Statement Of Cash Flows [Abstract]
| Concept |
2023-04-02 to 2024-03-30 |
As at 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2023-04-02 to 2024-03-30 |
2022-04-03 to 2023-04-01 |
2022-04-03 to 2023-04-01 |
2022-04-03 to 2023-04-01 |
2022-04-03 to 2023-04-01 |
2022-04-03 to 2023-04-01 |
As at 2023-04-01 |
2022-04-03 to 2023-04-01 |
2022-04-03 to 2023-04-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||||
| Profit (loss) |
2 70
GBP
|
— |
271,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,000,000
GBP
|
270,000,000
GBP
|
–
GBP
|
490,000,000
GBP
|
2,000,000
GBP
|
–
GBP
|
–
GBP
|
— |
492,000,000
GBP
|
490,000,000
GBP
|
| Adjustments to reconcile profit (loss) [abstract] | ||||||||||||||||
| Adjustments for decrease (increase) in inventories | — | — |
57,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
10,000,000
GBP
|
— |
| Adjustments for share-based payments | — | — |
16,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
19,000,000
GBP
|
— |
| Cash flows from (used in) operations | — | — |
665,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
912,000,000
GBP
|
— |
| Interest paid, classified as operating activities | — | — |
52,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
40,000,000
GBP
|
— |
| Interest received, classified as operating activities | — | — |
32,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
18,000,000
GBP
|
— |
| Income taxes paid (refund), classified as operating activities | — | — |
139,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
140,000,000
GBP
|
— |
| Cash flows from (used in) operating activities | — | — |
506,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
750,000,000
GBP
|
— |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — | — |
19,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
32,000,000
GBP
|
— |
| Purchase of property, plant and equipment, classified as investing activities | — | — |
158,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
136,000,000
GBP
|
— |
| Purchase of intangible assets, classified as investing activities | — | — |
50,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
43,000,000
GBP
|
— |
| Cash flows from (used in) investing activities | — | — |
231,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
147,000,000
GBP
|
— |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||||
| Proceeds from issuing shares | — | — |
1,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
3,000,000
GBP
|
— |
| Payments of lease liabilities, classified as financing activities | — | — |
231,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
210,000,000
GBP
|
— |
| Dividends paid, classified as financing activities | — | — |
233,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
203,000,000
GBP
|
— |
| Cash flows from (used in) financing activities | — | — |
865,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
821,000,000
GBP
|
— |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — |
590,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
218,000,000
GBP
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — |
9,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
2,000,000
GBP
|
— |
| Cash and cash equivalents | — |
441,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1 ,026
GBP
|
— | — |