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Deferred tax - Movement in deferred tax assets and liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Movement in deferred tax assets and liabilities
At 1 January,	$ (74)	$ (104)	$ (136)
Credits / (Charged) to the income statement	(1)	24	15
(Charged) / Credited to other comprehensive income	(1)	8	4
Exchange	(1)	(2)	13
At December 31,	(77)	(74)	(104)
Assets
Movement in deferred tax assets and liabilities
At 1 January,	283	216	166
Credits / (Charged) to the income statement	(6)	60	75
(Charged) / Credited to other comprehensive income	(3)	4	(21)
Exchange	(6)	3	(4)
At December 31,	268	283	216
Liabilities
Movement in deferred tax assets and liabilities
At 1 January,	(357)	(320)	(302)
Credits / (Charged) to the income statement	5	(36)	(60)
(Charged) / Credited to other comprehensive income	2	4	25
Exchange	5	(5)	17
At December 31,	$ (345)	$ (357)	$ (320)

X

- Definition

The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph g
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_g_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

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X

- Definition

The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph g
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_g_i&doctype=Standard
-URIDate 2024-03-27

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X

- Definition

The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 90
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_90&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph ab
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_ab&doctype=Standard
-URIDate 2024-03-27

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X

- Definition

The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81&doctype=Standard
-URIDate 2024-03-27

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X

- References

No definition available.

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