XML 46 R29.htm IDEA: XBRL DOCUMENT
v3.25.1

Capital Management (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Capital Management [Abstract] |
Debt to Capital Ratios | The Company’s strategy, which is unchanged for the reporting periods, is to maintain a reasonable ratio in order to raise capital with reasonable cost. The debt to capital ratios as of December 31, 2023 and 2024 were as follows:
|  | As of December 31, |
|  | 2023 |  |  | 2024 |
|  | NT$ |  |  | NT$ |
|  | (In Thousands) |  |  | (In Thousands) |
Total liabilities |  | $ | 202,859,864 |  |  | $ | 194,462,244 |
Less: Cash and cash equivalents |  |  | (132,553,615 | ) |  |  | (105,000,226 | )
Net debt |  |  | 70,306,249 |  |  |  | 89,462,018 |
Total equity |  |  | 343,716,968 |  |  |  | 365,706,711 |
Total capital |  | $ | 414,023,217 |  |  | $ | 455,168,729 |
Debt to capital ratios |  |  | 16.98% |  |  |  | 19.65% |

X
- Definition Capital management. + References No definition available. + Details
Name: | umc_CapitalManagementAbstract
Namespace Prefix: | umc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of debt to capital ratios. + References No definition available. + Details
Name: | umc_DisclosureOfDebtToCapitalRatiosExplanatory
Namespace Prefix: | umc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration