Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2021-12-31 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
2,599,000,000
GBP
|
2,528,000,000
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets and goodwill |
6,846,000,000
GBP
|
7,390,000,000
GBP
|
| Investments accounted for using equity method [abstract] | ||
| Investments accounted for using equity method |
62,000,000
GBP
|
87,000,000
GBP
|
| Trade and other non-current receivables [abstract] | ||
| Other non-current receivables |
670,000,000
GBP
|
523,000,000
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current derivative financial assets |
36,000,000
GBP
|
47,000,000
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
1,426,000,000
GBP
|
1,184,000,000
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
1,025,000,000
GBP
|
893,000,000
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
355,000,000
GBP
|
473,000,000
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current derivative financial assets |
38,000,000
GBP
|
23,000,000
GBP
|
| Miscellaneous assets [abstract] | ||
| Net defined benefit asset |
93,000,000
GBP
|
184,000,000
GBP
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
1,433,000,000
GBP
|
903,000,000
GBP
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current borrowings |
63,000,000
GBP
|
462,000,000
GBP
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Trade and other non-current payables [abstract] | ||
| Other non-current payables |
431,000,000
GBP
|
390,000,000
GBP
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
2,347,000,000
GBP
|
2,051,000,000
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
581,000,000
GBP
|
645,000,000
GBP
|
| Non-current derivative financial liabilities |
141,000,000
GBP
|
79,000,000
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Current derivative financial liabilities |
86,000,000
GBP
|
119,000,000
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
309,000,000
GBP
|
333,000,000
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
4,379,000,000
GBP
|
5,319,000,000
GBP
|
| Accumulated other comprehensive income [abstract] | ||
| Reserve of exchange differences on translation |
638,000,000
GBP
|
76,000,000
GBP
|
| Miscellaneous equity [abstract] | ||
| Capital redemption reserve |
753,000,000
GBP
|
729,000,000
GBP
|
| Merger reserve |
109,000,000
GBP
|
109,000,000
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets |
13,987,000,000
GBP
|
14,022,000,000
GBP
|
| Liabilities |
6,819,000,000
GBP
|
6,482,000,000
GBP
|
| Assets (liabilities) |
7,168,000,000
GBP
|
7,540,000,000
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
2,873,000,000
GBP
|
2,584,000,000
GBP
|
| Current liabilities |
2,978,000,000
GBP
|
3,124,000,000
GBP
|
| Current assets (liabilities) |
105,000,000
GBP
|
540,000,000
GBP
|
| Assets less current liabilities [abstract] | ||
| Net debt |
1,139,000,000
GBP
|
950,000,000
GBP
|