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Note 9 - Payroll and Related Benefits - Payroll and Related Benefits Income Statement Presentation (Details) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement Line Items [Line Items]      
Cost of sales R$ 1,714.8 R$ 1,912.3 R$ 1,890.2
Distribution expenses 791.5 780.8 722.1
Sales and marketing expenses 1,096.8 989.8 980.8
Administrative expenses 1,470.1 970.3 1,154.0
Net finance cost 42.9 95.9 27.5
Exceptional item 6.9 (2.9)
R$ 5,123.0 R$ 4,746.2 R$ 4,774.6