v3.26.1
Business combination - Additional Information (Details)
€ in Thousands, $ in Millions
1 Months Ended 3 Months Ended 8 Months Ended 9 Months Ended
Apr. 22, 2026
EUR (€)
Apr. 22, 2026
AUD ($)
Oct. 23, 2025
EUR (€)
Oct. 22, 2025
EUR (€)
Mar. 31, 2026
EUR (€)
Mar. 31, 2026
AUD ($)
Jun. 30, 2026
EUR (€)
Jun. 30, 2026
EUR (€)
Apr. 22, 2026
AUD ($)
Disclosure of detailed information about business combination [line items]                  
Gain on bargain purchase               € 12,291  
Birkenstock Australia Pty. Ltd.                  
Disclosure of detailed information about business combination [line items]                  
Percentage of voting equity interests acquired     100.00%            
Date of acquisition     Oct. 23, 2025            
Business combination, sales contributed             € 37,900    
Business combination, income contributed             € 23,400    
Business combination, additional sales       € 4,300          
Business combination, additional income       € 300          
Purchase price         € 13,800 $ 24.5      
Gain on bargain purchase               € 12,300  
Description of line item in statement of comprehensive income in which gain in bargain purchase transaction is recognised               Other income, net  
Pre-existing trade payables identified related to acquisition     € 21,200            
Acquisition related costs               € 400  
Acquisition costs incurred               € 200  
Birkenstock Australia Pty. Ltd. | Tranches Two                  
Disclosure of detailed information about business combination [line items]                  
Purchase price amount expected to be paid € 7,600 $ 12.5              
Escrow Deposits € 1,800               $ 3.0