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Operating Context (Tables)
 12 Months Ended
Dec. 31, 2018
Text block [abstract]  
Summary of Balance Sheet of Cemig Telecom Used for the Merger

The balance sheet of Cemig Telecom used for the merger, as of March 31, 2018, is as follows:

 

     Mar. 31, 2018  

Asset

   

Current

      25  

Non-current

   

Non-current assets

      15  

Investments – Equity method

      17  

Property, plant and equipment

      272  

Intangible assets

      12  
  

 

 

  
     316  
  

 

 

  

Total assets

      341  
  

 

 

  

 

     Mar. 31, 2018  
Liabilities   

Current

      34  

Non-current

      55  
     —    
     —    
     —    
     —    
Equity      252  
  

 

 

  
Total liabilities and equity      341