Statement Of Financial Position [Abstract]
| Concept |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — | — | — | — |
821,000,000
GBP
|
777,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
2,599,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Investment property | — | — | — | — | — | — | — | — | — |
69,000,000
GBP
|
114,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
62,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners | — | — | — | — | — | — | — | — | — |
–
GBP
|
18,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — | — | — | — |
651,000,000
GBP
|
527,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
373,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — | — | — |
88,000,000
GBP
|
58,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
355,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — | — | — | — |
7,436,000,000
GBP
|
7,104,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
14,179,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — | — | — | — |
1,000,000
GBP
|
309,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
309,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — | — | — | — |
3,778,000,000
GBP
|
1,182,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
4,379,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Share premium | — | — | — | — | — | — | — | — | — |
1,000,000,000
GBP
|
3,271,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
3,271,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — | — | — | — | — |
2,330,000,000
GBP
|
2,330,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
2,330,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — | — | — | — |
2,844,000,000
GBP
|
3,567,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
7,129,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — |
39,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Equity |
–
GBP
|
3,778,000,000
GBP
|
1,000,000,000
GBP
|
1,000,000
GBP
|
–
GBP
|
286,000,000
GBP
|
2,844,000,000
GBP
|
2,330,000,000
GBP
|
109,000,000
GBP
|
2,844,000,000
GBP
|
3,567,000,000
GBP
|
1,182,000,000
GBP
|
753,000,000
GBP
|
2,330,000,000
GBP
|
–
GBP
|
3,271,000,000
GBP
|
309,000,000
GBP
|
273,000,000
GBP
|
109,000,000
GBP
|
3,567,000,000
GBP
|
7,168,000,000
GBP
|
2,330,000,000
GBP
|
39,000,000
GBP
|
3,271,000,000
GBP
|
753,000,000
GBP
|
4,379,000,000
GBP
|
309,000,000
GBP
|
638,000,000
GBP
|
7,129,000,000
GBP
|
109,000,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||||||||
| Deferred tax liabilities | — | — | — | — | — | — | — | — | — |
517,000,000
GBP
|
482,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
619,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Liabilities included in disposal groups classified as held for sale | — | — | — | — | — | — | — | — | — |
–
GBP
|
10,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — | — | — | — |
4,592,000,000
GBP
|
3,537,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
7,011,000,000
GBP
|
— | — | — | — | — | — | — | — | — |