XML 119 R106.htm IDEA: XBRL DOCUMENT
v3.19.1

Property and Equipment - Summary of Estimated Useful Lives of Property and Equipment (Detail) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Cable and wire facilities [Member] | Bottom Of Range [Member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 10 years | 10 years
Cable and wire facilities [Member] | Top of range [member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 15 years | 15 years
Central office equipment [Member] | Bottom Of Range [Member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 3 years | 3 years
Central office equipment [Member] | Top of range [member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 15 years | 15 years
Cellular facilities [Member] | Bottom Of Range [Member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 3 years | 3 years
Cellular facilities [Member] | Top of range [member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 10 years | 10 years
Building [Member] | Bottom Of Range [Member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 25 years | 25 years
Building [Member] | Top of range [member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 50 years | 50 years
Vehicles, aircraft, furniture and other network equipment [Member] | Bottom Of Range [Member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 3 years | 3 years
Vehicles, aircraft, furniture and other network equipment [Member] | Top of range [member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 7 years | 7 years
Information origination and termination equipment [Member] | Bottom Of Range [Member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 3 years | 3 years
Information origination and termination equipment [Member] | Top of range [member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 5 years | 5 years
Leasehold improvements [Member] | Bottom Of Range [Member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 3 years | 3 years
Leasehold improvements [Member] | Top of range [member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 5 years | 5 years
Land improvements [Member] |  |
Disclosure Of Property Plant And Equipment [Line Items] |  |
Estimated useful lives of assets | 10 years | 10 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 depreciation rates used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2018-01-01 -Paragraph 73 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_73_c&doctype=Standard -URIDate 2018-03-16 + 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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- Details
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Data Type: | na
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- 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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