Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Oil and gas assets |
2,448,000,000
USD
|
2,461,000,000
USD
|
— |
| Other property, plant and equipment |
4,000,000
USD
|
8,000,000
USD
|
— |
| Trade and other current receivables [abstract] | |||
| Current prepayments and current accrued income other than current contract assets [abstract] | |||
| Current prepayments [abstract] | |||
| Current prepaid expenses |
2,000,000
USD
|
7,000,000
USD
|
— |
| Trade and other current receivables |
199,000,000
USD
|
269,000,000
USD
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
258,000,000
USD
|
415,000,000
USD
|
686,000,000
USD
|
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
192,000,000
USD
|
196,000,000
USD
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Other non-current liabilities |
1,000,000
USD
|
4,000,000
USD
|
— |
| Issued capital [abstract] | |||
| Issued capital |
8,000,000
USD
|
8,000,000
USD
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
1,792,000,000
USD
|
2,137,000,000
USD
|
— |
| Miscellaneous equity [abstract] | |||
| Additional paid-in capital |
780,000,000
USD
|
763,000,000
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
2,911,000,000
USD
|
3,160,000,000
USD
|
— |
| Liabilities |
329,000,000
USD
|
308,000,000
USD
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
459,000,000
USD
|
691,000,000
USD
|
— |
| Current liabilities |
192,000,000
USD
|
196,000,000
USD
|
— |
| Assets less current liabilities [abstract] |