Note 32 - Related Parties (Details Textual) - BRL (R$) R$ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fundacao Zerrenner [member]
Statement Line Items [Line Items]
Percentage of ownership held by a related party	10.20%
Expenses incurred by a related party	R$ 273.2	R$ 300.1
Recognised finance lease as assets	85.0
Annual lease payment	3.3
Fundacao Zerrenner [member] \| Active employees [member]
Statement Line Items [Line Items]
Expenses incurred by a related party	238.4	264.3
Fundacao Zerrenner [member] \| Retirees [member]
Statement Line Items [Line Items]
Expenses incurred by a related party	34.8	35.8
Anheuser-Busch, Inc [member]
Statement Line Items [Line Items]
Transfers under licence agreements from entity, related party transactions	2.0	2.8	R$ 2.0
Transfers under licence agreements to entity, related party transactions	R$ 431.6	R$ 369.1	R$ 374.0

The amount payable annually for a lease.

No definition available.

Name:	abev_AnnualLeasePayment
Namespace Prefix:	abev_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of expenses incurred by a related party during the period.

+ References

No definition available.

+ Details

Name:	abev_ExpensesIncurredByARelatedParty
Namespace Prefix:	abev_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage of ownership of the company that is held by a related party.

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

Name:	abev_StatementLineItems
Namespace Prefix:	abev_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of assets recognised by the entity, which are leased under finance leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2019-01-01
-Name IAS
-Number 17
-IssueDate 2017-01-01
-Paragraph 31
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2017-03-02&anchor=para_31_a&doctype=Standard&book=B
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_RecognisedFinanceLeaseAsAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of transfers under licence agreements from the entity in related party transactions. [Refer: Related parties [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 24
-IssueDate 2017-01-01
-Paragraph 21
-Subparagraph f
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2017-03-01&anchor=para_21_f&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_TransfersUnderLicenseAgreementsFromEntityRelatedPartyTransactions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of transfers under licence agreements to the entity in related party transactions. [Refer: Related parties [member]]

+ References

+ Details

Name:	ifrs-full_TransfersUnderLicenseAgreementsToEntityRelatedPartyTransactions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=abev_FundacaoZerrennerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CounterpartiesAxis=abev_ActiveEmployeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CounterpartiesAxis=abev_RetireesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=abev_AnheuserBuschIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: