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 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 |
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 |
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 |
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 |
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 |
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 |
424,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
350,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
428,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investment property |
6,232,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
5,899,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
7,003,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Goodwill |
2,100,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
2,102,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,741,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill |
968,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
940,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
994,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
958,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,382,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
525,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash and cash equivalents |
17,273,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
22,505,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
12,485,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
748,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
—
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
—
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
328,843,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
309,583,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
351,924,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Issued capital |
1,101,000,000
GBP
|
— | — | — | — | — |
200,000,000
GBP
|
— | — | — | — |
901,000,000
GBP
|
1,124,000,000
GBP
|
— | — | — | — | — | — |
924,000,000
GBP
|
— | — | — |
200,000,000
GBP
|
— | — | — | — | — | — | — | — |
1,141,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
941,000,000
GBP
|
— | — | — | — | — | — |
200,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Retained earnings |
2,228,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
2,328,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
4,792,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium |
17,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,263,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,248,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Treasury shares |
87,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
85,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
51,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
279,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
355,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
248,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
9,282,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
9,904,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
16,438,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
318,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
310,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
252,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
9,600,000,000
GBP
|
2,228,000,000
GBP
|
279,000,000
GBP
|
200,000,000
GBP
|
901,000,000
GBP
|
318,000,000
GBP
|
— |
87,000,000
GBP
|
496,000,000
GBP
|
9,282,000,000
GBP
|
5,265,000,000
GBP
|
— |
10,214,000,000
GBP
|
355,000,000
GBP
|
200,000,000
GBP
|
924,000,000
GBP
|
496,000,000
GBP
|
10,342,000,000
GBP
|
310,000,000
GBP
|
— |
2,328,000,000
GBP
|
85,000,000
GBP
|
9,904,000,000
GBP
|
— |
51,000,000
GBP
|
4,792,000,000
GBP
|
248,000,000
GBP
|
51,000,000
GBP
|
19,454,000,000
GBP
|
—
GBP
|
2,523,000,000
GBP
|
—
GBP
|
16,690,000,000
GBP
|
2,523,000,000
GBP
|
—
GBP
|
2,523,000,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
241,000,000
GBP
|
—
GBP
|
—
GBP
|
241,000,000
GBP
|
941,000,000
GBP
|
248,000,000
GBP
|
200,000,000
GBP
|
10,308,000,000
GBP
|
—
GBP
|
7,556,000,000
GBP
|
— |
941,000,000
GBP
|
200,000,000
GBP
|
10,308,000,000
GBP
|
19,202,000,000
GBP
|
252,000,000
GBP
|
—
GBP
|
— |
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
16,438,000,000
GBP
|
—
GBP
|
252,000,000
GBP
|
241,000,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deferred tax liabilities |
453,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
703,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,466,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
319,243,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
299,369,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
335,234,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities |
328,843,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
309,583,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
351,924,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |