Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-07-31 |
As at 2022-07-31 |
As at 2021-07-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
31,700,000
GBP
|
34,200,000
GBP
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in subsidiaries reported in separate financial statements |
–
GBP
|
–
GBP
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments accounted for using equity method |
4,900,000
GBP
|
9,300,000
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current net defined benefit asset |
2,500,000
GBP
|
7,100,000
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
88,300,000
GBP
|
114,600,000
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
4,575,600,000
GBP
|
4,423,600,000
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
362,000,000
GBP
|
375,300,000
GBP
|
460,300,000
GBP
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
130,000,000
GBP
|
130,000,000
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other non-current payables [abstract] | |||
| Trade and other non-current payables |
107,300,000
GBP
|
106,600,000
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
900,800,000
GBP
|
930,200,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
15,000,000
GBP
|
15,400,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
3,242,700,000
GBP
|
3,148,900,000
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Capital redemption reserve |
20,400,000
GBP
|
20,000,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
5,114,100,000
GBP
|
4,985,100,000
GBP
|
— |
| Liabilities |
1,652,500,000
GBP
|
1,617,300,000
GBP
|
— |
| Assets (liabilities) |
3,461,600,000
GBP
|
3,367,800,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
5,034,700,000
GBP
|
4,913,500,000
GBP
|
— |
| Current liabilities |
1,005,500,000
GBP
|
971,000,000
GBP
|
— |
| Assets less current liabilities [abstract] |