Disclosure Of Interests In Other Entities [Text Block]
| Concept |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 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 |
As at 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of interests in other entities [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of interests in subsidiaries [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of subsidiaries [text block] | — | — | — |
30. Subsidiaries
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of subsidiaries [abstract] | |||||||||||||||||||||||||||||
| Disclosure of subsidiaries [line items] | |||||||||||||||||||||||||||||
| Profit (loss), attributable to non-controlling interests | — | — | — |
59,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
49,000,000
GBP
|
— |
36,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Non-controlling interests |
126,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
125,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets |
4,059,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
5,251,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
30,756,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
29,200,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
4,370,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
4,238,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
13,988,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
3,733,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Revenue | — | — | — |
10,858,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
9,545,000,000
GBP
|
— |
9,892,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Profit (loss) | — |
–
GBP
|
–
GBP
|
1,119,000,000
GBP
|
1,060,000,000
GBP
|
59,000,000
GBP
|
— | — |
1,060,000,000
GBP
|
–
GBP
|
–
GBP
|
49,000,000
GBP
|
–
GBP
|
1,390,000,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
1,439,000,000
GBP
|
1,390,000,000
GBP
|
1,181,000,000
GBP
|
1,145,000,000
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
36,000,000
GBP
|
–
GBP
|
1,145,000,000
GBP
|
| Comprehensive income | — |
–
GBP
|
142,000,000
GBP
|
1,943,000,000
GBP
|
1,154,000,000
GBP
|
49,000,000
GBP
|
— | — |
1,894,000,000
GBP
|
–
GBP
|
598,000,000
GBP
|
49,000,000
GBP
|
9,000,000
GBP
|
1,380,000,000
GBP
|
— |
–
GBP
|
34,000,000
GBP
|
–
GBP
|
1,429,000,000
GBP
|
1,405,000,000
GBP
|
1,012,000,000
GBP
|
1,145,000,000
GBP
|
–
GBP
|
–
GBP
|
— |
170,000,000
GBP
|
37,000,000
GBP
|
–
GBP
|
975,000,000
GBP
|
| Disclosure of interests in associates [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of associates [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of associates [abstract] | |||||||||||||||||||||||||||||
| Disclosure of associates [line items] | |||||||||||||||||||||||||||||
| Proportion of ownership interest in associate | — | — | — | — | — | — | — |
0.32
xbrli:pure
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — |
–
GBP
|
142,000,000
GBP
|
824,000,000
GBP
|
94,000,000
GBP
|
10,000,000
GBP
|
— | — |
834,000,000
GBP
|
–
GBP
|
598,000,000
GBP
|
–
GBP
|
9,000,000
GBP
|
10,000,000
GBP
|
— |
–
GBP
|
34,000,000
GBP
|
–
GBP
|
10,000,000
GBP
|
15,000,000
GBP
|
169,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— |
170,000,000
GBP
|
1,000,000
GBP
|
–
GBP
|
170,000,000
GBP
|
| Disclosure of interests in joint arrangements [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of joint ventures [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of joint ventures [abstract] | |||||||||||||||||||||||||||||
| Disclosure of joint ventures [line items] | |||||||||||||||||||||||||||||
| Cash and cash equivalents |
684,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
414,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
333,000,000
GBP
|
— | — | — | — |
| Tax expense (income) | — | — | — |
499,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
197,000,000
GBP
|
— |
410,000,000
GBP
|
— | — | — | — | — | — | — | — |
| Disclosure of investment entities [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of information about unconsolidated subsidiaries [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of information about unconsolidated subsidiaries [abstract] | |||||||||||||||||||||||||||||
| Disclosure of information about unconsolidated subsidiaries [line items] | |||||||||||||||||||||||||||||
| Proportion of ownership interest in subsidiary | — | — | — | — | — | — |
0.68
xbrli:pure
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |