Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||
| Profit (loss) |
20,000,000
USD
|
— |
72,000,000
USD
|
53,000,000
USD
|
72,000,000
USD
|
117,000,000
USD
|
— |
178,000,000
USD
|
61,000,000
USD
|
117,000,000
USD
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||
| Adjustments for decrease (increase) in inventories | — | — | — |
13,000,000
USD
|
— | — | — |
1,000,000
USD
|
— | — | — |
| Adjustments for fair value losses (gains) | — | — | — |
107,000,000
USD
|
— | — | — |
192,000,000
USD
|
— | — | — |
| Adjustments for losses (gains) on disposal of non-current assets | — | — | — |
2,000,000
USD
|
— | — | — |
5,000,000
USD
|
— | — | — |
| 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
|