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Share-Based Payments - Additional Information (Detail) shares in Millions, Unit_pure in Millions, $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2020 USD ($) shares | Jun. 30, 2019 USD ($) shares
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Share-based payment transactions income | $ 18 |
Share-based payment transactions expense |  | $ 185
Share-based compensation number of shares issued | shares | 1,959.0 | 1,957.0
Restricted Stock Units [member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Share-based compensation number of shares issued | shares | 0.1 | 0.6
Share-based compensation grant date fair value | $ 2 | $ 52
Restricted Stock Units [member] | AB inBev [member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Stock options granted | 0.1 | 0.1
Fair value of stock options granted | $ 4 | $ 4

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- Definition The amount of income from share-based payment transactions with employees. + References No definition available. + Details
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Balance Type: | credit
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 domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of expense from share-based payment transactions with employees. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
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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 -Subparagraph b -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_b_ii&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The number of shares issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_106_d&doctype=Standard -URIDate 2019-03-27 + Details
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Balance Type: | na
Period Type: | instant

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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Details
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- Details
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