Disclosure Of Non-Current Assets Held For Sale And Discontinued Operations [Text Block]
| Concept |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
|---|---|---|---|
| Disclosure of non-current assets held for sale and discontinued operations [text block] | — | — | — |
| Disclosure of analysis of single amount of discontinued operations [text block] | — | — | — |
| Disclosure of analysis of single amount of discontinued operations [abstract] | |||
| Disclosure of analysis of single amount of discontinued operations [line items] | |||
| Profit (loss) from discontinued operations |
31,000,000
GBP
|
32,000,000
GBP
|
30,000,000
GBP
|
| Cash flows from continuing and discontinued operations [abstract] | |||
| Cash flows from (used in) operating activities [abstract] | |||
| Cash flows from (used in) operating activities |
10,846,000,000
GBP
|
18,823,000,000
GBP
|
4,030,000,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | |||
| Cash flows from (used in) investing activities |
3,077,000,000
GBP
|
6,636,000,000
GBP
|
2,890,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | |||
| Cash flows from (used in) financing activities |
10,753,000,000
GBP
|
6,773,000,000
GBP
|
4,180,000,000
GBP
|