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Trade and Other Receivables (Details)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Trade and Other Receivables (Details) [Line Items]
Percentage of trade receivable	60.00%
Number of customer	1	2
Trade receivables [member]
Trade and Other Receivables (Details) [Line Items]
Number of customer	1

X

- Definition

Number of customer.

+ References

No definition available.

+ Details

Name:	brer_NumberOfCustomer
Namespace Prefix:	brer_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of trade receivable.

+ References

No definition available.

+ Details

Name:	brer_PercentageOfTradeReceivable
Namespace Prefix:	brer_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	brer_TradeandOtherReceivablesDetailsLineItems
Namespace Prefix:	brer_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_TradeReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: