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Changes in liabilities from financing activities - Reconciliation of Liabilities Arising from Financing Activities (Detail) - TWD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | $ 14,909,803 | $ 11,017,992 | $ 8,625,730
Changes in cash flow from financing activities | 613,558 | 3,544,027 | 2,094,370
Adjustment of right-of-use assets | 419,625 | 292,464 | 255,179
Amortization of loan fees |  | 10,026 | 7,646
Amortization of interest expense | 55,369 | 45,294 | 35,067
Ending balance | 15,998,355 | 14,909,803 | 11,017,992
Short-term bank loans [member] |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance |  | 731,751 |
Changes in cash flow from financing activities |  | (731,751) | 731,751
Ending balance |  |  | 731,751
Long-term bank loans (include the current portion) [member] |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | 13,967,801 | 9,413,365 | 7,733,565
Changes in cash flow from financing activities | 907,306 | 4,513,672 | 1,652,332
Amortization of loan fees |  | 10,026 | 7,646
Amortization of interest expense | 36,612 | 30,738 | 19,822
Ending balance | 14,911,719 | 13,967,801 | 9,413,365
Guarantee deposits [member] |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | 21,600 | 21,625 | 21,670
Changes in cash flow from financing activities | (365) | (25) | (45)
Ending balance | 21,235 | 21,600 | 21,625
Lease liabilities [member] |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | 920,402 | 851,251 | 870,495
Changes in cash flow from financing activities | (293,383) | (237,869) | (289,668)
Adjustment of right-of-use assets | 419,625 | 292,464 | 255,179
Amortization of interest expense | 18,757 | 14,556 | 15,245
Ending balance | $ 1,065,401 | $ 920,402 | $ 851,251

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- Definition The increase (decrease) in liabilities arising from financing activities resulting from financing cash flows. [Refer: Cash flows from (used in) financing activities; Liabilities arising from financing activities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 44B -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_44B_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 44D -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_44D&doctype=Standard -URIDate 2023-03-23 + Details
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