Statement Of Cash Flows [Abstract]
| 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 |
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 |
2020-04-01 to 2021-03-31 |
As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||||||||||||||
| Profit (loss) |
958,000,000
GBP
|
–
GBP
|
2,000,000
GBP
|
958,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
960,000,000
GBP
|
— |
257,000,000
GBP
|
703,000,000
GBP
|
–
GBP
|
— |
–
GBP
|
–
GBP
|
178,000,000
GBP
|
1,261,000,000
GBP
|
1,083,000,000
GBP
|
–
GBP
|
–
GBP
|
1,031,000,000
GBP
|
–
GBP
|
52,000,000
GBP
|
1,031,000,000
GBP
|
— |
| Cash flows from (used in) operations | — | — | — | — | — | — | — |
256,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
2 18
GBP
|
— | — | — | — | — | — | — |
| Interest paid, classified as operating activities | — | — | — | — | — | — | — |
62,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
70,000,000
GBP
|
— | — | — | — | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — | — | — | — | — |
6,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
33,000,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — | — | — | — |
245,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
149,000,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||||||||||||||||
| Cash advances and loans made to other parties, classified as investing activities | — | — | — | — | — | — | — |
121,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
84,000,000
GBP
|
— | — | — | — | — | — | — |
| Income taxes paid (refund), classified as investing activities | — | — | — | — | — | — | — |
5,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
2,000,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — | — | — |
385,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
910,000,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||||||||||||||||
| Proceeds from borrowings, classified as financing activities | — | — | — | — | — | — | — |
483,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
214,000,000
GBP
|
— | — | — | — | — | — | — |
| Repayments of borrowings, classified as financing activities | — | — | — | — | — | — | — |
213,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
1,218,000,000
GBP
|
— | — | — | — | — | — | — |
| Payments of lease liabilities, classified as financing activities | — | — | — | — | — | — | — |
4,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
7,000,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — | — | — |
60,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
1,098,000,000
GBP
|
— | — | — | — | — | — | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — | — | — | — | — | — | — |
80,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
39,000,000
GBP
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — | — | — |
74,000,000
GBP
|
— | — | — |
154,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
193,000,000
GBP
|