Statement Of Financial Position [Abstract]
| Concept |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2024-01-27 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2023-01-28 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
As at 2022-01-29 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||||||||||||||
| Property, plant and equipment |
687,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
644,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
734,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
662,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
38,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
114,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
33,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
2,276,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,749,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||||||||||||||
| Current inventories |
769,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
662,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables |
1,452,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,425,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial assets |
6,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
9,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
124,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
199,900,000
GBP
|
— | — | — |
| Current assets |
2,447,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,234,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
4,724,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
3,983,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||||||||||||||
| Equity |
1,638,800,000
GBP
|
126,900,000
GBP
|
3,271,300,000
GBP
|
1,443,800,000
GBP
|
1,511,900,000
GBP
|
4,700,000
GBP
|
387,300,000
GBP
|
7,500,000
GBP
|
300,000
GBP
|
12,700,000
GBP
|
17,300,000
GBP
|
54,200,000
GBP
|
3,700,000
GBP
|
4,600,000
GBP
|
900,000
GBP
|
1,165,100,000
GBP
|
2,984,800,000
GBP
|
1,443,800,000
GBP
|
11,300,000
GBP
|
396,700,000
GBP
|
400,000
GBP
|
17,000,000
GBP
|
1,160,500,000
GBP
|
12,900,000
GBP
|
4,900,000
GBP
|
13,300,000
GBP
|
16,600,000
GBP
|
900,000
GBP
|
27,900,000
GBP
|
331,700,000
GBP
|
1,010,000,000
GBP
|
2,731,000,000
GBP
|
1,010,000,000
GBP
|
–
GBP
|
700,000
GBP
|
1,443,800,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||||||||||||||
| Non-current provisions |
52,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
33,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other non-current payables |
11,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
14,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other non-current financial liabilities |
37,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
9,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
1,839,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,725,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||||||||||||||
| Trade and other current payables |
991,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
791,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other current financial liabilities |
18,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
40,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
1,245,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,093,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
3,085,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,818,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |