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Note 29 - Collateral and Contractual Commitments with Suppliers, Advances From Customers and Other (Details Textual) - BRL (R$) R$ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Statement Line Items [Line Items] |  |
Collateral and other commitments | R$ 1,992.7 | R$ 1,449.0
Cash guarantees | 574.7 | 551.0
Guarantees held for derivative instruments | R$ 653.8 | R$ 606.3

X
- Definition The amount recorded for cash guarantees. + References No definition available. + Details
Name: | abev_CashGuarantees
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount recorded for collateral and other commitments outstanding. + References No definition available. + Details
Name: | abev_CollateralAndOtherCommitments
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of guarantees held for derivative instrument requirements. + References No definition available. + Details
Name: | abev_GuaranteesHeldForDerivativeInstruments
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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