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Note 11 - Finance Cost and Income (Details Textual) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Statement Line Items [Line Items] |  |
Net finance cost, realization of exchange value | R$ 179.1 | R$ 835.7
Net finance cost, related to PERT 2017 |  | R$ 141.0

X
- Definition Represents the amount of net finance cost, realization of exchange value. + References No definition available. + Details
Name: | abev_NetFinanceCostRealizationOfExchangeValue
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net finance costs from the realization of exchange value related to PERT 2017. + References No definition available. + Details
Name: | abev_NetFinanceCostRelatedToPERT2017
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | abev_StatementLineItems
Namespace Prefix: | abev_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration