Statement Of Comprehensive Income [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 |
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 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||
| Profit (loss) |
–
GBP
|
1 67
GBP
|
–
GBP
|
1 67
GBP
|
–
GBP
|
3,000,000
GBP
|
170,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
76,000,000
GBP
|
–
GBP
|
74,000,000
GBP
|
2,000,000
GBP
|
74,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||||
| Other comprehensive income, before tax, gains (losses) from investments in equity instruments | — | — | — | — | — | — |
5,000,000
GBP
|
— | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans | — | — | — | — | — | — |
–
GBP
|
— | — | — |
46,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income that will not be reclassified to profit or loss, before tax | — | — | — | — | — | — |
5,000,000
GBP
|
— | — | — |
30,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||||||||||
| Gains (losses) on exchange differences on translation of foreign operations, before tax | — | — | — | — | — | — |
7,000,000
GBP
|
— | — | — |
83,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income that will be reclassified to profit or loss, before tax | — | — | — | — | — | — |
7,000,000
GBP
|
— | — | — |
81,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — | — | — | — | — | — |
–
GBP
|
— | — | — |
16,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||||||||||||
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — | — | — | — | — |
–
GBP
|
— | — | — |
2,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income |
–
GBP
|
2,000,000
GBP
|
–
GBP
|
–
GBP
|
5,000,000
GBP
|
–
GBP
|
2,000,000
GBP
|
7,000,000
GBP
|
–
GBP
|
–
GBP
|
51,000,000
GBP
|
–
GBP
|
50,000,000
GBP
|
1,000,000
GBP
|
30,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
80,000,000
GBP
|
| Comprehensive income |
–
GBP
|
165,000,000
GBP
|
–
GBP
|
167,000,000
GBP
|
5,000,000
GBP
|
3,000,000
GBP
|
1 68
GBP
|
7,000,000
GBP
|
–
GBP
|
–
GBP
|
25,000,000
GBP
|
–
GBP
|
24,000,000
GBP
|
1,000,000
GBP
|
104,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
80,000,000
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — |
168,000,000
GBP
|
— | — | — |
24,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — |
–
GBP
|
— | — | — |
1,000,000
GBP
|
— | — | — | — | — | — | — | — | — |