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Income Tax Expenses - Additional Information (Detail) - HKD ($)
$ in Millions
12 Months Ended
Nov. 27, 2018
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income tax [line items]        
Preferential Tax rate   15.00% 15.00% 15.00%
Weikun technology [member]        
Income tax [line items]        
Preferential Tax rate 15.00% 15.00% 15.00% 15.00%
PRC company [member] | Bottom of range [member]        
Income tax [line items]        
Increase decrease in withholding tax rate     5.00%  
PRC company [member] | Top of range [member]        
Income tax [line items]        
Increase decrease in withholding tax rate     10.00%  
Hong Kong [member]        
Income tax [line items]        
Income tax rate   16.50%    
Accounting profit   $ 2    
Tax rate effect changes in profit   8.25%    
Average effective tax rate   16.50%    
Singapore [member]        
Income tax [line items]        
Income tax rate   17.00% 17.00% 17.00%
Indonesia [member]        
Income tax [line items]        
Income tax rate   22.00% 22.00% 22.00%
PRC [member]        
Income tax [line items]        
Income tax rate   25.00% 25.00% 25.00%