v3.24.1
Lease Arrangements - Summary of Right-of-Use Assets (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Dec. 31, 2021
TWD ($)
Dec. 31, 2023
USD ($)
Disclosure of quantitative information about right-of-use assets [line items]          
Carrying amounts $ 11,442,266   $ 11,060,783   $ 373,686
Additions to right-of-use assets 1,680,516 $ 54,883 2,140,942 $ 3,239,770  
Depreciation charge for right-of-use assets 1,304,020 42,587 1,468,040 1,114,950  
Land [member]          
Disclosure of quantitative information about right-of-use assets [line items]          
Carrying amounts 7,111,397   7,342,703   232,247
Depreciation charge for right-of-use assets 246,617 8,054 236,673 217,674  
Buildings and improvements [member]          
Disclosure of quantitative information about right-of-use assets [line items]          
Carrying amounts 4,081,525   3,411,750   133,296
Depreciation charge for right-of-use assets 726,510 23,727 660,276 509,746  
Machinery and equipment [member]          
Disclosure of quantitative information about right-of-use assets [line items]          
Carrying amounts 179,270   237,260   5,855
Depreciation charge for right-of-use assets 292,936 9,567 538,639 356,052  
Other equipment [member]          
Disclosure of quantitative information about right-of-use assets [line items]          
Carrying amounts 70,074   69,070   $ 2,288
Depreciation charge for right-of-use assets $ 37,957 $ 1,239 $ 32,452 $ 31,478