v3.26.1
Condensed Consolidated Statements of Changes in Shareholders' Equity (Deficit) (Unaudited) (Parenthetical)
€ in Millions
9 Months Ended
Jun. 30, 2026
EUR (€)
Statement of changes in equity [abstract]
Transaction cost, net
€ 0.2
X
- Definition
Increase decrease through transaction costs.
+ References
No definition available.
+ Details
Name:
birk_IncreaseDecreaseThroughTransactionCosts
Namespace Prefix:
birk_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
ifrs-full_StatementOfChangesInEquityAbstract
Namespace Prefix:
ifrs-full_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration