History And Reorganization of The Group - Summary of Direct or Indirect Interests In The Principal Subsidiaries And The Principal Consolidated Affiliated Entities (Parenthetical) (Detail) $ in Millions |
Dec. 31, 2025
HKD ($)
|
Dec. 31, 2024
HKD ($)
|
Aug. 05, 2024
CNY (¥)
|
Nov. 13, 2023
HKD ($)
|
|---|---|---|---|---|
| Disclosure of subsidiaries [line items] | ||||
| Capital Contribution Before Increase | ¥ | ¥ 8,494,800,000 | |||
| Capital Contribution After Increase | ¥ | ¥ 9,435,425,000 | |||
| PAO Bank Limited [Member] | ||||
| Disclosure of subsidiaries [line items] | ||||
| Additional paid-in capital | $ | $ 700 | $ 500 | ||
| Cash transferred | $ | $ 933 |