Statement Of Changes In Equity [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 |
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 changes in equity [abstract] | ||||||||||
| Statement of changes in equity [line items] | ||||||||||
| Increase (decrease) through transactions with owners, equity |
–
USD
|
–
USD
|
–
USD
|
163,000,000
USD
|
163,000,000
USD
|
256,000,000
USD
|
–
USD
|
256,000,000
USD
|
–
USD
|
–
USD
|
| Purchase of treasury shares |
–
USD
|
–
USD
|
–
USD
|
10,000,000
USD
|
10,000,000
USD
|
83,000,000
USD
|
–
USD
|
83,000,000
USD
|
–
USD
|
–
USD
|
| Reduction of issued capital |
–
USD
|
–
USD
|
–
USD
|
77,000,000
USD
|
77,000,000
USD
|
106,000,000
USD
|
–
USD
|
106,000,000
USD
|
–
USD
|
–
USD
|