Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-12-31 |
As at 2023-12-31 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
502,000,000
GBP
|
499,000,000
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets and goodwill |
7,108,000,000
GBP
|
7,042,000,000
GBP
|
| Investments accounted for using equity method [abstract] | ||
| Investments in associates accounted for using equity method |
37,000,000
GBP
|
44,000,000
GBP
|
| Trade and other non-current receivables [abstract] | ||
| Trade and other non-current receivables |
57,000,000
GBP
|
45,000,000
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
3,000,000
GBP
|
3,000,000
GBP
|
| Non-current derivative financial assets |
6,000,000
GBP
|
57,000,000
GBP
|
| Non-current investments other than investments accounted for using equity method |
21,000,000
GBP
|
21,000,000
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
909,000,000
GBP
|
880,000,000
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
229,000,000
GBP
|
207,000,000
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
925,000,000
GBP
|
1,562,000,000
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current derivative financial assets |
–
GBP
|
14,000,000
GBP
|
| Current investments |
2,000,000
GBP
|
1,000,000
GBP
|
| Classes of other provisions [abstract] | ||
| Other provisions [abstract] | ||
| Other non-current provisions |
304,000,000
GBP
|
357,000,000
GBP
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
2,498,000,000
GBP
|
3,153,000,000
GBP
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current borrowings and current portion of non-current borrowings |
1,166,000,000
GBP
|
1,134,000,000
GBP
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Current borrowings and current portion of non-current borrowings, by type [abstract] | ||
| Trade and other non-current payables [abstract] | ||
| Trade and other non-current payables |
69,000,000
GBP
|
71,000,000
GBP
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
1,118,000,000
GBP
|
1,144,000,000
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
25,000,000
GBP
|
28,000,000
GBP
|
| Non-current derivative financial liabilities |
29,000,000
GBP
|
16,000,000
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Current derivative financial liabilities |
3,000,000
GBP
|
32,000,000
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
25,000,000
GBP
|
25,000,000
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
3,606,000,000
GBP
|
3,518,000,000
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets (liabilities) |
4,228,000,000
GBP
|
4,088,000,000
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
2,087,000,000
GBP
|
2,697,000,000
GBP
|
| Current liabilities |
2,575,000,000
GBP
|
2,579,000,000
GBP
|
| Current assets (liabilities) |
488,000,000
GBP
|
118,000,000
GBP
|
| Assets less current liabilities [abstract] |