Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Cash flows from (used in) operations before changes in working capital |
6,904,000,000
GBP
|
2,332,000,000
GBP
|
| Increase (decrease) in working capital |
31,835,000,000
GBP
|
26,729,000,000
GBP
|
| Adjustments for decrease (increase) in other assets |
19,000,000
GBP
|
145,000,000
GBP
|
| Adjustments for increase (decrease) in other liabilities |
1,199,000,000
GBP
|
672,000,000
GBP
|
| Adjustments for increase (decrease) in employee benefit liabilities |
173,000,000
GBP
|
168,000,000
GBP
|
| Adjustments for decrease (increase) in loans and advances | — | — |
| Adjustments for decrease (increase) in loans and advances to banks |
89,000,000
GBP
|
401,000,000
GBP
|
| Adjustments for decrease (increase) in loans and advances to customers |
14,511,000,000
GBP
|
38,384,000,000
GBP
|
| Adjustments for decrease (increase) in derivative financial assets |
930,000,000
GBP
|
261,000,000
GBP
|
| Adjustments for increase (decrease) in deposits | — | — |
| Adjustments for increase (decrease) in deposits from banks |
7,960,000,000
GBP
|
634,000,000
GBP
|
| Adjustments for increase (decrease) in deposits from customers |
35,835,000,000
GBP
|
51,488,000,000
GBP
|
| Adjustments for increase (decrease) in derivative financial liabilities |
2,433,000,000
GBP
|
1,654,000,000
GBP
|
| Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss, loans and advances |
813,000,000
GBP
|
2,169,000,000
GBP
|
| Adjustments for gain (loss) on disposal of investments in subsidiaries, joint ventures and associates |
—
GBP
|
4,000,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||
| Purchase of financial instruments, classified as investing activities |
3,193,000,000
GBP
|
7,816,000,000
GBP
|
| Proceeds from sales or maturity of financial instruments, classified as investing activities |
10,272,000,000
GBP
|
12,091,000,000
GBP
|