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Long-term assets - E.1.1. Accounting for intangible assets (Details) | 12 Months Ended
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Dec. 31, 2018
Disclosure of detailed information about intangible assets [line items] |
Period for which item is expensed (less than) | 1 year
New fiber cable |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 15 years
Bottom of range | Trademarks |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 1 year
Bottom of range | Customer lists |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 4 years
Bottom of range | IRUs |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 12 years
Top of range | Trademarks |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 15 years
Top of range | Customer lists |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 20 years
Top of range | IRUs |
Disclosure of detailed information about intangible assets [line items] |
Intangible assets useful lives | 15 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 Intangible Assets Other Than Goodwill, Period For Which Items are Expensed + References No definition available. + 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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