Cover	6 Months Ended
Jun. 30, 2021
Cover [Abstract]
Document Type	6-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Entity Registrant Name	Taiwan Semiconductor Manufacturing Company Ltd.
Entity Central Index Key	0001046179
Current Fiscal Year End Date	--12-31
Entity Address, Address Line One	No. 8, Li-Hsin Rd. 6
Entity Address, Address Line Two	Hsinchu Science Park
Entity Address, Country	TW
Entity File Number	001-14700

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

No definition available.

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- Definition

Cover page.

+ References

No definition available.

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- Definition

End date of current fiscal year in the format --MM-DD.

+ References

No definition available.

+ Details

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- Definition

The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

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- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:	dei_DocumentType
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- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

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- Definition

Address Line 2 such as Street or Suite number

+ References

No definition available.

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- Definition

ISO 3166-1 alpha-2 country code.

+ References

No definition available.

+ Details

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- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation 12B
-Number 240
-Section 12
-Subsection b-2

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- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

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- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation 12B
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