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Long-term Bank Loans - Summary of Long-term Bank Loans (Detail) $ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2023 USD ($)
Disclosure of detailed information about borrowings [Line Items] |  |  |
Bank loans | $ 14,911,719 | $ 13,967,801 |
Less: Unamortized interest on government granted bank loans | (60,592) | (88,330) |
Less: Current portion (fee included) | (2,263,718) | (1,522,917) | $ (73,930)
Syndicated bank loans, excluding current portion | 12,648,001 | 12,444,884 | $ 413,063
Long-term bank loans [Member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Unused credit lines of long-term bank loans | $ 7,232,770 | $ 9,671,868 |
Gross carrying amount [member] | Minimum [Member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Interest rate range | 1.20% | 1.075% | 1.20%
Gross carrying amount [member] | Maximum [Member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Interest rate range | 1.75% | 1.625% | 1.75%
Gross carrying amount [member] | Government granted bank loans from March 2020 To October 2032 [Member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Bank loans | $ 14,972,311 | $ 14,056,131 |
Period and payment term | Borrowing period is from March 11, 2020 to October 15, 2032; interest is repayable monthly; principal is repayable monthly from March 15, 2023 |  |

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