Statement Of Comprehensive Income [Abstract]
| Concept |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||||||
| Profit (loss) |
1 ,884.4
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1 ,710.5
GBP
|
100,800,000
GBP
|
–
GBP
|
155 .8
GBP
|
1,7 28.6
GBP
|
1 ,783 .6
GBP
|
73,100,000
GBP
|
–
GBP
|
1,7 10.5
GBP
|
–
GBP
|
84. 2
GBP
|
38,800,000
GBP
|
–
GBP
|
123,000,000
GBP
|
1,790,800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1 23.0
GBP
|
2 3.6
GBP
|
1 ,851 . 4
GBP
|
60,600,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||||||||||||||
| Other comprehensive income, net of tax, gains (losses) from investments in equity instruments |
3,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
400,000
GBP
|
| Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans |
116 .4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
59,400,000
GBP
|
| Other comprehensive income that will not be reclassified to profit or loss, net of tax |
11 2 .9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
59. 8
GBP
|
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations |
66 .6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
72,500,000
GBP
|
| Cash flow hedges [abstract] | ||||||||||||||||||||||||||
| Other comprehensive income, net of tax, cash flow hedges |
8,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
22. 5
GBP
|
| Hedges of net investment in foreign operations [abstract] | ||||||||||||||||||||||||||
| Other comprehensive income, net of tax, hedges of net investments in foreign operations |
30,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
43 .1
GBP
|
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax |
4 0. 9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
342,400,000
GBP
|
| Other comprehensive income that will be reclassified to profit or loss, net of tax |
68 .3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
394 .3
GBP
|
| Other comprehensive income |
181 . 2
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
11 2 .9
GBP
|
–
GBP
|
3 4.7
GBP
|
— | — |
181 . 2
GBP
|
–
GBP
|
33. 6
GBP
|
181 . 2
GBP
|
–
GBP
|
32 9.4
GBP
|
–
GBP
|
36 3.7
GBP
|
32 9.4
GBP
|
— |
25. 5
GBP
|
–
GBP
|
–
GBP
|
59. 8
GBP
|
5. 1
GBP
|
— |
334. 5
GBP
|
| Comprehensive income |
1 ,7 03. 2
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,597 .6
GBP
|
100,800,000
GBP
|
34,700,000
GBP
|
— | — |
1 ,6 02 .4
GBP
|
73. 1
GBP
|
33,600,000
GBP
|
1 , 529. 3
GBP
|
–
GBP
|
24 5 . 2
GBP
|
38,800,000
GBP
|
363,700,000
GBP
|
20 6. 4
GBP
|
— |
25. 5
GBP
|
–
GBP
|
–
GBP
|
182. 8
GBP
|
28 .7
GBP
|
— |
27 3 .9
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests |
100. 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
28 .7
GBP
|