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Contents of Significant Accounts - Details of Long-term Loans (Detail) $ in Thousands, $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($)
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 36,476,909 |  | $ 22,883,344
Less: Current portion | (5,528,409) |  | (2,227,096)
Total | 30,948,500 | $ 943,840 | 20,656,248
Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 36,476,909 |  | $ 22,883,344
Bottom of range [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Interest rates applied | 1.53% | 1.53% | 1.67%
Top of range [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Interest rates applied | 5.49% | 5.49% | 6.56%
Secured Long-Term Loan from Mega International Commercial Bank (1) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from October 24, 2019 to October 24, 2024 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from Mega International Commercial Bank (1) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 0 |  | $ 4,866
Secured Long-Term Loan from Mega International Commercial Bank (2) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from February 23, 2022 to February 22, 2027 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from Mega International Commercial Bank (2) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 9,529 |  | 13,765
Secured Long-Term Loan from Mega International Commercial Bank (3) [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from December 22, 2022 to February 23, 2027 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from Mega International Commercial Bank (3) [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 32,029 |  | 46,265
Secured Long-Term Loan from Mega International Commercial Bank (4) [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from April 10, 2024 to March 15, 2031 with monthly interest payments. Interest-only payment for the first three years. |  |
Secured Long-Term Loan from Mega International Commercial Bank (4) [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 41,050 |  | 0
Secured Long-Term Loan from Taiwan Cooperative Bank (1) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from October 19, 2015 to October 19, 2025 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from Taiwan Cooperative Bank (1) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 11,892 |  | 23,784
Secured Long-Term Loan from Taiwan Cooperative Bank (2) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from August 13, 2020 to August 13, 2025 with monthly interest payments. |  |
Secured Long-Term Loan from Taiwan Cooperative Bank (2) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 8,000 |  | 20,000
Secured Long-Term Loan from Taiwan Cooperative Bank (3) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from October 29, 2020 to August 29, 2025 with monthly interest payments. |  |
Secured Long-Term Loan from Taiwan Cooperative Bank (3) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 4,138 |  | 10,345
Secured Long-Term Loan from Taiwan Cooperative Bank (4) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from April 15, 2021 to April 15, 2026 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from Taiwan Cooperative Bank (4) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 33,667 |  | 58,916
Secured Long-Term Loan from Taiwan Cooperative Bank (5) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from December 28, 2023 to December 28, 2028 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from Taiwan Cooperative Bank (5) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 34,400 |  | 34,400
Secured Long-Term Loan from Taiwan Cooperative Bank (6) [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from October 15, 2024 to October 15, 2031 with monthly interest payments. Interest-only payment for the first and the second year. |  |
Secured Long-Term Loan from Taiwan Cooperative Bank (6) [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 19,500 |  | 0
Secured Syndicated Loans from China Development Bank and 6 others [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable semi-annually from March 19, 2021 to March 18, 2031 with semi-annually interest payments. Interest-only payment for the first and the second year. |  |
Secured Syndicated Loans from China Development Bank and 6 others [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 10,025,233 |  | 11,766,832
Secured Long-Term Loan from First Commercial Bank (1) [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from December 2, 2021 to December 2, 2026 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from First Commercial Bank (1) [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 24,076 |  | 35,668
Secured Long-Term Loan from First Commercial Bank (2) [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from March 22, 2024 to March 15, 2031 with monthly interest payments. Interest-only payment for the first three years. |  |
Secured Long-Term Loan from First Commercial Bank (2) [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 63,080 |  | 0
Secured Long-Term Loan from KGI Bank [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Settlement due on December 25, 2026 with monthly interest payments. |  |
Secured Long-Term Loan from KGI Bank [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 21,000 |  | 21,000
Secured Long-Term Loan from Shanghai Commercial Bank (1) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from January 19, 2022 to December 15, 2026 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from Shanghai Commercial Bank (1) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 11,100 |  | 16,650
Secured Long-Term Loan from Shanghai Commercial Bank (2) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from March 23, 2023 to March 15, 2028 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from Shanghai Commercial Bank (2) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 4,046 |  | 4,980
Secured Long-Term Loan from Shanghai Commercial Bank (3) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from June 6, 2023 to March 15, 2028 with monthly interest payments. Interest-only payment for the first year. |  |
