Statement Of Changes In Equity [Abstract]
| Concept |
As at 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 |
As at 2021-12-31 |
As at 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 |
As at 2020-12-31 |
As at 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 |
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 |
1,336,400,000
USD
|
404,500,000
USD
|
321,100,000
USD
|
— | — |
1,419,300,000
USD
|
1,419,300,000
USD
|
500,000
USD
|
— | — | — | — |
1,324,100,000
USD
|
323,700,000
USD
|
1,769,100,000
USD
|
500,000
USD
|
— |
769,200,000
USD
|
— | — |
1,769,100,000
USD
|
— |
1,598,800,000
USD
|
495,700,000
USD
|
326,000,000
USD
|
1,429,600,000
USD
|
500,000
USD
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — |
493,800,000
USD
|
— | — | — | — |
493,800,000
USD
|
493,800,000
USD
|
384,200,000
USD
|
— | — | — | — |
384,200,000
USD
|
— | — | — | — |
384,200,000
USD
|
— | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — |
364,700,000
USD
|
— |
273,500,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — | — | — |
364,700,000
USD
|
858,500,000
USD
|
— | — | — | — |
858,500,000
USD
|
493,800,000
USD
|
110,700,000
USD
|
— | — | — | — |
384,200,000
USD
|
— |
273,500,000
USD
|
— | — |
110,700,000
USD
|
— | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — |
511,800,000
USD
|
— | — | — | — | — |
511,800,000
USD
|
— | — | — | — | — |
284,100,000
USD
|
— | — | — | — |
284,100,000
USD
|
— | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — |
6,400,000
USD
|
— | — | — |
6,400,000
USD
|
— | — | — | — | — | — | — | — | — | — |
7,300,000
USD
|
— |
7,300,000
USD
|
— | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — |
9,000,000
USD
|
— | — | — |
9,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
9,600,000
USD
|
— |
9,600,000
USD
|
— | — | — | — | — |