Statement Of Comprehensive Income [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||
| Profit (loss) |
5,000,000
USD
|
— | — |
1,805,000,000
USD
|
— | — | — | — |
1,800,000,000
USD
|
1,805,000,000
USD
|
4,368,000,000
USD
|
— |
4,405,000,000
USD
|
— | — | — | — | — |
37,000,000
USD
|
4,405,000,000
USD
|
| Other comprehensive income [abstract] | ||||||||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||||||||
| Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans | — | — | — |
87,000,000
USD
|
— | — | — | — |
87,000,000
USD
|
87,000,000
USD
|
68,000,000
USD
|
— |
68,000,000
USD
|
— | — | — | — | — | — |
68,000,000
USD
|
| Other comprehensive income that will not be reclassified to profit or loss, net of tax | — | — | — | — | — | — | — | — |
87,000,000
USD
|
— |
68,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||||||||
| Cash flow hedges [abstract] | ||||||||||||||||||||
| Other comprehensive income, net of tax, cash flow hedges | — |
1,000,000
USD
|
— |
1,000,000
USD
|
— | — | — | — |
1,000,000
USD
|
— |
-
USD
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income that will be reclassified to profit or loss, net of tax | — | — | — | — | — | — | — | — |
259,000,000
USD
|
— |
203,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income |
10,000,000
USD
|
1,000,000
USD
|
-
USD
|
182,000,000
USD
|
268,000,000
USD
|
-
USD
|
-
USD
|
-
USD
|
172,000,000
USD
|
87,000,000
USD
|
135,000,000
USD
|
-
USD
|
68,000,000
USD
|
-
USD
|
-
USD
|
-
USD
|
-
USD
|
176,000,000
USD
|
27,000,000
USD
|
108,000,000
USD
|
| Comprehensive income |
15,000,000
USD
|
1,000,000
USD
|
-
USD
|
1,987,000,000
USD
|
268,000,000
USD
|
-
USD
|
-
USD
|
-
USD
|
1,972,000,000
USD
|
1,718,000,000
USD
|
4,233,000,000
USD
|
-
USD
|
4,473,000,000
USD
|
-
USD
|
-
USD
|
-
USD
|
-
USD
|
176,000,000
USD
|
64,000,000
USD
|
4,297,000,000
USD
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — | — |
1,987,000,000
USD
|
— |
4,297,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — | — |
15,000,000
USD
|
— |
64,000,000
USD
|
— | — | — | — | — | — | — | — | — |