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 |
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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | |||||||||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — |
307,000,000
GBP
|
–
GBP
|
307,000,000
GBP
|
— | — |
381,000,000
GBP
|
–
GBP
|
— |
–
GBP
|
381,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
232,000,000
GBP
|
232,000,000
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) on remeasurements of defined benefit plans | — | — | — | — | — | — | — | — |
–
GBP
|
— | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
2,000,000
GBP
|
2,000,000
GBP
|
–
GBP
|
— | — | — | — |
–
GBP
|
— |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | |||||||||||||||||||||||||||||||||
| Exchange differences on translation [abstract] | |||||||||||||||||||||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations |
46,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
46,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
46,000,000
GBP
|
–
GBP
|
–
GBP
|
352,000,000
GBP
|
352,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
352,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
232,000,000
GBP
|
232,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
232,000,000
GBP
|
| Cash flow hedges [abstract] | |||||||||||||||||||||||||||||||||
| Gains (losses) on cash flow hedges, before tax | — | — | — | — | — | — | — | — |
51,000,000
GBP
|
— | — |
28,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
137,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Reclassification adjustments on cash flow hedges, before tax | — | — | — | — | — | — | — | — |
78,000,000
GBP
|
— | — |
31,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
25,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Amounts removed from equity and included in carrying amount of non-financial asset (liability) whose acquisition or incurrence was hedged highly probable forecast transaction, before tax | — | — | — | — | — | — | — | — |
nil
GBP
|
— | — |
nil
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
118,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Other comprehensive income, before tax, cash flow hedges |
27,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
27,000,000
GBP
|
27,000,000
GBP
|
–
GBP
|
3,000,000
GBP
|
3,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
3,000,000
GBP
|
–
GBP
|
6,000,000
GBP
|
6,000,000
GBP
|
–
GBP
|
–
GBP
|
6,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Hedges of net investment in foreign operations [abstract] | |||||||||||||||||||||||||||||||||
| Other comprehensive income, before tax, hedges of net investments in foreign operations |
17,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
17,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
17,000,000
GBP
|
–
GBP
|
–
GBP
|
109,000,000
GBP
|
109,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
109,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
68,000,000
GBP
|
68,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
68,000,000
GBP
|
| Other comprehensive income | — | — | — | — | — | — | — | — |
45,000,000
GBP
|
— | — |
225,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
295,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
51,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
29,000,000
GBP
|
5,000,000
GBP
|
301,000,000
GBP
|
–
GBP
|
352,000,000
GBP
|
27,000,000
GBP
|
–
GBP
|
156,000,000
GBP
|
231,000,000
GBP
|
–
GBP
|
–
GBP
|
387,000,000
GBP
|
–
GBP
|
9,000,000
GBP
|
243,000,000
GBP
|
–
GBP
|
–
GBP
|
3,000,000
GBP
|
–
GBP
|
308,000,000
GBP
|
63,000,000
GBP
|
245,000,000
GBP
|
–
GBP
|
6,000,000
GBP
|
–
GBP
|
2,000,000
GBP
|
–
GBP
|
–
GBP
|
300,000,000
GBP
|
| Comprehensive income attributable to [abstract] | |||||||||||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — | — |
352,000,000
GBP
|
— | — |
156,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
63,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — | — |
–
GBP
|
— | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |