Statement Of Financial Position [Abstract]
| Concept |
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 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||||||||
| Property, plant and equipment |
91,000,000
GBP
|
— | — | — | — | — | — | — | — |
112,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investment property |
10,000,000
GBP
|
— | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
50,329,000,000
GBP
|
— | — | — | — | — | — | — | — |
43,617,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
91,000,000
GBP
|
— | — | — | — | — | — | — | — |
94,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||||||||
| Cash and cash equivalents |
1,859,000,000
GBP
|
— | — | — | — | — | — | — | — |
1,782,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
2,064,000,000
GBP
|
— | — | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
–
GBP
|
— | — | — | — | — | — | — | — |
1,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
53,345,000,000
GBP
|
— | — | — | — | — | — | — | — |
46,417,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||
| Issued capital |
115,000,000
GBP
|
— | — | — | — | — | — | — | — |
115,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
958,000,000
GBP
|
— | — | — | — | — | — | — | — |
989,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium |
58,000,000
GBP
|
— | — | — | — | — | — | — | — |
58,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
–
GBP
|
— | — | — | — | — | — | — | — |
1,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
1,519,000,000
GBP
|
958,000,000
GBP
|
346,000,000
GBP
|
–
GBP
|
58,000,000
GBP
|
115,000,000
GBP
|
–
GBP
|
–
GBP
|
42,000,000
GBP
|
1,548,000,000
GBP
|
1,000,000
GBP
|
58,000,000
GBP
|
346,000,000
GBP
|
41,000,000
GBP
|
989,000,000
GBP
|
115,000,000
GBP
|
–
GBP
|
–
GBP
|
1,482,000,000
GBP
|
17,000,000
GBP
|
1,000,000
GBP
|
1,739,000,000
GBP
|
–
GBP
|
25,000,000
GBP
|
58,000,000
GBP
|
42,000,000
GBP
|
116,000,000
GBP
|
| Liabilities [abstract] | |||||||||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||||||||
| Deferred tax liabilities |
64,000,000
GBP
|
— | — | — | — | — | — | — | — |
24,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
51,826,000,000
GBP
|
— | — | — | — | — | — | — | — |
44,869,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
53,345,000,000
GBP
|
— | — | — | — | — | — | — | — |
46,417,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |