Statement Of Changes In Net Assets Available For Benefits [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|
| Statement of changes in net assets available for benefits [abstract] | ||
| Reconciliation of changes in net assets available for benefits [abstract] | ||
| Changes in net assets available for benefits [abstract] | ||
| Investment income |
51. 2
USD
|
19 7. 5
USD
|
| Other income |
56,800,000
USD
|
5 0.2
USD
|
| Tax expense (income) |
1. 3
USD
|
25. 2
USD
|