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Note 8 - Exceptional Items (Details Textual) - BRL (R$) R$ in Millions |  | 1 Months Ended
--- | --- | ---
Dec. 01, 2017 | Dec. 31, 2017
Statement Line Items [Line Items] |  |
Finance costs, exceptional items |  | R$ 977
Tax income (expense), exceptional items | R$ (2,800) |

X
- Definition The amount of costs associated with financing activities of the entity related to exceptional items. + References No definition available. + Details
Name: | abev_FinanceCostsExceptionalItems
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax that relate to continuing operations regarding exceptional items. + References No definition available. + Details
Name: | abev_IncomeTaxExpenseContinuingOperationsExceptionalItems
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