Statement Of Cash Flows [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
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] | |||
| Adjustments for decrease (increase) in other assets |
574,000,000
GBP
|
324,000,000
GBP
|
340,000,000
GBP
|
| Adjustments for increase (decrease) in other liabilities |
98,000,000
GBP
|
603,000,000
GBP
|
921,000,000
GBP
|
| Adjustments for increase (decrease) in employee benefit liabilities |
28,000,000
GBP
|
38,000,000
GBP
|
38,000,000
GBP
|
| Adjustments for increase (decrease) in repurchase agreements and cash collateral on securities lent |
4,145,000,000
GBP
|
7,550,000,000
GBP
|
2,958,000,000
GBP
|
| Adjustments for decrease (increase) in reverse repurchase agreements and cash collateral on securities borrowed |
6,818,000,000
GBP
|
7,024,000,000
GBP
|
3,924,000,000
GBP
|
| Adjustments for decrease (increase) in derivative financial assets |
726,000,000
GBP
|
1,725,000,000
GBP
|
90,000,000
GBP
|
| Adjustments for increase (decrease) in derivative financial liabilities |
174,000,000
GBP
|
807,000,000
GBP
|
136,000,000
GBP
|
| Income taxes paid, classified as operating activities |
405,000,000
GBP
|
427,000,000
GBP
|
159,000,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | |||
| Purchase of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets |
496,000,000
GBP
|
613,000,000
GBP
|
373,000,000
GBP
|
| Proceeds from disposals of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets |
159,000,000
GBP
|
437,000,000
GBP
|
166,000,000
GBP
|
| Purchase of financial instruments, classified as investing activities |
2,884,000,000
GBP
|
1,256,000,000
GBP
|
3,015,000,000
GBP
|
| Proceeds from sales or maturity of financial instruments, classified as investing activities |
3,023,000,000
GBP
|
4,509,000,000
GBP
|
9,858,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | |||
| Dividends paid to non-controlling interests, classified as financing activities |
—
GBP
|
—
GBP
|
15,000,000
GBP
|
| Proceeds from issue of bonds, notes and debentures |
4,794,000,000
GBP
|
2,878,000,000
GBP
|
5,614,000,000
GBP
|
| Repayments of bonds, notes and debentures |
3,076,000,000
GBP
|
11,914,000,000
GBP
|
12,037,000,000
GBP
|
| Payments for debt issue costs |
16,000,000
GBP
|
6,000,000
GBP
|
13,000,000
GBP
|