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Basis of Preparation - Additional Information (Detail) - EUR (€) € in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basis of preparation [Abstract]
Operating losses	€ (225,324)	€ (62,808)	€ (124,271)
Net losses	(239,751)	(76,452)	€ (135,657)
Accumulated losses	€ (442,618)	€ (224,328)

X

- Definition

The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income]

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