Profit Or Loss [Abstract]
| Concept |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
|---|---|---|---|---|---|---|
| Profit or loss [abstract] | ||||||
| Profit (loss) [abstract] | ||||||
| Revenue | — | — |
4,666,000,000
GBP
|
— | — |
4,079,000,000
GBP
|
| Other income (expense) from subsidiaries, jointly controlled entities and associates | — | — |
30,000,000
GBP
|
— | — |
32,000,000
GBP
|
| Profit (loss) before tax | — | — |
4,575,000,000
GBP
|
— | — |
4,018,000,000
GBP
|
| Tax expense (income) | — | — |
2,000,000
GBP
|
— | — |
5,000,000
GBP
|
| Profit (loss) |
4,064,000,000
GBP
|
509,000,000
GBP
|
4,573,000,000
GBP
|
3,547,000,000
GBP
|
466,000,000
GBP
|
4,013,000,000
GBP
|
| Earnings per share [text block] | — | — | — | — | — | — |
| Earnings per share [abstract] | ||||||
| Earnings per share [line items] | ||||||
| Basic earnings per share [abstract] | ||||||
| Basic earnings (loss) per share from continuing operations | — | — |
4.750
|
— | — |
4.154
|
| Diluted earnings per share [abstract] | ||||||
| Diluted earnings (loss) per share from continuing operations | — | — |
4.738
|
— | — |
4.143
|