Statement Of Comprehensive Income [Abstract]
| Concept |
2020-01-01 to 2020-12-31 |
2019-12-31 to 2020-12-31 |
2019-12-31 to 2020-12-31 |
2019-12-31 to 2020-12-31 |
2019-12-31 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2019-12-31 to 2020-12-31 |
2019-12-31 to 2020-12-31 |
2019-12-31 to 2020-12-31 |
2019-12-31 to 2020-12-31 |
2019-12-31 to 2020-12-31 |
2018-12-31 to 2019-12-31 |
2018-12-31 to 2019-12-31 |
2018-12-31 to 2019-12-31 |
2018-12-31 to 2019-12-31 |
2018-12-31 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2018-12-31 to 2019-12-31 |
2018-12-31 to 2019-12-31 |
2018-12-31 to 2019-12-31 |
2018-12-31 to 2019-12-31 |
2018-12-31 to 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||
| Profit (loss) |
4,381,000,000
USD
|
USD
|
USD
|
USD
|
USD
|
4,418,000,000
USD
|
4,381,000,000
USD
|
37,000,000
USD
|
USD
|
4,418,000,000
USD
|
USD
|
USD
|
USD
|
USD
|
USD
|
USD
|
615,000,000
USD
|
615,000,000
USD
|
76,000,000
USD
|
USD
|
691,000,000
USD
|
691,000,000
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 |
68,000,000
USD
|
USD
|
USD
|
USD
|
USD
|
68,000,000
USD
|
68,000,000
USD
|
USD
|
USD
|
68,000,000
USD
|
USD
|
USD
|
USD
|
USD
|
USD
|
USD
|
71,000,000
USD
|
71,000,000
USD
|
USD
|
USD
|
71,000,000
USD
|
71,000,000
USD
|
| Other comprehensive income that will not be reclassified to profit or loss, net of tax |
68,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
71,000,000
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 |
-
USD
|
USD
|
USD
|
USD
|
USD
|
USD
|
-
USD
|
USD
|
USD
|
USD
|
USD
|
USD
|
USD
|
2,000,000
USD
|
USD
|
USD
|
2,000,000
USD
|
2,000,000
USD
|
USD
|
USD
|
2,000,000
USD
|
USD
|
| Other comprehensive income that will be reclassified to profit or loss, net of tax |
203,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
17,000,000
USD
|
— | — | — | — | — |
| Other comprehensive income |
135,000,000
USD
|
-
USD
|
176,000,000
USD
|
-
USD
|
-
USD
|
68,000,000
USD
|
135,000,000
USD
|
27,000,000
USD
|
-
USD
|
108,000,000
USD
|
-
USD
|
-
USD
|
-
USD
|
2,000,000
USD
|
-
USD
|
12,000,000
USD
|
88,000,000
USD
|
88,000,000
USD
|
7,000,000
USD
|
-
USD
|
81,000,000
USD
|
71,000,000
USD
|
| Comprehensive income |
4,246,000,000
USD
|
-
USD
|
176,000,000
USD
|
-
USD
|
-
USD
|
4,486,000,000
USD
|
4,246,000,000
USD
|
64,000,000
USD
|
-
USD
|
4,310,000,000
USD
|
-
USD
|
-
USD
|
-
USD
|
2,000,000
USD
|
-
USD
|
12,000,000
USD
|
703,000,000
USD
|
703,000,000
USD
|
69,000,000
USD
|
-
USD
|
772,000,000
USD
|
762,000,000
USD
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent |
4,310,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
772,000,000
USD
|
— | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests |
64,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
69,000,000
USD
|
— | — | — | — | — |