Statement Of Comprehensive Income [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 |
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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | |||||||||||||||||||
| Profit (loss) | — |
232,000,000
GBP
|
232,000,000
GBP
|
— | — | — | — | — | — | — | — |
263,000,000
GBP
|
263,000,000
GBP
|
186,000,000
GBP
|
186,000,000
GBP
|
— | — | — | — |
| Other comprehensive income [abstract] | |||||||||||||||||||
| Other comprehensive income | — |
295,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
12,000,000
GBP
|
— |
67,000,000
GBP
|
— | — | — | — | — |
| Comprehensive income |
308,000,000
GBP
|
63,000,000
GBP
|
245,000,000
GBP
|
6,000,000
GBP
|
2,000,000
GBP
|
300,000,000
GBP
|
13,000,000
GBP
|
10,000,000
GBP
|
1,000,000
GBP
|
1,000,000
GBP
|
3,000,000
GBP
|
275,000,000
GBP
|
276,000,000
GBP
|
119,000,000
GBP
|
177,000,000
GBP
|
1,000,000
GBP
|
5,000,000
GBP
|
58,000,000
GBP
|
52,000,000
GBP
|
| Comprehensive income attributable to [abstract] | |||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — |
63,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
275,000,000
GBP
|
— |
119,000,000
GBP
|
— | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — |
–
GBP
|
— | — | — | — | — | — | — | — | — |
–
GBP
|
— |
–
GBP
|
— | — | — | — | — |