Note 31 - Non-cash Items - Investment and Financing Activities Not Involving Cash (Details) - BRL (R$) R$ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement Line Items [Line Items]
Acquisition of property, plant and equipment			R$ 105.6
Acquisition of investments payables		208.7
Cash financing cost other than interests	42.3	37.7	1,752.3
PERT 2017	199.7
Fair value of option granted	221.8	205.1	144.6
Others			R$ 41.1

The acquisition of investments payables in a non-cash transaction.

No definition available.

Name:	abev_NoncashItemsAcquisitionOfInvestmentsPayables
Namespace Prefix:	abev_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The acquisition of property, plant and equipment in a non-cash transaction.

No definition available.

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

Cash financing cost other than interests in a non-cash transaction.

No definition available.

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

The non-cash adjustment for the federal tax amnesty program.

No definition available.

Name:	abev_NoncashItemsFederalTaxAmnestyProgram
Namespace Prefix:	abev_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Other non-cash items.

No definition available.

The reclassification of finance cash flow to operational cash flow.

No definition available.

Name:	abev_NoncashItemsReclassificationOfFinanceCashFlowToOperationalCashFlow
Namespace Prefix:	abev_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

No definition available.