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Note 23 - Employee Benefits - Plan Assets Components (Details)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Plan assets, government bonds [member]
Statement Line Items [Line Items]
Plan assets percentage, rated	50.00%	50.00%	41.00%
Plan assets percentage, unrated
Plan assets percentage	50.00%	50.00%	41.00%
Plan assets, corporate bonds [member]
Statement Line Items [Line Items]
Plan assets percentage, rated	7.00%	7.00%	13.00%
Plan assets percentage, unrated
Plan assets percentage	7.00%	7.00%	13.00%
Plan assets, equity instruments [member]
Statement Line Items [Line Items]
Plan assets percentage, rated	14.00%	14.00%	18.00%
Plan assets percentage, unrated
Plan assets percentage	14.00%	14.00%	18.00%
Plan assets, cash [member]
Statement Line Items [Line Items]
Plan assets percentage, rated			1.00%
Plan assets percentage, unrated
Plan assets percentage			1.00%
Plan assets, others [member]
Statement Line Items [Line Items]
Plan assets percentage, rated	29.00%	29.00%	27.00%
Plan assets percentage, unrated
Plan assets percentage	29.00%	29.00%	27.00%

X

- Definition

The component percentage of the plan assets of a defined benefit plan.

+ References

No definition available.

+ Details

Name:	abev_PlanAssetsOfDefinedBenefitPlanComponentPercentage
Namespace Prefix:	abev_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The component percentage of the rated plan assets of a defined benefit plan.

+ References

No definition available.

+ Details

Name:	abev_RatedPlanAssetsOfDefinedBenefitPlanComponentPercentage
Namespace Prefix:	abev_
Data Type:	num:percentItemType
Balance Type:	na
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

X

- Definition

The component percentage of the unrated plan assets of a defined benefit plan.

+ References

No definition available.

+ Details

Name:	abev_UnratedPlanAssetsOfDefinedBenefitPlanComponentPercentage
Namespace Prefix:	abev_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	ifrs-full_NetDefinedBenefitLiabilityAssetAxis=abev_PlanAssetsGovernmentBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_NetDefinedBenefitLiabilityAssetAxis=abev_PlanAssetsCorporateBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_NetDefinedBenefitLiabilityAssetAxis=abev_PlanAssetsEquityInstrumentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_NetDefinedBenefitLiabilityAssetAxis=abev_PlanAssetsCashMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_NetDefinedBenefitLiabilityAssetAxis=abev_PlanAssetsOthersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: