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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 ($)
Dec. 31, 2022
HKD ($)
Dec. 31, 2022
USD ($)
Feb. 28, 2022
HKD ($)
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     $ 993 $ 9,027,872,459
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 $ 492,824,872    
Recognized amounts of net assets acquired 530,791,277      
Total $ 37,966,405