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 |
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 |
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 |
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 | — | — |
147,000,000
GBP
|
— | — | — | — | — | — |
147,000,000
GBP
|
— |
147,000,000
GBP
|
128,000,000
GBP
|
128,000,000
GBP
|
— | — | — | — |
128,000,000
GBP
|
| Dividends recognised as distributions to non-controlling interests | — | — | — | — | — | — | — | — | — | — |
17,000,000
GBP
|
17,000,000
GBP
|
6,000,000
GBP
|
— | — | — | — |
6,000,000
GBP
|
— |
| Increase (decrease) through acquisition of subsidiary, equity | — | — | — | — | — | — | — | — | — | — | — | — |
64,000,000
GBP
|
— | — | — | — |
64,000,000
GBP
|
— |
| Purchase of treasury shares |
14,000,000
GBP
|
14,000,000
GBP
|
— |
14,000,000
GBP
|
151,000,000
GBP
|
2,000,000
GBP
|
151,000,000
GBP
|
151,000,000
GBP
|
2,000,000
GBP
|
— | — | — | — | — |
19,000,000
GBP
|
19,000,000
GBP
|
19,000,000
GBP
|
— | — |