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Note 20 - Cash and Cash Equivalents - Components of Cash and Cash Equivalents (Details) - BRL (R$)
R$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement Line Items [Line Items]        
Short term bank deposits (i) [1] R$ 5,992.8 R$ 4,688.5    
Current bank accounts 4,875.7 5,077.1    
Cash 595.0 588.9    
Cash and cash equivalents 11,463.5 10,354.5    
Bank overdrafts (1.8)    
Cash and cash equivalents less bank overdraft [2] R$ 11,463.5 R$ 10,352.7 R$ 7,876.8 R$ 13,617.7
[1] The balance refers mostly to Bank Deposit Certificates - CDB, high liquidity, which are readily convertible into known amounts of cash and which are subject to an insignificant risk of change in value.
[2] Net of bank overdrafts.