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Derivative Financial Assets - Additional information (Detail) |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 01, 2019 $ / shares | Apr. 01, 2019 $ / shares | Dec. 31, 2022 HKD ($) | Dec. 31, 2022 $ / shares | Dec. 31, 2022 HKD ($) shares | Dec. 31, 2021 HKD ($) | Jun. 26, 2020 $ / shares shares
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Market value of derivative contracts pledged | $ |  |  |  |  | $ 3,781,638,616 | $ 3,089,570,978 |
Underlying listed shares |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Number of shares of investment, disposed | shares |  |  |  |  | 2,673,000 |  | 176,766,469
Number of consideration received from the disposal of investment | shares |  |  |  |  | 15,306,985 |  | 618,682,641
Sale of stock per share | $ / shares |  |  |  | $ 3.27 |  |  | $ 5.5
Bottom of range [member] |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Percentage of profit eligible based on market price | 25.00% |  |  |  |  |  |
Top of range [member] |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Percentage of profit eligible based on market price | 40.00% |  |  |  |  |  |
AMTD Investment Solutions Group And AMTD Strategic Investments [Member] |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Number of shares of investment, disposed | shares |  |  |  |  | 2,673,000 |  | 176,766,469
Upside Participation And Profit Distribution Amendment Agreement One [Member] | AMTD Investment Solutions Group And AMTD Strategic Investments [Member] | Ariana Capital And Investment [Member] |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Percentage of profit eligible based on market price |  | 25.00% |  |  |  |  |
Upside Participation And Profit Distribution Amendment Agreement Two [Member] | Bottom of range [member] |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Underlying, derivative instrument | $ / shares | $ 8.1 |  |  |  |  |  |
Upside Participation And Profit Distribution Amendment Agreement Two [Member] | Top of range [member] |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Underlying, derivative instrument | $ / shares | $ 9 |  |  |  |  |  |
Upside Participation And Profit Distribution Amendment Agreement Two [Member] | AMTD Investment Solutions Group And AMTD Strategic Investments [Member] | Ariana Capital And Investment [Member] |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Underlying, derivative instrument | $ / shares |  | $ 8.1 |  |  |  |  |
Future Settlement Contract [member] |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |
Fair value of underlying shares | $ |  |  |  |  | $ 553,279,047 |  |
Shares entitled to be received at a mutually agreed price as per future settlement contract derivative | $ |  |  |  |  | $ 415,401,202 |  |
Gain or loss on derivative financial assets at fair value through profit or loss | $ |  |  | $ 137,877,845 |  |  |  |

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