Employee compensation and benefits - Share-based payments (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of terms and conditions of share-based payment arrangement [line items]
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets	$ 529	$ 482	$ 400
Expense from share-based payments	578	522	424
Conditional share awards
Disclosure of terms and conditions of share-based payment arrangement [line items]
Expense from share-based payments	551	499	402
Savings-related and other share award option plans
Disclosure of terms and conditions of share-based payment arrangement [line items]
Expense from share-based payments	$ 27	$ 23	$ 22

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

+ Details

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- Definition

The amount of expense arising from equity-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2024-01-01
-Paragraph 51
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_51_a&doctype=Standard
-URIDate 2024-03-27

+ Details

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- Definition

The amount of expense arising from share-based payment transactions in which the goods or services received did not qualify for recognition as assets.

+ References

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- Details

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- Details

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