Disclosure Of Interests In Other Entities [Text Block]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
62,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
59,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
49,000,000
GBP
|
— |
| Non-controlling interests | — |
123,000,000
GBP
|
— | — | — | — | — | — | — | — |
126,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets | — |
4,818,000,000
GBP
|
— | — | — | — | — | — | — | — |
4,059,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — |
29,237,000,000
GBP
|
— | — | — | — | — | — | — | — |
30,756,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — |
4,640,000,000
GBP
|
— | — | — | — | — | — | — | — |
4,370,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — |
12,686,000,000
GBP
|
— | — | — | — | — | — | — | — |
13,988,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Revenue |
11,302,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
10,858,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
9,545,000,000
GBP
|
— |
| Profit (loss) |
1,111,000,000
GBP
|
— |
1,049,000,000
GBP
|
—
GBP
|
62,000,000
GBP
|
1,049,000,000
GBP
|
—
GBP
|
—
GBP
|
— | — | — |
—
GBP
|
—
GBP
|
1,119,000,000
GBP
|
1,060,000,000
GBP
|
59,000,000
GBP
|
1,060,000,000
GBP
|
—
GBP
|
49,000,000
GBP
|
—
GBP
|
1,390,000,000
GBP
|
— |
—
GBP
|
—
GBP
|
1,439,000,000
GBP
|
1,390,000,000
GBP
|
| Comprehensive income |
679,000,000
GBP
|
— |
624,000,000
GBP
|
431,000,000
GBP
|
55,000,000
GBP
|
1,055,000,000
GBP
|
—
GBP
|
—
GBP
|
— | — | — |
—
GBP
|
740,000,000
GBP
|
1,943,000,000
GBP
|
1,154,000,000
GBP
|
49,000,000
GBP
|
1,894,000,000
GBP
|
—
GBP
|
49,000,000
GBP
|
25,000,000
GBP
|
1,380,000,000
GBP
|
— |
—
GBP
|
—
GBP
|
1,429,000,000
GBP
|
1,405,000,000
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 |
432,000,000
GBP
|
— |
425,000,000
GBP
|
431,000,000
GBP
|
7,000,000
GBP
|
6,000,000
GBP
|
—
GBP
|
—
GBP
|
— | — | — |
—
GBP
|
740,000,000
GBP
|
824,000,000
GBP
|
94,000,000
GBP
|
10,000,000
GBP
|
834,000,000
GBP
|
—
GBP
|
—
GBP
|
25,000,000
GBP
|
10,000,000
GBP
|
— |
—
GBP
|
—
GBP
|
10,000,000
GBP
|
15,000,000
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 | — |
1,044,000,000
GBP
|
— | — | — | — | — | — | — | — |
684,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
414,000,000
GBP
|
— | — | — | — |
| Tax expense (income) |
517,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
499,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
197,000,000
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
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |