Statement Of Cash Flows [Abstract]
| Concept |
2023-04-05 to 2024-04-04 |
2022-04-05 to 2023-04-04 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Increase (decrease) in working capital |
4,256,000,000
GBP
|
2,965,000,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||
| Purchase of financial instruments, classified as investing activities |
8,598,000,000
GBP
|
14,039,000,000
GBP
|
| Proceeds from sales or maturity of financial instruments, classified as investing activities |
9,736,000,000
GBP
|
12,097,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Proceeds from issue of subordinated liabilities |
1,385,000,000
GBP
|
646,000,000
GBP
|
| Repayments of subordinated liabilities |
771,000,000
GBP
|
2,197,000,000
GBP
|