Analysis Of Income And Expense [Abstract]
| Concept |
2023-02-01 to 2024-01-31 |
2023-02-01 to 2024-01-31 |
2023-02-01 to 2024-01-31 |
2023-02-01 to 2024-01-31 |
2023-02-01 to 2024-01-31 |
2023-02-01 to 2024-01-31 |
2023-02-01 to 2024-01-31 |
2023-02-01 to 2024-01-31 |
2022-02-01 to 2023-01-31 |
2022-02-01 to 2023-01-31 |
2022-02-01 to 2023-01-31 |
2022-02-01 to 2023-01-31 |
2022-02-01 to 2023-01-31 |
2022-02-01 to 2023-01-31 |
2022-02-01 to 2023-01-31 |
2022-02-01 to 2023-01-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||
| Revenue [abstract] | ||||||||||||||||
| Revenue | — | — | — | — |
741,100,000
GBP
|
— | — | — | — | — | — | — | — |
663,700,000
GBP
|
— | — |
| Material income and expense [abstract] | ||||||||||||||||
| Gains (losses) on disposals of non-current assets [abstract] | ||||||||||||||||
| Gains (losses) on disposals of non-current assets | — | — | — | — |
500,000
GBP
|
— | — | — | — | — | — | — | — |
100,000
GBP
|
— | — |
| Investment income | — | — | — | — |
15,400,000
GBP
|
— | — | — | — | — | — | — | — |
9,700,000
GBP
|
— | — |
| Selling, general and administrative expense [abstract] | ||||||||||||||||
| Selling, general and administrative expense | — | — | — | — |
214,200,000
GBP
|
— | — | — | — | — | — | — | — |
181,500,000
GBP
|
— | — |
| Expenses by nature [abstract] | ||||||||||||||||
| Services expense | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Insurance expense | — | — | — | — |
249,200,000
GBP
|
— | — | — | — | — | — | — | — |
215,800,000
GBP
|
— | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income |
–
GBP
|
–
GBP
|
143,800,000
GBP
|
–
GBP
|
143,500,000
GBP
|
–
GBP
|
300,000
GBP
|
–
GBP
|
–
GBP
|
2,500,000
GBP
|
–
GBP
|
–
GBP
|
287,400,000
GBP
|
289,900,000
GBP
|
–
GBP
|
–
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — |
143,500,000
GBP
|
— | — | — | — | — | — | — | — |
289,900,000
GBP
|
— | — |