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Share-based Payment - Additional Information (Detail) - shares |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 06, 2005 | Oct. 29, 2003 | Jun. 25, 2002 | Dec. 31, 2017
Disclosure Of Share Based Compensation Expense [line items] |  |  |  |
Maximum term of options granted |  |  |  | 10 years
Stock Options Granted Threshold [member] | Bottom of range [member] |  |  |  |
Disclosure Of Share Based Compensation Expense [line items] |  |  |  |
Voting rights percentage |  |  |  | 50.00%
TSMC 2002 Plan [member] |  |  |  |
Disclosure Of Share Based Compensation Expense [line items] |  |  |  |
Stock option authorized to be granted |  |  | 100,000,000 |
TSMC 2003 Plan [member] |  |  |  |
Disclosure Of Share Based Compensation Expense [line items] |  |  |  |
Stock option authorized to be granted |  | 120,000,000 |  |
TSMC 2004 Plan [member] |  |  |  |
Disclosure Of Share Based Compensation Expense [line items] |  |  |  |
Stock option authorized to be granted | 11,000,000 |  |  |

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- Definition The proportion of the voting rights in a subsidiary held by the entity. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2017-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_17_b_iii&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2017-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_16_b_iii&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2017-01-01 -Paragraph 19B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_19B_c&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Disclosure of share-based compensation expense. + References No definition available. + Details
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- Definition Share-based payments stock options authorized to be granted. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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