Statement Of Changes In Equity [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||
| Equity | — | — | — | — |
222,200,000
GBP
|
22,600,000
GBP
|
— |
15,300,000
GBP
|
4,200,000
GBP
|
9 . 1
GBP
|
— |
37 .4
GBP
|
— | — |
70 . 9
GBP
|
138,500,000
GBP
|
— | — |
1 6 4 .9
GBP
|
— |
242 . 3
GBP
|
7 0 .9
GBP
|
— | — |
3 7. 8
GBP
|
— | — |
22,600,000
GBP
|
— |
15. 3
GBP
|
2,500,000
GBP
|
9. 1
GBP
|
1 8 3 .9
GBP
|
71 . 4
GBP
|
4 0 . 5
GBP
|
2 2.6
GBP
|
2 55 .4
GBP
|
9. 1
GBP
|
1 5.8
GBP
|
1 1 .1
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
— | — |
-
GBP
|
— | — | — |
6,000,000
GBP
|
— |
6 .0
GBP
|
-
GBP
|
— | — |
-
GBP
|
1 3.4
GBP
|
— |
-
GBP
|
— | — |
13 .4
GBP
|
-
GBP
|
— |
-
GBP
|
-
GBP
|
— |
-
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
— | — |
6. 7
GBP
|
— | — | — |
6,000,000
GBP
|
— |
1 2 .7
GBP
|
-
GBP
|
— | — |
-
GBP
|
4,800,000
GBP
|
— |
-
GBP
|
— | — |
1 3.4
GBP
|
-
GBP
|
— |
8 . 6
GBP
|
-
GBP
|
— |
-
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
— | — |
-
GBP
|
— | — | — |
15 .5
GBP
|
— |
15 .5
GBP
|
-
GBP
|
— | — |
-
GBP
|
1 5. 8
GBP
|
— |
-
GBP
|
— | — |
1 5. 8
GBP
|
-
GBP
|
— |
-
GBP
|
-
GBP
|
— |
-
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
-
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
— | — |
-
GBP
|
— | — | — |
1 .7
GBP
|
— |
1 .7
GBP
|
-
GBP
|
— | — |
-
GBP
|
700,000
GBP
|
— |
-
GBP
|
— | — |
0 .7
GBP
|
-
GBP
|
— |
-
GBP
|
-
GBP
|
— |
-
GBP
|
— | — | — | — | — | — | — | — | — | — | — |