Disclosure Of Entity's Operating Segments [Text Block]
| Concept |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
2021-05-01 to 2022-04-30 |
As at 2022-04-30 |
2020-05-01 to 2021-04-30 |
As at 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
2020-05-01 to 2021-04-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of entity's operating segments [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of operating segments [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of operating segments [abstract] | ||||||||||||||||||||||||
| Disclosure of operating segments [line items] | ||||||||||||||||||||||||
| Revenue | — |
–
GBP
|
7,241,000,000
GBP
|
— | — | — | — | — | — | — |
7,241,000,000
GBP
|
— | — | — | — | — |
–
GBP
|
5,976,000,000
GBP
|
5,976,000,000
GBP
|
— | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — |
–
GBP
|
7,000,000
GBP
|
— | — | — | — | — | — | — |
7,000,000
GBP
|
— | — | — | — | — |
–
GBP
|
5,000,000
GBP
|
5,000,000
GBP
|
— | — | — | — | — |
| Tax expense (income) | — |
2,000,000
GBP
|
100,000,000
GBP
|
— | — | — | — | — | — | — |
98,000,000
GBP
|
— | — | — | — | — |
16,000,000
GBP
|
65,000,000
GBP
|
49,000,000
GBP
|
— | — | — | — | — |
| Profit (loss) before tax | — |
37,000,000
GBP
|
415,000,000
GBP
|
— | — | — | — | — | — | — |
3 78
GBP
|
— | — | — | — | — |
56,000,000
GBP
|
287,000,000
GBP
|
231,000,000
GBP
|
— | — | — | — | — |
| Profit (loss) from continuing operations | — |
3 5
GBP
|
315,000,000
GBP
|
— | — | — | — | — | — | — |
28 0
GBP
|
— | — | — | — | — |
4 0
GBP
|
222,000,000
GBP
|
182,000,000
GBP
|
— | — | — | — | — |
| Profit (loss) |
–
GBP
|
35,000,000
GBP
|
315,000,000
GBP
|
–
GBP
|
280,000,000
GBP
|
280,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
280,000,000
GBP
|
— |
–
GBP
|
— |
–
GBP
|
–
GBP
|
28,000,000
GBP
|
222,000,000
GBP
|
194,000,000
GBP
|
194,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
194,000,000
GBP
|
| Assets | — | — | — | — | — | — | — | — | — | — | — |
9,886,000,000
GBP
|
— |
8,700,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — | — | — | — | — | — | — | — |
17,000,000
GBP
|
— |
38,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — | — | — | — | — | — |
5,652,000,000
GBP
|
— |
5,165,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — | — | — | — | — | — | — |
921,000,000
GBP
|
— | — | — | — | — | — | — |
761,000,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — | — | — | — | — | — |
403,000,000
GBP
|
— | — | — | — | — | — | — |
391,000,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — | — | — | — | — | — |
483,000,000
GBP
|
— | — | — | — | — | — | — |
142,000,000
GBP
|
— | — | — | — | — |
| Disclosure of products and services [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of products and services [abstract] | ||||||||||||||||||||||||
| Disclosure of products and services [line items] | ||||||||||||||||||||||||
| Disclosure of geographical areas [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of geographical areas [abstract] | ||||||||||||||||||||||||
| Disclosure of geographical areas [line items] | ||||||||||||||||||||||||
| Disclosure of major customers [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of major customers [abstract] | ||||||||||||||||||||||||
| Disclosure of major customers [line items] |