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Acquisitions of Subsidiaries - Summary of Consideration Transferred (Detail) € in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2022 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 USD ($)
Business Acquisition [Line Items] |  |  |  |
Cash |  |  |  | $ 62,800
The Art Newspaper SA [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash |  | $ 2,540 | € 2,888,888 |
Other consideration payable |  | 3,077 |  |
Total |  | 16,831 |  |
Fair value of previously held equity interest |  |  |  | 162,747
Total |  |  |  | 1,155,392
The Art Newspaper SA [Member] | AMTD Digital [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Ordinary shares of the Company | $ 993,000 |  |  |
The Art Newspaper SA [Member] | Common Stock [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Ordinary shares of the Company |  | 5,607 |  |
The Art Newspaper SA [Member] | Common Stock [Member] | AMTD Digital [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Ordinary shares of the Company |  | $ 5,607 |  | $ 992,645

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