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CONTINGENT LIABILITIES (Brazilian Federal Communication Agency - Anatel) (Details) - 1 months ended Dec. 31, 2016 - Unfavorable Regulatory Action FUST Contribution [Member] R$ in Millions, $ in Millions | BRL (R$) | USD ($)
--- | --- | ---
Loss Contingencies [Line Items] |  |
Additional tax assessment | $ |  | $ 5.6
Brazil, Brazil Real |  |
Loss Contingencies [Line Items] |  |
Additional tax assessment | R$ | R$ 28.0 |

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