Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-09-30 |
As at 2022-09-30 |
As at 2021-09-30 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
8,600,000
GBP
|
4,200,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
1,000,000
GBP
|
500,000
GBP
|
— |
| Investment property [abstract] | |||
| Investment property |
2,948,900,000
GBP
|
2,775,900,000
GBP
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in joint ventures reported in separate financial statements |
75,200,000
GBP
|
38,500,000
GBP
|
— |
| Investments in associates reported in separate financial statements |
15,800,000
GBP
|
16,700,000
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current net defined benefit asset |
9,600,000
GBP
|
9,800,000
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
34,000,000
GBP
|
40,500,000
GBP
|
— |
| Categories of non-current financial assets [abstract] | |||
| Non-current financial assets at fair value through profit or loss [abstract] | |||
| Non-current financial assets at fair value through profit or loss |
67,000,000
GBP
|
69,100,000
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
392,200,000
GBP
|
453,800,000
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
121,000,000
GBP
|
95,900,000
GBP
|
317,600,000
GBP
|
| Miscellaneous current assets [abstract] | |||
| Current derivative financial assets |
45,300,000
GBP
|
56,500,000
GBP
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
1,533,500,000
GBP
|
1,317,600,000
GBP
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
–
GBP
|
40,000,000
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other non-current payables [abstract] | |||
| Trade and other non-current payables |
6,900,000
GBP
|
2,200,000
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
120,700,000
GBP
|
105,900,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
37,200,000
GBP
|
37,100,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
1,033,200,000
GBP
|
1,059,600,000
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of cash flow hedges |
20,000,000
GBP
|
32,100,000
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Capital redemption reserve |
300,000
GBP
|
300,000
GBP
|
— |
| Merger reserve |
20,100,000
GBP
|
20,100,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
3,722,300,000
GBP
|
3,579,100,000
GBP
|
— |
| Liabilities |
1,793,700,000
GBP
|
1,612,300,000
GBP
|
— |
| Assets (liabilities) |
1,928,600,000
GBP
|
1,966,800,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
592,500,000
GBP
|
663,200,000
GBP
|
— |
| Current liabilities |
129,900,000
GBP
|
154,500,000
GBP
|
— |
| Assets less current liabilities [abstract] |