Statement Of Comprehensive Income [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 |
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 |
2018-01-01 to 2018-12-31 |
2018-01-01 to 2018-12-31 |
2018-01-01 to 2018-12-31 |
2018-01-01 to 2018-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||
| Profit (loss) |
1,236,000,000
USD
|
1,237,000,000
USD
|
1,000,000
USD
|
— | — |
1,339,000,000
USD
|
1,341,000,000
USD
|
2,000,000
USD
|
2,243,000,000
USD
|
2,238,000,000
USD
|
— |
5,000,000
USD
|
| Other comprehensive income [abstract] | ||||||||||||
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||
| Cash flow hedges [abstract] | ||||||||||||
| Other comprehensive income, before tax, cash flow hedges | — |
205,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||||
| Income tax relating to cash flow hedges included in other comprehensive income | — |
41,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
1,236,000,000
USD
|
234,000,000
USD
|
2,000,000
USD
|
1,000,000,000
USD
|
642,000,000
USD
|
1,339,000,000
USD
|
1,985,000,000
USD
|
4,000,000
USD
|
1,089,000,000
USD
|
2,238,000,000
USD
|
1,151,000,000
USD
|
2,000,000
USD
|
| Comprehensive income attributable to [abstract] | ||||||||||||
| Comprehensive income, attributable to owners of parent | — |
236,000,000
USD
|
— | — | — | — |
1,981,000,000
USD
|
— |
1,087,000,000
USD
|
— | — | — |
| Comprehensive income, attributable to non-controlling interests | — |
2,000,000
USD
|
— | — | — | — |
4,000,000
USD
|
— |
2,000,000
USD
|
— | — | — |