Carrying value of associated financial liabilities.

No definition available.

Name:	bud_CarryingValueOfAssociatedFinancialLiabilities
Namespace Prefix:	bud_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Non-derivative financial liabilitiy.

+ References

No definition available.

+ Details

Name:	bud_NonDerivativeFinancialLiabilities
Namespace Prefix:	bud_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of options exercised .

+ References

No definition available.

+ Details

Name:	bud_PercentageOfOptionsExercised
Namespace Prefix:	bud_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of ownership shares hold by ELJ.

+ References

No definition available.

+ Details

Name:	bud_PercentageOfOwnershipSharesHoldByElj
Namespace Prefix:	bud_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of revenue accounted by individual customer in entity revenue.

+ References

No definition available.

+ Details

Name:	bud_PercentageOfRevenueAccountedByIndividualCustomerInEntityRevenue
Namespace Prefix:	bud_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage proportion of financial liabilities

+ References

No definition available.

+ Details

Name:	bud_PercentageProportionOfFinancialLiabilities
Namespace Prefix:	bud_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Put option re-measured at fair value.

+ References

No definition available.

+ Details

Name:	bud_PutOptionRemeasuredAtFairValue
Namespace Prefix:	bud_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Share price.

+ References

No definition available.

+ Details

Name:	bud_SharePrice
Namespace Prefix:	bud_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The description of concentrations of risks arising from financial instruments. [Refer: Classes of financial instruments [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 34
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_34_c&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ConcentrationsOfRisk
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Classes of financial instruments [domain]; Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 25
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_25&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_FinancialLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The gain (loss) recognised on designation of a financial instrument, or a proportion of it, as measured at fair value through profit or loss, because a credit derivative is used to manage the credit risk of that financial instrument. [Refer: Credit risk [member]; Derivatives [member]; Classes of financial instruments [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 24G
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_24G_b&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_GainLossOnDesignationOfFinancialInstrumentAsMeasuredAtFairValueThroughProfitOrLossBecauseCreditDerivativeIsUsedToManageCreditRisk
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 35K
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35K_a&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_MaximumExposureToCreditRisk
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Total for all subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2025-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_17_b_iii&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2025-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2025-01-01
-Paragraph 19B
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_19B_c&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInSubsidiary
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=bud_EquitySwapsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level3OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BusinessCombinationsAxis=bud_CerveceriaNacionalDominicanaSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=bud_AmbevMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_EquityPriceRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_InterestRateRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=ifrs-full_FloatingInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_HedgedItemsAxis=bud_BeforeHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_CreditRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfHedgesAxis=bud_DeferredConsiderationOnAcquisitionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis=bud_PutOption1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Risks Arising From Financial Instruments - Additional Information (Detail) $ in Millions		6 Months Ended
	Jan. 31, 2024 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2024	Jun. 30, 2026 € / shares	Dec. 31, 2025 USD ($)	Dec. 31, 2025 € / shares
Disclosure of detailed information about financial instruments [line items]
Amount of exposure equivalent to shares hedged		$ 6,494.0			$ 5,406.0
Financial Liabilities		98,204.0			101,013.0
Share Price \| € / shares				€ 72.66		€ 54.9
Equity swaps [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities		3,206.0			5,481.0
Observable Market Inputs - Level 3 [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities		$ 556.0			241.0
CERVECERIA NACIONAL DOMINICANA S.A. [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of shares hold by ELJ		3.00%
CERVECERIA NACIONAL DOMINICANA S.A. [member] \| Ambev [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of options exercised	12.00%
Ownership interest	97.00%		85.00%
Put option re-measured at fair value	$ 300.0
Equity price risk [member]
Disclosure of detailed information about financial instruments [line items]
Amount of exposure equivalent to shares hedged		$ 90.5			100.5
Loss recognized in the profit or loss		2,033.0
Interest Rate Risk [Member] \| Floating interest rate [member]
Disclosure of detailed information about financial instruments [line items]
Carrying value of financial liabilities		$ 1,850.0
Proportion of company's financial liabilities		2.60%
Interest Rate Risk [Member] \| Before hedging [Member]
Disclosure of detailed information about financial instruments [line items]
Carrying value of financial liabilities		$ 29.0			14.0
Credit risk [member]
Disclosure of detailed information about financial instruments [line items]
Concentration of credit risks, description		There was no significant concentration of credit risks with any single counterparty as of 30 June 2026 and no single customer represented more than 10% of the total revenue of the group in 2026.
Credit risk [member] \| Top of range [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of revenue accounted by individual customer		10.00%
Deferred consideration on acquisitions [member] \| Put Option [Member] \| Observable Market Inputs - Level 3 [member]
Disclosure of detailed information about financial instruments [line items]
Non derivative financial liability		$ 226.0			$ 210.0