Registration statement for securities of certain foreign private issuers

Fair value measurement - Summary of Unobservable Input Parameters Used in The Valuation Model (Detail)

v3.22.1
Fair value measurement - Summary of Unobservable Input Parameters Used in The Valuation Model (Detail) - Purchase Options [Member]
€ in Thousands
12 Months Ended
Dec. 31, 2021
EUR (€)
Unlisted Software Company [Member] | Historical volatility for shares, measurement input [member]  
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items]  
Changes to parameters increase percentage 5.00%
Changes to parameters decrease percentage 5.00%
Increase decrease in fair value measurement due to reasonably possible increase in unobservable inputs € 400
increase decrease in fair value measurement due to reasonably possible decrease in unobservable inputs € 330
Unlisted Software Company [Member] | Spot Price Per Share [Member]  
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items]  
Changes to parameters increase percentage 20.00%
Changes to parameters decrease percentage 20.00%
Increase decrease in fair value measurement due to reasonably possible increase in unobservable inputs € 12,040
increase decrease in fair value measurement due to reasonably possible decrease in unobservable inputs € 3,200
Mega E [Member] | Historical volatility for shares, measurement input [member]  
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items]  
Changes to parameters increase percentage 30.00%
Changes to parameters decrease percentage 30.00%
Increase decrease in fair value measurement due to reasonably possible increase in unobservable inputs € 36
increase decrease in fair value measurement due to reasonably possible decrease in unobservable inputs € 315
Mega E [Member] | Spot Price Per Share [Member]  
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items]  
Changes to parameters increase percentage 20.00%
Changes to parameters decrease percentage 20.00%
Increase decrease in fair value measurement due to reasonably possible increase in unobservable inputs € 7,110
increase decrease in fair value measurement due to reasonably possible decrease in unobservable inputs € 6,993