XML 138 R122.htm IDEA: XBRL DOCUMENT v3.19.1
14. Prepaid Expenses (Details 2) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]      
Asset value to recover as renegotiation of GSF, beginning R$ 73,778 R$ 94,095  
Amortization (22,497) (20,317)  
Transfers 0 0  
Asset value to recover as renegotiation of GSF, ending 51,281 73,778  
Risk premium to be amortized - prepaid expenses 12,574 28,033 R$ 40,909
Grant extension period - intangible 38,707 45,745 R$ 53,186
Risk premium - current asset      
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]      
Asset value to recover as renegotiation of GSF, beginning 15,459 15,459  
Amortization (15,459) (12,876)  
Transfers 9,394 12,876  
Asset value to recover as renegotiation of GSF, ending 9,394 15,459  
Risk premium - noncurrent asset      
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]      
Asset value to recover as renegotiation of GSF, beginning 12,574 25,450  
Amortization 0 0  
Transfers (9,394) (12,876)  
Asset value to recover as renegotiation of GSF, ending 3,180 12,574  
Intangible      
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]      
Asset value to recover as renegotiation of GSF, beginning 45,745 53,186  
Amortization (7,038) (7,441)  
Transfers 0 0  
Asset value to recover as renegotiation of GSF, ending 38,707 45,745  
Liability deduction with CCEE      
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]      
Asset value to recover as renegotiation of GSF, beginning R$ 0 0  
Amortization   0  
Transfers   0  
Asset value to recover as renegotiation of GSF, ending   R$ 0