v3.24.1

Significant Assets and Liabilities Denominated in Foreign Currencies - Summary of Significant Assets and Liabilities Denominated in Foreign Currencies (Detail) € in Thousands, ¥ in Thousands, ¥ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023 TWD ($)	Dec. 31, 2022 TWD ($)	Dec. 31, 2021	Dec. 31, 2023 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 JPY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 EUR (€)	Dec. 31, 2022 JPY (¥)
US Dollar [member] | US dollar equals to New Taiwan dollar [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	$ 167,231,335	$ 172,061,459		$ 5,446,388				$ 5,602,783
Financial liabilities	$ 160,491,098	$ 170,129,161		$ 5,226,872				$ 5,539,862
Exchange Rate	US$1=NT$30.705	US$1=NT$30.71	US$1=NT$27.68
Exchange Rate	US$1=NT$30.705	US$1=NT$30.71	US$1=NT$27.68
US Dollar [member] | US dollar equals to Chinese yuan [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	$ 39,310,262	$ 46,597,573			¥ 1,280,256				¥ 1,517,342
Financial liabilities	$ 31,595,564	$ 41,798,164			¥ 1,029,004				¥ 1,361,060
Exchange Rate	US$1=RMB7.0827	US$1=RMB6.9646
Exchange Rate	US$1=RMB7.0827	US$1=RMB6.9646
US Dollar [member] | Us Dollar Equals To Euro [Member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	$ 2,125,037	$ 739,064				€ 69,208				€ 24,066
Financial liabilities	$ 1,147,458	$ 1,725,989				€ 37,370				€ 56,203
Exchange Rate	US$1=EUR0.9050	US$1=EUR0.9376
Exchange Rate	US$1=EUR0.9050	US$1=EUR0.9376
Japanese Yen [Member] | Japanese yen equals to New Taiwan dollar [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	$ 1,069,957	$ 1,998,417					¥ 4,926,139				¥ 8,599,044
Financial liabilities	$ 1,494,793	$ 2,345,666					6,882,104				10,093,229
Exchange Rate	JPY1=NT$0.2172	JPY1=NT$0.2324
Exchange Rate	JPY1=NT$0.2172	JPY1=NT$0.2324
Japanese Yen [Member] | Japanese yen equals to US dollar [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	$ 39,517	$ 95,385					181,939				410,433
Financial liabilities	$ 209,730	$ 79,943					¥ 965,608				¥ 343,989
Exchange Rate	JPY1=US$0.0071	JPY1=US$0.0076
Exchange Rate	JPY1=US$0.0071	JPY1=US$0.0076

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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