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Borrowings - Summary of Short Term Borrowings (Parenthetical) (Detail)
Dec. 31, 2020
Dec. 31, 2019
Secured Loan [Member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Annual interest rates 0.90%  
Secured Loan [Member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Annual interest rates 1.87%  
Unsecured Loan [Member] | Bottom of range [member]    
Disclosure of detailed information about borrowings [line items]    
Annual interest rates 0.58% 0.70%
Unsecured Loan [Member] | Top of range [member]    
Disclosure of detailed information about borrowings [line items]    
Annual interest rates 3.83% 5.40%