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Contents of Significant Accounts - Non-Operating Income and Expenses (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2023 TWD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($)
Disclosure of detailed information about financial instruments [line items] |  |  |  |
Gain (Loss) on valuation of financial assets and liabilities at fair value through profit or loss | $ (40,553) |  | $ (1,247,962) | $ 2,892,470
Gain (Loss) on disposal of investments accounted for under the equity method | 163,395 |  | 50,553 | (16,388)
Others | 100,254 |  | 62,869 | (2,009,952)
Total other gains and losses | 223,096 | $ 7,286 | (1,134,540) | 866,130
Interest expenses, bonds payable | 444,424 |  | 486,079 | 437,055
Interest expenses, bank loans | 833,548 |  | 1,100,840 | 1,285,708
Interest expenses, lease liabilities | 179,367 |  | 166,928 | 145,187
Interest expenses, others | 16,390 |  | 31,464 | 139
Financial expenses | 96,645 |  | 81,018 | 94,841
Total finance costs | $ 1,570,374 | $ 51,286 | $ 1,866,329 | $ 1,962,930

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- Definition The gains (losses) on disposals of investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 98 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_98_d&doctype=Standard -URIDate 2023-03-23 + Details
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