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Share capital - Additional Information (Detail) | Dec. 31, 2022 EUR (€) € / shares shares | Dec. 31, 2022 $ / shares | Dec. 14, 2022 $ / shares | Oct. 20, 2022 shares | Dec. 31, 2021 EUR (€) shares | Dec. 31, 2020 € / shares shares | Dec. 31, 2019 shares
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Disclosure of classes of share capital [line items] |  |  |  |  |  |  |
Treasury shares | € | € 25,023,000 |  |  |  | € 3,000 |  |
Shares cancelled in exchange ratio |  |  | 0.26926188 |  |  |  |
Issued capital | € |  |  |  |  | € 339,259,000 |  |
Number of shares issued and fully paid | 130,971,000 |  |  |  |  |  |
Par value per share | $ / shares |  | $ 0.000001 |  |  |  |  |
LGHL Shares [Member] |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |
Treasury shares | € | € 13,651,246,000 |  |  |  |  |  |
Issued capital | € | € 110,000 |  |  |  |  |  |
Par value per share | $ / shares |  | 0.000001 |  |  |  |  |
Number of shares issued | 117,319,825 |  |  |  |  |  |
Number of shares outstanding | 117,319,825 |  |  |  |  |  |
Convertible Preference Shares [Member] |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |
Number of shares issued and fully paid | 1 |  |  |  |  |  |
Ordinary shares [member] |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |
Number of shares issued and fully paid | 117,319,824 |  |  |  |  |  |
Par value per share | (per share) | € 1 |  | $ 11.5 |  |  | € 1 |
Number of shares outstanding | 0 |  |  |  | 371,386,000 | 289,165 | 265,731
Meritz [Member] | Convertible Preference Shares [Member] |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |
Par value per share | $ / shares |  | 0.000001 |  |  |  |  |
Meritz [Member] | Ordinary shares [member] |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |
Convertible Preferred Stock Shares Issued Upon Conversion |  |  |  | 15,000,000 |  |  |
Par value per share | $ / shares |  | $ 0.000001 |  |  |  |  |

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