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Deferred revenue (Details) - Schedule of deferred revenue in accordance - EUR (€)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Schedule of deferred revenue in accordance [Abstract]
Deferred revenue – outside parties	€ 224,248	€ 29,371

X

- Definition

Amount of deferred revenue – outside parties.

+ References

No definition available.

+ Details

Name:	brer_DeferredRevenueOutsideParties
Namespace Prefix:	brer_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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