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Financial Risk Management and Fair Values of Financial Instruments - Maturity Profile of Non-derivative Financial Liabilities Based on Contracted Undiscounted Payments (Detail) - TWD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] |  |
Short-term bank loans |  | $ 733,523
Long-term bank loans | $ 14,643,068 | 9,766,486
Lease liabilities | 1,118,787 | 1,047,811
Guarantee deposits | 21,600 | 21,625
Total | 15,783,455 | 11,569,445
Within 1 year [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] |  |
Short-term bank loans |  | 733,523
Long-term bank loans | 1,699,165 | 114,953
Lease liabilities | 174,460 | 182,186
Total | 1,873,625 | 1,030,662
1 to 3 years [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] |  |
Long-term bank loans | 5,675,288 | 2,817,662
Lease liabilities | 182,767 | 119,748
Total | 5,858,055 | 2,937,410
3 to 5 years [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] |  |
Long-term bank loans | 5,354,335 | 4,568,521
Lease liabilities | 57,057 | 54,113
Total | 5,411,392 | 4,622,634
Over 5 years [member] |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] |  |
Long-term bank loans | 1,914,280 | 2,265,350
Lease liabilities | 704,503 | 691,764
Guarantee deposits | 21,600 | 21,625
Total | $ 2,640,383 | $ 2,978,739

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