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Fair Value and Fair Value Hierarchy of Financial Instruments - Disclosure of Fair Value Measurement of Liabilities Explanatory (Detail) - Liability measured at fair value [Member] | Dec. 31, 2021 HKD ($)
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Disclosure of fair value measurement of liabilities [line items] |
Derivative financial instrument | $ 13,752,673
Level 1 [member] |
Disclosure of fair value measurement of liabilities [line items] |
Derivative financial instrument | 0
Level 2 [member] |
Disclosure of fair value measurement of liabilities [line items] |
Derivative financial instrument | 0
Level 3 [member] |
Disclosure of fair value measurement of liabilities [line items] |
Derivative financial instrument | $ 13,752,673

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- Definition The fair value amount of the convertible bond's derivative financial liability component issued by the entity. + References No definition available. + Details
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Namespace Prefix: | amtd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |