Statement Of Changes In Equity [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 |
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 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — | — | — | — | — |
2, 827
GBP
|
579,000,000
GBP
|
109,000,000
GBP
|
259,000,000
GBP
|
1 91
GBP
|
— |
3, 475
GBP
|
— | — |
151,000,000
GBP
|
3,73 4
GBP
|
— | — |
3,833,000,000
GBP
|
— | — |
3, 488
GBP
|
— |
1 87
GBP
|
— | — |
4 57
GBP
|
577,000,000
GBP
|
— |
11 4
GBP
|
99 0
GBP
|
3 , 3 76
GBP
|
4 ,1 60
GBP
|
— | — | — | — | — | — |
285,000,000
GBP
|
479,000,000
GBP
|
5 76
GBP
|
3 , 76 0
GBP
|
1 ,0 54
GBP
|
114,000,000
GBP
|
3,681,000,000
GBP
|
— | — |
1 ,11 2
GBP
|
4 ,366
GBP
|
3 3 6
GBP
|
4 ,06 8
GBP
|
3,615,000,000
GBP
|
4 53
GBP
|
575,000,000
GBP
|
122,000,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
5 42
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — |
542,000,000
GBP
|
— |
87,000,000
GBP
|
629,000,000
GBP
|
— | — |
197,000,000
GBP
|
–
GBP
|
— |
11 0
GBP
|
–
GBP
|
— |
87,000,000
GBP
|
— |
11 0
GBP
|
–
GBP
|
— | — |
–
GBP
|
— | — | — | — |
–
GBP
|
–
GBP
|
7 75
GBP
|
–
GBP
|
68 3
GBP
|
92,000,000
GBP
|
— | — | — | — | — | — | — |
683,000,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
–
GBP
|
58,000,000
GBP
|
6 0
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — |
2,000,000
GBP
|
— |
2,000,000
GBP
|
62,000,000
GBP
|
— | — |
3 29
GBP
|
–
GBP
|
— |
306,000,000
GBP
|
29 6
GBP
|
— |
23,000,000
GBP
|
— |
1 0
GBP
|
–
GBP
|
— | — |
–
GBP
|
— | — | — | — |
–
GBP
|
299,000,000
GBP
|
321,000,000
GBP
|
–
GBP
|
6,000,000
GBP
|
16,000,000
GBP
|
— | — | — | — | — | — | — |
305,000,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
–
GBP
|
58,000,000
GBP
|
482,000,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — |
5 40
GBP
|
— |
85,000,000
GBP
|
567,000,000
GBP
|
— | — |
13 2
GBP
|
–
GBP
|
— |
196,000,000
GBP
|
296,000,000
GBP
|
— |
64,000,000
GBP
|
— |
100,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
— | — | — | — |
–
GBP
|
299,000,000
GBP
|
1,096,000,000
GBP
|
–
GBP
|
689,000,000
GBP
|
108,000,000
GBP
|
— | — | — | — | — | — | — |
98 8
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |
| Issue of equity |
–
GBP
|
–
GBP
|
2,000,000
GBP
|
–
GBP
|
2,000,000
GBP
|
— | — | — | — | — |
–
GBP
|
— |
–
GBP
|
2,000,000
GBP
|
— | — |
1,000,000
GBP
|
–
GBP
|
— |
1,000,000
GBP
|
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
1,000,000
GBP
|
— | — |
–
GBP
|
— | — | — | — |
–
GBP
|
–
GBP
|
1,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — |
1,000,000
GBP
|
1,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
–
GBP
|
–
GBP
|
42 5
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — |
42 5
GBP
|
— |
67,000,000
GBP
|
49 2
GBP
|
— | — |
524,000,000
GBP
|
–
GBP
|
— |
4 23
GBP
|
–
GBP
|
— |
101,000,000
GBP
|
— |
42 3
GBP
|
–
GBP
|
— | — |
–
GBP
|
— | — | — | — |
–
GBP
|
–
GBP
|
4 3 5
GBP
|
–
GBP
|
3 65
GBP
|
70,000,000
GBP
|
— | — | — | — | — | — | — |
3 65
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity |
57,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — |
57,000,000
GBP
|
— |
–
GBP
|
–
GBP
|
— | — |
–
GBP
|
55,000,000
GBP
|
— |
–
GBP
|
–
GBP
|
— |
–
GBP
|
— |
5 5
GBP
|
–
GBP
|
— | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
–
GBP
|
–
GBP
|
81,000,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — |
81,000,000
GBP
|
— |
–
GBP
|
81,000,000
GBP
|
— | — |
140,000,000
GBP
|
–
GBP
|
— |
14 0
GBP
|
–
GBP
|
— |
–
GBP
|
— |
140,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
— | — | — | — |
–
GBP
|
–
GBP
|
12 2
GBP
|
–
GBP
|
122,000,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — |
12 2
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |
| Increase (decrease) in equity |
799,000,000
GBP
|
22,000,000
GBP
|
383,000,000
GBP
|
5,000,000
GBP
|
2,000,000
GBP
|
— | — | — | — | — |
1 ,201
GBP
|
— |
28 3
GBP
|
666,000,000
GBP
|
— | — |
195,000,000
GBP
|
64,000,000
GBP
|
— |
1 09
GBP
|
1 98
GBP
|
— |
8 6
GBP
|
— |
3 72
GBP
|
1,000,000
GBP
|
— | — |
–
GBP
|
— | — | — | — |
8,000,000
GBP
|
322,000,000
GBP
|
1, 00 4
GBP
|
58,000,000
GBP
|
1, 295
GBP
|
82,000,000
GBP
|
— | — | — | — | — | — | — |
9 22
GBP
|
1,000,000
GBP
|
— | — | — | — | — | — | — | — |