Interest-Bearing Loans and Borrowings - Summary of Interest-bearing Loans and Borrowings (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
AB InBev [member]
Disclosure of detailed information about borrowings [line items]
Current interest-bearing loans and borrowings	$ 73,013	$ 72,169
Non-Current Liabilities [Member]
Disclosure of detailed information about borrowings [line items]
Unsecured bond issues	70,199	68,857
Lease liabilities	1,776	1,748
Unsecured other loans	139	100
Secured bank loans	15	16
Non-current interest-bearing loans and borrowings	72,128	70,720
Current Liabilities [member]
Disclosure of detailed information about borrowings [line items]
Unsecured bond issues	0	627
Lease liabilities	621	556
Unsecured bank loans	178	94
Unsecured other loans	82	169
Secured bank loans	3	3
Current interest-bearing loans and borrowings	$ 885	$ 1,449

Unsecured other loans current.

No definition available.

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Balance Type:	credit
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- Definition

Unsecured other loans noncurrent.

+ References

No definition available.

+ Details

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- Definition

The amount of current bonds issued and the current portion of non-current bonds issued. [Refer: Bonds issued]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard
-URIDate 2025-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

The amount of current borrowings and current portion of non-current borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard
-URIDate 2025-03-27

+ Details

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

- Definition

The amount of current lease liabilities. [Refer: Lease liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2025-01-01
-Paragraph 47
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2025-03-27

+ Details

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

- Definition

The amount of current secured bank loans received and the current portion of non-current secured bank loans received. [Refer: Secured bank loans received]

+ References

+ Details

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

- Definition

The amount of current unsecured bank loans received and the current portion of non-current unsecured bank loans received. [Refer: Unsecured bank loans received]

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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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

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Balance Type:	na
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- Definition

The non-current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

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

- Definition

The amount of non-current lease liabilities. [Refer: Lease liabilities]

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The non-current portion of non-current bonds issued. [Refer: Bonds issued]

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

The non-current portion of non-current secured bank loans received. [Refer: Secured bank loans received]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
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Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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