Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
|---|---|---|---|
| Statement of cash flows [abstract] | |||
| Cash flows from (used in) financing activities [abstract] | |||
| Dividends paid to equity holders of parent, classified as financing activities |
31 4. 7
GBP
|
12 2. 0
GBP
|
750,500,000
GBP
|
| Dividends paid to non-controlling interests, classified as financing activities |
114 . 5
GBP
|
8 3 . 3
GBP
|
96 .2
GBP
|
| Proceeds from exercise of options |
4,400,000
GBP
|
–
GBP
|
600,000
GBP
|
| Proceeds from issue of bonds, notes and debentures |
–
GBP
|
915. 5
GBP
|
–
GBP
|