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 |
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 |
3,189,600,000
GBP
|
— | — | — | — | — | — | — |
3,189,600,000
GBP
|
–
GBP
|
— | — |
2,262,400,000
GBP
|
— | — |
2,262,400,000
GBP
|
–
GBP
|
— | — | — |
| Material income and expense [abstract] | ||||||||||||||||||||
| Gains (losses) on disposals of investments [abstract] | ||||||||||||||||||||
| Gains (losses) on disposals of investments |
3,000,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
3,000,000
GBP
|
— | — |
11,600,000
GBP
|
— | — |
–
GBP
|
11,600,000
GBP
|
— | — | — |
| Miscellaneous other operating income |
87,600,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
87,600,000
GBP
|
— | — |
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
— | — | — |
| Miscellaneous other comprehensive income [abstract] | ||||||||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations |
91,800,000
GBP
|
91,800,000
GBP
|
700,000
GBP
|
–
GBP
|
–
GBP
|
— |
92,500,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
28,000,000
GBP
|
145,400,000
GBP
|
–
GBP
|
–
GBP
|
— | — |
145,400,000
GBP
|
— |
173,400,000
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 |
4,300,000
GBP
|
— | — | — | — | — | — | — |
5,800,000
GBP
|
1,500,000
GBP
|
— | — |
2,000,000
GBP
|
— | — |
2,100,000
GBP
|
100,000
GBP
|
— | — | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,500,000
GBP
|
— | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss |
1,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
8,200,000
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||
| Comprehensive income |
197,400,000
GBP
|
155,400,000
GBP
|
700,000
GBP
|
42,000,000
GBP
|
407,200,000
GBP
|
–
GBP
|
251,100,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
28,000,000
GBP
|
2,025,100,000
GBP
|
1,659,900,000
GBP
|
9,700,000
GBP
|
— | — |
2,015,400,000
GBP
|
–
GBP
|
383,500,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||
| Comprehensive income from continuing operations, attributable to owners of parent |
155,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
497,200,000
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income from discontinued operations, attributable to owners of parent |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,518,200,000
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income, attributable to owners of parent |
155,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
2,015,400,000
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests |
42,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
9,700,000
GBP
|
— | — | — | — | — | — | — |