Statement Of Changes In Equity [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||
| Statement of changes in equity [line items] | ||||||||||
| Dividends recognised as distributions to owners of parent |
56,100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
56,100,000
GBP
|
–
GBP
|
48,100,000
GBP
|
48,100,000
GBP
|
–
GBP
|
–
GBP
|
| Increase (decrease) through exercise of options, equity |
19,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
19,500,000
GBP
|
–
GBP
|
4,000,000
GBP
|
4,000,000
GBP
|
–
GBP
|
–
GBP
|
| Decrease (increase) through tax on share-based payment transactions, equity |
11,400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
11,400,000
GBP
|
–
GBP
|
2,700,000
GBP
|
2,700,000
GBP
|
–
GBP
|
–
GBP
|
| Purchase of treasury shares |
47,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
47,200,000
GBP
|
–
GBP
|
11,300,000
GBP
|
11,300,000
GBP
|
–
GBP
|
–
GBP
|