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 |
2021-01-01 to 2021-12-31 |
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 disposal of subsidiary, equity |
400,000
USD
|
— | — | — |
400,000
USD
|
0
USD
|
0
USD
|
— |
| Purchase of treasury shares | — | — |
132,600,000
USD
|
— | — |
132,600,000
USD
|
400,000
USD
|
400,000
USD
|
| Sale or issue of treasury shares | — | — |
0
USD
|
— | — |
0
USD
|
100,000
USD
|
100,000
USD
|
| Cancellation of treasury shares | — |
201,900,000
USD
|
201,900,000
USD
|
100,000
USD
|
— |
0
USD
|
0
USD
|
— |