Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-09-30 |
As at 2021-10-01 |
As at 2021-09-30 |
As at 2020-10-01 |
As at 2020-09-30 |
|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||||
| Property, plant and equipment [abstract] | |||||
| Property, plant and equipment |
71,400,000
GBP
|
— |
70,400,000
GBP
|
— |
66,100,000
GBP
|
| Intangible assets and goodwill [abstract] | |||||
| Intangible assets and goodwill |
170,200,000
GBP
|
— |
170,500,000
GBP
|
— |
170,100,000
GBP
|
| Cash and cash equivalents [abstract] | |||||
| Cash [abstract] | |||||
| Cash |
1,930,900,000
GBP
|
— |
1,360,100,000
GBP
|
— | — |
| Cash and cash equivalents |
1,930,500,000
GBP
|
1,359,800,000
GBP
|
1,359,800,000
GBP
|
1,924,600,000
GBP
|
— |
| Miscellaneous assets [abstract] | |||||
| Net defined benefit asset |
7,100,000
GBP
|
— |
-
GBP
|
— |
-
GBP
|
| Derivative financial assets |
779,000,000
GBP
|
— |
44,200,000
GBP
|
— |
463,300,000
GBP
|
| Loans and advances | — | — | — | — | — |
| Loans and advances to banks |
318,400,000
GBP
|
— |
218,100,000
GBP
|
— |
287,900,000
GBP
|
| Loans and advances to customers |
13,650,400,000
GBP
|
— |
13,408,200,000
GBP
|
— |
12,741,100,000
GBP
|
| Cash and bank balances at central banks |
1,612,500,000
GBP
|
— |
1,142,000,000
GBP
|
— |
1,637,100,000
GBP
|
| Other assets |
39,200,000
GBP
|
— |
69,200,000
GBP
|
— |
128,000,000
GBP
|
| Borrowings [abstract] | |||||
| Current borrowings and current portion of non-current borrowings [abstract] | |||||
| Current borrowings |
400,000
GBP
|
— |
300,000
GBP
|
— |
400,000
GBP
|
| Borrowings, by type [abstract] | |||||
| Loans received | — | — | — | — | — |
| Secured bank loans received |
586,000,000
GBP
|
— |
730,000,000
GBP
|
— |
657,800,000
GBP
|
| Miscellaneous liabilities [abstract] | |||||
| Net defined benefit liability |
-
GBP
|
— |
10,300,000
GBP
|
— |
20,400,000
GBP
|
| Derivative financial liabilities |
102,100,000
GBP
|
— |
43,900,000
GBP
|
— |
132,400,000
GBP
|
| Deposit liabilities | — | — | — | — | — |
| Deposits from customers [abstract] | |||||
| Deposits from customers |
10,569,500,000
GBP
|
— |
9,297,400,000
GBP
|
— |
7,867,000,000
GBP
|
| Other liabilities |
513,100,000
GBP
|
— |
90,700,000
GBP
|
— |
100,000,000
GBP
|
| Issued capital [abstract] | |||||
| Issued capital |
241,400,000
GBP
|
— |
262,500,000
GBP
|
— |
261,800,000
GBP
|
| Net assets (liabilities) [abstract] | |||||
| Assets |
16,653,600,000
GBP
|
— |
15,137,000,000
GBP
|
— |
15,505,500,000
GBP
|
| Liabilities |
15,236,300,000
GBP
|
— |
13,895,100,000
GBP
|
— |
14,349,500,000
GBP
|
| Assets less current liabilities [abstract] |