Statement Of Cash Flows [Abstract]
| Concept |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Cash flows from (used in) operating activities | — |
122,000,000
USD
|
— |
194,000,000
USD
|
— |
| Cash flows from (used in) investing activities [abstract] | |||||
| Interest received, classified as investing activities | — |
1,000,000
USD
|
— |
1,000,000
USD
|
— |
| Other inflows (outflows) of cash, classified as investing activities | — |
6,000,000
USD
|
— | — | — |
| Cash flows from (used in) investing activities | — |
53,000,000
USD
|
— |
41,000,000
USD
|
— |
| Cash flows from (used in) financing activities [abstract] | |||||
| Repayments of borrowings, classified as financing activities | — |
71,000,000
USD
|
— |
60,000,000
USD
|
— |
| Payments of lease liabilities, classified as financing activities | — |
30,000,000
USD
|
— |
18,000,000
USD
|
— |
| Cash flows from (used in) financing activities | — |
106,000,000
USD
|
— |
119,000,000
USD
|
— |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
37,000,000
USD
|
— |
115,000,000
USD
|
— |
| Cash and cash equivalents |
231,000,000
USD
|
— |
269,000,000
USD
|
— |
153,000,000
USD
|