Other investments (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Disclosure of Detailed Information About Other Investment Explanatory [Line Items]
Other investments	$ 689	$ 765
Other investments	3,277	2,665
Investments other than investments accounted for using equity method	3,966	3,430
Financial assets at amortised cost \| Time deposits
Disclosure of Detailed Information About Other Investment Explanatory [Line Items]
Non-current investments	205	273
Current investments	1,509	1,425
Financial assets at amortised cost \| Debt investments
Disclosure of Detailed Information About Other Investment Explanatory [Line Items]
Current investments	1,247	824
FVTPL \| Debt investments
Disclosure of Detailed Information About Other Investment Explanatory [Line Items]
Non-current investments	172	187
Current investments	512	247
FVTPL \| Equity investments
Disclosure of Detailed Information About Other Investment Explanatory [Line Items]
Non-current investments	213	207
FVOCI \| Debt investments
Disclosure of Detailed Information About Other Investment Explanatory [Line Items]
Non-current investments	99	98
Current investments	$ 9	$ 169

Current investments other than investments accounted for using equity method.

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- Definition

Disclosure of Detailed Information About Other Investment Explanatory [Line Item ]

+ References

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- Definition

The amount of current financial assets. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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- Definition

The amount of investments other than investments accounted for using the equity method. [Refer: Investments accounted for using equity method]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
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The amount of non-current investments other than investments accounted for using the equity method. [Refer: Investments accounted for using equity method; Non-current assets; Investments other than investments accounted for using equity method]

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