Financial Instruments - Summary of Fair Value of Financial Instruments Not Measured at Fair Value but for Which Fair Value is Disclosed (Detail) $ in Thousands, $ in Thousands |
Dec. 31, 2023
TWD ($)
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2022
TWD ($)
|
|---|---|---|---|
| Disclosure of detailed information about financial instruments [line items] | |||
| Bonds payable | $ 45,009,486 | $ 1,469,937 | $ 47,850,324 |
| Fair value [member] | |||
| Disclosure of detailed information about financial instruments [line items] | |||
| Bonds payable | $ 44,907,012 | $ 1,466,591 | $ 47,027,018 |