Statement Of Changes In Equity [Abstract]
| Concept |
2023-07-02 to 2024-06-29 |
2023-07-02 to 2024-06-29 |
2023-07-02 to 2024-06-29 |
2023-07-02 to 2024-06-29 |
2023-07-02 to 2024-06-29 |
2023-07-02 to 2024-06-29 |
2022-07-03 to 2023-07-01 |
2022-07-03 to 2023-07-01 |
2022-07-03 to 2023-07-01 |
2022-07-03 to 2023-07-01 |
2022-07-03 to 2023-07-01 |
2022-07-03 to 2023-07-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||
| Statement of changes in equity [line items] | ||||||||||||
| Increase (decrease) through transactions with owners, equity |
150,000,000
GBP
|
153,900,000
GBP
|
—
GBP
|
—
GBP
|
3,900,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
165,600,000
GBP
|
19,700,000
GBP
|
—
GBP
|
185,300,000
GBP
|
| Purchase of treasury shares |
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
7,000,000
GBP
|
—
GBP
|
—
GBP
|
7,000,000
GBP
|