Statement Of Comprehensive Income [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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||
| Profit (loss) | — |
202,400,000
GBP
|
173,300,000
GBP
|
— | — | — | — |
29,100,000
GBP
|
— | — | — | — |
155,000,000
GBP
|
— | — | — |
13,700,000
GBP
|
168,700,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will not be reclassified to profit or loss, before tax | — |
1,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
2,900,000
GBP
|
— | — | — | — | — |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — |
6,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
27,100,000
GBP
|
— | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||||||||||
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — |
200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
100,000
GBP
|
— | — | — | — | — |
| Other comprehensive income | — |
63,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
15,400,000
GBP
|
— | — | — | — | — |
| Comprehensive income |
—
GBP
|
138,500,000
GBP
|
— |
100,000
GBP
|
203,400,000
GBP
|
—
GBP
|
138,400,000
GBP
|
— |
65,000,000
GBP
|
—
GBP
|
139,800,000
GBP
|
18,300,000
GBP
|
139,600,000
GBP
|
—
GBP
|
158,100,000
GBP
|
200,000
GBP
|
— | — |
| Comprehensive income attributable to [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — |
138,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
139,800,000
GBP
|
— | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — |
100,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
200,000
GBP
|
— | — | — | — | — |