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Note 29 - Collateral and Contractual Commitments with Suppliers, Advances From Customers and Other - Components of Collateral and Commitments (Details) - BRL (R$) R$ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Statement Line Items [Line Items] |  |  |
Collateral given for own liabilities |  | R$ 653.8 | R$ 606.3
Other commitments |  | 1,338.9 | 842.7
Total |  | 1,992.7 | 1,449.0
Commitments with suppliers | [1] | 12,078.6 | 11,096.3
Total |  | R$ 12,078.6 | R$ 11,096.3
[1] | Variation refers, mainly, a new contracts with a new suppliers of aluminum in 2017.

X
- Definition The amount recorded for collateral and other commitments outstanding. + References No definition available. + Details
Name: | abev_CollateralAndOtherCommitments
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount committed to suppliers. + References No definition available. + Details
Name: | abev_CommitmentsWithSuppliers
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Other commitments held for a purpose restricting the use of cash. + References No definition available. + Details
Name: | abev_OtherCommitmentsHeld
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 amount of liabilities that the entity may have to pay due to exposure. + References No definition available. + Details
Name: | abev_TotalExposureLiabilities
Namespace Prefix: | abev_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fair value of collateral held that is permitted to be sold or repledged in the absence of default by the owner of the collateral. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 15 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_15_a&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_AssetsHeldAsCollateralPermittedToBeSoldOrRepledgedAtFairValue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant