Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2020-12-31 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
120,900,000
GBP
|
122,700,000
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets and goodwill |
2,766,800,000
GBP
|
2,441,900,000
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
63,600,000
GBP
|
400,000
GBP
|
| Non-current derivative financial assets |
6,900,000
GBP
|
17,000,000
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
1,431,000,000
GBP
|
1,395,800,000
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
1,474,000,000
GBP
|
1,432,200,000
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
776,900,000
GBP
|
944,300,000
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current derivative financial assets |
14,900,000
GBP
|
12,600,000
GBP
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
1,433,700,000
GBP
|
1,615,200,000
GBP
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current borrowings |
111,900,000
GBP
|
79,900,000
GBP
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Trade and other non-current payables [abstract] | ||
| Other non-current payables |
72,900,000
GBP
|
50,200,000
GBP
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
1,921,300,000
GBP
|
1,836,300,000
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
32,400,000
GBP
|
45,200,000
GBP
|
| Non-current derivative financial liabilities |
27,900,000
GBP
|
800,000
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Current derivative financial liabilities |
10,400,000
GBP
|
23,600,000
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
108,400,000
GBP
|
108,300,000
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
2,151,500,000
GBP
|
1,799,700,000
GBP
|
| Accumulated other comprehensive income [abstract] | ||
| Reserve of exchange differences on translation |
269,200,000
GBP
|
190,900,000
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets |
7,114,100,000
GBP
|
6,829,400,000
GBP
|
| Liabilities |
4,910,200,000
GBP
|
4,910,300,000
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
3,704,800,000
GBP
|
3,791,500,000
GBP
|
| Current liabilities |
2,774,900,000
GBP
|
2,667,700,000
GBP
|
| Assets less current liabilities [abstract] |