Statement Of Changes In Equity [Abstract]
| Concept |
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 |
2021-01-01 to 2021-12-31 |
As at 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 |
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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 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 |
2020-01-01 to 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 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||
| Equity |
616,600,000
USD
|
— | — |
8,900,000
USD
|
345,000,000
USD
|
— |
–
USD
|
— |
513,800,000
USD
|
— |
253,400,000
USD
|
2 0 .1
USD
|
— | — | — |
57 .5
USD
|
11,600,000
USD
|
2 0 .1
USD
|
14,400,000
USD
|
— | — | — |
24 7 .3
USD
|
513,800,000
USD
|
226,300,000
USD
|
— | — | — |
250 .8
USD
|
516,000,000
USD
|
2,937 .7
USD
|
14,400,000
USD
|
2,645,200,000
USD
|
21,600,000
USD
|
2 0 .1
USD
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
–
USD
|
–
USD
|
— | — |
–
USD
|
— |
–
USD
|
— |
–
USD
|
— | — |
565,800,000
USD
|
565,800,000
USD
|
2,651,500,000
USD
|
— | — | — | — |
–
USD
|
2,651,500,000
USD
|
–
USD
|
— | — | — |
–
USD
|
–
USD
|
–
USD
|
— | — | — | — | — | — | — |
| Comprehensive income | — | — | — | — | — | — | — | — | — | — | — | — |
12,400,000
USD
|
— |
6,600,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
51,400,000
USD
|
— | — | — | — |
–
USD
|
51,400,000
USD
|
–
USD
|
— | — | — |
–
USD
|
–
USD
|
–
USD
|
— | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
–
USD
|
–
USD
|
— | — |
–
USD
|
— |
–
USD
|
— |
–
USD
|
— | — |
6,900,000
USD
|
6,900,000
USD
|
1,900,000
USD
|
— | — | — | — |
–
USD
|
1,900,000
USD
|
–
USD
|
— | — | — |
–
USD
|
–
USD
|
–
USD
|
— | — | — | — | — | — | — |