Statement Of Cash Flows [Abstract]
| Concept |
As at 2022-04-30 |
2021-05-01 to 2022-04-30 |
As at 2021-04-30 |
2020-05-01 to 2021-04-30 |
|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||
| Cash flows from (used in) operating activities [abstract] | ||||
| Cash flows from (used in) operations | — |
1,07 9
GBP
|
— |
895,000,000
GBP
|
| Interest paid, classified as operating activities | — |
63,000,000
GBP
|
— |
69,000,000
GBP
|
| Interest received, classified as operating activities | — |
1,000,000
GBP
|
— |
1,000,000
GBP
|
| Income taxes paid (refund), classified as operating activities | — |
96,000,000
GBP
|
— |
66,000,000
GBP
|
| Cash flows from (used in) operating activities | — |
921,000,000
GBP
|
— |
761,000,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — |
35,000,000
GBP
|
— |
16,000,000
GBP
|
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
23,000,000
GBP
|
— |
90,000,000
GBP
|
| Other inflows (outflows) of cash, classified as investing activities | — |
2,000,000
GBP
|
— |
2,000,000
GBP
|
| Cash flows from (used in) investing activities | — |
403,000,000
GBP
|
— |
391,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||||
| Proceeds from issuing shares | — |
7,000,000
GBP
|
— |
3,000,000
GBP
|
| Proceeds from borrowings, classified as financing activities | — |
334,000,000
GBP
|
— |
1, 157
GBP
|
| Repayments of borrowings, classified as financing activities | — |
529,000,000
GBP
|
— |
1,213,000,000
GBP
|
| Payments of lease liabilities, classified as financing activities | — |
73,000,000
GBP
|
— |
73,000,000
GBP
|
| Dividends paid, classified as financing activities | — |
166,000,000
GBP
|
— |
–
GBP
|
| Other inflows (outflows) of cash, classified as financing activities | — |
21,000,000
GBP
|
— |
–
GBP
|
| Cash flows from (used in) financing activities | — |
483,000,000
GBP
|
— |
142,000,000
GBP
|
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||
| Effect of exchange rate changes on cash and cash equivalents | — |
8,000,000
GBP
|
— |
4,000,000
GBP
|
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
35,000,000
GBP
|
— |
228,000,000
GBP
|
| Cash and cash equivalents |
819,000,000
GBP
|
— |
813,000,000
GBP
|
— |