Interests in associates and joint ventures - Share of profit (Details) - USD ($) $ in Millions |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| Disclosure of associates [line items] | |||
| Share of profit in associates and joint ventures | $ 1,651 | $ 1,626 | |
| Bank of Communications Co., Limited | |||
| Disclosure of associates [line items] | |||
| Share of profit in associates and joint ventures | 1,260 | 1,257 | |
| Less: Impairment of interest in BoCom | 1,000 | 0 | $ 0 |
| Saudi Awwal Bank | |||
| Disclosure of associates [line items] | |||
| Share of profit in associates and joint ventures | 345 | 317 | |
| Other associates and joint ventures | |||
| Disclosure of associates [line items] | |||
| Share of profit in associates and joint ventures | $ 46 | $ 52 | |