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Acquisitions of Subsidiaries - Summary of reserve or gain arising on acquisition (Detail)
$ in Millions
1 Months Ended 12 Months Ended
Apr. 30, 2022
HKD ($)
Dec. 31, 2022
HKD ($)
Feb. 28, 2022
HKD ($)
Feb. 28, 2022
USD ($)
Disclosure of detailed information about business combination [line items]        
Total   $ 37,966,405    
AMTD Digital [Member]        
Disclosure of detailed information about business combination [line items]        
Consideration transferred     $ 9,027,872,459 $ 993
Non-controlling interests     89,294,338  
Non-controlling interests of AMTD Digital     20,848,000  
Recognized amounts of net assets acquired     3,088,674,883  
Total     $ 6,049,339,914  
L'Officiel [member]        
Disclosure of detailed information about business combination [line items]        
Consideration transferred $ 492,824,872      
Recognized amounts of net assets acquired 530,791,277      
Total $ 37,966,405