Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2022-12-31 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
499,000,000
GBP
|
495,000,000
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets and goodwill |
7,042,000,000
GBP
|
7,303,000,000
GBP
|
| Investments accounted for using equity method [abstract] | ||
| Investments in associates accounted for using equity method |
44,000,000
GBP
|
63,000,000
GBP
|
| Trade and other non-current receivables [abstract] | ||
| Trade and other non-current receivables |
45,000,000
GBP
|
90,000,000
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 |
57,000,000
GBP
|
21,000,000
GBP
|
| Non-current investments other than investments accounted for using equity method |
21,000,000
GBP
|
23,000,000
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
880,000,000
GBP
|
830,000,000
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
207,000,000
GBP
|
200,000,000
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
1,562,000,000
GBP
|
2,170,000,000
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current derivative financial assets |
14,000,000
GBP
|
–
GBP
|
| Current investments |
1,000,000
GBP
|
1,000,000
GBP
|
| Classes of other provisions [abstract] | ||
| Other provisions [abstract] | ||
| Other non-current provisions |
357,000,000
GBP
|
381,000,000
GBP
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
3,153,000,000
GBP
|
3,574,000,000
GBP
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current borrowings and current portion of non-current borrowings |
1,134,000,000
GBP
|
1,345,000,000
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 |
71,000,000
GBP
|
90,000,000
GBP
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
1,144,000,000
GBP
|
1,166,000,000
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
28,000,000
GBP
|
30,000,000
GBP
|
| Non-current derivative financial liabilities |
16,000,000
GBP
|
92,000,000
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Current derivative financial liabilities |
32,000,000
GBP
|
–
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
25,000,000
GBP
|
25,000,000
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
3,518,000,000
GBP
|
3,302,000,000
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets (liabilities) |
4,088,000,000
GBP
|
4,098,000,000
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
2,697,000,000
GBP
|
3,237,000,000
GBP
|
| Current liabilities |
2,579,000,000
GBP
|
2,839,000,000
GBP
|
| Current assets (liabilities) |
118,000,000
GBP
|
398,000,000
GBP
|
| Assets less current liabilities [abstract] |