Analysis Of Income And Expense [Abstract]
| Concept |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||||||||
| Revenue | — | — | — | — |
560. 8
GBP
|
–
GBP
|
560. 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
505. 1
GBP
|
505. 1
GBP
|
— |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — | — |
11,000,000
GBP
|
–
GBP
|
11,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
0. 5
GBP
|
9. 5
GBP
|
9,000,000
GBP
|
— |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||
| Comprehensive income |
–
GBP
|
–
GBP
|
8 7. 0
GBP
|
–
GBP
|
8 7. 0
GBP
|
— | — |
78,300,000
GBP
|
–
GBP
|
–
GBP
|
8 .7
GBP
|
–
GBP
|
41 .1
GBP
|
–
GBP
|
1 .0
GBP
|
35,500,000
GBP
|
–
GBP
|
–
GBP
|
5. 6
GBP
|
–
GBP
|
— | — |
34,500,000
GBP
|
–
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — |
8 7. 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
35,500,000
GBP
|
— |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1. 0
GBP
|
— |