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General - Additional information (Detail) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Apr. 30, 2023 USD ($) | Apr. 30, 2022 USD ($) | Apr. 30, 2021 USD ($) | [1] | Feb. 23, 2022 USD ($) shares | May 01, 2021 USD ($) | Aug. 03, 2020 USD ($)
Disclosure of General Information About Financial Statements [Line Items] |  |  |  |  |  |  |
Cash transferred |  |  |  |  |  |  | $ 3,000
Other comprehensive income net of tax exchange differences on translation other than translation of foreign operations | $ 257 | $ 4,145 | [1] | $ 574 |  |  |
Reserve of exchange differences on translation |  | $ 4,715 |  |  |  | $ 516 |
AMTD IDEA Group [Member] |  |  |  |  |  |  |
Disclosure of General Information About Financial Statements [Line Items] |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  | 82.70% |  |
Cash transferred |  |  |  |  | $ 992,800 |  |
AMTD IDEA Group [Member] | Common Class A [Member] |  |  |  |  |  |  |
Disclosure of General Information About Financial Statements [Line Items] |  |  |  |  |  |  |
Number of instruments or interests issued or issuable | shares |  |  |  |  | 67,200,330 |  |
AMTD IDEA Group [Member] | Common Class B [Member] |  |  |  |  |  |  |
Disclosure of General Information About Financial Statements [Line Items] |  |  |  |  |  |  |
Number of instruments or interests issued or issuable | shares |  |  |  |  | 51,253,702 |  |
[1] | The comparative consolidated financial statements have been re-presented from Hong Kong dollar to US$ to reflect the Company’s change in presentation currency. See note 1.

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