Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-04-30 |
As at 2022-04-30 |
As at 2021-04-30 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
34,600,000
GBP
|
40,500,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
17 .2
GBP
|
17 .2
GBP
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments in joint ventures accounted for using equity method |
223,400,000
GBP
|
190,400,000
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
92,300,000
GBP
|
145,700,000
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
5,302. 1
GBP
|
5,134. 0
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
1,070. 4
GBP
|
928,900,000
GBP
|
1,428,200,000
GBP
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
660,000,000
GBP
|
660,000,000
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other non-current payables [abstract] | |||
| Trade and other non-current payables |
863,400,000
GBP
|
719,800,000
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
1,801,600,000
GBP
|
1,904,900,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
6,300,000
GBP
|
6,500,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
4,212,300,000
GBP
|
4,016. 1
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Capital redemption reserve |
25,200,000
GBP
|
25,000,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
6,859. 7
GBP
|
6,587 . 7
GBP
|
— |
| Liabilities |
3,527 .4
GBP
|
3,451,600,000
GBP
|
— |
| Assets (liabilities) |
3,332,300,000
GBP
|
3, 136. 1
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
6,464,800,000
GBP
|
6,213. 1
GBP
|
— |
| Current liabilities |
1,886,000,000
GBP
|
1,969,500,000
GBP
|
— |
| Assets less current liabilities [abstract] |