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Note 28 - Operating Leases (Details Textual) - BRL (R$)
R$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Statement Line Items [Line Items]      
Total lease and sublease payments recognised as expense R$ 586.8 R$ 600.7 R$ 483.1