Statement Of Changes In Equity [Abstract]
| Concept |
2021-10-03 to 2022-10-01 |
2021-10-03 to 2022-10-01 |
2021-10-03 to 2022-10-01 |
2021-10-03 to 2022-10-01 |
As at 2022-10-01 |
As at 2022-10-01 |
As at 2022-10-01 |
2021-10-03 to 2022-10-01 |
As at 2022-10-01 |
2021-10-03 to 2022-10-01 |
2021-10-03 to 2022-10-01 |
2021-10-03 to 2022-10-01 |
As at 2022-10-01 |
As at 2022-10-01 |
As at 2022-10-01 |
As at 2022-10-01 |
As at 2021-10-02 |
2020-10-04 to 2021-10-02 |
2020-10-04 to 2021-10-02 |
2020-10-04 to 2021-10-02 |
2020-10-04 to 2021-10-02 |
2020-10-04 to 2021-10-02 |
2020-10-04 to 2021-10-02 |
2020-10-04 to 2021-10-02 |
2020-10-04 to 2021-10-02 |
As at 2021-10-02 |
As at 2021-10-02 |
As at 2021-10-02 |
As at 2021-10-02 |
As at 2021-10-02 |
As at 2021-10-02 |
As at 2021-10-02 |
As at 2021-10-02 |
2020-10-04 to 2021-10-02 |
As at 2020-10-03 |
As at 2020-10-03 |
As at 2020-10-03 |
As at 2020-10-03 |
As at 2020-10-03 |
As at 2020-10-03 |
As at 2020-10-03 |
As at 2020-10-03 |
As at 2020-10-03 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||
| Equity | — | — | — | — |
417,100,000
GBP
|
50,700,000
GBP
|
6,800,000
GBP
|
— |
334,000,000
GBP
|
— | — | — |
48,700,000
GBP
|
110,900,000
GBP
|
3,100,000
GBP
|
648,100,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — |
48,700,000
GBP
|
406,400,000
GBP
|
111,100,000
GBP
|
81,400,000
GBP
|
151,100,000
GBP
|
334,000,000
GBP
|
6,800,000
GBP
|
360,500,000
GBP
|
— |
111,900,000
GBP
|
108,700,000
GBP
|
248,900,000
GBP
|
374,300,000
GBP
|
430,600,000
GBP
|
334,000,000
GBP
|
6,800,000
GBP
|
23,700,000
GBP
|
48,700,000
GBP
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
137,200,000
GBP
|
137,200,000
GBP
|
— | — | — |
–
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — |
162,800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
162,800,000
GBP
|
— | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — |
104,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
13,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
–
GBP
|
30,700,000
GBP
|
241,400,000
GBP
|
153,900,000
GBP
|
— | — | — |
–
GBP
|
— |
56,800,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — |
177,800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
27,300,000
GBP
|
55,700,000
GBP
|
–
GBP
|
149,400,000
GBP
|
— | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
–
GBP
|
–
GBP
|
500,000
GBP
|
500,000
GBP
|
— | — | — |
–
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — |
1,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,200,000
GBP
|
— | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — |