Statement Of Changes In Equity [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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||
| Dividends recognised as distributions to owners of parent |
–
GBP
|
88. 7
GBP
|
–
GBP
|
88. 7
GBP
|
–
GBP
|
–
GBP
|
88,700,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
52. 2
GBP
|
52. 2
GBP
|
5 2.2
GBP
|
| Dividends recognised as distributions to non-controlling interests |
–
GBP
|
–
GBP
|
–
GBP
|
3. 8
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
3. 8
GBP
|
–
GBP
|
3. 0
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
3,000,000
GBP
|
–
GBP
|
| Increase (decrease) through acquisition of subsidiary, equity |
–
GBP
|
–
GBP
|
–
GBP
|
5,300,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
5,300,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through exercise of options, equity |
–
GBP
|
13 . 6
GBP
|
–
GBP
|
13 . 6
GBP
|
–
GBP
|
–
GBP
|
13 . 6
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — |