Analysis Of Income And Expense [Abstract]
| Concept |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||||||
| Revenue | — | — |
–
GBP
|
454,000,000
GBP
|
454,000,000
GBP
|
— | — | — | — | — | — | — |
174,000,000
GBP
|
401,000,000
GBP
|
— | — |
57 5
GBP
|
— | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||||||||||
| Finance income (cost) | — | — |
43,000,000
GBP
|
60,000,000
GBP
|
103,000,000
GBP
|
— | — | — | — | — | — | — |
41,000,000
GBP
|
55,000,000
GBP
|
— | — |
96,000,000
GBP
|
— | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||||||||
| Share of profit (loss) of joint ventures accounted for using equity method | — | — |
–
GBP
|
90,000,000
GBP
|
90,000,000
GBP
|
— | — | — | — | — | — | — |
179,000,000
GBP
|
100,000,000
GBP
|
— | — |
79,000,000
GBP
|
— | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — |
–
GBP
|
90,000,000
GBP
|
90,000,000
GBP
|
— | — | — | — | — | — | — |
179,000,000
GBP
|
100,000,000
GBP
|
— | — |
79,000,000
GBP
|
— | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||||
| Comprehensive income |
–
GBP
|
338,000,000
GBP
|
— | — |
338,000,000
GBP
|
338,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — |
3,000,000
GBP
|
2,000,000
GBP
|
1,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,000,000
GBP
|
2,000,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — |
338,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
3,000,000
GBP
|
— | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
2,000,000
GBP
|
— | — | — | — | — |