Statement Of Changes In Equity [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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||
| Statement of changes in equity [line items] | ||||||||||||
| Increase (decrease) through exercise of options, equity | — | — |
4,700,000
GBP
|
— | — |
3,300,000
GBP
|
500,000
GBP
|
— |
500,000
GBP
|
— | — | — |
| Purchase of treasury shares |
200,000
GBP
|
200,000
GBP
|
2,000,000
GBP
|
55,400,000
GBP
|
55,400,000
GBP
|
— |
14,500,000
GBP
|
1,300,000
GBP
|
— |
36,900,000
GBP
|
1,300,000
GBP
|
36,900,000
GBP
|
| Cancellation of treasury shares | — | — | — | — | — | — | — | — |
22,400,000
GBP
|
— | — | — |