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Share-Based Payment - Summary of Detailed Information About RSUs and SEBIRs Outstanding and Exercise Prices (Detail) - SEBIRs/RSU [member] shares in Thousands | 12 Months Ended |  |
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Dec. 31, 2022 shares € / shares | Dec. 31, 2021 shares | Dec. 31, 2020 shares
Disclosure of detailed information about RSUs and SEBIRs outstanding and exercise prices [Line Items] |  |  |
Number of other equity instruments outstanding in share-based payment arrangement | 8,008 | 8,008 | 4,591
September 22, 2029 [member] |  |  |
Disclosure of detailed information about RSUs and SEBIRs outstanding and exercise prices [Line Items] |  |  |
Exercise price, share options granted | € / shares | € 1 |  |
Number of other equity instruments outstanding in share-based payment arrangement | 4,168 | 4,168 |
September 22, 2029 [member] |  |  |
Disclosure of detailed information about RSUs and SEBIRs outstanding and exercise prices [Line Items] |  |  |
Exercise price, share options granted | € / shares | € 2.04 |  |
Number of other equity instruments outstanding in share-based payment arrangement | 423 | 423 |
September 22, 2031 [member] |  |  |
Disclosure of detailed information about RSUs and SEBIRs outstanding and exercise prices [Line Items] |  |  |
Exercise price, share options granted | € / shares | € 2.04 |  |
Number of other equity instruments outstanding in share-based payment arrangement | 3,417 | 3,417 |

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