Statement Of Changes In Equity [Abstract]
| Concept |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
2022-07-01 to 2023-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2021-07-01 to 2022-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
2020-07-01 to 2021-06-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||
| Dividends recognised as distributions to non-controlling interests | — | — |
97,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
72,000,000
GBP
|
— |
72,000,000
GBP
|
— | — | — | — | — | — |
| Decrease (increase) through tax on share-based payment transactions, equity |
6,000,000
GBP
|
— | — |
6,000,000
GBP
|
— |
6,000,000
GBP
|
6,000,000
GBP
|
9,000,000
GBP
|
— |
9,000,000
GBP
|
9,000,000
GBP
|
— | — |
9,000,000
GBP
|
— | — |
9,000,000
GBP
|
9,000,000
GBP
|
9,000,000
GBP
|
— |
9,000,000
GBP
|
| Reduction of issued capital |
1,273,000,000
GBP
|
11,000,000
GBP
|
— |
1,273,000,000
GBP
|
11,000,000
GBP
|
1,273,000,000
GBP
|
1,273,000,000
GBP
|
2,310,000,000
GBP
|
18,000,000
GBP
|
2,310,000,000
GBP
|
2,310,000,000
GBP
|
18,000,000
GBP
|
— |
2,310,000,000
GBP
|
— |
1,000,000
GBP
|
200,000,000
GBP
|
200,000,000
GBP
|
200,000,000
GBP
|
1,000,000
GBP
|
200,000,000
GBP
|