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Equity Capital and Earnings Per Share - Summary of Reconciliation of Denominator (Numbers of Shares) in Calculation of Basic and Diluted Earnings Per Share (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Earnings per share [abstract]
Weighted average number of common shares (in millions)	1,910	1,942
Dilutive stock-based awards(in millions)	3	4
Weighted average number of diluted common shares (in millions)	1,913	1,946

X

- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2022-03-24
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-URIDate 2022-03-24

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X

- Definition

The number of dilutive potential ordinary shares that relate to the assumed exercise of the entity's share options.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 33
-IssueDate 2022-03-24
-Paragraph 70
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2022-en-r&anchor=para_70_b&doctype=Standard
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- References

No definition available.

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- Definition

The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
-IssueDate 2022-03-24
-Paragraph 70
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2022-en-r&anchor=para_70_b&doctype=Standard
-URIDate 2022-03-24

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