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Financial Assets at Fair Value Through Profit or Loss (Details) - Schedule of Financial Assets - EUR (€)	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Current Assets
US listed equity securities	€ 123,670

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- Definition

US listed equity securities.

+ References

No definition available.

+ Details

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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:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration