Statement Of Comprehensive Income [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 |
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 |
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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
381,000,000
GBP
|
–
GBP
|
— |
–
GBP
|
381,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
232,000,000
GBP
|
232,000,000
GBP
|
–
GBP
|
— | — | — | — | — |
–
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
— |
–
GBP
|
— | — |
–
GBP
|
263,000,000
GBP
|
263,000,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||
| Other comprehensive income | — |
225,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
295,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
12,000,000
GBP
|
— |
| Comprehensive income |
–
GBP
|
156,000,000
GBP
|
231,000,000
GBP
|
–
GBP
|
–
GBP
|
387,000,000
GBP
|
–
GBP
|
9,000,000
GBP
|
243,000,000
GBP
|
–
GBP
|
–
GBP
|
3,000,000
GBP
|
–
GBP
|
308,000,000
GBP
|
63,000,000
GBP
|
245,000,000
GBP
|
–
GBP
|
6,000,000
GBP
|
–
GBP
|
–
GBP
|
2,000,000
GBP
|
–
GBP
|
–
GBP
|
300,000,000
GBP
|
–
GBP
|
–
GBP
|
13,000,000
GBP
|
10,000,000
GBP
|
1,000,000
GBP
|
1,000,000
GBP
|
–
GBP
|
–
GBP
|
3,000,000
GBP
|
–
GBP
|
275,000,000
GBP
|
276,000,000
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — |
156,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
63,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
275,000,000
GBP
|
— |
| Comprehensive income, attributable to non-controlling interests | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— |