Analysis Of Income And Expense [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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||||||||
| Revenue |
1 , 4 87. 5
GBP
|
–
GBP
|
1 , 4 8 7. 5
GBP
|
— | — | — | — | — | — | — | — | — |
1, 39 6 .3
GBP
|
–
GBP
|
— |
1 , 396 . 3
GBP
|
— | — | — | — | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||||||||||||
| Operating expense |
1, 333 .9
GBP
|
1 0. 5
GBP
|
1,344,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
1 , 24 4 . 8
GBP
|
7. 0
GBP
|
— |
1,251,800,000
GBP
|
— | — | — | — | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method |
2,600,000
GBP
|
–
GBP
|
2 .6
GBP
|
— | — | — | — | — | — | — | — | — |
3,500,000
GBP
|
–
GBP
|
— |
3,500,000
GBP
|
— | — | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||||||||||||
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — |
100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
0. 2
GBP
|
— | — | — | — | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||
| Comprehensive income | — | — |
100. 9
GBP
|
100. 8
GBP
|
100,000
GBP
|
105 .5
GBP
|
–
GBP
|
4 . 1
GBP
|
–
GBP
|
–
GBP
|
0 . 6
GBP
|
–
GBP
|
— | — |
–
GBP
|
12 1 .7
GBP
|
112. 5
GBP
|
100,000
GBP
|
1 .1
GBP
|
–
GBP
|
121 .6
GBP
|
–
GBP
|
10. 2
GBP
|
–
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
100. 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
121 .6
GBP
|
— | — | — | — | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — |
100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
100,000
GBP
|
— | — | — | — | — | — | — | — |