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Other Payables - Summary of Other Payables (Detail) $ in Millions, $ in Millions | Dec. 31, 2017 TWD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 TWD ($)
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Trade And Other Current Payables [Abstract] |  |  |
Accrued salary and compensation | $ 9,748 |  | $ 9,770
Payables to contractors | 2,058 |  | 2,396
Accrued compensation to employees and remuneration to directors and supervisors | 1,949 |  | 2,015
Payables to equipment suppliers | 1,690 |  | 1,623
Accrued franchise fees | 1,248 |  | 1,326
Amounts collected for others | 1,203 |  | 1,407
Accrued maintenance costs | 1,081 |  | 1,062
Others | 6,024 |  | 6,819
Total | $ 25,001 | $ 844 | $ 26,418

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- Definition Accrued franchise fees. + References No definition available. + Details
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- Definition The amount of accruals for employee benefits (other than termination benefits) that are expected to be settled wholly within twelve months after the end of the annual reporting period in which the employees render the related services. [Refer: Accruals classified as current] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2016-01-13 -Paragraph 78 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_78&doctype=Standard -URIDate 2016-03-31 + Details
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