Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-04-30 |
As at 2021-05-01 |
As at 2021-04-30 |
As at 2020-05-01 |
|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||
| Property, plant and equipment [abstract] | ||||
| Property, plant and equipment |
40,500,000
GBP
|
— |
46,000,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | ||||
| Intangible assets and goodwill |
17 .2
GBP
|
— |
17 .2
GBP
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||
| Investments in joint ventures reported in separate financial statements |
190,400,000
GBP
|
— |
281,700,000
GBP
|
— |
| Trade and other receivables [abstract] | ||||
| Trade and other receivables |
145,700,000
GBP
|
— |
7 5.4
GBP
|
— |
| Cash and cash equivalents [abstract] | ||||
| Cash and cash equivalents |
928,900,000
GBP
|
1,428,000
GBP
|
1,428,200,000
GBP
|
1,638,900,000
GBP
|
| Borrowings [abstract] | ||||
| Borrowings |
660. 0
GBP
|
— |
300,000,000
GBP
|
— |
| Borrowings, by type [abstract] | ||||
| Trade and other non-current payables [abstract] | ||||
| Trade and other non-current payables |
719,800,000
GBP
|
— |
330,800,000
GBP
|
— |
| Trade and other current payables [abstract] | ||||
| Trade and other current payables |
1,904,900,000
GBP
|
— |
1,614. 7
GBP
|
— |
| Issued capital [abstract] | ||||
| Issued capital |
6,500,000
GBP
|
— |
6,600,000
GBP
|
— |
| Retained earnings [abstract] | ||||
| Retained earnings |
4,016. 1
GBP
|
— |
4, 055.4
GBP
|
— |
| Miscellaneous equity [abstract] | ||||
| Capital redemption reserve |
25,000,000
GBP
|
— |
2 4.9
GBP
|
— |
| Net assets (liabilities) [abstract] | ||||
| Assets |
6,587 .7
GBP
|
— |
5,552,200,000
GBP
|
— |
| Liabilities |
3,451,600,000
GBP
|
— |
2,37 6.8
GBP
|
— |
| Assets (liabilities) |
3,136. 1
GBP
|
— |
3,17 5.4
GBP
|
— |
| Net current assets (liabilities) [abstract] | ||||
| Current assets |
6,213. 1
GBP
|
— |
5, 164.0
GBP
|
— |
| Current liabilities |
1,969,500,000
GBP
|
— |
1,682,000,000
GBP
|
— |
| Assets less current liabilities [abstract] |