Other income (Detail) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Other Income [Line Items] | ||
| Net gains / (losses) from acquisitions and disposals of subsidiaries | $ 1 | $ 98 |
| Net gains / (losses) from disposals of investments in associates and joint ventures | 163 | 3 |
| Share of net profits of associates and joint ventures | 110 | 157 |
| Total | 274 | 257 |
| Income from properties | 20 | 12 |
| Net gains / (losses) from properties held for sale | 8 | 3 |
| Other | (30) | (29) |
| Total other income | 271 | 243 |
| Gains losses on repurchase of entity's own debt instruments | $ (39) | (62) |
| Swisscard | ||
| Other Income [Line Items] | ||
| Share of net profits of associates and joint ventures | 64 | |
| Proportion of ownership interest in joint venture | 50.00% | |
| Select Portfolio Servicing | ||
| Other Income [Line Items] | ||
| Net gains / (losses) from acquisitions and disposals of subsidiaries | $ 97 | |
| X | ||||||||||
- Definition The gains (losses) on disposals of non-current assets. [Refer: Non-current assets] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of gains / (losses) from acquisitions and disposals of subsidiaries. No definition available.
|
| X | ||||||||||
- Definition The amount of gains / (losses) from disposal of investments in associates and joint ventures. No definition available.
|
| X | ||||||||||
- Definition The gains (losses) on the repurchase of entity's own debt instruments. No definition available.
|
| X | ||||||||||
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. No definition available.
|
| X | ||||||||||
- Definition The amount of other miscellaneous income. No definition available.
|
| X | ||||||||||
- Definition The amount of net income generated from properties. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|