Statement Of Changes In Equity [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||
| Equity | — |
36,300,000
USD
|
0
USD
|
— | — |
490,300,000
USD
|
— |
29,100,000
USD
|
497,500,000
USD
|
— | — | — |
9,100,000
USD
|
18,800,000
USD
|
— |
31,400,000
USD
|
1,007,800,000
USD
|
— |
948,500,000
USD
|
— |
59,400,000
USD
|
32,200,000
USD
|
2,400,000
USD
|
20,600,000
USD
|
9,000,000
USD
|
| Changes in equity [abstract] | |||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||
| Profit (loss) |
0
USD
|
— | — |
927,900,000
USD
|
0
USD
|
— |
0
USD
|
— | — |
927,900,000
USD
|
950,100,000
USD
|
950,100,000
USD
|
— | — |
0
USD
|
— | — |
0
USD
|
— |
0
USD
|
— | — | — | — | — |
| Other comprehensive income |
0
USD
|
— | — |
100,000
USD
|
2,300,000
USD
|
— |
0
USD
|
— | — |
2,400,000
USD
|
900,000
USD
|
100,000
USD
|
— | — |
0
USD
|
— | — |
0
USD
|
— |
800,000
USD
|
— | — | — | — | — |
| Comprehensive income |
0
USD
|
— | — |
927,800,000
USD
|
2,300,000
USD
|
— |
0
USD
|
— | — |
925,500,000
USD
|
951,000,000
USD
|
950,200,000
USD
|
— | — |
0
USD
|
— | — |
0
USD
|
— |
800,000
USD
|
— | — | — | — | — |