XML 126 R105.htm IDEA: XBRL DOCUMENT v3.22.1

Non-current Financial Assets at Fair Value Through Other Comprehensive Income - Additional Information (Detail)	Dec. 31, 2021 TWD ($)
Financial assets at fair value through other comprehensive income [abstract]
Financial assets at fair value through other comprehensive income were pledged	$ 0

X

- References

No definition available.

+ Details

Name:	ifrs-full_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Financial assets at fair value through other comprehensive income pledged.

+ References

No definition available.

+ Details

Name:	imos_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomePledged
Namespace Prefix:	imos_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant