Statement Of Financial Position [Abstract]
| Concept |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Property, plant and equipment |
54,300,000
GBP
|
— | — | — | — | — | — | — |
21,000,000
GBP
|
— | — | — | — | — | — | — |
54,000,000
GBP
|
22,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investment property |
5,002,000,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — |
5,361,200,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method |
43,900,000
GBP
|
— | — | — | — | — | — | — |
2,224,700,000
GBP
|
— | — | — | — | — | — | — |
51,100,000
GBP
|
1,749,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
–
GBP
|
— | — | — | — | — | — | — |
3,000,000
GBP
|
— | — | — | — | — | — | — |
300,000
GBP
|
3,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
5,294,500,000
GBP
|
— | — | — | — | — | — | — |
2,254,900,000
GBP
|
— | — | — | — | — | — | — |
5,627,700,000
GBP
|
1,777,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Trade and other current receivables |
42,400,000
GBP
|
— | — | — | — | — | — | — |
1,788,000,000
GBP
|
— | — | — | — | — | — | — |
41,000,000
GBP
|
1,898,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
76,600,000
GBP
|
— | — | — | — | — | — | — |
67,300,000
GBP
|
— | — | — | — | — | — | — |
105,500,000
GBP
|
90,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
72,700,000
GBP
|
— | — | — | — | — | — | — | — |
88,500,000
GBP
|
| Current assets |
160,700,000
GBP
|
— | — | — | — | — | — | — |
1,855,300,000
GBP
|
— | — | — | — | — | — | — |
179,100,000
GBP
|
1,989,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
5,509,400,000
GBP
|
— | — | — | — | — | — | — |
4,110,200,000
GBP
|
— | — | — | — | — | — | — |
5,909,600,000
GBP
|
3,767,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Issued capital |
5,600,000
GBP
|
— | — | — | — | — | — | — |
5,600,000
GBP
|
— | — | — | — | — | — | — |
5,600,000
GBP
|
5,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
2,931,400,000
GBP
|
— | — | — | — | — | — | — |
202,200,000
GBP
|
— | — | — | — | — | — | — |
3,299,700,000
GBP
|
255,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium |
196,600,000
GBP
|
— | — | — | — | — | — | — |
196,600,000
GBP
|
— | — | — | — | — | — | — |
195,400,000
GBP
|
195,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
941,900,000
GBP
|
— | — | — | — | — | — | — |
925,900,000
GBP
|
— | — | — | — | — | — | — |
941,100,000
GBP
|
925,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
4,075,500,000
GBP
|
5,600,000
GBP
|
925,900,000
GBP
|
202,200,000
GBP
|
1,330,300,000
GBP
|
196,600,000
GBP
|
–
GBP
|
941,900,000
GBP
|
1,330,300,000
GBP
|
–
GBP
|
196,600,000
GBP
|
2,931,400,000
GBP
|
5,600,000
GBP
|
4,075,500,000
GBP
|
3,299,700,000
GBP
|
941,100,000
GBP
|
4,441,800,000
GBP
|
1,382,300,000
GBP
|
925,600,000
GBP
|
–
GBP
|
1,382,300,000
GBP
|
195,400,000
GBP
|
5,600,000
GBP
|
255,700,000
GBP
|
4,441,800,000
GBP
|
195,400,000
GBP
|
–
GBP
|
5,600,000
GBP
|
3,124,500,000
GBP
|
51,900,000
GBP
|
4,263,200,000
GBP
|
5,600,000
GBP
|
1,446,800,000
GBP
|
–
GBP
|
1,446,800,000
GBP
|
5,600,000
GBP
|
926,300,000
GBP
|
321,200,000
GBP
|
193,700,000
GBP
|
939,400,000
GBP
|
193,700,000
GBP
|
4,315,100,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Non-current provisions |
200,000
GBP
|
— | — | — | — | — | — | — |
200,000
GBP
|
— | — | — | — | — | — | — |
300,000
GBP
|
300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
600,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
1,264,700,000
GBP
|
— | — | — | — | — | — | — |
1,070,200,000
GBP
|
— | — | — | — | — | — | — |
1,257,200,000
GBP
|
1,078,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Current provisions |
–
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — |
300,000
GBP
|
300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables |
148,100,000
GBP
|
— | — | — | — | — | — | — |
1,707,500,000
GBP
|
— | — | — | — | — | — | — |
145,900,000
GBP
|
1,304,100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current |
900,000
GBP
|
— | — | — | — | — | — | — |
900,000
GBP
|
— | — | — | — | — | — | — |
500,000
GBP
|
700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
169,200,000
GBP
|
— | — | — | — | — | — | — |
1,709,700,000
GBP
|
— | — | — | — | — | — | — |
210,600,000
GBP
|
1,306,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
1,433,900,000
GBP
|
— | — | — | — | — | — | — |
2,779,900,000
GBP
|
— | — | — | — | — | — | — |
1,467,800,000
GBP
|
2,385,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |