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Share-based Payment - Information about Outstanding Employee Stock Options (Detail) Stock_options in Millions | 12 Months Ended
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Dec. 31, 2015 TWD ($) Stock_options
Disclosure of terms and conditions of share-based payment arrangement [abstract] |
Balance, beginning of year, Number of stock options | Stock_options | 0.7
Options exercised, Number of stock options | Stock_options | (0.7)
Balance, beginning of year, Weighted average exercise price | $ | $ 47.2
Option exercised, Weighted average exercise price | $ | $ 47.2

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- Definition The number of share options exercised in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2017-01-01 -Paragraph 45 -Subparagraph b -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_45_b_iv&doctype=Standard -URIDate 2017-03-09 + Details
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