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Director's Emoluments (Details) - Schedule of Director’s Emoluments - EUR (€) | 6 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022
Schedule of Director's Emoluments [Abstract] |  |
Director’s fee |  | € 32,544
Other emoluments |  | 8,182
Total Director’s emoluments |  | € 40,726

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- Definition Disclosure of company directors' total emoluments. + References No definition available. + Details
Name: | brer_Otheremoluments
Namespace Prefix: | brer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Definition Disclosure of company directors' total emoluments. + References No definition available. + Details
Name: | brer_TotalDirectorsEmoluments
Namespace Prefix: | brer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of remuneration paid or payable to the entity's directors. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_DirectorsRemunerationExpense
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration