Operating Lease Contract Maturity Term.

No definition available.

Name:	bud_OperatingLeaseContractMaturityTerm
Namespace Prefix:	bud_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating lease initial period.

+ References

No definition available.

+ Details

Name:	bud_OperatingLeaseInitialPeriod
Namespace Prefix:	bud_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of improve the production facilities.

+ References

No definition available.

+ Details

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

- Definition

Percentage of improving administrative capabilities and for the purchase of hardware and software.

+ References

No definition available.

+ Details

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

- Definition

Sublease expiration period.

+ References

No definition available.

+ Details

Name:	bud_SubleaseExpirationPeriod
Namespace Prefix:	bud_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of additions to right-of-use assets. [Refer: Right-of-use assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2025-01-01
-Paragraph 53
-Subparagraph h
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_53_h&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 115
-Subparagraph g
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_g&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 115
-Subparagraph g
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_115_g&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_AdditionsToRightofuseAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount in the consolidated financial statements of the assets of the group to which significant restrictions (for example, statutory, contractual and regulatory restrictions) apply on the entity's ability to access or use the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2025-01-01
-Paragraph 13
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_13_c&doctype=Standard
-URIDate 2025-03-27

+ Details

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

- Definition

The amount of contractual commitments for the acquisition of property, plant and equipment. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2025-01-01
-Paragraph 74
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_74_c&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 201
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_201_b&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 201
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_201_b&doctype=Standard
-URIDate 2025-03-27

+ Details

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

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

- Details

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

- Details

Name:	bud_ArrangementsInvolvingAboutLegalFormOfLeaseAxis=bud_DutchAndBelgianPubRealEstateMember
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_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis=ifrs-full_PropertyPlantAndEquipmentNotSubjectToOperatingLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=bud_ProductionFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=bud_LogisticsAndCommercialInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=bud_AdministrativeCapabilitiesAndPurchaseOfHardwareAndSoftwareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_PropertyPlantAndEquipmentSubjectToOperatingLeasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Disclosure of detailed information about property, plant and equipment [line items]
Contractual commitments for acquisition of property, plant and equipment	$ 419		$ 171
Lease agreement term	27
Additions to right of use assets	$ 200	$ 169
Assets to which significant restrictions apply	$ 0		$ 0
Bottom of range [member] \| Dutch and Belgian pub real estate [member]
Disclosure of detailed information about property, plant and equipment [line items]
Sublease average outstanding period (in years)	6
Top of range [member] \| Dutch and Belgian pub real estate [member]
Disclosure of detailed information about property, plant and equipment [line items]
Sublease average outstanding period (in years)	8
Property, plant and equipment not subject to operating leases [member] \| Top of range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Operating lease initial period (in years)	ten years
Production facilities [member]
Disclosure of detailed information about property, plant and equipment [line items]
Percentage of improve the production facilities	25.00%
Logistics and commercial investments [member]
Disclosure of detailed information about property, plant and equipment [line items]
Percentage of improve the production facilities	60.00%
Administrative capabilities and purchase of hardware and software [member]
Disclosure of detailed information about property, plant and equipment [line items]
Percentage of improving administrative capabilities and for the purchase of hardware and software	15.00%
Property, plant and equipment subject to operating leases [member] \| Bottom of range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Operating lease initial period (in years)	five