Financial Instruments - Summary of Detailed Information About Hedges (Detail) $ in Thousands, $ in Thousands |
Dec. 31, 2023
TWD ($)
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2022
TWD ($)
|
|---|---|---|---|
| Disclosure of detailed information about hedges [line items] | |||
| Financial liabilities for hedging - current | $ 12,516,971 | $ 408,784 | $ 12,204,620 |
| Fair value hedge of borrowings denominated in foreign currencies [member] | |||
| Disclosure of detailed information about hedges [line items] | |||
| Financial liabilities for hedging - current | 3,271,312 | 106,836 | 3,278,805 |
| Hedges of net investment in foreign operations [member] | |||
| Disclosure of detailed information about hedges [line items] | |||
| Financial liabilities for hedging - current | $ 9,245,659 | $ 301,948 | $ 8,925,815 |