Analysis Of Income And Expense [Abstract]
| Concept |
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 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||
| Revenue | — | — |
4,626,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
4,040,000,000
GBP
|
— | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||||||
| Investment income | — | — |
4,075,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
4,649,000,000
GBP
|
— | — | — | — | — |
| Miscellaneous other operating expense | — | — |
575,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
584,000,000
GBP
|
— | — | — | — | — |
| Operating expense | — | — |
4,538,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
4,105,000,000
GBP
|
— | — | — | — | — |
| Fee and commission income (expense) [abstract] | ||||||||||||||||||
| Fee and commission income [abstract] | ||||||||||||||||||
| Fee and commission income | — | — |
542,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
581,000,000
GBP
|
— | — | — | — | — |
| Fee and commission expense [abstract] | ||||||||||||||||||
| Fee and commission expense | — | — |
49,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
54,000,000
GBP
|
— | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income |
–
GBP
|
–
GBP
|
42,000,000
GBP
|
–
GBP
|
–
GBP
|
42,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
175,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
175,000,000
GBP
|
–
GBP
|