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Contents of Significant Accounts - Movement of Deferred Tax (Detail) - TWD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Changes in deferred tax assets and liabilities [Line Items]
Beginning Balance	$ 1,663,800	$ 3,154,352
Amounts recognized in profit or loss during the period	(2,102,563)	(2,330,797)
Amounts recognized in other comprehensive income (loss)	(23,967)	852,567	$ (387,138)
Amounts recognized in equity	(1,117)	(2,720)
Exchange adjustments	(37,706)	(9,602)
Ending Balance	$ (501,553)	$ 1,663,800	$ 3,154,352

X

- Definition

The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]

+ References

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-IssueDate 2023-01-01
-Paragraph 81
-Subparagraph g
-Clause ii
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-URIDate 2023-03-23

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X

- Definition

The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]

+ References

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-Name IAS
-Number 12
-IssueDate 2023-01-01
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X

- Definition

The amount of deferred tax related to items credited (charged) directly to equity. [Refer: Deferred tax expense (income)]

+ References

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-Name IAS
-Number 12
-IssueDate 2023-01-01
-Paragraph 81
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X

- Definition

The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income]

+ References

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-Name IAS
-Number 12
-IssueDate 2023-01-01
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- Definition

The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]

+ References

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- Definition

Changes in deferred tax assets and liabilities [Line Items]

+ References

No definition available.

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