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Tax credit and other receivables/Other payables - Additional Information (Detail) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Temporary Differences For Which No Deferred Tax AssetIs Recognised € 5,106 € 37,584
Corporate tax rate 25.00%  
Unrecognized tax losses € 182,567 140,087
Share Based Plan [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Temporary Differences For Which No Deferred Tax AssetIs Recognised 5,106 € 37,584
Wallbox USA [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Unrecognized tax losses € 54,533