Analysis Of Income And Expense [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||
| Revenue [abstract] | ||||||||||||||
| Revenue |
5,449,000,000
GBP
|
— | — | — | — | — | — | — | — |
4,626,000,000
GBP
|
— | — | — | — |
| Material income and expense [abstract] | ||||||||||||||
| Investment income |
4,877,000,000
GBP
|
— | — | — | — | — | — | — | — |
4,075,000,000
GBP
|
— | — | — | — |
| Miscellaneous other operating expense |
691,000,000
GBP
|
— | — | — | — | — | — | — | — |
575,000,000
GBP
|
— | — | — | — |
| Operating expense |
5,413,000,000
GBP
|
— | — | — | — | — | — | — | — |
4,538,000,000
GBP
|
— | — | — | — |
| Fee and commission income (expense) [abstract] | ||||||||||||||
| Fee and commission income [abstract] | ||||||||||||||
| Fee and commission income |
544,000,000
GBP
|
— | — | — | — | — | — | — | — |
542,000,000
GBP
|
— | — | — | — |
| Fee and commission expense [abstract] | ||||||||||||||
| Fee and commission expense |
49,000,000
GBP
|
— | — | — | — | — | — | — | — |
49,000,000
GBP
|
— | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income |
35,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,000,000
GBP
|
34,000,000
GBP
|
–
GBP
|
–
GBP
|
42,000,000
GBP
|
–
GBP
|
42,000,000
GBP
|
–
GBP
|
–
GBP
|