Analysis Of Income And Expense [Abstract]
| Concept |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||
| Revenue [abstract] | ||||||||||||||||
| Revenue | — | — |
39,740,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
38,890,000,000
USD
|
— | — |
| Material income and expense [abstract] | ||||||||||||||||
| Gains (losses) on disposals of non-current assets [abstract] | ||||||||||||||||
| Gains (losses) on disposals of non-current assets | — | — |
202,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
71,000,000
USD
|
— | — |
| Operating expense | — | — |
31,804,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
33,130,000,000
USD
|
— | — |
| Expenses by nature [abstract] | ||||||||||||||||
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||||||
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss | — | — |
4,541,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
4,287,000,000
USD
|
— | — |
| Other expenses, by nature | — | — |
-
USD
|
— | — | — | — | — | — | — | — | — | — |
60,000,000
USD
|
— | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||
| Share of profit (loss) of associates accounted for using equity method | — | — |
177,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
136,000,000
USD
|
— | — |
| Share of profit (loss) of joint ventures accounted for using equity method | — | — |
122,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
93,000,000
USD
|
— | — |
| Share of other comprehensive income of associates and joint ventures accounted for using equity method, net of tax [abstract] | ||||||||||||||||
| Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax | — | — |
5,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
1,000,000
USD
|
— | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — | — |
4,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
10,000,000
USD
|
— | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — |
10,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
16,000,000
USD
|
— | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income |
2,645,000,000
USD
|
-
USD
|
3,008,000,000
USD
|
260,000,000
USD
|
47,000,000
USD
|
55,000,000
USD
|
2,961,000,000
USD
|
1,000,000
USD
|
76,000,000
USD
|
-
USD
|
110,000,000
USD
|
180,000,000
USD
|
-
USD
|
139,000,000
USD
|
29,000,000
USD
|
6,000,000
USD
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
2,961,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
110,000,000
USD
|
— | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — |
47,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
29,000,000
USD
|
— | — |