The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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+ Details

Segment Information - Geographic Information of Revenue (Detail) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 TWD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 TWD ($)	Dec. 31, 2020 TWD ($)
Disclosure of geographical areas [Line Items]
Revenue	$ 23,517,064	$ 765,280	$ 27,400,035	$ 23,011,381
ROC [member]
Disclosure of geographical areas [Line Items]
Revenue	18,671,142		21,608,567	18,341,726
Japan [member]
Disclosure of geographical areas [Line Items]
Revenue	1,989,805		1,768,460	1,291,026
People's Republic of China ("PRC") [member]
Disclosure of geographical areas [Line Items]
Revenue	1,970,943		1,899,362	1,105,535
Singapore [member]
Disclosure of geographical areas [Line Items]
Revenue	390,488		1,630,733	1,838,394
Others [member]
Disclosure of geographical areas [Line Items]
Revenue	$ 494,686		$ 492,913	$ 434,700