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RS - Summary of cash-settled 2020 Restricted Stock Unit Plan (Details) - EUR (€)
12 Months Ended
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Apr. 01, 2021
Restricted Stock Unit Plans [Line Items]          
Expenses through Share-based Payment Transactions and Issue of Convertible Instruments   € (5,940,339) € (1,022,786) € (2,587,931)  
Additional Paid-in Capital          
Restricted Stock Unit Plans [Line Items]          
Expenses through Share-based Payment Transactions and Issue of Convertible Instruments € 246,265 (5,940,339) (1,022,786) (2,587,931)  
MorphoSys US Inc. – April 2020 Restricted Stock Unit Plan          
Restricted Stock Unit Plans [Line Items]          
Target achievement         49.00%
Liabilities from share-based payment transactions   290,378      
Expense from cash-settled share-based payment transactions   (28,242) € (1,074,075) € (462,243)  
MorphoSys US Inc. – October 2020 Restricted Stock Unit Plan          
Restricted Stock Unit Plans [Line Items]          
Target achievement 71.00%        
Liabilities from share-based payment transactions   € 61,364