Disclosure Of Effect Of Changes In Foreign Exchange Rates [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 |
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 |
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 effect of changes in foreign exchange rates [text block] |
Foreign exchange sensitivity
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of information when currency is not exchangeable into another currency [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of information when foreign operation’s functional currency is not exchangeable into presentation currency [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of summarised financial information about foreign operation [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of summarised financial information about foreign operation [abstract] | |||||||||||||||||||||||
| Disclosure of summarised financial information about foreign operation [line items] | |||||||||||||||||||||||
| Non-current assets | — |
29,237,000,000
GBP
|
— | — | — | — | — | — |
30,756,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets | — |
4,818,000,000
GBP
|
— | — | — | — | — | — |
4,059,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — |
12,686,000,000
GBP
|
— | — | — | — | — | — |
13,988,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — |
4,640,000,000
GBP
|
— | — | — | — | — | — |
4,370,000,000
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
|
| 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
|
| 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
|