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22. LOANS, FINANCING AND DEBENTURES (Detaills 5) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about borrowings [line items]      
Beginning Balance R$ 14,777    
(-) Transaction costs 57    
(-) Discount in the issues of securities (18)    
(-) Interest paid in advance (25)    
Ending Balance 2,310 R$ 14,777  
Loans, financing and debentures [member]      
Disclosure of detailed information about borrowings [line items]      
Beginning Balance 14,777 14,772 R$ 14,398
Liabilities arising from business combination 10 [1]   163
Initial balance for consolidation purposes 14,787   14,561
Loans and financings obtained 850 4,510 2,996
(-) Transaction costs (24) (10) (16)
(-) Discount in the issues of securities   (23)  
(-) Interest paid in advance     10
Financings obtained, net   4,477 2,990
Monetary variation 187 142 134
Exchange rate variation 1,742 226 582
Financial charges provisioned 1,211 [2] 1,250 1,287
Amortization of transaction cost 15 38 33
Financial charges paid (1,212) (1,265) (1,290)
Amortization of financings (2,531) (4,883) (3,527)
Reclassification to "Other obligations" [3] (8)    
Subtotal 15,017 14,757 14,770
FIC Pampulha: Marketable securities of subsidiary companies 3 20 2
Ending Balance R$ 15,020 R$ 14,777 R$ 14,772
[1] Loans arising from business combinations due to the acquisition of the remaining equity interest in Companhia Centroeste de Minas, settled in full in August 2020.
[2] Withholding income tax on remittance of interest on Eurobonds, in the amount of R$130, was offset against PIS/Pasep and Cofins credits.
[3] Reclassification to Cemig D's customers (CMM and Serra da Fortaleza).