XML 99 R90.htm IDEA: XBRL DOCUMENT v3.21.2
Lease Arrangements - Ranges Of Discount Rates For Lease Liabilities (Detail)
Jun. 30, 2021
Dec. 31, 2020
Land [member] | Bottom of range [member]    
Disclosure Of Discount Rate On Lease Liabilities [Line Items]    
Discount rate on lease liabilities 0.39% 0.48%
Land [member] | Top of range [member]    
Disclosure Of Discount Rate On Lease Liabilities [Line Items]    
Discount rate on lease liabilities 2.14% 2.14%
Buildings [member] | Bottom of range [member]    
Disclosure Of Discount Rate On Lease Liabilities [Line Items]    
Discount rate on lease liabilities 0.39% 0.54%
Buildings [member] | Top of range [member]    
Disclosure Of Discount Rate On Lease Liabilities [Line Items]    
Discount rate on lease liabilities 3.88% 3.88%
Machinery [member]    
Disclosure Of Discount Rate On Lease Liabilities [Line Items]    
Discount rate on lease liabilities 0.71%  
Office equipment [member] | Bottom of range [member]    
Disclosure Of Discount Rate On Lease Liabilities [Line Items]    
Discount rate on lease liabilities 0.28% 0.28%
Office equipment [member] | Top of range [member]    
Disclosure Of Discount Rate On Lease Liabilities [Line Items]    
Discount rate on lease liabilities 3.88% 3.88%