Secured Long-Term Loan from Shanghai Commercial Bank (3) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 36,563 |  | 45,000
Secured Long-Term Loan from Shanghai Commercial Bank (4) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from September 20, 2024 to March 15, 2028 with monthly interest payments. |  |
Secured Long-Term Loan from Shanghai Commercial Bank (4) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 9,100 |  |
Secured Long-Term Loan from CTBC Bank [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable semi-annually from September 25, 2023 to September 25, 2028 with monthly interest payments. Interest-only payment for the first and the second year. |  |
Secured Long-Term Loan from CTBC Bank [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 131,750 |  | 131,750
Unsecured Long-Term Loan from Bank of China [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable semi-annually from June 24, 2023 to June 24, 2026 with quarterly interest payments. |  |
Unsecured Long-Term Loan from Bank of China [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 1,237,490 |  | 1,515,790
Unsecured Long-Term Loan from Bank of Taiwan (1) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from March 24, 2023 to December 24, 2025 with monthly interest payments. |  |
Unsecured Long-Term Loan from Bank of Taiwan (1) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 666,666 |  | 1,333,333
Unsecured Long-Term Loan from Bank of Taiwan (2) [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from November 24, 2026 to November 24, 2028 with monthly interest payments. |  |
Unsecured Long-Term Loan from Bank of Taiwan (2) [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 2,000,000 |  | 0
Unsecured Long-Term Loan from Mega International Commercial Bank [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from April 10, 2024 to March 15, 2031 with monthly interest payments. Interest-only payment for the first three years. |  |
Unsecured Long-Term Loan from Mega International Commercial Bank [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 77,250 |  | 0
Unsecured Long-Term Loan from Taiwan Cooperative Bank (1) [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from April 10, 2024 to March 15, 2031 with monthly interest payments. Interest-only payment for the first and the second year. |  |
Unsecured Long-Term Loan from Taiwan Cooperative Bank (1) [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 115,970 |  | 0
Unsecured Long-Term Loan from Taiwan Cooperative Bank (2) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable quarterly from July 17, 2027 to July 17, 2029 with monthly interest payments. |  |
Unsecured Long-Term Loan from Taiwan Cooperative Bank (2) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 3,000,000 |  | 0
Unsecured Long-Term Loan from Eastern International Bank [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable monthly from April 10, 2024 to March 15, 2029 with monthly interest payments. Interest-only payment for the first and the second year. |  |
Unsecured Long-Term Loan from Eastern International Bank [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 59,380 |  | 0
Unsecured Revolving Loan from First Commercial Bank (1) (Note A) [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Settlement due on July 13, 2028 with monthly interest payments. |  |
Unsecured Revolving Loan from First Commercial Bank (1) (Note A) [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 0 |  | 800,000
Unsecured Revolving Loan from First Commercial Bank (2) (Note B) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Settlement due on August 22, 2029 with monthly interest payments. |  |
Unsecured Revolving Loan from First Commercial Bank (2) (Note B) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 800,000 |  | 0
Unsecured Revolving Loan from Yuanta Commercial Bank (Note C) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable annually from March 2, 2023 to March 2, 2026 with monthly interest payments. |  |
Unsecured Revolving Loan from Yuanta Commercial Bank (Note C) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 2,000,000 |  | 3,000,000
Unsecured Revolving Loan from CTBC Bank (Note D) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Settlement due on July 20, 2025 with monthly interest payments. |  |
Unsecured Revolving Loan from CTBC Bank (Note D) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 0 |  | 4,000,000
Unsecured Revolving Loan from Mega International Commercial Bank (Note E) [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable semi-annually from November 28, 2025 to May 28, 2028 with monthly interest payments. |  |
Unsecured Revolving Loan from Mega International Commercial Bank (Note E) [Member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 3,000,000 |  | 0
Unsecured Revolving Loan from Taipei Fubon Bank (Note F) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Repayable annually from January 20, 2026 to January 20, 2029 with monthly interest payments. |  |
Unsecured Revolving Loan from Taipei Fubon Bank (Note F) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 3,000,000 |  | 0
Unsecured Revolving Loan from DBS Bank (Note G) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Settlement due on December 25, 2029 with monthly interest payments. |  |
Unsecured Revolving Loan from DBS Bank (Note G) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 4,700,000 |  | 0
Unsecured Revolving Loan from DBS Bank (Taiwan) (Note H) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Settlement due on December 13, 2029 with monthly interest payments. |  |
Unsecured Revolving Loan from DBS Bank (Taiwan) (Note H) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 4,000,000 |  | 0
Unsecured Revolving Loan from Australia and New Zealand Bank (Note I) [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Redemption | Settlement due on September 26, 2029 with monthly interest payments. |  |
Unsecured Revolving Loan from Australia and New Zealand Bank (Note I) [member] | Cost [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Long-term loans | $ 1,300,000 |  | $ 0

X
- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard -URIDate 2024-03-27 + Details
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