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Share-based Payment (Tables) | 12 Months Ended
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Dec. 31, 2017
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Information about Outstanding Employee Stock Options | Information about the TSMC’s outstanding employee stock options is described as follows:
|  | Number of Stock Options (In Millions) |  |  | Weighted- average Exercise Price (NT$) |
Year ended December 31, 2015 |  |  |  |  |  |  |  |
Balance, beginning of year |  |  | 0.7 |  |  | $ | 47.2 |
Options exercised |  |  | (0.7 | ) |  |  | 47.2 |
Balance, end of year |  |  | — |  |  |  | — |
Balance exercisable, end of year |  |  | — |  |  |  | — |

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- Definition The disclosure of the number and weighted average exercise prices of share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2017-01-01 -Paragraph 45 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_45_b&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Text block1 [abstract] + References No definition available. + Details
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