Disclosure Of Entity's Operating Segments [Text Block]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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] | ||||||||||||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — | — | — | — | — | — |
22,000,000
GBP
|
— |
194,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Tax expense (income) | — | — | — | — | — | — | — | — |
12 0
GBP
|
— |
15,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Profit (loss) before tax | — | — | — | — | — | — | — | — |
1,115,000,000
GBP
|
— |
823,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Profit (loss) from continuing operations |
–
GBP
|
994,000,000
GBP
|
— |
–
GBP
|
1,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
995,000,000
GBP
|
994,000,000
GBP
|
853,000,000
GBP
|
848,000,000
GBP
|
5,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
–
GBP
|
848,000,000
GBP
|
| Profit (loss) | — | — | — | — | — | — | — | — |
995,000,000
GBP
|
— |
838,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Assets | — | — |
11,418,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
10,478,000,000
GBP
|
— | — | — |
| Investments accounted for using equity method | — | — |
274,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
1,371,000,000
GBP
|
— | — | — |
| Liabilities | — | — |
3,562,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
3,665,000,000
GBP
|
— | — | — |
| Cash flows from (used in) operating activities | — | — | — | — | — | — | — | — |
14,000,000
GBP
|
— |
56,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — | — | — | — |
755,000,000
GBP
|
— |
1,014,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — | — | — | — |
243,000,000
GBP
|
— |
1,064,000,000
GBP
|
— | — | — | — | — | — | — | — | — |