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Notes to the Consolidated Statements of Cash Flows - Additional Information (Detail) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Other Receivables [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Value of consideration received non cash transaction |  | $ 388,972,000 |  |
Common Class B [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Stock repurchased during the period shares |  | 4,773,270 | 36,923,963 | 69,144,673
Common Class A [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Stock repurchased during the period shares |  | 0 | 0 | 0
Common Class A [Member] | Private Investor [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Stock repurchased during the period shares |  |  | 5,852,805 |
Stock repurchased during the period value |  |  | $ 4,280 |
Common Class A [Member] | Convertible Debt [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities | 1,856,436 |  | 1,856,436 |
Financial Assets At Fair Value Through Profit Or Loss [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Consideration payable through current accounts of the group |  |  |  | $ 20,930,000
Purchase of financial assets a fair value through profit or loss |  |  |  | 20,930,000
Listed Equity Investment [Member] | Common Class A [Member] | Private Investor [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Value of consideration received non cash transaction |  |  | $ 25,050,000 |
One Of The Former Fellow Subsidiaries [Member] | Underlying Securities For The Other Equity Linked Note [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Disposal of equity linked notes consideration receivable through current accounts |  |  |  | 23,365,000
Gain loss on sale of investments |  |  |  | 15,322,000
One Of The Former Fellow Subsidiaries [Member] | Financial Assets At Fair Value Through Profit Or Loss [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Gain loss on sale of investments |  |  |  | 772,000
Disposal of financial assets at fair value through profit or loss consideration receivable through current accounts |  |  |  | 25,145,000
Consideration payable through current accounts of the group |  |  |  | $ 25,145,000
AMTD Group [Member] | Common Class B [Member] |  |  |  |
Cash Flow Supplemental Disclosures [Line Items] |  |  |  |
Stock repurchased during the period shares |  | 4,773,270 | 36,923,963 | 69,144,673
Stock repurchased during the period value |  | $ 40,000,000 | $ 320,603,000 | $ 642,055,000
Payable for the repurchase of shares through current accounts of the group |  | $ 40,000,000 | $ 320,603,000 | $ 642,055,000

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