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 |
73 6 .8
GBP
|
5 48.0
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets and goodwill |
1, 174 . 0
GBP
|
3 9 4 .1
GBP
|
| Investments accounted for using equity method [abstract] | ||
| Investments accounted for using equity method |
22. 2
GBP
|
4 .9
GBP
|
| Trade and other non-current receivables [abstract] | ||
| Trade and other non-current receivables |
53. 4
GBP
|
4 5.4
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
10 3. 8
GBP
|
13 5 . 3
GBP
|
| Non-current derivative financial assets |
17. 3
GBP
|
3. 0
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
816 . 8
GBP
|
324,100,000
GBP
|
| Categories of non-current financial assets [abstract] | ||
| Non-current financial assets at fair value through other comprehensive income [abstract] | ||
| Non-current financial assets at fair value through other comprehensive income |
3,300,000
GBP
|
4,800,000
GBP
|
| Categories of current financial assets [abstract] | ||
| Current financial assets at fair value through other comprehensive income [abstract] | ||
| Current financial assets at fair value through other comprehensive income |
200,000
GBP
|
0. 2
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
2 , 375 . 8
GBP
|
1,1 3 4 . 7
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash [abstract] | ||
| Cash |
6 4 0.7
GBP
|
5 01. 8
GBP
|
| Cash equivalents [abstract] | ||
| Short-term deposits, classified as cash equivalents |
423,500,000
GBP
|
94 .6
GBP
|
| Cash and cash equivalents |
1, 0 6 4 . 2
GBP
|
596. 4
GBP
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | ||
| Non-current assets or disposal groups classified as held for sale |
19. 0
GBP
|
4,800,000
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current derivative financial assets |
3 6 .9
GBP
|
24 .6
GBP
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
895,600,000
GBP
|
210 . 0
GBP
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current borrowings |
546,300,000
GBP
|
7. 6
GBP
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Trade and other non-current payables [abstract] | ||
| Trade and other non-current payables |
6 0 . 4
GBP
|
6 3 . 2
GBP
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
2 ,898. 0
GBP
|
1, 5 4 8 . 3
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
10 . 7
GBP
|
5 3 .1
GBP
|
| Non-current derivative financial liabilities |
1. 4
GBP
|
–
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Current derivative financial liabilities |
3 8 .1
GBP
|
31,900,000
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
3 7. 6
GBP
|
3 8.5
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
8 20 . 4
GBP
|
1, 0 0 8 .7
GBP
|
| Miscellaneous equity [abstract] | ||
| Capital redemption reserve |
14 3 . 0
GBP
|
1 4 2 .1
GBP
|
| Merger reserve |
315 . 8
GBP
|
–
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets |
6 ,9 6 3 . 7
GBP
|
3 , 5 5 8 .1
GBP
|
| Liabilities |
5, 3 9 6. 7
GBP
|
2 , 4 2 7. 6
GBP
|
| Assets (liabilities) |
1 , 5 6 7. 0
GBP
|
1,13 0 . 5
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
4,353,700,000
GBP
|
2 ,093.8
GBP
|
| Current liabilities |
3 , 710 . 6
GBP
|
1, 74 2 . 2
GBP
|
| Assets less current liabilities [abstract] |