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 |
159,400,000
GBP
|
137,200,000
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets and goodwill |
3,242,100,000
GBP
|
3,093,900,000
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
69,000,000
GBP
|
60,500,000
GBP
|
| Non-current derivative financial assets |
100,000
GBP
|
–
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
1,578,500,000
GBP
|
1,557,400,000
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
1,621,100,000
GBP
|
1,748,600,000
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
1,426,100,000
GBP
|
1,504,000,000
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current derivative financial assets |
11,700,000
GBP
|
19,000,000
GBP
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
1,417,100,000
GBP
|
1,574,000,000
GBP
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current borrowings |
130,000,000
GBP
|
161,000,000
GBP
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Trade and other non-current payables [abstract] | ||
| Other non-current payables |
176,100,000
GBP
|
117,200,000
GBP
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
2,071,600,000
GBP
|
2,249,400,000
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
19,600,000
GBP
|
20,600,000
GBP
|
| Non-current derivative financial liabilities |
78,700,000
GBP
|
100,500,000
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Current derivative financial liabilities |
25,700,000
GBP
|
18,300,000
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
108,600,000
GBP
|
108,500,000
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
2,806,000,000
GBP
|
2,469,500,000
GBP
|
| Accumulated other comprehensive income [abstract] | ||
| Reserve of exchange differences on translation |
170,200,000
GBP
|
74,200,000
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets |
8,747,200,000
GBP
|
8,666,800,000
GBP
|
| Liabilities |
5,780,900,000
GBP
|
5,945,900,000
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
4,646,100,000
GBP
|
4,841,600,000
GBP
|
| Current liabilities |
3,310,600,000
GBP
|
3,465,300,000
GBP
|
| Assets less current liabilities [abstract] |