Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Share-based payments - Summary of Grant Options and Performance Options granted (Details)

v3.23.3
Share-based payments - Summary of Grant Options and Performance Options granted (Details)
 1 Months Ended 3 Months Ended 9 Months Ended
Apr. 30, 2023
€ / shares
Sep. 30, 2023
shares
€ / shares
Sep. 30, 2023
shares
€ / shares
Sep. 30, 2022
shares
€ / shares
Management Incentive Plan        
Average Exercise Price Per Share Option [Abstract]        
Beginning of year (in EUR per share) | € / shares     € 0.12 € 0
Granted during the period (in EUR per share) | € / shares € 0.12   0 0.12
Exercised during the period (in EUR per share) | € / shares     0 0
Forfeited during the period (in EUR per share) | € / shares     0 0
Ended of year (in EUR per share) | € / shares   € 0.12 0.12 0.12
Average exercise price per share options, Vested and exercisable (in EUR per share) | € / shares   € 0.12 € 0.12 € 0
Number Of Grant Options [Abstract]        
Exercised during the period (in shares)   0 0  
End of year (in shares)   2,658,426 2,658,426  
Grant Options | Management Incentive Plan        
Number Of Grant Options [Abstract]        
Beginning of year (in shares)     1,329,213 0
Granted during the period (in shares)     0 1,329,213
Exercised during the period (in shares)     0 0
Forfeited during the period (in shares)     0 0
End of year (in shares)   1,329,213 1,329,213 1,329,213
Number of options exercisable (in shares)   1,329,213 1,329,213 0
Performance Options        
Average Exercise Price Per Share Option [Abstract]        
Granted during the period (in EUR per share) | € / shares     € 0.12  
Performance Options | Management Incentive Plan        
Number Of Grant Options [Abstract]        
Beginning of year (in shares)     1,329,213 0
Granted during the period (in shares)     0 1,329,213
Exercised during the period (in shares)     0 0
Forfeited during the period (in shares)     0 0
End of year (in shares)   1,329,213 1,329,213 1,329,213
Number of options exercisable (in shares)   996,910 996,910 0
Performance Options | Long-term Incentive Plan        
Average Exercise Price Per Share Option [Abstract]        
Beginning of year (in EUR per share) | € / shares     € 0  
Granted during the period (in EUR per share) | € / shares     0.12  
Exercised during the period (in EUR per share) | € / shares     0  
Forfeited during the period (in EUR per share) | € / shares     0  
Ended of year (in EUR per share) | € / shares   € 0.12 0.12  
Average exercise price per share options, Vested and exercisable (in EUR per share) | € / shares   € 0 € 0  
Number Of Grant Options [Abstract]        
Beginning of year (in shares)       0
Granted during the period (in shares)       3,059,955
Exercised during the period (in shares)       0
Forfeited during the period (in shares)       0
End of year (in shares)       3,059,955
Number of options exercisable (in shares)       0