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Cash and Cash Equivalents (Details) - Schedule of cash and cash equivalents - EUR (€) | Dec. 31, 2022 | Dec. 31, 2021
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Schedule Of Cash And Cash Equivalents Abstract |  |
Cash at bank | € 347,229 | € 26,957

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- Definition Cash at Bank means all or any deposits, credit balances and other sums with any financial institution and the accounts in respect of the same. + References No definition available. + Details
Name: | brer_CashAtBank
Namespace Prefix: | brer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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