Statement Of Changes In Equity [Abstract]
| Concept |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 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 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||
| Equity |
30,000,000
GBP
|
— |
6,5 32
GBP
|
— |
18,000,000
GBP
|
3 19
GBP
|
— |
80,000,000
GBP
|
— |
6 ,0 8 5
GBP
|
— |
6 ,51 4
GBP
|
— | — | — |
23,000,000
GBP
|
6,4 02
GBP
|
5 ,9 8 0
GBP
|
— |
3 19
GBP
|
80,000,000
GBP
|
45,000,000
GBP
|
— |
6, 4 47
GBP
|
— | — | — | — |
7, 0 0 5
GBP
|
7,072,000,000
GBP
|
318,000,000
GBP
|
80,000,000
GBP
|
67,000,000
GBP
|
6,594,000,000
GBP
|
13,000,000
GBP
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — |
396,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
3 4 1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — |
9,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
405,000,000
GBP
|
— |
40 5
GBP
|
— | — |
4 05
GBP
|
— |
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — |
3 2 1
GBP
|
— | — | — |
343,000,000
GBP
|
— |
–
GBP
|
–
GBP
|
3 21
GBP
|
22,000,000
GBP
|
— | — | — | — | — | — | — |
| Issue of equity | — |
–
GBP
|
— |
12,000,000
GBP
|
— | — |
–
GBP
|
— |
12,000,000
GBP
|
— |
–
GBP
|
— |
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
297,000,000
GBP
|
— |
297,000,000
GBP
|
— | — |
297,000,000
GBP
|
— |
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — |
291,000,000
GBP
|
— | — | — |
291,000,000
GBP
|
— |
–
GBP
|
–
GBP
|
291,000,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
4,000,000
GBP
|
— |
4,000,000
GBP
|
— | — |
3,000,000
GBP
|
— |
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
7,000,000
GBP
|
10,000,000
GBP
|
— | — | — |
9,000,000
GBP
|
— | — | — |
9,000,000
GBP
|
— |
1,000,000
GBP
|
–
GBP
|
2,000,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — |