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Financial Instruments at Fair Value Through Profit or Loss - Additional Information (Detail) - Taiwania Capital Buffalo Fund Co Ltd [Member] - TWD ($) $ in Millions | 12 Months Ended |
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Dec. 31, 2020 | Oct. 31, 2019
Disclosure of detailed information about financial instruments [Line Items] |  |
Amount invested in investment entity |  | $ 300
Ownership percentage in investment entity | 12.90% |

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- Definition Equity ownership percentage in investment entity. + References No definition available. + Details
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- Definition The amount of financial assets that are measured at fair value and for which gains (losses) are recognised in profit or loss. A financial asset shall be measured at fair value through profit or loss unless it is measured at amortised cost or at fair value through other comprehensive income. A gain (loss) on a financial asset measured at fair value shall be recognised in profit or loss unless it is part of a hedging relationship, it is an investment in an equity instrument for which the entity has elected to present gains and losses in other comprehensive income or it is a financial asset measured at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 8 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_8_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Details
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