Statement Of Financial Position [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 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 financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Non-current assets |
2,060,000,000
USD
|
— | — | — | — |
2,156,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Trade and other current receivables |
92,000,000
USD
|
— | — | — | — |
91,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
686,000,000
USD
|
— | — | — | — |
554,000,000
USD
|
— | — | — | — | — | — |
756,000,000
USD
|
— | — |
| Current assets |
785,000,000
USD
|
— | — | — | — |
647,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Assets |
2,845,000,000
USD
|
— | — | — | — |
2,803,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
8,000,000
USD
|
— | — | — | — |
8,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Retained earnings |
1,792,000,000
USD
|
— | — | — | — |
1,788,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Other reserves |
3,000,000
USD
|
— | — | — | — |
18,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Equity |
2,566,000,000
USD
|
1,792,000,000
USD
|
3,000,000
USD
|
763,000,000
USD
|
8,000,000
USD
|
2,577,000,000
USD
|
8,000,000
USD
|
1,788,000,000
USD
|
763,000,000
USD
|
18,000,000
USD
|
2,011,000,000
USD
|
19,000,000
USD
|
2,763,000,000
USD
|
763,000,000
USD
|
8,000,000
USD
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||
| Non-current provisions |
128,000,000
USD
|
— | — | — | — |
125,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Non-current liabilities |
136,000,000
USD
|
— | — | — | — |
128,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current provisions [abstract] | |||||||||||||||
| Current provisions |
2,000,000
USD
|
— | — | — | — |
–
USD
|
— | — | — | — | — | — | — | — | — |
| Trade and other current payables |
141,000,000
USD
|
— | — | — | — |
98,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Current liabilities |
143,000,000
USD
|
— | — | — | — |
98,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Liabilities |
279,000,000
USD
|
— | — | — | — |
226,000,000
USD
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities |
2,845,000,000
USD
|
— | — | — | — |
2,803,000,000
USD
|
— | — | — | — | — | — | — | — | — |