Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
84 . 2
GBP
|
38,800,000
GBP
|
–
GBP
|
1 23 .0
GBP
|
1 ,790. 8
GBP
|
1 , 851 .4
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
23,600,000
GBP
|
12 3.0
GBP
|
6 0.6
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
3,027 .0
GBP
|
–
GBP
|
1 ,052.4
GBP
|
3,077,700,000
GBP
|
50,700,000
GBP
|
–
GBP
|
3,027,000,000
GBP
|
2,025,300,000
GBP
|
3,077,700,000
GBP
|
–
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||||||||||
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||||||||||
| Cash flow hedges [abstract] | ||||||||||||||||||||||||||
| Gains (losses) on cash flow hedges, before tax | — | — | — | — | — | — | — | — | — | — | — | — |
43. 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
2 2 .9
GBP
|
— |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||||||||||||||||||
| Income tax relating to cash flow hedges included in other comprehensive income | — | — | — | — | — | — | — | — | — | — | — | — |
8. 1
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
4 .4
GBP
|
— |
| Other comprehensive income |
–
GBP
|
32 9.4
GBP
|
–
GBP
|
363 .7
GBP
|
3 29. 4
GBP
|
— | — |
–
GBP
|
25 .5
GBP
|
–
GBP
|
5,100,000
GBP
|
59. 8
GBP
|
334 . 5
GBP
|
–
GBP
|
–
GBP
|
6. 2
GBP
|
123 .0
GBP
|
–
GBP
|
— |
34 0.3
GBP
|
–
GBP
|
211 .1
GBP
|
3 40. 3
GBP
|
— |
34 0. 3
GBP
|
–
GBP
|
| Comprehensive income |
–
GBP
|
24 5. 2
GBP
|
38,800,000
GBP
|
363,700,000
GBP
|
206 .4
GBP
|
— | — |
–
GBP
|
25,500,000
GBP
|
–
GBP
|
28,700,000
GBP
|
1 82 .8
GBP
|
273. 9
GBP
|
–
GBP
|
–
GBP
|
6. 2
GBP
|
3,1 50.0
GBP
|
–
GBP
|
— |
3 ,41 8 . 0
GBP
|
50,700,000
GBP
|
211 .1
GBP
|
3 , 3 6 7. 3
GBP
|
— |
3 ,41 8 . 0
GBP
|
–
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — | — | — | — | — | — |
28,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— |