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 |
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] | ||||||||||||||||
| Increase (decrease) through acquisition of subsidiary, equity | — | — | — | — | — | — | — | — |
39. 6
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
3 9.6
GBP
|
–
GBP
|
| Decrease (increase) through tax on share-based payment transactions, equity |
–
GBP
|
–
GBP
|
7. 4
GBP
|
–
GBP
|
–
GBP
|
7. 4
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through transactions with owners, equity |
200,000
GBP
|
0 .7
GBP
|
96 . 5
GBP
|
–
GBP
|
1 .1
GBP
|
88,200,000
GBP
|
8 . 9
GBP
|
–
GBP
|
24 .6
GBP
|
2,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
200,000
GBP
|
4 4 .1
GBP
|
7 1 .1
GBP
|