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Note 27 - Financial Instruments and Risks (Details Textual) - BRL (R$) R$ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement Line Items [Line Items]
Value at risk exposure, probable		95.00%
Value at risk, duration		21 days
Value at risk, adverse scenario, deterioration percentage		25.00%
Value at risk, remote scenario, deterioration percentage		50.00%
Total gains (losses) on financial assets at fair value through profit or loss		R$ 227.6	R$ 247.5	R$ 261.4
Guarantees held for derivative instruments	R$ 608.3	608.3	R$ 486.8
Swap contract [member]
Statement Line Items [Line Items]
Total gains (losses) on financial assets at fair value through profit or loss	67.0
Equity price risk [member]
Statement Line Items [Line Items]
Risk exposure associated with instruments sharing characteristic	R$ 2,300.0	R$ 2,300.0
Bottom of range [member]
Statement Line Items [Line Items]
Trigger clause percentage, credit risk		10.00%
Top of range [member]
Statement Line Items [Line Items]
Trigger clause percentage, credit risk		15.00%

X

- Definition

The amount of guarantees held for derivative instrument requirements.

+ References

No definition available.

+ Details

Name:	abev_GuaranteesHeldForDerivativeInstruments
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 trigger clause percentage comparing the fair value of an operational to the notional value.

+ References

No definition available.

+ Details

Name:	abev_TriggerClausePercentageCreditRisk
Namespace Prefix:	abev_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The value at risk under an adverse scenario relating to the deterioration percentage.

+ References

No definition available.

+ Details

Name:	abev_ValueAtRiskAdverseScenarioDeteriorationPercentage
Namespace Prefix:	abev_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of days under the Value at Risk exposure.

+ References

No definition available.

+ Details

Name:	abev_ValueAtRiskDuration
Namespace Prefix:	abev_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage range for potential exposure under a probable scenario using Value at Risk.

+ References

No definition available.

+ Details

Name:	abev_ValueAtRiskExposureProbable
Namespace Prefix:	abev_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The value at risk under a remote scenario relating to the deterioration percentage.

+ References

No definition available.

+ Details

Name:	abev_ValueAtRiskRemoteScenarioDeteriorationPercentage
Namespace Prefix:	abev_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The gains (losses) on financial assets at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 20
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_20_a_i&doctype=Standard
-URIDate 2017-03-09

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of risk exposure associated with financial instruments with a shared characteristic that identifies a concentration of risks. [Refer: Financial instruments, class [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph B8
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_B8_c&doctype=Appendix&seq=2
-URIDate 2017-03-09

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

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- Details

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Namespace Prefix:
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Period Type:

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
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