Statement Of Changes In Equity [Abstract]
| Concept |
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 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
2019-07-01 to 2020-06-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||
| Decrease (increase) through tax on share-based payment transactions, equity |
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
|
— |
1,000,000
GBP
|
— |
1,000,000
GBP
|
1,000,000
GBP
|
1,000,000
GBP
|
| Reduction of issued capital |
2,310,000,000
GBP
|
2,310,000,000
GBP
|
2,310,000,000
GBP
|
18,000,000
GBP
|
18,000,000
GBP
|
2,310,000,000
GBP
|
200,000,000
GBP
|
1,000,000
GBP
|
200,000,000
GBP
|
1,000,000
GBP
|
200,000,000
GBP
|
200,000,000
GBP
|
11,000,000
GBP
|
1,256,000,000
GBP
|
11,000,000
GBP
|
1,256,000,000
GBP
|
1,256,000,000
GBP
|
1,256,000,000
GBP
|