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Trade and other receivables (Details) - Schedule of trade and other receivables - EUR (€) | Dec. 31, 2022 | Dec. 31, 2021
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Schedule of Trade and Other Receivables [Abstract] |  |
Trade receivables – outside parties | € 31,660 | € 120,363
Other receivables – outside parties | 592 | 1,397
Other receivables – related parties | 4,409 | 2,667
Trade and other receivables | € 36,661 | € 124,427

X
- Definition Amount due from parties in nontrade transactions, classified as other. + References No definition available. + Details
Name: | brer_OtherReceivablesOutsideParties.
Namespace Prefix: | brer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of receivables due from related parties. [Refer: Related parties [member]] + References No definition available. + Details
Name: | brer_OtherReceivablesRelatedParties1
Namespace Prefix: | brer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of trade receivables and other receivables. [Refer: Trade receivables; Other receivables] + References No definition available. + Details
Name: | brer_TradeAndOtherReceivables.
Namespace Prefix: | brer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount due from customers for goods and services sold. + References No definition available. + Details
Name: | brer_TradeReceivablesOutsideParties
Namespace Prefix: | brer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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