Provisions - Narrative (Details) - GBP (£) £ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of other provisions [line items] | ||
| Provisions | £ 766 | £ 736 |
| Expected credit losses held against contingent liabilities and commitments | ||
| Disclosure of other provisions [line items] | ||
| Provisions | 398 | 420 |
| Barclays Bank PLC | ||
| Disclosure of other provisions [line items] | ||
| Provisions | 428 | 435 |
| Not more than one year | ||
| Disclosure of other provisions [line items] | ||
| Expected reimbursement | 693 | 663 |
| Not more than one year | Barclays Bank PLC | ||
| Disclosure of other provisions [line items] | ||
| Expected reimbursement | £ 415 | £ 421 |