Disclosure Of Financial Instruments [Text Block]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of financial instruments [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 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] | |||||||||||||||||
| Gains (losses) on cash flow hedges, net of tax |
−
GBP
|
−
GBP
|
−
GBP
|
3 8 .0
GBP
|
−
GBP
|
3 8 .0
GBP
|
3 8 .0
GBP
|
−
GBP
|
−
GBP
|
−
GBP
|
5 .9
GBP
|
−
GBP
|
−
GBP
|
5 .9
GBP
|
−
GBP
|
5 .9
GBP
|
–
GBP
|
| Gains (losses) on hedges of net investments in foreign operations, net of tax |
−
GBP
|
−
GBP
|
−
GBP
|
45,500,000
GBP
|
−
GBP
|
45. 5
GBP
|
45,500,000
GBP
|
−
GBP
|
−
GBP
|
−
GBP
|
9. 7
GBP
|
−
GBP
|
−
GBP
|
9. 7
GBP
|
−
GBP
|
9. 7
GBP
|
–
GBP
|