Dividends - Schedule of dividends to shareholders (Details) - GBP (£) £ / shares in Units, £ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
Mar. 31, 2022 |
|
| Summary Of Dividends [Line Items] | |||
| Cash dividends paid (GBP per share) | £ 0.5700 | £ 0.5160 | £ 0.4937 |
| Cash dividend | £ 1,718 | £ 1,607 | £ 922 |
| Scrip dividend | £ 376 | £ 277 | £ 844 |
| Interim dividend in respect of the current year | |||
| Summary Of Dividends [Line Items] | |||
| Cash dividends paid (GBP per share) | £ 0.1940 | £ 0.1784 | £ 0.1721 |
| Cash dividend | £ 393 | £ 488 | £ 339 |
| Scrip dividend | £ 320 | £ 163 | £ 282 |
| Final dividend in respect of the prior year | |||
| Summary Of Dividends [Line Items] | |||
| Cash dividends paid (GBP per share) | £ 0.3760 | £ 0.3376 | £ 0.3216 |
| Cash dividend | £ 1,325 | £ 1,119 | £ 583 |
| Scrip dividend | £ 56 | £ 114 | £ 562 |