Disclosure Of Financial Instruments [Text Block]
| Concept |
2021-04-05 to 2022-04-04 |
2020-04-05 to 2021-04-04 |
|---|---|---|
| Disclosure of financial instruments [text block] | — | — |
| Income, expense, gains or losses of financial instruments [abstract] | ||
| Gains (losses) on financial instruments [abstract] | ||
| Other comprehensive income, before tax, gains (losses) from investments in equity instruments |
10,000,000
GBP
|
4,000,000
GBP
|
| Other comprehensive income, before tax, financial assets measured at fair value through other comprehensive income | — | — |
| Gains (losses) on financial assets measured at fair value through other comprehensive income, before tax |
12,000,000
GBP
|
215,000,000
GBP
|
| Reclassification adjustments on financial assets measured at fair value through other comprehensive income, before tax |
48,000,000
GBP
|
40,000,000
GBP
|
| Disclosure of general hedge accounting [text block] | — | — |
| Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [text block] | — | — |
| Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [abstract] | ||
| Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items] | ||
| Hedging gains (losses) for hedge of group of items with offsetting risk positions |
7,000,000
GBP
|
34,000,000
GBP
|