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EXPENSES BY NATURE - Classified by nature (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
EXPENSES BY NATURE      
Depreciation and amortisation R$ (2,658,561) R$ (2,499,104) R$ (2,074,295)
Labor expenses (7,249,811) (5,867,265) (5,175,373)
Raw material and consumption material (43,720,989) (26,945,440) (25,890,618)
Freight (3,898,360) (2,572,293) (2,300,439)
Other expenses/income, net (1,585,863) (476,818) (1,002,301)
Eletrobras compulsory loan recovery 1,391,280 0 0
Results in operations with subsidiary and joint ventures (162,913) 0 0
Impairment of non-financial assets 0 (411,925) 0
Total Expenses R$ (57,885,217) R$ (38,772,845) R$ (36,443,026)