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Financial Instruments - Summary of Categories of Financial Instruments (Detail) $ in Thousands, $ in Thousands	Dec. 31, 2022 TWD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 TWD ($)
Disclosure of detailed information about financial instruments [line items]
Mandatorily at FVTPL	$ 8,934,151	$ 290,731	$ 5,436,280
Measured at amortized cost (Note 1)	188,733,772	6,141,678	200,732,680
Trade receivables, net	114,646,999	3,730,784	115,462,210
Held for trading	626,760	20,396	417,660
Financial liabilities for hedging	12,204,620	397,157	11,497,896
Measured at amortized cost (Note 2)	318,478,685	10,363,771	339,445,544
Financial assets at fair value through other comprehensive income, category [member]
Disclosure of detailed information about financial instruments [line items]
Equity instruments	482,559	15,703	943,354
Debt instruments	1,059,712	34,485	1,076,458
Trade receivables, net	$ 5,402,714	$ 175,812	$ 6,092,462

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Financial liabilities designated as hedging instruments at fair value through profit or loss

+ References

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- Definition

The amount of current debt instruments issued. [Refer: Debt instruments issued]

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The amount of current financial assets mandatorily measured at fair value through profit or loss in accordance with IFRS 9. [Refer: Financial assets at fair value through profit or loss, mandatorily measured at fair value]

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- Definition

The amount of current financial liabilities at fair value through profit or loss that meet the definition of held for trading. [Refer: Current financial liabilities at fair value through profit or loss]

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The amount of current investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: Investments in equity instruments designated at fair value through other comprehensive income]

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The amount of current trade receivables. [Refer: Trade receivables]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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The amount of financial assets at amortised cost. The amortised cost is the amount at which financial assets are measured at initial recognition minus principal repayments, plus or minus the cumulative amortisation using the effective interest method of any difference between that initial amount and the maturity amount, and adjusted for any impairment. [Refer: Financial assets]

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