v3.26.1
Commitments And Contingencies - Additional Information (Details)
€ in Millions
9 Months Ended
Jun. 30, 2026
EUR (€)
Disclosure of contingent liabilities [abstract]
Initial planintiff claim amount
€ 94.7
Plaintiff claim amount
€ 41.6
X
- Definition
Initial plaintiff claim amount.
+ References
No definition available.
+ Details
Name:
birk_InitialPlaintiffClaimAmount
Namespace Prefix:
birk_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
duration
X
- Definition
Plaintiff Claim Amount
+ References
No definition available.
+ Details
Name:
birk_PlaintiffClaimAmount
Namespace Prefix:
birk_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
ifrs-full_DisclosureOfContingentLiabilitiesAbstract
Namespace Prefix:
ifrs-full_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration