Statement Of Financial Position [Abstract]
| Concept |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2024-04-04 |
As at 2024-04-04 |
As at 2024-04-04 |
As at 2024-04-04 |
As at 2024-04-04 |
As at 2024-04-04 |
As at 2024-04-04 |
As at 2024-04-04 |
As at 2024-04-04 |
As at 2024-04-04 |
As at 2023-04-04 |
As at 2023-04-04 |
As at 2023-04-04 |
As at 2023-04-04 |
As at 2023-04-04 |
As at 2023-04-04 |
As at 2023-04-04 |
As at 2023-04-04 |
As at 2023-04-04 |
As at 2023-04-04 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||||||||
| Current tax assets | — |
262,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
54,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — |
278,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
109,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — |
28,525,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
24,345,000,000
GBP
|
— | — | — | — | — | — | — |
26,096,000,000
GBP
|
— | — | — | — | — |
| Assets | — |
367,877,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
272,087,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||||||||
| Equity attributable to owners of parent | — |
19,723,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
17,686,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — |
759,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
-
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
1,485,000,000
GBP
|
20,482,000,000
GBP
|
759,000,000
GBP
|
19,723,000,000
GBP
|
132,000,000
GBP
|
17,086,000,000
GBP
|
35,000,000
GBP
|
1,157,000,000
GBP
|
53,000,000
GBP
|
119,000,000
GBP
|
15,119,000,000
GBP
|
36,000,000
GBP
|
1,336,000,000
GBP
|
51,000,000
GBP
|
38,000,000
GBP
|
127,000,000
GBP
|
17,686,000,000
GBP
|
1,157,000,000
GBP
|
17,686,000,000
GBP
|
-
GBP
|
38,000,000
GBP
|
176,000,000
GBP
|
16,906,000,000
GBP
|
-
GBP
|
16,906,000,000
GBP
|
1,233,000,000
GBP
|
1,336,000,000
GBP
|
47,000,000
GBP
|
14,000,000
GBP
|
14,184,000,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||||||||
| Provisions [abstract] | ||||||||||||||||||||||||||||||
| Provisions | — |
70,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
149,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities | — |
-
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
-
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — |
266,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
206,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — |
347,395,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
254,401,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — |
367,877,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
272,087,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |