Statement Of Financial Position [Abstract]
| Concept |
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 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 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
As at 2019-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — |
26,481,000,000
USD
|
— | — | — | — |
27,516,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — | — |
8,323,000,000
USD
|
— | — | — | — |
8,460,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — |
249,000,000
USD
|
— | — | — | — |
237,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — | — |
43,381,000,000
USD
|
— | — | — | — |
43,699,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Current inventories | — | — | — | — | — | — |
1,049,000,000
USD
|
— | — | — | — |
1,430,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables | — | — | — | — | — | — |
5,603,000,000
USD
|
— | — | — | — |
5,351,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current tax assets, current | — | — | — | — | — | — |
238,000,000
USD
|
— | — | — | — |
161,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — |
5,865,000,000
USD
|
— | — | — | — |
4,768,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners | — | — | — | — | — | — |
218,000,000
USD
|
— | — | — | — |
149,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current assets | — | — | — | — | — | — |
12,736,000,000
USD
|
— | — | — | — |
11,700,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — |
56,117,000,000
USD
|
— | — | — | — |
55,399,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — |
3,632,000,000
USD
|
— | — | — | — |
3,774,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — | — |
29,850,000,000
USD
|
— | — | — | — |
28,098,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — | — |
1,004,000,000
USD
|
— | — | — | — |
739,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
26,698,000,000
USD
|
1,004,000,000
USD
|
42,000,000
USD
|
29,850,000,000
USD
|
3,632,000,000
USD
|
432,000,000
USD
|
30,854,000,000
USD
|
6,000,000
USD
|
28,098,000,000
USD
|
739,000,000
USD
|
692,000,000
USD
|
28,837,000,000
USD
|
4,000,000
USD
|
25,117,000,000
USD
|
97,000,000
USD
|
3,774,000,000
USD
|
103,000,000
USD
|
3,774,000,000
USD
|
29,756,000,000
USD
|
202,000,000
USD
|
33,380,000,000
USD
|
771,000,000
USD
|
32,609,000,000
USD
|
616,000,000
USD
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||
| Non-current provisions | — | — | — | — | — | — |
556,000,000
USD
|
— | — | — | — |
636,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — | — |
525,000,000
USD
|
— | — | — | — |
362,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, non-current | — | — | — | — | — | — |
237,000,000
USD
|
— | — | — | — |
335,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — | — |
15,209,000,000
USD
|
— | — | — | — |
16,727,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||||||||
| Current provisions | — | — | — | — | — | — |
725,000,000
USD
|
— | — | — | — |
458,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current | — | — | — | — | — | — |
305,000,000
USD
|
— | — | — | — |
307,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities included in disposal groups classified as held for sale | — | — | — | — | — | — |
91,000,000
USD
|
— | — | — | — |
75,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — | — | — | — | — | — |
10,054,000,000
USD
|
— | — | — | — |
9,835,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — |
25,263,000,000
USD
|
— | — | — | — |
26,562,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — |
56,117,000,000
USD
|
— | — | — | — |
55,399,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |