XML 57 R36.htm IDEA: XBRL DOCUMENT v3.22.1

Expenses by nature

12 Months Ended

Dec. 31, 2021

Text block [abstract]

Expenses by nature

31. Expenses by nature

		Year ended December 31,
		2019				2020				2021
		NT$000				NT$000				NT$000
Raw materials and supplies used			3,575,283				4,708,493				5,518,145
Employee benefit expenses			6,075,773				6,010,227				6,757,888
Depreciation expenses			3,731,914				4,175,519				4,634,112
Others			4,590,720				4,686,218				5,053,088
			17,973,690				19,580,457				21,963,233

X

- Definition

Disclosure of classification of expenses.

+ References

No definition available.

+ Details

Name:	imos_DisclosureOfClassificationOfExpensesTextBlock
Namespace Prefix:	imos_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Text block [abstract]

+ References

No definition available.

+ Details

Name:	imos_TextBlockAbstract
Namespace Prefix:	imos_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration