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v3.20.2

Trade and Other Payables - Additional Information (Detail) - USD ($) $ in Billions | Jun. 30, 2020 | Dec. 31, 2019
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Ambev And E Leon Jimenes Sa [member] | Written Put Options [member] |  |
Disclosure of trade and other payables [line items] |  |
Deferred consideration on acquisitions | $ 0.7 | $ 7.0

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- Definition Deferred consideration on acquisitions. + References No definition available. + Details
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Namespace Prefix: | bud_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with disclosure of trade and other payables. + References No definition available. + Details
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Namespace Prefix: | bud_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis=ifrs-full_WrittenPutOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |