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v3.23.1

Financial Risk Management and Fair Values of Financial Instruments - Information on Assets and Liabilities Denominated in Foreign Currencies whose Values would be Materially Affected by Exchange Rate Fluctuations (Detail) ¥ in Thousands, ¥ in Thousands, $ in Thousands, $ in Thousands | Dec. 31, 2022 TWD ($) $ / ¥ $ / $ $ / ¥ | Dec. 31, 2022 USD ($) $ / ¥ $ / $ $ / ¥ | Dec. 31, 2022 JPY (¥) $ / ¥ $ / $ $ / ¥ | Dec. 31, 2022 CNY (¥) $ / ¥ $ / $ $ / ¥ | Dec. 31, 2021 TWD ($) $ / $ $ / ¥ $ / ¥ | Dec. 31, 2021 USD ($) $ / $ $ / ¥ $ / ¥ | Dec. 31, 2021 JPY (¥) $ / $ $ / ¥ $ / ¥ | Dec. 31, 2021 CNY (¥) $ / $ $ / ¥ $ / ¥
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Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Assets denominated in foreign currencies | $ | $ 15,034,220 |  |  |  | $ 13,170,873 |  |  |
Exchange rate | 30.73 | 30.73 | 30.73 | 30.73 |  |  |  |
Currency Risk [member] | US$ [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Assets denominated in foreign currencies | $ 6,418,052 | $ 208,989 |  |  | 5,207,798 | $ 188,143 |  |
Liabilities denominated in foreign currencies | $ 338,762 | $ 11,031 |  |  | $ 1,468,203 | $ 53,042 |  |
Currency Risk [member] | US$ [member] | Financial Liability [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Exchange rate | $ / $ | 30.7100 | 30.7100 | 30.7100 | 30.7100 | 27.6800 | 27.6800 | 27.6800 | 27.6800
Currency Risk [member] | US$ [member] | Financial Asset [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Exchange rate | $ / $ | 30.7100 | 30.7100 | 30.7100 | 30.7100 | 27.6800 | 27.6800 | 27.6800 | 27.6800
Currency Risk [member] | JPY [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Assets denominated in foreign currencies | $ 26,712 |  | ¥ 114,940 |  | $ 34,036 |  | ¥ 141,523 |
Liabilities denominated in foreign currencies | $ 368,989 |  | ¥ 1,587,732 |  | $ 262,005 |  | ¥ 1,089,668 |
Currency Risk [member] | JPY [member] | Financial Liability [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Exchange rate | 0.2324 | 0.2324 | 0.2324 | 0.2324 | 0.2405 | 0.2405 | 0.2405 | 0.2405
Currency Risk [member] | JPY [member] | Financial Asset [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Exchange rate | 0.2324 | 0.2324 | 0.2324 | 0.2324 | 0.2405 | 0.2405 | 0.2405 | 0.2405
Currency Risk [member] | RMB [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Assets denominated in foreign currencies | $ 31,733 |  |  | ¥ 7,199 | $ 21,477 |  |  | ¥ 4,944
Currency Risk [member] | RMB [member] | Financial Asset [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Exchange rate | 4.4080 | 4.4080 | 4.4080 | 4.4080 | 4.3440 | 4.3440 | 4.3440 | 4.3440
Other Risks [Member] | JPY [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Assets denominated in foreign currencies | $ 338,102 |  | ¥ 1,454,830 |  | $ 384,521 |  | ¥ 1,598,839 |
Other Risks [Member] | JPY [member] | Financial Asset [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Exchange rate | 0.2324 | 0.2324 | 0.2324 | 0.2324 | 0.2405 | 0.2405 | 0.2405 | 0.2405
Other Risks [Member] | RMB [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Assets denominated in foreign currencies | $ 4,086,378 |  |  | ¥ 927,037 | $ 3,596,012 |  |  | ¥ 827,811
Other Risks [Member] | RMB [member] | Financial Asset [member] |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [Line Items] |  |  |  |  |  |  |  |
Exchange rate | 4.4080 | 4.4080 | 4.4080 | 4.4080 | 4.3440 | 4.3440 | 4.3440 | 4.3440

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