Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
91,000,000
GBP
|
91,000,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
339,000,000
GBP
|
372,000,000
GBP
|
— |
| Investment property [abstract] | |||
| Investment property |
9,000,000
GBP
|
10,000,000
GBP
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in associates reported in separate financial statements |
16,000,000
GBP
|
2,000,000
GBP
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
1,949,000,000
GBP
|
1,859,000,000
GBP
|
1,782,000,000
GBP
|
| Miscellaneous assets [abstract] | |||
| Derivative financial assets |
26,000,000
GBP
|
57,000,000
GBP
|
— |
| Loans and advances | — | — | — |
| Loans and advances to customers |
56,000,000
GBP
|
38,000,000
GBP
|
— |
| Miscellaneous liabilities [abstract] | |||
| Derivative financial liabilities |
53,000,000
GBP
|
25,000,000
GBP
|
— |
| Investment contracts liabilities |
51,758,000,000
GBP
|
43,396,000,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
115,000,000
GBP
|
115,000,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
863,000,000
GBP
|
958,000,000
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Reserve of share-based payments |
42,000,000
GBP
|
42,000,000
GBP
|
— |
| Capital redemption reserve |
346,000,000
GBP
|
346,000,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
62,448,000,000
GBP
|
53,345,000,000
GBP
|
— |
| Liabilities |
61,025,000,000
GBP
|
51,826,000,000
GBP
|
— |
| Assets less current liabilities [abstract] |