Statement Of Comprehensive Income [Abstract]
| Concept |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
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 |
2023-04-01 to 2024-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||||||
| Profit (loss) |
1 , 332 .9
GBP
|
1 , 1 8 9 . 4
GBP
|
6 9 . 8
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1 , 1 8 9 . 4
GBP
|
1 , 2 6 3 . 1
GBP
|
7 3 . 7
GBP
|
–
GBP
|
3 41 .4
GBP
|
1 ,674. 3
GBP
|
–
GBP
|
1, 884.4
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1 , 7 1 0 . 5
GBP
|
–
GBP
|
1 0 0 . 8
GBP
|
1 , 7 8 3 . 6
GBP
|
7 3 . 1
GBP
|
1,72 8.6
GBP
|
155,800,000
GBP
|
–
GBP
|
1 , 7 1 0 . 5
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 |
300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
3,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans |
39,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
116,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will not be reclassified to profit or loss, net of tax |
15,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income that will not be reclassified to profit or loss, net of tax |
55. 1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 12.9
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 |
42 . 9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
66 .6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Cash flow hedges [abstract] | ||||||||||||||||||||||||||
| Other comprehensive income, net of tax, cash flow hedges |
46,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
8,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Hedges of net investment in foreign operations [abstract] | ||||||||||||||||||||||||||
| Other comprehensive income, net of tax, hedges of net investments in foreign operations |
36,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
30,900,000
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 |
16,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
4 0.9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income that will be reclassified to profit or loss, net of tax |
23,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
6 8. 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
78. 3
GBP
|
55,100,000
GBP
|
4,100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
7 4.2
GBP
|
74,200,000
GBP
|
–
GBP
|
25. 1
GBP
|
— | — |
6,000,000
GBP
|
18 1.2
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
112,900,000
GBP
|
34,700,000
GBP
|
–
GBP
|
181,200,000
GBP
|
–
GBP
|
— | — |
33,600,000
GBP
|
181,200,000
GBP
|
| Comprehensive income |
1 ,41 1 . 2
GBP
|
1 , 244. 5
GBP
|
73. 9
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1 , 263.6
GBP
|
1 ,337 . 3
GBP
|
73 .7
GBP
|
25 . 1
GBP
|
— | — |
6 .0
GBP
|
1,7 0 3.2
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,597,600,000
GBP
|
3 4.7
GBP
|
100,800,000
GBP
|
1 ,602.4
GBP
|
7 3.1
GBP
|
— | — |
33,600,000
GBP
|
1 ,529. 3
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests |
73,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
10 0. 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |