Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
As at 2023-01-01 |
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 |
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 |
2022-01-01 to 2022-12-31 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
As at 2022-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — | — |
3,318,500,000
GBP
|
— | — |
1,18 4.8
GBP
|
1,500,000
GBP
|
1,199,500,000
GBP
|
— | — |
361,000,000
GBP
|
— |
173,400,000
GBP
|
14,700,000
GBP
|
1,597,800,000
GBP
|
1,300,000
GBP
|
1,116,200,000
GBP
|
17,400,000
GBP
|
1,133,600,000
GBP
|
1,597,800,000
GBP
|
17 3.6
GBP
|
360,800,000
GBP
|
3,249,700,000
GBP
|
3,24 9.7
GBP
|
— | — | — | — | — | — |
1,133,600,000
GBP
|
— |
360,800,000
GBP
|
1,300,000
GBP
|
1,116,200,000
GBP
|
17,400,000
GBP
|
173,600,000
GBP
|
1,597,800,000
GBP
|
— |
1,094,800,000
GBP
|
361,100,000
GBP
|
111,200,000
GBP
|
2,390,600,000
GBP
|
1,098,200,000
GBP
|
3,400,000
GBP
|
823,500,000
GBP
|
-
GBP
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
223,400,000
GBP
|
— | — |
223,400,000
GBP
|
— | — | — | — |
223,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
204,300,000
GBP
|
204,300,000
GBP
|
204,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
1,700,000
GBP
|
— | — |
1,700,000
GBP
|
— | — | — | — |
1,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
13,900,000
GBP
|
13,900,000
GBP
|
13,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
221,700,000
GBP
|
— | — |
221,700,000
GBP
|
— | — | — | — |
221,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
190,400,000
GBP
|
190,400,000
GBP
|
190,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Issue of equity |
200,000
GBP
|
— | — | — | — | — | — | — |
1,400,000
GBP
|
200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
110,400,000
GBP
|
— | — |
110,400,000
GBP
|
— | — | — | — |
110,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
138,900,000
GBP
|
138,900,000
GBP
|
138,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Decrease through other distributions to owners, equity | — | — | — |
53,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
3,300,000
GBP
|
— | — | — | — | — | — | — |
3,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
400,000
GBP
|
400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
8,000,000
GBP
|
— | — |
8,000,000
GBP
|
— | — | — | — |
8,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
6,300,000
GBP
|
6,300,000
GBP
|
6,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) in equity |
152,900,000
GBP
|
2,700,000
GBP
|
— |
155,800,000
GBP
|
200,000
GBP
|
— | — | — |
153,100,000
GBP
|
200,000
GBP
|
— |
200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
62,400,000
GBP
|
14,000,000
GBP
|
155,000,000
GBP
|
668,700,000
GBP
|
169,000,000
GBP
|
1,300,000
GBP
|
— |
77 4.3
GBP
|
— | — | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — |