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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