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Acquisitions of Subsidiaries - Summary of net cash inflow on acquisition (Detail) - HKD ($)
Apr. 30, 2022
Feb. 28, 2022
AMTD Digital [Member]    
Disclosure of detailed information about business combination [line items]    
Cash consideration paid   $ 0
Cash and cash equivalent balances acquired   101,977,036
Net cash transferred on acquisition   $ 101,977,036
L'Officiel [member]    
Disclosure of detailed information about business combination [line items]    
Cash consideration paid $ 0  
Cash and cash equivalent balances acquired 1,935,822  
Net cash transferred on acquisition $ 1,935,822