XML 162 R144.htm IDEA: XBRL DOCUMENT v3.21.1
17 Property, Plant and Equipment (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost R$ 17,908,424 R$ 19,010,184
Property, plant and equipment, Accumulated depreciation (8,412,964) (8,418,081)
Property, plant and equipment, net 9,495,460 10,592,103
In Service [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost 17,298,078 18,437,598
Property, plant and equipment, Accumulated depreciation (8,412,964) (8,418,081)
Property, plant and equipment, net 8,885,114 10,019,517
In Service [member] | Furniture And Tools [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost 22,314 22,415
Property, plant and equipment, Accumulated depreciation (15,498) (14,466)
Property, plant and equipment, net 6,816 7,949
In Service [member] | Impairment (17.5) [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost (925,521) (961,177)
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net (925,521) (961,177)
In Service [member] | Special Obligations [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost (332) (78)
Property, plant and equipment, Accumulated depreciation 81 35
Property, plant and equipment, net (251) (43)
In Service [member] | Vehicles and Aircraft [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost 44,617 47,960
Property, plant and equipment, Accumulated depreciation (42,725) (44,876)
Property, plant and equipment, net 1,892 3,084
In Service [member] | Land [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost 490,177 490,071
Property, plant and equipment, Accumulated depreciation (38,269) (27,651)
Property, plant and equipment, net 451,908 462,420
In Service [member] | Machinery and Equipment [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost 7,644,171 8,875,458
Property, plant and equipment, Accumulated depreciation (2,619,939) (2,871,568)
Property, plant and equipment, net 5,024,232 6,003,890
In Service [member] | Reservoirs, Dams and Aqueducts [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost 8,081,989 8,082,238
Property, plant and equipment, Accumulated depreciation (4,600,598) (4,405,546)
Property, plant and equipment, net 3,481,391 3,676,692
In Service [member] | Buildings [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost 1,968,591 1,962,033
Property, plant and equipment, Accumulated depreciation (1,096,016) (1,054,009)
Property, plant and equipment, net 872,575 908,024
In Service [member] | Impairment (17.6) [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost (27,928) (81,322)
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net (27,928) (81,322)
In Progress [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost 610,346 572,586
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net 610,346 572,586
In Progress [member] | Impairment (17.5) [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost (120,308) (122,261)
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net (120,308) (122,261)
In Progress [member] | Cost [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost 734,507 700,172
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net 734,507 700,172
In Progress [member] | Impairment (17.6) [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, cost (3,853) (5,325)
Property, plant and equipment, Accumulated depreciation
Property, plant and equipment, net R$ (3,853) R$ (5,325)