Statement Of Changes In Equity [Abstract]
| Concept |
2021-01-31 to 2022-01-29 |
2021-01-31 to 2022-01-29 |
2021-01-31 to 2022-01-29 |
2021-01-31 to 2022-01-29 |
2021-01-31 to 2022-01-29 |
2021-01-31 to 2022-01-29 |
2021-01-31 to 2022-01-29 |
2021-01-31 to 2022-01-29 |
2021-01-31 to 2022-01-29 |
2021-01-31 to 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 2021-01-30 |
As at 2021-01-30 |
As at 2021-01-30 |
As at 2021-01-30 |
As at 2021-01-30 |
As at 2021-01-30 |
As at 2021-01-30 |
As at 2021-01-30 |
As at 2021-01-30 |
As at 2021-01-30 |
2020-01-26 to 2021-01-30 |
2020-01-26 to 2021-01-30 |
2020-01-26 to 2021-01-30 |
2020-01-26 to 2021-01-30 |
2020-01-26 to 2021-01-30 |
2020-01-26 to 2021-01-30 |
2020-01-26 to 2021-01-30 |
2020-01-26 to 2021-01-30 |
2020-01-26 to 2021-01-30 |
2020-01-26 to 2021-01-30 |
As at 2020-01-25 |
As at 2020-01-25 |
As at 2020-01-25 |
As at 2020-01-25 |
As at 2020-01-25 |
As at 2020-01-25 |
As at 2020-01-25 |
As at 2020-01-25 |
As at 2020-01-25 |
As at 2020-01-25 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — | — | — | — | — | — | — | — | — | — |
13,300,000
GBP
|
16,600,000
GBP
|
900,000
GBP
|
27,900,000
GBP
|
331,700,000
GBP
|
2,731,000,000
GBP
|
1,010,000,000
GBP
|
700,000
GBP
|
1,443,800,000
GBP
|
4,900,000
GBP
|
16,600,000
GBP
|
19,700,000
GBP
|
271,200,000
GBP
|
100,000
GBP
|
900,000
GBP
|
1,443,800,000
GBP
|
2,367,200,000
GBP
|
660,900,000
GBP
|
13,300,000
GBP
|
2,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
24,700,000
GBP
|
284,900,000
GBP
|
500,000
GBP
|
–
GBP
|
441,500,000
GBP
|
900,000
GBP
|
2,163,600,000
GBP
|
1,443,800,000
GBP
|
13,300,000
GBP
|
16,600,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
677,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
677,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
286,700,000
GBP
|
286,700,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
41,300,000
GBP
|
–
GBP
|
29,900,000
GBP
|
–
GBP
|
2,400,000
GBP
|
600,000
GBP
|
69,400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,500,000
GBP
|
400,000
GBP
|
46,300,000
GBP
|
60,700,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
11,500,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
718,800,000
GBP
|
–
GBP
|
29,900,000
GBP
|
–
GBP
|
2,400,000
GBP
|
600,000
GBP
|
746,900,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,500,000
GBP
|
400,000
GBP
|
240,400,000
GBP
|
226,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
11,500,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
344,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
344,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — |