Share-Based Payments - Bud Weiser Apac Share-Based Compensation Program (Detail) shares in Millions, Unit_pure in Millions, $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($) shares
Long Term Incentive Stock Option Plan [member]
Disclosure Of Share Based Compaensation Program [Line Items]
Number of shares granted \| shares		0.1
Fair value of options granted		$ 2
Restricted Stock Units [member]
Disclosure Of Share Based Compaensation Program [Line Items]
Share-based compensation grant date fair value	$ 2	$ 52
Budweiser APAC [Member] \| Long Term Incentive Stock Option Plan [member]
Disclosure Of Share Based Compaensation Program [Line Items]
Number of shares granted	69.7
Fair value of options granted	$ 52
Budweiser APAC [Member] \| Restricted Stock Units [member]
Disclosure Of Share Based Compaensation Program [Line Items]
Share-based compensation grant date fair value	7.0
Share-based compensation grant date fair value	$ 84
Budweiser APAC [Member] \| Share-Based Compensation Plan [member]
Disclosure Of Share Based Compaensation Program [Line Items]
Share-based compensation grant date fair value	0.2
Share-based compensation grant date fair value	$ 1
Budweiser APAC [Member] \| People bet plan [member]
Disclosure Of Share Based Compaensation Program [Line Items]
Share-based compensation grant date fair value	0.6
Share-based compensation grant date fair value	$ 2

Disclosure Of Share Based Compaensation Program.

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- Definition

The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The number of share options granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2019-01-01
-Paragraph 45
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- Definition

The weighted average fair value at the measurement date of granted equity instruments other than share options. [Refer: Weighted average [member]]

+ References

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- Definition

The weighted average fair value of share options granted during the period at the measurement date. [Refer: Weighted average [member]]

+ References

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