Statement Of Changes In Equity [Abstract]
| Concept |
2023-10-01 to 2024-09-30 |
2023-10-01 to 2024-09-30 |
2023-10-01 to 2024-09-30 |
2023-10-01 to 2024-09-30 |
2023-10-01 to 2024-09-30 |
2023-10-01 to 2024-09-30 |
2023-10-01 to 2024-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
2022-10-01 to 2023-09-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||
| Decrease (increase) through tax on share-based payment transactions, equity | — | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
–
GBP
|
1,000,000
GBP
|
1,000,000
GBP
|
–
GBP
|
1,000,000
GBP
|
| Purchase of treasury shares |
1,115,000,000
GBP
|
1,115,000,000
GBP
|
6,000,000
GBP
|
–
GBP
|
–
GBP
|
6,000,000
GBP
|
1,115,000,000
GBP
|
6,000,000
GBP
|
–
GBP
|
–
GBP
|
1,006,000,000
GBP
|
1,006,000,000
GBP
|
6,000,000
GBP
|
1,006,000,000
GBP
|