Investments Accounted for Using the Equity Method - Summary of Aggregate Information of Associates that are Not Individually Material (Detail) $ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2021 TWD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 TWD ($)	Dec. 31, 2019 TWD ($)
Disclosure of associates and joint ventures [line items]
Net income	$ 62,249,997	$ 2,244,050	$ 28,651,900	$ 18,268,565
Other comprehensive income	406,016	14,637	495,313	(4,370,611)
Total comprehensive income	62,656,013	2,258,687	29,147,213	13,897,954
Associates that are not individually material [member]
Disclosure of associates and joint ventures [line items]
Net income	872,697	31,460	545,833	321,413
Other comprehensive income	3,624,403	130,656	2,784,094	1,401,453
Total comprehensive income	$ 4,497,100	$ 162,116	$ 3,329,927	$ 1,722,866

The amount of change in equity resulting from transactions and other events, other than those changes resulting from transactions with owners in their capacity as owners.

The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income]

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+ Details