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Marketable Securities (Tables)
 12 Months Ended
Dec. 31, 2018
Text block [abstract]  
Marketable Securities
     2018      2017  

Investments

      

Current

      

Bank certificates of deposit (CDBs) (1)

      —          3  

Financial Notes (LFs) – Banks (2)

      435        303  

Treasury Financial Notes (LFTs) (3)

      254        740  

Debentures (4)

      11        11  

Others

      4        1  
  

 

 

     

 

 

  
     704        1,058  

Non-current

      

Financial Notes – Banks (2)

      109        —  

Debentures (4)

      —          30  
  

 

 

     

 

 

  
     109        30  
  

 

 

     

 

 

  
     813        1,088  
  

 

 

     

 

 

  

 

(1)

Bank Certificates of Deposit (Certificados de Depósito Bancário, or CDBs), were remunerated in 2018 at 80% of the Interbank Rate for Interbank Certificates of Deposit, Certificados de Depósito Inter-bancário – CDIs (100.25% to 105.25% in 2017).
(2)

Bank Financial Notes (Letras Financeiras, or LFs) are fixed-rate fixed-income securities, issued by banks and that accrued interest a percentage of the CDI rate published by Cetip. The LFs had remuneration rates varying between 102% and 111.25% of the CDI rate in 2018 (102.01% to 112% in 2017).
(3)

Treasury Financial Notes (LFTs) are fixed-rate securities, their yield follows the daily changes in the Selic rate between the date of purchase and the date of maturity.
(4)

Debentures are medium and long term debt securities, which give their holders a right of credit against the issuing company. The debentures have remuneration varying from 104.25% to 151% of the CDI Rate in 2018 (104.25% to 161.54% of CDI in 2017).