XML 158 R137.htm IDEA: XBRL DOCUMENT v3.23.1
Share-Based Payment Arrangements - Additional Information (Detail) - TWD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Feb. 14, 2023
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Liabilities from share-based payment transactions $ 30.8  
Employee Restricted Stock Awards [Member]    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Maximum percentage of other equity instruments vested after subject to performance metrics 110.00%  
Maximum percentage of other equity instruments vested subject to entity total shareholder achievement performance metric 100.00%  
Maximum percentage of other equity instruments vested modifier increase decrease subject to environmental social and governance metric achievement 10.00%  
Employee Restricted Stock Awards [Member] | Non Adjusting Events After Reporting Period [Member]    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Number of shares reserved for issuance under share-based payment arrangement   6,200,000
Employee Restricted Stock Awards [Member] | First Year Anniversary of Grant Date [Member]    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Percentage of vesting of award under share-based payment arrangement 50.00%  
Employee Restricted Stock Awards [Member] | Second Year Anniversary Of Grant Date [Member]    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Percentage of vesting of award under share-based payment arrangement 25.00%  
Employee Restricted Stock Awards [Member] | Third Year Anniversary Of Grant Date [Member]    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Percentage of vesting of award under share-based payment arrangement 25.00%