Employee compensation and benefits - Share-based payments (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| 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 | $ 608 | $ 529 | $ 482 |
| Expense from share-based payments | 668 | 578 | 522 |
| Conditional share awards | |||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | |||
| Expense from share-based payments | 650 | 551 | 499 |
| 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 | $ 18 | $ 27 | $ 23 |