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Significant Loss from Disaster - Additional Information (Detail) - TWD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Disclosure of types of insurance contracts [line items] |  |
Earthquake losses |  | $ 2,492.1
Events After Reporting Period [member] |  |
Disclosure of types of insurance contracts [line items] |  |
Earthquake losses | $ 2,386.8 |
Insurance recovery of earthquake losses | $ 105.3 |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
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Period Type: | duration

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- Definition Insurance recovery of loss from earthquake. + References No definition available. + Details
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Namespace Prefix: | tsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Loss from earthquake. + References No definition available. + Details
Name: | tsm_LossFromEarthQuake
Namespace Prefix: | tsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |