Statement Of Cash Flows [Abstract]
| Concept |
2023-09-17 to 2024-09-14 |
As at 2024-09-14 |
As at 2023-09-16 |
2022-09-18 to 2023-09-16 |
|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||
| Cash flows from (used in) operating activities [abstract] | ||||
| Cash flows from (used in) operations |
3,214,000,000
GBP
|
— | — |
1,995,000,000
GBP
|
| Income taxes paid (refund), classified as operating activities |
340,000,000
GBP
|
— | — |
341,000,000
GBP
|
| Cash flows from (used in) operating activities |
2,874,000,000
GBP
|
— | — |
1,654,000,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||||
| Proceeds from sales of property, plant and equipment, classified as investing activities |
43,000,000
GBP
|
— | — |
48,000,000
GBP
|
| Purchase of property, plant and equipment, classified as investing activities |
1,124,000,000
GBP
|
— | — |
997,000,000
GBP
|
| Purchase of intangible assets, classified as investing activities |
60,000,000
GBP
|
— | — |
76,000,000
GBP
|
| Interest received, classified as investing activities |
71,000,000
GBP
|
— | — |
44,000,000
GBP
|
| Cash flows from (used in) investing activities |
1,332,000,000
GBP
|
— | — |
903,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||||
| Payments to acquire or redeem entity's shares |
562,000,000
GBP
|
— | — |
448,000,000
GBP
|
| Payments of lease liabilities, classified as financing activities |
348,000,000
GBP
|
— | — |
308,000,000
GBP
|
| Interest paid, classified as financing activities |
140,000,000
GBP
|
— | — |
118,000,000
GBP
|
| Cash flows from (used in) financing activities |
1, 569
GBP
|
— | — |
1,285,000,000
GBP
|
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes |
27,000,000
GBP
|
— | — |
534,000,000
GBP
|
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||
| Effect of exchange rate changes on cash and cash equivalents |
126,000,000
GBP
|
— | — |
73,000,000
GBP
|
| Cash and cash equivalents | — |
1,323,000,000
GBP
|
1,457,000,000
GBP
|
— |