Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||
| Equity | — |
1, 315. 9
GBP
|
— |
1,030,000,000
GBP
|
1,200,000
GBP
|
— | — | — |
2 31.4
GBP
|
— |
5,300,000
GBP
|
4 3.0
GBP
|
3 .1
GBP
|
— |
1,900,000
GBP
|
— |
1,436. 9
GBP
|
— | — | — | — | — | — |
231,400,000
GBP
|
1,000,000
GBP
|
1 ,113 .0
GBP
|
5,500,000
GBP
|
86 .0
GBP
|
3 .1
GBP
|
3 .1
GBP
|
— | — |
9 5 7. 6
GBP
|
0 .7
GBP
|
1,26 1. 3
GBP
|
3. 5
GBP
|
3,100,000
GBP
|
2 31.4
GBP
|
66,200,000
GBP
|
5,800,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
145 .4
GBP
|
— |
–
GBP
|
— | — |
14 5. 4
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
401 . 5
GBP
|
4 01. 5
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
42 . 9
GBP
|
— |
–
GBP
|
— | — |
4 . 9
GBP
|
–
GBP
|
4 3 . 0
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
— |
5 .0
GBP
|
— |
–
GBP
|
32,900,000
GBP
|
1 2 .7
GBP
|
400,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
19. 8
GBP
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
10 2.5
GBP
|
— |
–
GBP
|
— | — |
140 . 5
GBP
|
–
GBP
|
4 3 . 0
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
— |
5,000,000
GBP
|
— |
–
GBP
|
434,400,000
GBP
|
41 4. 2
GBP
|
400,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
19,800,000
GBP
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
7 9.7
GBP
|
— |
–
GBP
|
— | — |
7 9.7
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
78. 6
GBP
|
78. 6
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
16,400,000
GBP
|
— |
–
GBP
|
— | — |
16 .4
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
10. 6
GBP
|
10,600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |