v3.25.4
Personnel expenses - Total expenditure on remuneration - Narrative (Details)
 12 Months Ended
Jan. 01, 2022
Dec. 31, 2025
EUR (€)
employee
item
Dec. 31, 2024
Dec. 31, 2023
Personnel expenses [Line Items]        
Number of systems for variable remuneration   1    
Number of levels of testing individual variable remuneration   3    
Number of months salary maximum at Company level   2 months    
Number of months salary maximum outcome for individual variable remuneration based on department's quantitative targets   2 months    
Individual variable remuneration test outcome lower limit   0    
Individual variable remuneration test outcome main function level upper limit   1.5    
Amount of individual variable remuneration test outcome, upper limit | €   € 50,000    
Number of months salary maximum outcome for individual variable remuneration   3 months    
Disbursement percentage under employee incentive scheme year one   40.00%    
Disbursement percentage under employee incentive scheme subsequent years   20.00%    
Disbursement under employee incentive scheme number of subsequent years   3 years    
Number of employees that receive remuneration greater than one million Euro per fiscal year | employee   0    
Additional employer contribution to occupational pension 2.00%      
Holiday pay supplement exchanged for additional contribution of employer 1.45%      
Magnus Montan, Chief Executive Officer (CEO)        
Personnel expenses [Line Items]        
Pension fee on fixed salary (in percent)   30.00% 30.00% 30.00%
Retirement age   65 years 65 years 65 years
Notice period   6 months    
Severance pay period limit   12 months    
Senior executives        
Personnel expenses [Line Items]        
Pension fee on fixed salary (in percent)   30.00%    
Retirement age   65 years