XML 180 R162.htm IDEA: XBRL DOCUMENT v3.22.1

Significant Operation Losses - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019 TWD ($)
Significant operation losses [line items]
Estimated loss from unqualified photoresist materials	$ 3,400.0

X

- Definition

Estimated loss from unqualified photoresist materials.

+ References

No definition available.

+ Details

Name:	tsm_EstimatedLossFromUnqualifiedPhotoresistMaterials
Namespace Prefix:	tsm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Significant operation losses [line item].

+ References

No definition available.

+ Details

Name:	tsm_SignificantOperationLossesLineItems
Namespace Prefix:	tsm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration