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Significant Accounting Policies - Summary of Amortization of Intangible Assets With Limited Useful Life (Detail) | 12 Months Ended
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Dec. 31, 2017
Development costs [member] |
Disclosure of detailed information about intangible assets [line items] |
Estimated Useful Life | 5 - 6 years
Software [member] |
Disclosure of detailed information about intangible assets [line items] |
Estimated Useful Life | 6 years
Frequency usage rights [member] |
Disclosure of detailed information about intangible assets [line items] |
Estimated Useful Life | 5 - 10 years
Others [member] |
Disclosure of detailed information about intangible assets [line items] |
Estimated Useful Life | 2 - 50 years

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The useful lives or amortisation rates used for intangible assets other than goodwill. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2017-01-01 -Paragraph 118 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2017-03-01&anchor=para_118_a&doctype=Standard -URIDate 2017-03-09 + 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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