Profit Or Loss [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | ||||||||||||||||
| Profit (loss) [abstract] | ||||||||||||||||
| Revenue | — | — |
–
GBP
|
1,889,600,000
GBP
|
— | — |
1,889,600,000
GBP
|
— | — | — |
1,390,300,000
GBP
|
— |
–
GBP
|
1,390,300,000
GBP
|
— | — |
| Cost of sales | — | — |
–
GBP
|
950,700,000
GBP
|
— | — |
950,700,000
GBP
|
— | — | — |
758,200,000
GBP
|
— |
–
GBP
|
758,200,000
GBP
|
— | — |
| Gross profit | — | — |
–
GBP
|
938,900,000
GBP
|
— | — |
938,900,000
GBP
|
— | — | — |
632,100,000
GBP
|
— |
–
GBP
|
632,100,000
GBP
|
— | — |
| Profit (loss) from operating activities | — | — |
30,400,000
GBP
|
468,600,000
GBP
|
— | — |
438,200,000
GBP
|
— | — | — |
290,000,000
GBP
|
— |
29,600,000
GBP
|
319,600,000
GBP
|
— | — |
| Finance income | — | — |
–
GBP
|
1,500,000
GBP
|
— | — |
1,500,000
GBP
|
— | — | — |
500,000
GBP
|
— |
–
GBP
|
500,000
GBP
|
— | — |
| Finance costs | — | — |
3,300,000
GBP
|
24,900,000
GBP
|
— | — |
28,200,000
GBP
|
— | — | — |
21,000,000
GBP
|
— |
1,500,000
GBP
|
19,500,000
GBP
|
— | — |
| Profit (loss) before tax | — | — |
33,700,000
GBP
|
445,200,000
GBP
|
— | — |
411,500,000
GBP
|
— | — | — |
269,500,000
GBP
|
— |
31,100,000
GBP
|
300,600,000
GBP
|
— | — |
| Tax expense (income) | — | — |
5,700,000
GBP
|
94,400,000
GBP
|
— | — |
88,700,000
GBP
|
— | — | — |
67,900,000
GBP
|
— |
4,500,000
GBP
|
72,400,000
GBP
|
— | — |
| Profit (loss) |
2,000,000
GBP
|
–
GBP
|
28,000,000
GBP
|
350,800,000
GBP
|
–
GBP
|
–
GBP
|
322,800,000
GBP
|
320,800,000
GBP
|
201,600,000
GBP
|
–
GBP
|
201,600,000
GBP
|
–
GBP
|
26,600,000
GBP
|
228,200,000
GBP
|
–
GBP
|
–
GBP
|
| Profit (loss), attributable to [abstract] | ||||||||||||||||
| Profit (loss), attributable to owners of parent | — | — |
28,000,000
GBP
|
348,800,000
GBP
|
— | — |
320,800,000
GBP
|
— | — | — |
201,600,000
GBP
|
— |
26,600,000
GBP
|
228,200,000
GBP
|
— | — |
| Profit (loss), attributable to non-controlling interests | — | — |
–
GBP
|
2,000,000
GBP
|
— | — |
2,000,000
GBP
|
— | — | — |
–
GBP
|
— |
–
GBP
|
–
GBP
|
— | — |
| Earnings per share [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Earnings per share [abstract] | ||||||||||||||||
| Earnings per share [line items] | ||||||||||||||||
| Basic earnings per share [abstract] | ||||||||||||||||
| Basic earnings (loss) per share | — | — | — |
2.500
|
— | — |
2.300
|
— | — | — |
1.551
|
— | — |
1.755
|
— | — |
| Diluted earnings per share [abstract] | ||||||||||||||||
| Diluted earnings (loss) per share | — | — | — |
2.495
|
— | — |
2.295
|
— | — | — |
1.548
|
— | — |
1.753
|
— | — |