10, 2023 USD ($) $ / shares shares	Jun. 30, 2025 USD ($)	Jun. 30, 2025 SGD ($)	Jun. 30, 2024 SGD ($)	Apr. 30, 2024 shares
IfrsStatementLineItems [Line Items]
Proceeds from issue of ordinary shares	$ 18,362,500	$ 7,668,358	$ 9,753,384
Par value per share \| $ / shares	$ 1.13
Ordinary Share [Member]
IfrsStatementLineItems [Line Items]
Number of shares subscribe	16,250,000
Number of shares held					12,387,982