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Financial Assets At Fair Value Through Profit Or Loss - (Additional Information) (Detail) $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 HKD ($) | Dec. 31, 2021 HKD ($) | Dec. 31, 2022 USD ($) | Jun. 01, 2022 | May 05, 2022 | Feb. 28, 2022 HKD ($) | Dec. 28, 2021
Financial Assets At Fair Value Through Profit or Loss [Line Items] |  |  |  |  |  |  |
Unrealized gain on stock loan | $ 70,293,600 |  |  |  |  |  |
AMTD Digital [Member] |  |  |  |  |  |  |
Financial Assets At Fair Value Through Profit or Loss [Line Items] |  |  |  |  |  |  |
Equity interests of acquirer |  |  |  |  |  | $ 7,756,228,581 |
AMTD Digital [Member] | Class A and Class B Ordinary Shares [Member] |  |  |  |  |  |  |
Financial Assets At Fair Value Through Profit or Loss [Line Items] |  |  |  |  |  |  |
Equity interests of acquirer |  |  | $ 993 |  |  |  |
Investment A [member] |  |  |  |  |  |  |
Financial Assets At Fair Value Through Profit or Loss [Line Items] |  |  |  |  |  |  |
Effective interest rate of financial assets reclassified out of financial assets at fair value through profit or loss |  |  |  | 2.00% | 2.00% |  | 2.00%
Investment H [Member] |  |  |  |  |  |  |
Financial Assets At Fair Value Through Profit or Loss [Line Items] |  |  |  |  |  |  |
Extinguishment of Debt, Amount | 163,180,000 |  |  |  |  |  |
Listed Equity Shares [member] |  |  |  |  |  |  |
Financial Assets At Fair Value Through Profit or Loss [Line Items] |  |  |  |  |  |  |
Unrealized gain on stock loan |  | $ 47,378,880 |  |  |  |  |
Listed Equity Shares [member] | Stock Loan [member] |  |  |  |  |  |  |
Financial Assets At Fair Value Through Profit or Loss [Line Items] |  |  |  |  |  |  |
Fair value of listed equity shares | $ 169,583,400 | $ 211,331,400 |  |  |  |  |

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