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Financial Assets at Fair Value Through Other Comprehensive Income - (FVTOCI) (Tables) | 12 Months Ended
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Dec. 31, 2021
Text block [abstract] |
Summary of Financial Assets at Fair Value Through Other Comprehensive Income |
|  | December 31 |
|  | 2020 |  |  | 2021 |
|  | NT$ |  |  | NT$ |  |  | US$ (Note 4) |
Investments in equity instruments at FVTOCI |  | $ | 728,398 |  |  | $ | 943,354 |  |  | $ | 34,007 |
Investments in debt instruments at FVTOCI |  |  | 1,012,736 |  |  |  | 1,076,458 |  |  |  | 38,805 |
|  | $ | 1,741,134 |  |  | $ | 2,019,812 |  |  | $ | 72,812 |
Summary of Investments in Equity Instruments at Fair Value Through Other Comprehensive Income |
| a. | Investments in equity instruments at FVTOCI
|  | December 31 |
|  | 2020 |  |  | 2021 |
|  | NT$ |  |  | NT$ |  |  | US$ (Note 4) |
Unquoted ordinary shares |  | $ | 567,377 |  |  | $ | 820,779 |  |  | $ | 29,588 |
Quoted ordinary shares |  |  | — |  |  |  | 102,124 |  |  |  | 3,682 |
Unquoted preferred shares |  |  | 151,329 |  |  |  | 11,245 |  |  |  | 405 |
Limited partnership |  |  | 9,692 |  |  |  | 9,206 |  |  |  | 332 |
|  | $ | 728,398 |  |  | $ | 943,354 |  |  | $ | 34,007 |
Summary of Investments in Debt Instruments at Fair Value Through Other Comprehensive Income |
| b. | Investments in debt instruments at FVTOCI
|  | December 31 |
|  | 2020 |  |  | 2021 |
|  | NT$ |  |  | NT$ |  |  | US$ (Note 4) |
Unsecured subordinate corporate bonds |  | $ | 1,012,736 |  |  | $ | 1,076,458 |  |  | $ | 38,805 |

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- Definition The disclosure of the fair value of investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: Investments in equity instruments designated at fair value through other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 11A -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_11A_c&doctype=Standard -URIDate 2021-03-24 + Details
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