Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
542,000,000
USD
|
560,000,000
USD
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
135,000,000
USD
|
141,000,000
USD
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments accounted for using equity method |
1 093
USD
|
973,000,000
USD
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Other non-current assets |
25,000,000
USD
|
28,000,000
USD
|
— |
| Categories of non-current financial assets [abstract] | |||
| Non-current financial assets at fair value through profit or loss [abstract] | |||
| Non-current financial assets at fair value through profit or loss |
688,000,000
USD
|
801,000,000
USD
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
93,000,000
USD
|
84,000,000
USD
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
231,000,000
USD
|
269,000,000
USD
|
153,000,000
USD
|
| Miscellaneous current assets [abstract] | |||
| Current investments |
135,000,000
USD
|
124,000,000
USD
|
— |
| Other current assets |
287,000,000
USD
|
274,000,000
USD
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
203,000,000
USD
|
426,000,000
USD
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
270,000,000
USD
|
38,000,000
USD
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Current payables on social security and taxes other than income tax |
13,000,000
USD
|
14,000,000
USD
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current net defined benefit liability |
26,000,000
USD
|
25,000,000
USD
|
— |
| Other non-current liabilities |
17,000,000
USD
|
23,000,000
USD
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Other current liabilities |
495,000,000
USD
|
478,000,000
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
3 448
USD
|
3 488
USD
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
746,000,000
USD
|
751,000,000
USD
|
— |
| Current liabilities |
821,000,000
USD
|
576,000,000
USD
|
— |
| Assets less current liabilities [abstract] |