Disclosure Of Entity's Operating Segments [Text Block]
| Concept |
2021-02-01 to 2022-01-31 |
2021-02-01 to 2022-01-31 |
2021-02-01 to 2022-01-31 |
2021-02-01 to 2022-01-31 |
2021-02-01 to 2022-01-31 |
2021-02-01 to 2022-01-31 |
2021-02-01 to 2022-01-31 |
2021-02-01 to 2022-01-31 |
As at 2022-01-31 |
2021-02-01 to 2022-01-31 |
As at 2021-01-31 |
2020-02-01 to 2021-01-31 |
2020-02-01 to 2021-01-31 |
2020-02-01 to 2021-01-31 |
2020-02-01 to 2021-01-31 |
2020-02-01 to 2021-01-31 |
2020-02-01 to 2021-01-31 |
2020-02-01 to 2021-01-31 |
2020-02-01 to 2021-01-31 |
2020-02-01 to 2021-01-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of entity's operating segments [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of operating segments [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of operating segments [abstract] | ||||||||||||||||||||
| Disclosure of operating segments [line items] | ||||||||||||||||||||
| Revenue | — | — | — | — | — |
13,183,000,000
GBP
|
–
GBP
|
13,183,000,000
GBP
|
— | — | — |
12,343,000,000
GBP
|
— | — | — |
12,343,000,000
GBP
|
–
GBP
|
— | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — | — | — |
5,000,000
GBP
|
–
GBP
|
5,000,000
GBP
|
— | — | — |
6,000,000
GBP
|
— | — | — |
6,000,000
GBP
|
–
GBP
|
— | — | — |
| Tax expense (income) | — | — | — | — | — |
164,000,000
GBP
|
48,000,000
GBP
|
212,000,000
GBP
|
— | — | — |
164,000,000
GBP
|
— | — | — |
182,000,000
GBP
|
18,000,000
GBP
|
— | — | — |
| Profit (loss) before tax | — | — | — | — | — |
1,007,000,000
GBP
|
58,000,000
GBP
|
949,000,000
GBP
|
— | — | — |
756,000,000
GBP
|
— | — | — |
786,000,000
GBP
|
30,000,000
GBP
|
— | — | — |
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
843,000,000
GBP
|
–
GBP
|
843,000,000
GBP
|
106,000,000
GBP
|
737,000,000
GBP
|
— |
–
GBP
|
— |
592,000,000
GBP
|
–
GBP
|
–
GBP
|
592,000,000
GBP
|
604,000,000
GBP
|
12,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Assets | — | — | — | — | — | — | — | — |
12,352,000,000
GBP
|
— |
12,269,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — | — | — | — | — |
17,000,000
GBP
|
— |
20,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — | — | — |
5,574,000,000
GBP
|
— |
5,698,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — | — |
1,178,000,000
GBP
|
— | — | — | — | — |
1,650,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — |
385,000,000
GBP
|
— | — | — | — | — |
207,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — |
1,030,000,000
GBP
|
— | — | — | — | — |
562,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Disclosure of products and services [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of products and services [abstract] | ||||||||||||||||||||
| Disclosure of products and services [line items] | ||||||||||||||||||||
| Disclosure of geographical areas [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of geographical areas [abstract] | ||||||||||||||||||||
| Disclosure of geographical areas [line items] | ||||||||||||||||||||
| Disclosure of major customers [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of major customers [abstract] | ||||||||||||||||||||
| Disclosure of major customers [line items] |