Statement Of Changes In Equity [Abstract]
| Concept |
2022-01-02 to 2022-12-31 |
2022-01-02 to 2022-12-31 |
2022-01-02 to 2022-12-31 |
2022-01-02 to 2022-12-31 |
2022-01-02 to 2022-12-31 |
2021-01-03 to 2022-01-01 |
2021-01-03 to 2022-01-01 |
2021-01-03 to 2022-01-01 |
2021-01-03 to 2022-01-01 |
2021-01-03 to 2022-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||
| Statement of changes in equity [line items] | ||||||||||
| Increase (decrease) through transactions with owners, equity |
–
GBP
|
106,000,000
GBP
|
–
GBP
|
3 .1
GBP
|
1 0 9 .1
GBP
|
1 9. 6
GBP
|
15,300,000
GBP
|
–
GBP
|
–
GBP
|
4,300,000
GBP
|
| Purchase of treasury shares |
–
GBP
|
1 1 . 0
GBP
|
–
GBP
|
–
GBP
|
1 1 . 0
GBP
|
1 0. 0
GBP
|
1 0 . 0
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Sale or issue of treasury shares | — | — | — | — | — |
300,000
GBP
|
300,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|