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Risks Arising from Financial Instruments - Summary of Allowance for Impairment (Detail) - Impairment losses [member] - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2026 | Dec. 31, 2025
Disclosure of impairment loss and reversal of impairment loss [line items] |  |
Beginning balance | $ (468) | $ (438)
Impairment losses | (25) | (53)
Derecognition | 10 | 64
Currency translation and other | (4) | (40)
Ending balance | $ (487) | $ (468)

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- Definition Allowance For Impairment Recognized During the Period on Financial Assets. + References No definition available. + Details
Name: | bud_AllowanceForImpairmentRecognizedDuringThePeriodOnFinancialAssets
Namespace Prefix: | bud_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Currency Translation And Other Allowance Account For Credit Losses Of Financial Assets. + References No definition available. + Details
Name: | bud_CurrencyTranslationAndOtherAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | bud_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Derecognition allowance account for credit losses of financial assets. + References No definition available. + Details
Name: | bud_DerecognitionAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | bud_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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- Definition Impairment Losses on Financial Assets. + References No definition available. + Details
Name: | bud_ImpairmentLossesOnFinancialAssets
Namespace Prefix: | bud_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_AccumulatedImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |