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Intangible Assets - Summary of intangible assets (Detail)
 12 Months Ended
Dec. 31, 2022
HKD ($)
Disclosure of detailed information about intangible assets [line items]  
Net carrying amount as of January 1, 2021 and December 31, 2021 $ 15,171,170
Amortization charge during the year (5,688,143)
Disposal of subsidiaries (15,171,170)
Net carrying amount as of December 31, 2022 756,131,422
AMTD Digital [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) 37,565,776
L'Officiel [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) 724,253,789
Securities Trading Licenses And Trading Right [member]  
Disclosure of detailed information about intangible assets [line items]  
Net carrying amount as of January 1, 2021 and December 31, 2021 0
Amortization charge during the year 0
Disposal of subsidiaries (15,171,170)
Net carrying amount as of December 31, 2022 0
Securities Trading Licenses And Trading Right [member] | AMTD Digital [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) 0
Securities Trading Licenses And Trading Right [member] | L'Officiel [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) 0
Archived Images [member]  
Disclosure of detailed information about intangible assets [line items]  
Net carrying amount as of January 1, 2021 and December 31, 2021 0
Amortization charge during the year 0
Net carrying amount as of December 31, 2022 3,901,193
Archived Images [member] | AMTD Digital [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) 0
Archived Images [member] | L'Officiel [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) 3,901,193
Technology-based intangible assets [member]  
Disclosure of detailed information about intangible assets [line items]  
Net carrying amount as of January 1, 2021 and December 31, 2021 0
Amortization charge during the year (5,585,050)
Net carrying amount as of December 31, 2022 30,606,150
Technology-based intangible assets [member] | AMTD Digital [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) 36,191,200
Technology-based intangible assets [member] | L'Officiel [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) 0
Brand names [member]  
Disclosure of detailed information about intangible assets [line items]  
Net carrying amount as of January 1, 2021 and December 31, 2021 0
Amortization charge during the year (103,093)
Net carrying amount as of December 31, 2022 721,624,079
Brand names [member] | AMTD Digital [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) 1,374,576
Brand names [member] | L'Officiel [member]  
Disclosure of detailed information about intangible assets [line items]  
Acquired on acquisition of L'Officiel (Note 34(b)) $ 720,352,596