Statement Of Cash Flows [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|
| Statement of cash flows [abstract] | |||
| Cash flows from (used in) operating activities [abstract] | |||
| Adjustments to reconcile profit (loss) other than changes in working capital |
3,208,000,000
GBP
|
1,203,000,000
GBP
|
3,623,000,000
GBP
|
| Increase (decrease) in working capital |
25,679,000,000
GBP
|
48,447,000,000
GBP
|
46,606,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | |||
| Proceeds from issue of subordinated liabilities |
611,000,000
GBP
|
648,000,000
GBP
|
1,634,000,000
GBP
|
| Repayments of subordinated liabilities |
1,250,000,000
GBP
|
3,693,000,000
GBP
|
4,765,000,000
GBP
|