XML 149 R113.htm IDEA: XBRL DOCUMENT v3.22.1
Changes in these assets are as follows: (Details) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
IfrsStatementLineItems [Line Items]      
Beginning balance R$ 664 R$ 704 R$ 745
Amortization (40) (40) (41)
Ending balance 609 664 704
Disposals (15)    
Retiro baixo [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance 30 31 32
Amortization (1) (1) (1)
Ending balance 29 30 31
Madeira energia [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance 16 17 18
Amortization (1) (1) (1)
Ending balance 16 17
Disposals (15)    
Lightger [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance 78 81 84
Amortization (2) (3) (3)
Ending balance 76 78 81
Alianca geracao [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance 328 353 378
Amortization (25) (25) (25)
Ending balance 303 328 353
Alianca norte [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance 49 51 53
Amortization (2) (2) (2)
Ending balance 47 49 51
Taesa [member]      
IfrsStatementLineItems [Line Items]      
Beginning balance 163 171 180
Amortization (9) (8) (9)
Ending balance R$ 154 R$ 163 R$ 171