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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