XML 124 R102.htm IDEA: XBRL DOCUMENT v3.21.1
Lease Arrangements - Ranges Of Discount Rates For Lease Liabilities (Detail)
Dec. 31, 2020
Dec. 31, 2019
Land [member] | Bottom of range [member]    
Disclosure Of Discount Rate On Lease Liabilities [Line Items]    
Discount rate on lease liabilities 0.48% 0.67%
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 0.54% 0.67%
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   3.24%
Office equipment [member] | Bottom of range [member]    
Disclosure Of Discount Rate On Lease Liabilities [Line Items]    
Discount rate on lease liabilities 0.28% 0.64%
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%