Statement Of Changes In Net Assets Available For Benefits [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|
| Statement of changes in net assets available for benefits [abstract] | ||
| Reconciliation of changes in net assets available for benefits [abstract] | ||
| Changes in net assets available for benefits [abstract] | ||
| Investment income |
12, 909
GBP
|
9, 255
GBP
|
| Other income |
115,000,000
GBP
|
61,000,000
GBP
|
| Administrative expenses |
2 , 8 8 4
GBP
|
2 ,73 4
GBP
|
| Tax expense (income) |
615,000,000
GBP
|
463,000,000
GBP
|