Statement Of Changes In Equity [Abstract]
| Concept |
2024-03-31 to 2025-03-29 |
2024-03-31 to 2025-03-29 |
2024-03-31 to 2025-03-29 |
2024-03-31 to 2025-03-29 |
2024-03-31 to 2025-03-29 |
2024-03-31 to 2025-03-29 |
2024-03-31 to 2025-03-29 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||
| Dividends recognised as distributions to owners of parent |
152,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
152,000,000
GBP
|
152,000,000
GBP
|
–
GBP
|
233,000,000
GBP
|
233,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
233,000,000
GBP
|
–
GBP
|
| Increase (decrease) through exercise of options, equity | — | — | — | — | — | — | — |
–
GBP
|
1,000,000
GBP
|
–
GBP
|
1,000,000
GBP
|
–
GBP
|
1,000,000
GBP
|
–
GBP
|
| Decrease (increase) through tax on share-based payment transactions, equity | — | — | — | — | — | — | — |
2,000,000
GBP
|
2,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
2,000,000
GBP
|
–
GBP
|
| Purchase of treasury shares | — | — | — | — | — | — | — |
402,000,000
GBP
|
402,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
402,000,000
GBP
|
–
GBP
|