Statement Of Cash Flows [Abstract]
| Concept |
As at 2023-04-30 |
2022-04-25 to 2023-04-30 |
2021-04-26 to 2022-04-24 |
As at 2022-04-24 |
As at 2021-04-25 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Cash flows from (used in) operations | — |
634,900,000
GBP
|
741,800,000
GBP
|
— | — |
| Income taxes paid (refund), classified as operating activities | — |
93,200,000
GBP
|
121,000,000
GBP
|
— | — |
| Cash flows from (used in) operating activities | — |
541,700,000
GBP
|
620,800,000
GBP
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — |
46,500,000
GBP
|
1,000,000
GBP
|
— | — |
| Cash flows from (used in) investing activities | — |
178,300,000
GBP
|
229,100,000
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||
| Payments to acquire or redeem entity's shares | — |
155,300,000
GBP
|
193,200,000
GBP
|
— | — |
| Proceeds from borrowings, classified as financing activities | — |
616,800,000
GBP
|
1,374,400,000
GBP
|
— | — |
| Repayments of borrowings, classified as financing activities | — |
695,000,000
GBP
|
1,484,400,000
GBP
|
— | — |
| Payments of lease liabilities, classified as financing activities | — |
140,700,000
GBP
|
176,200,000
GBP
|
— | — |
| Dividends paid, classified as financing activities | — |
700,000
GBP
|
1,300,000
GBP
|
— | — |
| Cash flows from (used in) financing activities | — |
370,900,000
GBP
|
512,000,000
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
7,500,000
GBP
|
120,300,000
GBP
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents | — |
3,600,000
GBP
|
100,000
GBP
|
— | — |
| Cash and cash equivalents |
332,900,000
GBP
|
— | — |
336,800,000
GBP
|
457,000,000
GBP
|