Disclosure Of Analysis Of Other Comprehensive Income By Item [Text Block]
| Concept |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of analysis of other comprehensive income by item [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of analysis of other comprehensive income by item [abstract] | ||||||||||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||||||||||
| Other comprehensive income, net of tax, cash flow hedges | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Gains (losses) on cash flow hedges, net of tax |
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
3,000,000
GBP
|
3,000,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
1,500,000
GBP
|
1. 5
GBP
|
—
GBP
|
| Other comprehensive income, net of tax, hedges of net investments in foreign operations | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Gains (losses) on hedges of net investments in foreign operations, net of tax | — | — | — | — | — | — |
3,600,000
GBP
|
— | — | — | — |
5,300,000
GBP
|
— | — |
| Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans |
—
GBP
|
—
GBP
|
—
GBP
|
2 7. 5
GBP
|
—
GBP
|
—
GBP
|
27,500,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
2 4 .1
GBP
|
24,100,000
GBP
|
—
GBP
|
—
GBP
|