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Equity - Unrealized Gain or Loss on Financial Assets at FVOCI (Detail) - TWD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Statement of changes in equity [abstract] |  |  |
Beginning balance | $ 521 | $ (125) | $ (8)
Recognized for the year, Unrealized gain or loss |  |  |
Equity instruments | 45 | 641 | (111)
Share of profits (loss) of associates and join ventures accounted for using equity method | (2) | 5 | (6)
Transferred accumulated gain or loss to unappropriated earnings resulting from the disposal of equity instruments (Note 9) | 0 | 0 | 0
Ending balance | $ 564 | $ 521 | $ (125)

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- Definition Unrealized gain loss on transferred accumulated changes to unappropriated earnings resulting from the disposal of equity instruments. + References No definition available. + Details
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- Definition Unrealized gain or loss for the year. + References No definition available. + Details
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- Definition Unrealized gain (loss) on equity instrument. + References No definition available. + Details
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- Definition Unrealized gain or loss on financial assets at fair value through other comprehensive income. + References No definition available. + Details
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- Definition Unrealized gain or loss on share of profits (loss) of associates and joint ventures accounted for using equity method. + References No definition available. + Details
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- References No definition available. + Details
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