XML 84 R63.htm IDEA: XBRL DOCUMENT
v3.22.1

Accounts payable (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Disclosure Of Detailed Information Of Trade And Other Payable Explanatory [Abstract] |
Summary of Accounts Payable |
|  | December 31, 2020 |  |  | December 31, 2021 |
|  | NT$000 |  |  | NT$000 |
Accounts payable |  |  | 766,805 |  |  |  | 765,403 |
Estimated accounts payable |  |  | 200,016 |  |  |  | 246,988 |
|  |  | 966,821 |  |  |  | 1,012,391 |

X
- Definition Disclosure Of Detailed Information Of Trade And Other Payable Explanatory + References No definition available. + Details
Name: | imos_DisclosureOfDetailedInformationOfTradeAndOtherPayableExplanatoryAbstract
Namespace Prefix: | imos_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of detailed information of trade and other payable. + References No definition available. + Details
Name: | imos_DisclosureOfDetailedInformationOfTradeAndOtherPayableExplanatoryTableTextBlock
Namespace Prefix: | imos_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration