Statement Of Financial Position [Abstract]
| Concept |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — | — | — | — |
14,618,700,000
GBP
|
— | — | — | — | — | — | — |
13,2 54.3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — | — | — | — | — | — |
1 , 2 39. 5
GBP
|
— | — | — | — | — | — | — |
1,64 3.5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — | — | — | — | — |
18 , 824 .6
GBP
|
— | — | — | — | — | — | — |
17 ,070.7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||||||||||||
| Current inventories | — | — | — | — | — | — | — | — | — |
266 .6
GBP
|
— | — | — | — | — | — | — |
2 3 4 .9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables | — | — | — | — | — | — | — | — | — |
2, 21 1 .0
GBP
|
— | — | — | — | — | — | — |
1,4 88. 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — | — | — |
1 ,049. 3
GBP
|
— | — | — | — | — | — | — |
1 ,60 0. 2
GBP
|
— | — | — | — | — | — | — | — |
16 4.6
GBP
|
— | — | — | — |
| Current assets | — | — | — | — | — | — | — | — | — |
6, 936 . 8
GBP
|
— | — | — | — | — | — | — |
4 , 520 .9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — | — | — | — |
25 ,76 1 . 4
GBP
|
— | — | — | — | — | — | — |
2 1 , 591 . 6
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — | — | — | — |
536 . 5
GBP
|
— | — | — | — | — | — | — |
524 . 5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — | — | — | — |
6 , 57 7. 3
GBP
|
— | — | — | — | — | — | — |
3 ,92 1 . 1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium | — | — | — | — | — | — | — | — | — |
835. 1
GBP
|
— | — | — | — | — | — | — |
8 4 7. 1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — | — | — | — |
40,600,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
49. 2
GBP
|
9, 1 33 . 2
GBP
|
536. 5
GBP
|
6,600,000
GBP
|
835. 1
GBP
|
7 7. 5
GBP
|
6 , 57 7. 3
GBP
|
8, 08 2.2
GBP
|
1 ,051 .0
GBP
|
9, 17 3 . 8
GBP
|
40 .6
GBP
|
49. 2
GBP
|
6,68 1 . 1
GBP
|
1 , 47 2 . 4
GBP
|
1 33.6
GBP
|
3 ,921 . 1
GBP
|
5, 208.7
GBP
|
6 ,681 . 1
GBP
|
524. 5
GBP
|
8 47. 1
GBP
|
–
GBP
|
400,000
GBP
|
1 , 169.7
GBP
|
111,100,000
GBP
|
3,750,400,000
GBP
|
6,400,000
GBP
|
4,92 0. 1
GBP
|
49. 2
GBP
|
875,600,000
GBP
|
523. 1
GBP
|
2 , 4 07. 2
GBP
|
| Liabilities [abstract] | |||||||||||||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||||||||||||||||||
| Non-current provisions | — | — | — | — | — | — | — | — | — |
1 , 0 1 7. 9
GBP
|
— | — | — | — | — | — | — |
7 93 . 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other non-current payables | — | — | — | — | — | — | — | — | — |
842 . 4
GBP
|
— | — | — | — | — | — | — |
722,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — | — | — | — | — |
1 ,6 45 .6
GBP
|
— | — | — | — | — | — | — |
7 74. 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — | — | — | — | — |
1 1 ,929.4
GBP
|
— | — | — | — | — | — | — |
1 1 ,4 01 . 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||||||||||||
| Current provisions [abstract] | |||||||||||||||||||||||||||||||
| Current provisions | — | — | — | — | — | — | — | — | — |
93 . 3
GBP
|
— | — | — | — | — | — | — |
79. 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables | — | — | — | — | — | — | — | — | — |
2 ,6 72 . 6
GBP
|
— | — | — | — | — | — | — |
1 ,9 87. 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities included in disposal groups classified as held for sale | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — |
253,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — | — | — | — | — | — | — | — | — |
4,658,200,000
GBP
|
— | — | — | — | — | — | — |
3 , 50 9. 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — | — | — | — |
1 6 , 5 8 7. 6
GBP
|
— | — | — | — | — | — | — |
14 ,9 10. 5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |