Disclosure Of Entity's Operating Segments [Text Block]
| Concept |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — | — |
4,101,800,000
GBP
|
— | — | — | — | — | — | — |
3,971,600,000
GBP
|
— | — | — | — | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — | — | — | — |
20,100,000
GBP
|
— | — | — | — | — | — | — |
13,100,000
GBP
|
— | — | — | — | — | — | — | — |
| Tax expense (income) | — | — | — | — | — | — |
14,400,000
GBP
|
— | — | — | — | — | — | — |
8,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Profit (loss) before tax | — | — | — | — | — | — |
182,300,000
GBP
|
— | — | — | — | — | — | — |
1,811,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Profit (loss) |
164,200,000
GBP
|
–
GBP
|
3,700,000
GBP
|
–
GBP
|
164,200,000
GBP
|
–
GBP
|
167,900,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
–
GBP
|
1,803,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,803,000,000
GBP
|
–
GBP
|
1,803,000,000
GBP
|
— |
| Assets | — | — | — | — | — | — | — |
4,598,300,000
GBP
|
— | — | — |
4,610,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
7,851,100,000
GBP
|
| Investments accounted for using equity method | — | — | — | — | — | — | — |
54,300,000
GBP
|
— | — | — |
73,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
161,900,000
GBP
|
| Liabilities | — | — | — | — | — | — | — |
3,896,800,000
GBP
|
— | — | — |
4,381,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
5,499,300,000
GBP
|
| Cash flows from (used in) operating activities | — | — | — | — | — | — |
6,800,000
GBP
|
— | — | — | — | — | — | — |
427,400,000
GBP
|
— | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — | — |
338,600,000
GBP
|
— | — | — | — | — | — | — |
2 4.4
GBP
|
— | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — | — |
122,700,000
GBP
|
— | — | — | — | — | — | — |
1,223 .9
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] |