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Other Reserves - Summary of Information About Other Reserves (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of reserves within equity [abstract]
Employee benefits reserve	$ 281	$ 290	$ 278
Foreign currency translation reserve	795	795	796
Hedging reserve	1	88	(586)
Distributable profits reserve	3,069	4,118	3,541
Other reserves	(38)	(30)	2
Total	$ 4,108	$ 5,261	$ 4,031

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- References

No definition available.

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- Definition

A component of equity representing reserves within equity, not including retained earnings. [Refer: Retained earnings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-Number 1
-IssueDate 2024-01-01
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- Definition

A component of equity representing the accumulated portion of gain (loss) on a hedging instrument that is determined to be an effective hedge for cash flow hedges. [Refer: Cash flow hedges [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-IssueDate 2024-01-01
-Paragraph 6.5.11
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- Definition

A component of equity representing exchange differences on translation of financial statements recognised in other comprehensive income and accumulated in equity. [Refer: Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 21
-IssueDate 2024-01-01
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- Definition

A component of equity representing the accumulated remeasurements of defined benefit plans. [Refer: Defined benefit plans [domain]]

+ References

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- Definition

Distributable profits reserve.

+ References

No definition available.

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- Definition

Other reserves, miscellaneous.

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No definition available.

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