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Business Combinations - Summary of Subsidiary Acquired (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2022 TWD ($)
FAFG [member]
Disclosure of detailed information about business combination [Line Items]
Principal Activity	Holding company and the group engaged in the design and manufacturing of electronic components
Date of Acquisition	Dec. 01, 2020
Proportion of Voting Equity Interests Acquired	100.00%
Cash Consideration	$ 12,443,637
ITGEU [member]
Disclosure of detailed information about business combination [Line Items]
Principal Activity	Trading company
Date of Acquisition	Oct. 21, 2021
Proportion of Voting Equity Interests Acquired	100.00%
Cash Consideration	$ 50,368
SER [Member]
Disclosure of detailed information about business combination [Line Items]
Principal Activity	Engaged in the design and manufacturing of electronic components
Date of Acquisition	Nov. 02, 2021
Proportion of Voting Equity Interests Acquired	100.00%
Cash Consideration	$ 217,919

X

- Definition

The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The date on which the acquirer obtains control of the acquiree in a business combination.

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