Statement Of Changes In Equity [Abstract]
| Concept |
As at 2024-07-31 |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
As at 2024-07-31 |
As at 2024-07-31 |
As at 2024-07-31 |
As at 2024-07-31 |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
2023-08-01 to 2024-07-31 |
As at 2024-07-31 |
As at 2024-07-31 |
2023-08-01 to 2024-07-31 |
As at 2024-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
2022-08-01 to 2023-07-31 |
As at 2023-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
As at 2022-07-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||
| Equity |
184,000,000
GBP
|
— | — | — | — | — |
495,000,000
GBP
|
1,306,000,000
GBP
|
2,230,000,000
GBP
|
353,000,000
GBP
|
— | — | — | — |
2,252,000,000
GBP
|
22,000,000
GBP
|
— |
260,000,000
GBP
|
— |
188,000,000
GBP
|
— |
496,000,000
GBP
|
— |
1,431,000,000
GBP
|
— | — |
386,000,000
GBP
|
— |
2,384,000,000
GBP
|
— |
22,000,000
GBP
|
— | — |
2,406,000,000
GBP
|
— |
259,000,000
GBP
|
501,000,000
GBP
|
202,000,000
GBP
|
1,659,000,000
GBP
|
2,721,000,000
GBP
|
487,000,000
GBP
|
2,699,000,000
GBP
|
22,000,000
GBP
|
254,000,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
250,000,000
GBP
|
–
GBP
|
115,000,000
GBP
|
–
GBP
|
366,000,000
GBP
|
— | — | — | — |
251,000,000
GBP
|
–
GBP
|
250,000,000
GBP
|
1,000,000
GBP
|
— | — |
–
GBP
|
— |
–
GBP
|
— |
113,000,000
GBP
|
— |
–
GBP
|
— |
231,000,000
GBP
|
345,000,000
GBP
|
— |
231,000,000
GBP
|
— |
232,000,000
GBP
|
— |
–
GBP
|
1,000,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — | — |
183,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
187,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
97,000,000
GBP
|
4,000,000
GBP
|
— |
–
GBP
|
— | — | — | — | — |
68,000,000
GBP
|
33,000,000
GBP
|
68,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
— |
14,000,000
GBP
|
— | — | — |
–
GBP
|
— |
133,000,000
GBP
|
— | — |
46,000,000
GBP
|
— |
45,000,000
GBP
|
— |
101,000,000
GBP
|
1,000,000
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — |
70,000,000
GBP
|
–
GBP
|
— |
1,000,000
GBP
|
— | — | — | — | — |
70,000,000
GBP
|
–
GBP
|
70,000,000
GBP
|
–
GBP
|
— | — |
1,000,000
GBP
|
— |
–
GBP
|
— | — | — |
5,000,000
GBP
|
— |
207,000,000
GBP
|
— | — |
207,000,000
GBP
|
— |
207,000,000
GBP
|
— |
–
GBP
|
–
GBP
|
— |
5,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
11,000,000
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — | — |
11,000,000
GBP
|
–
GBP
|
11,000,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
— |
13,000,000
GBP
|
— | — |
13,000,000
GBP
|
— |
13,000,000
GBP
|
— |
–
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — | — | — |