Analysis Of Income And Expense [Abstract]
| Concept |
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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||
| Interest income | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Interest income on loans and advances to customers | — | — | — | — |
58,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
36,600,000
GBP
|
— |
| Other revenue | — | — | — | — |
318,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
314,800,000
GBP
|
— |
| Revenue | — | — | — | — |
1,491,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,550,000,000
GBP
|
— |
| Material income and expense [abstract] | ||||||||||||||||||
| Impairment loss (reversal of impairment loss) recognised in profit or loss, loans and advances [abstract] | ||||||||||||||||||
| Impairment loss (reversal of impairment loss) recognised in profit or loss, loans and advances | — | — | — | — |
18,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
13,300,000
GBP
|
— |
| Finance income (cost) | — | — | — | — |
11,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
11,900,000
GBP
|
— |
| Interest expense | — | — | — | — |
12,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
6,100,000
GBP
|
— |
| Operating expense | — | — | — | — |
1,010,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
824,600,000
GBP
|
— |
| Miscellaneous other comprehensive income [abstract] | ||||||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations |
–
GBP
|
–
GBP
|
6,800,000
GBP
|
–
GBP
|
6,900,000
GBP
|
–
GBP
|
–
GBP
|
100,000
GBP
|
6,800,000
GBP
|
300,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
10,100,000
GBP
|
10,100,000
GBP
|
10,400,000
GBP
|
–
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income |
18,100,000
GBP
|
–
GBP
|
155,300,000
GBP
|
242,600,000
GBP
|
154,200,000
GBP
|
–
GBP
|
373,000,000
GBP
|
1,100,000
GBP
|
6,800,000
GBP
|
1,500,000
GBP
|
–
GBP
|
6,600,000
GBP
|
48,700,000
GBP
|
–
GBP
|
10,100,000
GBP
|
945,700,000
GBP
|
944,200,000
GBP
|
997,900,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — |
155,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
945,700,000
GBP
|
— |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — | — |
1,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,500,000
GBP
|
— |