Statement Of Financial Position [Abstract]
| Concept |
As at 2022-09-17 |
As at 2022-09-17 |
As at 2022-09-17 |
As at 2022-09-17 |
As at 2022-09-17 |
As at 2022-09-17 |
As at 2022-09-17 |
As at 2022-09-17 |
As at 2021-09-18 |
As at 2021-09-18 |
As at 2021-09-18 |
As at 2021-09-18 |
As at 2021-09-18 |
As at 2021-09-18 |
As at 2021-09-18 |
As at 2021-09-18 |
As at 2020-09-12 |
As at 2020-09-12 |
As at 2020-09-12 |
As at 2020-09-12 |
As at 2020-09-12 |
As at 2020-09-12 |
As at 2020-09-12 |
As at 2020-09-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment |
5,599,000,000
GBP
|
— | — | — | — | — | — | — |
5,286,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
2,456,000,000
GBP
|
— | — | — | — | — | — | — |
2,649,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets |
158,000,000
GBP
|
— | — | — | — | — | — | — |
218,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax assets, non-current |
23,000,000
GBP
|
— | — | — | — | — | — | — |
23,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
11,941,000,000
GBP
|
— | — | — | — | — | — | — |
10,790,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Current inventories |
3,259,000,000
GBP
|
— | — | — | — | — | — | — |
2,151,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables |
1,758,000,000
GBP
|
— | — | — | — | — | — | — |
1,367,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax assets, current |
67,000,000
GBP
|
— | — | — | — | — | — | — |
58,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current biological assets |
105,000,000
GBP
|
— | — | — | — | — | — | — |
85,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
2,121,000,000
GBP
|
— | — | — | — | — | — | — |
2,275,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
45,000,000
GBP
|
— | — | — | — | — | — | — |
13,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets |
7,834,000,000
GBP
|
— | — | — | — | — | — | — |
6,105,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
19,775,000,000
GBP
|
— | — | — | — | — | — | — |
16,895,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital |
45,000,000
GBP
|
— | — | — | — | — | — | — |
45,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings |
10,649,000,000
GBP
|
— | — | — | — | — | — | — |
9,692,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves |
178,000,000
GBP
|
— | — | — | — | — | — | — |
175,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
11,448,000,000
GBP
|
— | — | — | — | — | — | — |
9,921,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests |
106,000,000
GBP
|
— | — | — | — | — | — | — |
83,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
11,554,000,000
GBP
|
178,000,000
GBP
|
45,000,000
GBP
|
154,000,000
GBP
|
422,000,000
GBP
|
10,649,000,000
GBP
|
106,000,000
GBP
|
11,448,000,000
GBP
|
10,004,000,000
GBP
|
175,000,000
GBP
|
45,000,000
GBP
|
43,000,000
GBP
|
34,000,000
GBP
|
9,692,000,000
GBP
|
83,000,000
GBP
|
9,921,000,000
GBP
|
175,000,000
GBP
|
45,000,000
GBP
|
84,000,000
GBP
|
9,355,000,000
GBP
|
9,439,000,000
GBP
|
323,000,000
GBP
|
8,819,000,000
GBP
|
7,000,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||
| Non-current provisions |
26,000,000
GBP
|
— | — | — | — | — | — | — |
31,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
647,000,000
GBP
|
— | — | — | — | — | — | — |
363,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
4,168,000,000
GBP
|
— | — | — | — | — | — | — |
3,609,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||||||||
| Current provisions |
87,000,000
GBP
|
— | — | — | — | — | — | — |
71,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables |
3,114,000,000
GBP
|
— | — | — | — | — | — | — |
2,386,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities other than liabilities included in disposal groups classified as held for sale |
14,000,000
GBP
|
— | — | — | — | — | — | — |
−
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
4,053,000,000
GBP
|
— | — | — | — | — | — | — |
3,282,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
8,221,000,000
GBP
|
— | — | — | — | — | — | — |
6,891,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |