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Other Operating Income and Expenses, Net | 12 Months Ended
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Dec. 31, 2017
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Other Operating Income and Expenses, Net |
26. | OTHER OPERATING INCOME AND EXPENSES, NET
|  | Years Ended December 31 |
|  | 2015 |  |  | 2016 |  |  | 2017 |
|  | NT$ |  |  | NT$ |  |  | NT$ |
|  | (In Millions) |  |  | (In Millions) |  |  | (In Millions) |
Gain (loss) on disposal or retirement of property, plant and equipment, net |  | $ | 433.5 |  |  | $ | 46.5 |  |  | $ | (1,097.9 | )
Impairment loss on property, plant and equipment |  |  | (2,545.6 | ) |  |  | — |  |  |  | — |
Gain from lease agreement modification |  |  | 430.0 |  |  |  | — |  |  |  | — |
Others |  |  | (198.5 | ) |  |  | (16.7 | ) |  |  | (267.6 | )
|  | $ | (1,880.6 | ) |  | $ | 29.8 |  |  | $ | (1,365.5 | )

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- Definition The disclosure of other operating income or expense. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
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