Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-09-30 |
As at 2023-09-30 |
As at 2022-09-30 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
1,561,000,000
GBP
|
1,617,000,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
15,938,000,000
GBP
|
16,944,000,000
GBP
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments accounted for using equity method |
56,000,000
GBP
|
55,000,000
GBP
|
— |
| Trade and other non-current receivables [abstract] | |||
| Trade and other non-current receivables |
118,000,000
GBP
|
63,000,000
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current net defined benefit asset |
376,000,000
GBP
|
414,000,000
GBP
|
— |
| Non-current derivative financial assets |
330,000,000
GBP
|
824,000,000
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
2,645,000,000
GBP
|
2,490,000,000
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
4,080,000,000
GBP
|
4,522,000,000
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
1,078,000,000
GBP
|
1,345,000,000
GBP
|
1,850,000,000
GBP
|
| Miscellaneous current assets [abstract] | |||
| Current derivative financial assets |
144,000,000
GBP
|
126,000,000
GBP
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
7,506,000,000
GBP
|
7,882,000,000
GBP
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
1,191,000,000
GBP
|
1,499,000,000
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other non-current payables [abstract] | |||
| Trade and other non-current payables |
86,000,000
GBP
|
27,000,000
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
9,497,000,000
GBP
|
9,579,000,000
GBP
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current net defined benefit liability |
819,000,000
GBP
|
807,000,000
GBP
|
— |
| Non-current derivative financial liabilities |
622,000,000
GBP
|
829,000,000
GBP
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
187,000,000
GBP
|
174,000,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
91,000,000
GBP
|
97,000,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
479,000,000
GBP
|
674,000,000
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
19,000,000
GBP
|
755,000,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
27,826,000,000
GBP
|
29,491,000,000
GBP
|
— |
| Liabilities |
21,797,000,000
GBP
|
22,849,000,000
GBP
|
— |
| Assets (liabilities) |
6,029,000,000
GBP
|
6,642,000,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
8,196,000,000
GBP
|
8,595,000,000
GBP
|
— |
| Current liabilities |
11,462,000,000
GBP
|
11,899,000,000
GBP
|
— |
| Assets less current liabilities [abstract] |