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REGULATORY FRAMEWORK - Universal Service Regulation (Details) - item		12 Months Ended
	Apr. 04, 2008	Dec. 31, 2017
Regulatory framework
Period within which the coverage for fixed line networks is to be extended	60 months
Telefonica
Regulatory framework
Number of members of the technical committee to be appointed by the company along with the counterparty		2
Telefonica
Regulatory framework
Period within which the coverage for fixed line networks is to be extended	60 months

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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.

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- Definition

Represents the number of members of the technical committee, which the company and the counterparty should jointly appoint as per the Decree of Universal Service Regulation.

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No definition available.

+ Details

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- Definition

Represents the period within which the coverage of the company's fixed line networks are to be extended, as per the Decree of Universal Service Regulation, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter.

+ References

No definition available.

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