Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
3, 235
GBP
|
2, 852
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
1 2,644
GBP
|
11 , 7 1 6
GBP
|
— |
| Investment property [abstract] | |||
| Investment property |
63,000,000
GBP
|
67,000,000
GBP
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments accounted for using equity method |
787,000,000
GBP
|
55 4
GBP
|
— |
| Trade and other non-current receivables [abstract] | |||
| Other non-current receivables |
618,000,000
GBP
|
5 51
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current net defined benefit asset |
1, 297
GBP
|
483,000,000
GBP
|
— |
| Non-current investments other than investments accounted for using equity method |
99,000,000
GBP
|
76,000,000
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
976,000,000
GBP
|
8 11
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
3 ,1 0 7
GBP
|
2 , 9 17
GBP
|
2,6 67
GBP
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
5,189,000,000
GBP
|
4, 6 0 4
GBP
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
53,000,000
GBP
|
457,000,000
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other non-current payables [abstract] | |||
| Non-current accruals and non-current deferred income including non-current contract liabilities [abstract] | |||
| Non-current deferred income including non-current contract liabilities [abstract] | |||
| Non-current contract liabilities [abstract] | |||
| Non-current contract liabilities |
94 5
GBP
|
51 9
GBP
|
— |
| Other non-current payables |
1, 4 41
GBP
|
1, 2 4 8
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Current accruals and current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities [abstract] | |||
| Current contract liabilities [abstract] | |||
| Current contract liabilities |
3 ,8 8 2
GBP
|
2 , 8 74
GBP
|
— |
| Trade and other current payables |
4 ,9 9 0
GBP
|
4,636,000,000
GBP
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current net defined benefit liability |
6 51
GBP
|
2,6 07
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
82,000,000
GBP
|
85,000,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
2, 930
GBP
|
212,000,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
31, 4 62
GBP
|
2 7, 13 5
GBP
|
— |
| Liabilities |
20,062,000,000
GBP
|
19 , 4 6 7
GBP
|
— |
| Assets (liabilities) |
1 1 ,400
GBP
|
7, 6 6 8
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
10, 63 4
GBP
|
8 , 818
GBP
|
— |
| Current liabilities |
9, 8 46
GBP
|
8,696,000,000
GBP
|
— |
| Assets less current liabilities [abstract] |