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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: |