Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||
| Increase (decrease) through exercise of options, equity |
–
GBP
|
–
GBP
|
25,300,000
GBP
|
9,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
16,100,000
GBP
|
9,200,000
GBP
|
–
GBP
|
22,200,000
GBP
|
6,200,000
GBP
|
6,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
16,000,000
GBP
|
–
GBP
|
| Decrease (increase) through tax on share-based payment transactions, equity |
–
GBP
|
–
GBP
|
–
GBP
|
3,100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
3,100,000
GBP
|
3,100,000
GBP
|
–
GBP
|
–
GBP
|
4,600,000
GBP
|
4,600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
4,600,000
GBP
|
–
GBP
|
| Purchase of treasury shares |
–
GBP
|
–
GBP
|
38,000,000
GBP
|
38,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
38,000,000
GBP
|
–
GBP
|
34,400,000
GBP
|
34,400,000
GBP
|
34,400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Reduction of issued capital |
–
GBP
|
75,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
75,000,000
GBP
|
–
GBP
|
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