Statement Of Financial Position [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Property, plant and equipment | — |
542,000,000
USD
|
— | — | — | — |
560,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — |
155,000,000
USD
|
— | — | — | — |
177,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Investments accounted for using equity method | — |
1 093
USD
|
— | — | — | — |
973,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — |
64,000,000
USD
|
— | — | — | — |
55,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — |
2 702
USD
|
— | — | — | — |
2 736
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Current inventories | — |
93,000,000
USD
|
— | — | — | — |
84,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — |
231,000,000
USD
|
— | — | — | — |
269,000,000
USD
|
— | — | — | — | — | — | — | — |
153,000,000
USD
|
— | — |
| Current assets | — |
746,000,000
USD
|
— | — | — | — |
751,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets | — |
3 448
USD
|
— | — | — | — |
3 488
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Equity attributable to owners of parent | — |
2 009
USD
|
— | — | — | — |
2 008
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — |
221,000,000
USD
|
— | — | — | — |
257,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
0
USD
|
2 230
USD
|
1 891
USD
|
2 009
USD
|
221,000,000
USD
|
118,000,000
USD
|
2 265
USD
|
122,000,000
USD
|
1 890
USD
|
257,000,000
USD
|
4,000,000
USD
|
2 008
USD
|
1 761
USD
|
202,000,000
USD
|
1 880
USD
|
2 082
USD
|
4,000,000
USD
|
122,000,000
USD
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Deferred tax liabilities | — |
11,000,000
USD
|
— | — | — | — |
12,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — |
396,000,000
USD
|
— | — | — | — |
647,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Current tax liabilities, current | — |
13,000,000
USD
|
— | — | — | — |
14,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — |
821,000,000
USD
|
— | — | — | — |
576,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — |
3 448
USD
|
— | — | — | — |
3 488
USD
|
— | — | — | — | — | — | — | — | — | — | — |