Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Fair value measurement - Summary of Financial Instruments Measured At Fair Value (Level 3) (Detail)

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Fair value measurement - Summary of Financial Instruments Measured At Fair Value (Level 3) (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Changes in fair value measurement, assets [abstract]    
Assets at beginning of period € 437,659  
Assets at end of period 482,318 € 437,659
Warrant liabilities    
Liabilities at beginning of period 409,901  
Liabilities at end of period 561,640 409,901
Warrant liabilities    
Warrant liabilities    
Transfer into level 1 0 (20,568)
Investment in equity securities    
Changes in fair value measurement, assets [abstract]    
Transfers into Level 3 of fair value hierarchy, assets   41,984
Level 3 of fair value hierarchy | Warrant liabilities    
Warrant liabilities    
Liabilities at beginning of period 0 0
Liabilities at end of period 0 0
Level 3 of fair value hierarchy | Warrant liabilities | Public Warrants    
Warrant liabilities    
Warrants assumed as part of the SPAC transaction   21,260
Losses (gains) recognised in other comprehensive income excluding exchange differences, fair value measurement, liabilities   (14,546)
Transfer into level 1   (6,714)
Level 3 of fair value hierarchy | Warrant liabilities | Private Placement Warrants    
Warrant liabilities    
Warrants assumed as part of the SPAC transaction   20,993
Losses (gains) recognised in other comprehensive income excluding exchange differences, fair value measurement, liabilities   (7,139)
Transfer into level 1   (13,854)
Level 3 of fair value hierarchy | Preference shares derivatives    
Warrant liabilities    
Liabilities at beginning of period 0 0
Warrants assumed as part of the SPAC transaction   255
Losses (gains) recognised in other comprehensive income excluding exchange differences, fair value measurement, liabilities   (69)
Sale of preference shares derivatives   (186)
Liabilities at end of period 0 0
Level 3 of fair value hierarchy | Derivative liabilities    
Warrant liabilities    
Liabilities at beginning of period 0  
Liabilities at end of period 7,442 0
Level 3 of fair value hierarchy | Derivative liabilities | Private Placement Warrants    
Warrant liabilities    
Gains (losses) recognised in other comprehensive income excluding exchange differences, fair value measurement, liabilities   (7,442)
Level 3 of fair value hierarchy | Purchase options    
Changes in fair value measurement, assets [abstract]    
Assets at beginning of period 0 30,400
Fair value gain on purchase options   3,856
Derecognition of substantive purchase option   (34,256)
Assets at end of period 0 0
Level 3 of fair value hierarchy | Investment in equity securities    
Changes in fair value measurement, assets [abstract]    
Assets at beginning of period 31,389 0
Transfers into Level 3 of fair value hierarchy, assets   41,984
Fair value loss on investment in equity securities from level 3 classification   (10,595)
Fair value gain/( loss) on investment in equity securities recognized in other comprehensive income (14,832)  
Assets at end of period € 16,557 € 31,389