Statement Of Financial Position [Abstract]
| Concept |
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 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — |
2 ,536
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2,0 66
GBP
|
— | — | — | — | — | — | — | — | — |
| Investment property | — | — | — | — |
19,698,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 9 ,1 0 6
GBP
|
— | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — | — |
4 69
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
4 56
GBP
|
— | — | — | — | — | — | — | — | — |
| Current tax assets | — | — | — | — |
375,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
41 8
GBP
|
— | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — |
119,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
10 8
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — |
6 ,908
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
6 ,7 7 6
GBP
|
— | — | — | — |
6,04 6
GBP
|
— | — | — | — |
| Assets | — | — | — | — |
2 1 9 ,1 3 4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2 28 ,7 2 6
GBP
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||
| Issued capital | — | — | — | — |
130,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
13 0
GBP
|
— | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — |
16, 550
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
16, 85 3
GBP
|
— | — | — | — | — | — | — | — | — |
| Share premium | — | — | — | — |
370,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
370,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Treasury shares | — | — | — | — |
1,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
1,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — |
11 , 6 6 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
1 1 , 6 5 8
GBP
|
— | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — |
5, 296
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
5,57 7
GBP
|
— | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — |
49,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
8,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Equity |
1,000,000
GBP
|
16, 550
GBP
|
93,000,000
GBP
|
1 1 , 6 6 0
GBP
|
5,345,000,000
GBP
|
5,296,000,000
GBP
|
370,000,000
GBP
|
49,000,000
GBP
|
130,000,000
GBP
|
1 1 7
GBP
|
16 ,85 3
GBP
|
8,000,000
GBP
|
5, 57 7
GBP
|
130,000,000
GBP
|
1,000,000
GBP
|
1 1 , 6 5 8
GBP
|
3 70
GBP
|
5,585,000,000
GBP
|
5 ,1 2 5
GBP
|
6,000,000
GBP
|
11 , 6 9 0
GBP
|
3 70
GBP
|
5 ,1 3 1
GBP
|
16, 3 42
GBP
|
1,000,000
GBP
|
2 6
GBP
|
130,000,000
GBP
|
| Liabilities [abstract] | |||||||||||||||||||||||||||
| Provisions [abstract] | |||||||||||||||||||||||||||
| Provisions | — | — | — | — |
138,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
235,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Other financial liabilities | — | — | — | — |
2, 882
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
3 , 391
GBP
|
— | — | — | — | — | — | — | — | — |
| Insurance contracts issued that are liabilities | — | — | — | — |
63,223,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
76,65 0
GBP
|
— | — | — | — | — | — | — | — | — |
| Current tax liabilities | — | — | — | — |
323,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
276,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — |
1, 157
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
91 6
GBP
|
— | — | — | — | — | — | — | — | — |
| Liabilities included in disposal groups classified as held for sale | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
75,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — |
2 13 ,78 9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2 2 3 ,1 41
GBP
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — |
2 1 9 ,1 3 4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
2 2 8 ,7 26
GBP
|
— | — | — | — | — | — | — | — | — |