v3.26.1
Share-based Payments - Additional Information (Detail)
€ / shares in Units, € in Millions
6 Months Ended
Jun. 01, 2026
shares
€ / shares
May 01, 2026
€ / shares
Apr. 01, 2026
€ / shares
Mar. 03, 2026
shares
€ / shares
Mar. 01, 2026
€ / shares
Feb. 01, 2026
€ / shares
Jan. 01, 2026
€ / shares
Jun. 30, 2026
EUR (€)
shares
Jun. 30, 2025
EUR (€)
shares
Statement Of Lineitems [Line Items]                  
Weighted average share price | € / shares € 25.02 € 25.12 € 25.42 € 23.05 € 24.03 € 22.83 € 23.63    
Expense from share-based payment transactions | €               € 11.5 € 9.6
Number of share options exercisable in share-based payment arrangement               2,858,237 2,601,619
Share Options Vesting [member]                  
Statement Of Lineitems [Line Items]                  
Percentage of aggregate number of stock options shall vest on One Month at grant date       48.00%          
Key management personnel of entity or parent [member]                  
Statement Of Lineitems [Line Items]                  
Number of instruments granted in share based payment arrangement       575,000          
Weighted average share price | € / shares       € 24.11          
Key management personnel of entity or parent [member] | Share Options Vesting [member]                  
Statement Of Lineitems [Line Items]                  
Percentage of aggregate number of stock options shall vest on one year at grant date       25.00%          
Key management personnel of entity or parent [member] | Milestone [Member]                  
Statement Of Lineitems [Line Items]                  
Number stock options, Granted 60,000                
Key management personnel of entity or parent [member] | Milestone One [Member]                  
Statement Of Lineitems [Line Items]                  
Percentage of aggregate number of restricted stock unit 40.00%             40.00%  
Number of restricted stock unit 24,000             8,000  
Key management personnel of entity or parent [member] | Milestone Two [Member]                  
Statement Of Lineitems [Line Items]                  
Percentage of aggregate number of restricted stock unit 60.00%             60.00%  
Number of restricted stock unit 36,000             12,000  
Key management personnel of entity or parent [member] | Exercise Price of EUR 24.11 Per Share [Member]                  
Statement Of Lineitems [Line Items]                  
Description of maximum term of options granted for share-based payment arrangement       March 2, 2036          
Stock options granted to board of directors [Member]                  
Statement Of Lineitems [Line Items]                  
Number of instruments granted in share based payment arrangement       82,500          
Weighted average share price | € / shares       € 24.11          
Stock options granted to board of directors [Member] | Share Options Vesting [member]                  
Statement Of Lineitems [Line Items]                  
Percentage of aggregate number of stock options shall vest on one year at grant date       100.00%          
Stock options granted to board of directors [Member] | Exercise Price of EUR 24.11 Per Share [Member]                  
Statement Of Lineitems [Line Items]                  
Description of maximum term of options granted for share-based payment arrangement       March 2, 2036          
Restricted Stock units [Member]                  
Statement Of Lineitems [Line Items]                  
Number stock options, Granted               616,605  
Restricted Stock units [Member] | Key management personnel of entity or parent [member]                  
Statement Of Lineitems [Line Items]                  
Number of instruments granted in share based payment arrangement               193,000  
Percentage of aggregate number of stock options shall vest on one year at grant date               25.00%  
Percentage of aggregate number of stock options shall vest on One Month at grant date               48.00%  
Restricted Stock units [Member] | Key management personnel of entity or parent [member] | Milestone [Member]                  
Statement Of Lineitems [Line Items]                  
Number of instruments granted in share based payment arrangement               20,000  
Restricted Stock units [Member] | Employees [Member]                  
Statement Of Lineitems [Line Items]                  
Number of instruments granted in share based payment arrangement               376,105  
Restricted Stock units [Member] | Stock options granted to board of directors [Member]                  
Statement Of Lineitems [Line Items]                  
Number of instruments granted in share based payment arrangement               27,500