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Note 31 - Non-cash Items - Investment and Financing Activities Not Involving Cash (Details) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Statement Line Items [Line Items] |  |  |
Acquisition of investments payables |  |  | R$ 208.7
Cash financing cost other than interests | (142.2) | 42.3 | 37.7
PERT 2017 |  | 199.7 |
Fair value of options granted on subsidiary | (166.8) | 221.8 | 205.1
Exchange transaction of shareholdings | 36.5 |  |
Effect of application of IAS 29 (hyperinflation) | 32.9 |  |
Others | R$ 0.8 |  |

X
- Definition The acquisition of investments payables in a non-cash transaction. + References No definition available. + Details
Name: | abev_NoncashItemsAcquisitionOfInvestmentsPayables
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cash financing cost other than interests in a non-cash transaction. + References No definition available. + Details
Name: | abev_NoncashItemsCashFinancingCostOtherThanInterests
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of adjustment related to the application of IAS 29. + References No definition available. + Details
Name: | abev_NoncashItemsEffectOfApplicationOfIAS29
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The value exchanged in a transaction of shareholdings. + References No definition available. + Details
Name: | abev_NoncashItemsExchangeTransactionOfShareholdings
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The fair value of options that granted on subsidiary. + References No definition available. + Details
Name: | abev_NoncashItemsFairValueOfOptionsGrantedOnSubsidiary
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The non-cash adjustment for the federal tax amnesty program. + References No definition available. + Details
Name: | abev_NoncashItemsFederalTaxAmnestyProgram
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other non-cash items. + References No definition available. + Details
Name: | abev_NoncashItemsOthers
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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