Post-effective amendment to a registration statement that is not immediately effective upon filing

Revenue from contracts with customers - Summary of the Disaggregation of the Group's Revenue from Contracts with Customers (Detail)

v3.22.2.2
Revenue from contracts with customers - Summary of the Disaggregation of the Group's Revenue from Contracts with Customers (Detail) - EUR (€)
€ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of disaggregation of revenue from contracts with customers [line items]          
Revenue from contracts with customers € 50,692 € 20,418 € 86,291 € 44,249 € 25,822
Goods or services transferred over time [member]          
Disclosure of disaggregation of revenue from contracts with customers [line items]          
Revenue from contracts with customers 8,257 5,085 22,930 14,162 7,160
Goods or services transferred at point in time [member]          
Disclosure of disaggregation of revenue from contracts with customers [line items]          
Revenue from contracts with customers 42,435 15,333 63,361 30,087 18,662
Charging Sessions [Member]          
Disclosure of disaggregation of revenue from contracts with customers [line items]          
Revenue from contracts with customers 23,994 11,006 26,108 14,879 9,515
Service Revenue From The Sale Of Charging Equipment [Member]          
Disclosure of disaggregation of revenue from contracts with customers [line items]          
Revenue from contracts with customers 18,442 4,326 37,253 15,207 9,147
Service Revenue From Installation Services [Member]          
Disclosure of disaggregation of revenue from contracts with customers [line items]          
Revenue from contracts with customers 5,964 3,693 19,516 12,313 6,880
Service Revenue From Operation And Maintenance of Charging Equipment [Member]          
Disclosure of disaggregation of revenue from contracts with customers [line items]          
Revenue from contracts with customers 1,822 1,393 € 3,414 € 1,850 € 280
Consulting Services [Member]          
Disclosure of disaggregation of revenue from contracts with customers [line items]          
Revenue from contracts with customers € 470 € 0