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 |
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 |
2022-02-01 to 2023-01-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||
| Revenue | — | — | — | — |
1 2,980
GBP
|
— | — |
–
GBP
|
12,980,000,000
GBP
|
— | — |
13,05 9
GBP
|
— | — | — |
–
GBP
|
1 3,059
GBP
|
— |
| Material income and expense [abstract] | ||||||||||||||||||
| Finance income (cost) | — | — | — | — |
105,000,000
GBP
|
— | — |
–
GBP
|
105,000,000
GBP
|
— | — |
112,000,000
GBP
|
— | — | — |
–
GBP
|
112,000,000
GBP
|
— |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — | — |
1,000,000
GBP
|
— | — |
–
GBP
|
1,000,000
GBP
|
— | — |
5,000,000
GBP
|
— | — | — |
–
GBP
|
5,000,000
GBP
|
— |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — | — | — | — |
28,000,000
GBP
|
— | — | — | — | — | — |
85,000,000
GBP
|
— | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — | — | — |
2,000,000
GBP
|
— | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||
| Comprehensive income |
–
GBP
|
–
GBP
|
325,000,000
GBP
|
22,000,000
GBP
|
303,000,000
GBP
|
–
GBP
|
–
GBP
|
— | — |
181,000,000
GBP
|
–
GBP
|
471,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — |
2 90
GBP
|