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29 Provisions for Legal Claims and Contingent Liabilities (Tables)
 12 Months Ended
Dec. 31, 2019
Provisions For Legal Claims And Contingent Liabilities [Abstract]  
Schedule of changes in provisions for litigation

29.1.1     Changes in provision for legal claims rated as involving probable losses

                 
    Income        
  Balances as of Provision for litigations Construction cost Additions  (Reversals)   Transfers/ Balances as of
  January 1, 2019 Additions Reversals Additions/(Rev.) to assets Discharges Others December 31, 2019
Tax                
Cofins (a)    102,603    4,307   (2,626)    - - - -    104,284
Others (b)   54,494    4,841 (14,258)    - -   (1,258) 27,687   71,506
     157,097    9,148 (16,884)    - -   (1,258) 27,687    175,790
Labors (c)    612,782   194,550 (23)    - - (134,247) -    673,062
Employee benefits (d)   85,199 27,426 (18,747)    - -   (7,581) -   86,297
Civil                
Civil and administrative claims (e)    492,934   101,438 (36,271)    - - (221,139) -    336,962
Easements (f)    118,147   711   (3,470)    12,456    1,012   (1,891) 45    127,010
Expropriations and property (g)    116,401    2,844   (4,501) (2,935)    7,109 (161)     -    118,757
Customers (h) 5,209   390   (643)    - - - - 4,956
Environmental (i) 3,531    1,332   (566)    - - (226)     - 4,071
     736,222   106,715 (45,451)   9,521    8,121 (223,417) 45    591,756
Regulatory (j)   73,473    7,926   (546)    - -   (1,045) -   79,808
     1,664,773   345,765 (81,651)   9,521    8,121 (367,548) 27,732    1,606,713
Noncurrent    1,664,773                1,606,713

 

    Income        
  Balance as of January 01,2018 Provision for litigations Construction cost Asset additions Discharges Transfers / Others Balance as of December 31,2018
  Additions Reversals Additions/ (Rev.)
Tax                
Cofins (a)   79,748   22,855   -      -      -      -    -     102,603
Others (b)   58,793 7,722    (26,695)    -      -      (6,325) 20,999 54,494
  138,541   30,577    (26,695)    -      -      (6,325) 20,999   157,097
Labors (c) 475,631 232,195   (2,400)    -      -   (92,644)   -     612,782
Employee benefits (d)   89,439   11,089    (10,062)    -      -      (5,267)   -   85,199
Civil                
Civil and administrative claims (e) 527,613 119,633 (118,652)    -      -   (36,005)   345   492,934
Easements (f) 110,936 2,179 (305)    (4,600) 8,477    (1,474)    2,934   118,147
Expropriations and property (g)   95,627 156   (1,350) 4,032   18,168    (232)   -     116,401
Consumers (h) 8,377 464   (1,469)    -      -      (2,163)   -      5,209
Environmental (i) 1,584 2,570 (562)    -      -   (61)   -      3,531
  744,137 125,002 (122,338)    (568)   26,645 (39,935)    3,279   736,222
Regulatory (j)   64,316 9,296 (139)    -      -      -     -   73,473
  1,512,064 408,159 (161,634)    (568)   26,645   (144,171) 24,278   1,664,773
Current 112,000               -  
Noncurrent 1,400,064               1,664,773
Schedule of contingent liabilities

The following information concerns the nature of contingent liabilities of the Company and potential losses arising therefrom: 

  12.31.2019 12.31.2018
Tax (a)    628,546    568,512
Labor (29.1.2 - c)    419,917    311,777
Employee benefits (29.1.2 - d)   21,338 19,099
Civil (d)    1,273,928    1,286,466
Regulatory (e)    1,141,420    866,836
     3,485,149    3,052,690