XML 154 R147.htm IDEA: XBRL DOCUMENT v3.19.1
Property, Plant and Equipment - Summary of Movement in Property, Plant and Equipment (Detail) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]      
Property plant and equipment, Beginning balance R$ 2,762 R$ 3,775 R$ 3,940
Additions 77 83 120
Jaguara, Miranda and Volta Grande Plants   (876)  
Disposals (33) (27) (56)
Depreciation (175) (205) (234)
Transfer to Held for sale (256)    
Adjustment for business combination 296    
Transfers / capitalizations (9) 12 5
Property plant and equipment, Ending balance 2,662 2,762 3,775
Investment Property Completed [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property plant and equipment, Beginning balance 2,656 3,637 3,750
Jaguara, Miranda and Volta Grande Plants   (876)  
Disposals (11) (10) (43)
Depreciation (175) (205) (234)
Transfer to Held for sale (256)    
Adjustment for business combination 296    
Transfers / capitalizations 32 110 164
Property plant and equipment, Ending balance 2,542 2,656 3,637
Investment Property Completed [member] | Land [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property plant and equipment, Beginning balance 211 279 279
Jaguara, Miranda and Volta Grande Plants   (61)  
Disposals   (1)  
Depreciation (2) (6)  
Transfers / capitalizations 6    
Property plant and equipment, Ending balance 215 211 279
Investment Property Completed [member] | Reservoirs Dams And Water Courses [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property plant and equipment, Beginning balance 1,234 1,761 1,830
Jaguara, Miranda and Volta Grande Plants   (441)  
Disposals (2) (4)  
Depreciation (82) (85) (99)
Transfers / capitalizations   3 30
Property plant and equipment, Ending balance 1,150 1,234 1,761
Investment Property Completed [member] | Buildings Works And Improvements [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property plant and equipment, Beginning balance 331 418 437
Jaguara, Miranda and Volta Grande Plants   (69)  
Disposals     (1)
Depreciation (19) (20) (23)
Transfers / capitalizations 2 2 5
Property plant and equipment, Ending balance 314 331 418
Investment Property Completed [member] | Machinery And Equipment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property plant and equipment, Beginning balance 874 1,172 1,192
Jaguara, Miranda and Volta Grande Plants   (305)  
Disposals (9) (5) (42)
Depreciation (70) (93) (110)
Transfer to Held for sale (256)    
Adjustment for business combination 296    
Transfers / capitalizations 19 105 132
Property plant and equipment, Ending balance 854 874 1,172
Investment Property Completed [member] | Vehicles [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property plant and equipment, Beginning balance 3 4 8
Depreciation (2) (1) (2)
Transfers / capitalizations 4   (2)
Property plant and equipment, Ending balance 5 3 4
Investment Property Completed [member] | Furniture and fixtures [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property plant and equipment, Beginning balance 3 3 4
Transfers / capitalizations 1   (1)
Property plant and equipment, Ending balance 4 3 3
Investment Property In Progress [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property plant and equipment, Beginning balance 106 138 190
Additions 77 83 120
Disposals (22) (17) (13)
Transfers / capitalizations (41) (98) (159)
Property plant and equipment, Ending balance R$ 120 R$ 106 R$ 138