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Borrowings - Summary of Bank Loans (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2022 TWD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 TWD ($)
--- | --- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |  |
Less: current portion | $ 5,041,841 | $ 164,069 | $ 4,526,683
Noncurrent portion | 94,947,610 | 3,089,737 | 117,164,876
Bank loans [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term borrowings | 87,991,698 | 2,863,381 | 117,973,843
Less: current portion | 5,041,841 | 164,069 | 4,526,683
Financial liabilities for hedging - non-current | 0 | 0 | 4,780,931
Noncurrent portion | 82,949,857 | 2,699,312 | 108,666,229
Bank loans [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term borrowings | 87,991,698 | 2,863,381 | 117,977,485
Bank loans [member] | Cost [member] | Syndicated bank loans [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term borrowings | 0 | 0 | 2,562,926
Bank loans [member] | Cost [member] | Other loans [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term borrowings | 79,657,893 | 2,592,187 | 107,383,417
Bank loans [member] | Cost [member] | Mortgage loans [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term borrowings | 8,333,805 | 271,194 | 8,031,142
Bank loans [member] | Net Unamortized Debt Issue Costs [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term borrowings | $ 0 | $ 0 | $ 3,642

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