Statement Of Comprehensive Income [Abstract]
| Concept |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||
| Profit (loss) |
—
GBP
|
462,900,000
GBP
|
—
GBP
|
462,900,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
382,000,000
GBP
|
382,000,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||
| Other comprehensive income |
—
GBP
|
3,400,000
GBP
|
—
GBP
|
—
GBP
|
3,400,000
GBP
|
—
GBP
|
—
GBP
|
9,400,000
GBP
|
9,400,000
GBP
|
—
GBP
|
| Comprehensive income |
—
GBP
|
466,300,000
GBP
|
—
GBP
|
462,900,000
GBP
|
3,400,000
GBP
|
—
GBP
|
—
GBP
|
9,400,000
GBP
|
372,600,000
GBP
|
382,000,000
GBP
|