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Income Statements - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Profit or loss [abstract]      
Net operating revenue R$ 17,797,541 R$ 17,983,654 R$ 16,085,094
Operating costs (11,179,667) (10,137,637) (9,086,456)
Gross profit 6,617,874 7,846,017 6,998,638
Selling expenses (751,286) (803,404) (693,480)
Allowance for doubtful accounts (444,826) (128,099) (166,727)
Administrative expenses (1,051,181) (1,187,844) (996,877)
Other operating income (expenses), net 107,656 (18,748) 28,591
Equity results of investments in affiliaties 14,136 3,701 6,510
Profit from operations before finance income (expenses) and income tax and social contribution 4,492,373 5,711,623 5,176,655
Financial expenses (1,324,759) (1,173,425) (807,967)
Financial revenues 336,731 372,842 446,302
Exchange result, net (2,178,343) (233,098) (902,671)
Financial result, net (3,166,371) (1,033,681) (1,264,336)
Profit before income tax and social contribution 1,326,002 4,677,942 3,912,319
Income tax and social contribution      
Current (460,721) (1,155,463) (852,655)
Deferred 108,037 (154,962) (224,596)
Income tax and social contribution, total (352,684) (1,310,425) (1,077,251)
Profit for the year R$ 973,318 R$ 3,367,517 R$ 2,835,068
Earnings per share - basic and diluted (in reais) R$ 1.42 R$ 4.93 R$ 4.15