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Financial Assets and Liabilities at Fair Value through Profit or Loss (Tables) | 12 Months Ended
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Dec. 31, 2023
Statement [LineItems] |
Summary of Financial Assets and Liabilities at Fair Value through Profit or Loss |
|  | December 31, 2022 |  |  | December 31, 2023 |
|  |  |  |  | NT$ |  |  |  |  |  |  |  |  | NT$ |  |  |  |
|  |  |  |  | (In Millions) |  |  |  |  |  |  |  |  | (In Millions) |  |  |  |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mandatorily measured at FVTPL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible preferred stocks |  |  |  |  |  | $ | - |  |  |  |  |  |  |  |  |  |  | $ | 13,307.2 |  |  |  |  |
Forward exchange contracts |  |  |  |  |  |  | 947.5 |  |  |  |  |  |  |  |  |  |  |  | 701.2 |  |  |  |  |
Convertible bonds |  |  |  |  |  |  | 122.9 |  |  |  |  |  |  |  |  |  |  |  | 223.4 |  |  |  |  |
Mutual funds |  |  |  |  |  |  | - |  |  |  |  |  |  |  |  |  |  |  | 110.3 |  |  |  |  |
|  |  |  |  |  | $ | 1,070.4 |  |  |  |  |  |  |  |  |  |  | $ | 14,342.1 |  |  |  |  |
Current |  |  |  |  |  | $ | 1,070.4 |  |  |  |  |  |  |  |  |  |  | $ | 924.6 |  |  |  |  |
Noncurrent |  |  |  |  |  |  | - |  |  |  |  |  |  |  |  |  |  |  | 13,417.5 |  |  |  |  |
|  |  |  |  |  | $ | 1,070.4 |  |  |  |  |  |  |  |  |  |  | $ | 14,342.1 |  |  |  |  |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held for trading |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward exchange contracts |  |  |  |  |  | $ | 116.2 |  |  |  |  |  |  |  |  |  |  | $ | 121.4 |  |  |  |  |
Forward exchange contracts [member] |
Statement [LineItems] |
Outstanding Derivative Contracts for which Hedge Accounting Treatment is not Applied | Outstanding forward exchange contracts consisted of the following:
|  | Maturity Date |  | Contract Amount (In Millions)
December 31, 2022 |  |  |  |
Sell NT$ |  | January 2023 to March 2023 |  | NT$  79,610.6
Sell US$ |  | January 2023 to March 2023 |  | US$    752.5
Sell RMB |  | January 2023 to March 2023 |  | RMB  1,448.4
December 31, 2023 |  |  |  |
Sell NT$ |  | January 2024 |  | NT$  26,251.8
Sell US$ |  | January 2024 to March 2024 |  | US$   1,112.0
Sell JPY |  | January 2024 |  | JPY  20,000.0

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