Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Adjustments for finance income (cost) |
279,000,000
GBP
|
334,000,000
GBP
|
| Adjustments for decrease (increase) in trade and other receivables |
610,000,000
GBP
|
–
GBP
|
| Adjustments for increase (decrease) in trade and other payables |
615,000,000
GBP
|
12 2
GBP
|
| Adjustments for increase (decrease) in employee benefit liabilities |
18,000,000
GBP
|
1, 3 9 6
GBP
|
| Adjustments for depreciation and amortisation expense and impairment loss (reversal of impairment loss) recognised in profit or loss |
72 0
GBP
|
6 75
GBP
|
| Adjustments for gain (loss) on disposal of investments in subsidiaries, joint ventures and associates |
15 8
GBP
|
5,000,000
GBP
|
| Adjustments for undistributed profits of investments accounted for using equity method |
13 9
GBP
|
69,000,000
GBP
|
| Income taxes paid, classified as operating activities |
23 4
GBP
|
2 51
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||
| Purchase of interests in investments accounted for using equity method |
3,000,000
GBP
|
2,000,000
GBP
|
| Purchase of investments other than investments accounted for using equity method |
15,000,000
GBP
|
–
GBP
|
| Proceeds from sales of investments other than investments accounted for using equity method |
–
GBP
|
19,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities |
777,000,000
GBP
|
74 6
GBP
|
| Dividends paid to non-controlling interests, classified as financing activities |
20 2
GBP
|
19,000,000
GBP
|