Statement Of Comprehensive Income [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 |
2023-04-01 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | |||||||||||||||
| Profit (loss) |
75,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
75,000,000
GBP
|
75,000,000
GBP
|
–
GBP
|
270,000,000
GBP
|
271,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
270,000,000
GBP
|
271,000,000
GBP
|
1,000,000
GBP
|
| Other comprehensive income [abstract] | |||||||||||||||
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | |||||||||||||||
| Exchange differences on translation [abstract] | |||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations |
25,000,000
GBP
|
–
GBP
|
25,000,000
GBP
|
–
GBP
|
–
GBP
|
25,000,000
GBP
|
–
GBP
|
–
GBP
|
34,000,000
GBP
|
–
GBP
|
–
GBP
|
34,000,000
GBP
|
34,000,000
GBP
|
— |
–
GBP
|
| Cash flow hedges [abstract] | |||||||||||||||
| Other comprehensive income, before tax, cash flow hedges |
1,000,000
GBP
|
–
GBP
|
1,000,000
GBP
|
–
GBP
|
–
GBP
|
1,000,000
GBP
|
–
GBP
|
–
GBP
|
3,000,000
GBP
|
–
GBP
|
–
GBP
|
3,000,000
GBP
|
3,000,000
GBP
|
— |
–
GBP
|
| Other comprehensive income |
24,000,000
GBP
|
— | — | — | — | — | — | — |
36,000,000
GBP
|
— | — | — | — | — | — |
| Comprehensive income |
99,000,000
GBP
|
–
GBP
|
24,000,000
GBP
|
–
GBP
|
75,000,000
GBP
|
99,000,000
GBP
|
–
GBP
|
270,000,000
GBP
|
235,000,000
GBP
|
–
GBP
|
–
GBP
|
36,000,000
GBP
|
234,000,000
GBP
|
— |
1,000,000
GBP
|
| Comprehensive income attributable to [abstract] | |||||||||||||||
| Comprehensive income, attributable to owners of parent |
99,000,000
GBP
|
— | — | — | — | — | — | — |
234,000,000
GBP
|
— | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests |
–
GBP
|
— | — | — | — | — | — | — |
1,000,000
GBP
|
— | — | — | — | — | — |