Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2020-12-31 |
As at 2020-01-01 |
As at 2019-12-31 |
As at 2019-01-01 |
As at 2018-12-31 |
As at 2018-01-01 |
|---|---|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||||
| Property, plant and equipment [abstract] | ||||||
| Property, plant and equipment |
5,659,000,000
USD
|
— |
6,039,000,000
USD
|
— |
4,798,000,000
USD
|
— |
| Intangible assets and goodwill [abstract] | ||||||
| Intangible assets other than goodwill [abstract] | ||||||
| Intangible assets other than goodwill |
159,000,000
USD
|
— |
162,000,000
USD
|
— |
165,000,000
USD
|
— |
| Goodwill |
212,000,000
USD
|
— |
248,000,000
USD
|
— |
224,000,000
USD
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||||||
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements |
131,000,000
USD
|
— |
223,000,000
USD
|
— |
159,000,000
USD
|
— |
| Miscellaneous non-current assets [abstract] | ||||||
| Non-current investments other than investments accounted for using equity method |
7,000,000
USD
|
— |
5,000,000
USD
|
— |
85,000,000
USD
|
— |
| Other non-current assets |
5,000,000
USD
|
— |
11,000,000
USD
|
— |
11,000,000
USD
|
— |
| Trade and other current receivables [abstract] | ||||||
| Trade and other current receivables |
1,148,000,000
USD
|
— |
1,047,000,000
USD
|
— |
1,326,000,000
USD
|
— |
| Classes of current inventories [abstract] | ||||||
| Current inventories |
1,373,000,000
USD
|
— |
1,634,000,000
USD
|
— |
1,816,000,000
USD
|
— |
| Classes of current inventories, alternative [abstract] | ||||||
| Cash and cash equivalents [abstract] | ||||||
| Cash and cash equivalents |
842,000,000
USD
|
713,000,000
USD
|
713,000,000
USD
|
1,179,000,000
USD
|
1,179,000,000
USD
|
301,000,000
USD
|
| Miscellaneous current assets [abstract] | ||||||
| Current investments |
191,000,000
USD
|
— |
287,000,000
USD
|
— |
19,000,000
USD
|
— |
| Other current assets |
16,000,000
USD
|
— |
14,000,000
USD
|
— |
10,000,000
USD
|
— |
| Borrowings [abstract] | ||||||
| Non-current portion of non-current borrowings |
2,432,000,000
USD
|
— |
2,188,000,000
USD
|
— |
1,677,000,000
USD
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | ||||||
| Current borrowings and current portion of non-current borrowings |
1,054,000,000
USD
|
— |
468,000,000
USD
|
— |
398,000,000
USD
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | ||||||
| Current borrowings and current portion of non-current borrowings, by type [abstract] | ||||||
| Trade and other current payables [abstract] | ||||||
| Trade and other current payables |
1,065,000,000
USD
|
— |
1,124,000,000
USD
|
— |
1,122,000,000
USD
|
— |
| Miscellaneous non-current liabilities [abstract] | ||||||
| Other non-current liabilities |
48,000,000
USD
|
— |
2,000,000
USD
|
— |
14,000,000
USD
|
— |
| Miscellaneous current liabilities [abstract] | ||||||
| Current dividend payables |
109,000,000
USD
|
— |
318,000,000
USD
|
— |
525,000,000
USD
|
— |
| Issued capital [abstract] | ||||||
| Issued capital |
221,000,000
USD
|
— |
221,000,000
USD
|
— |
221,000,000
USD
|
— |
| Retained earnings [abstract] | ||||||
| Retained earnings |
11,641,000,000
USD
|
— |
11,840,000,000
USD
|
— |
12,370,000,000
USD
|
— |
| Accumulated other comprehensive income [abstract] | ||||||
| Accumulated other comprehensive income |
7,140,000,000
USD
|
— |
6,140,000,000
USD
|
— |
6,782,000,000
USD
|
— |
| Miscellaneous equity [abstract] | ||||||
| Additional paid-in capital |
8,000,000
USD
|
— |
9,000,000
USD
|
— |
10,000,000
USD
|
— |
| Net assets (liabilities) [abstract] | ||||||
| Assets |
9,862,000,000
USD
|
— |
10,484,000,000
USD
|
— |
9,944,000,000
USD
|
— |
| Liabilities |
5,121,000,000
USD
|
— |
4,537,000,000
USD
|
— |
4,110,000,000
USD
|
— |
| Net current assets (liabilities) [abstract] | ||||||
| Current assets |
3,570,000,000
USD
|
— |
3,695,000,000
USD
|
— |
4,350,000,000
USD
|
— |
| Current liabilities |
2,282,000,000
USD
|
— |
1,942,000,000
USD
|
— |
2,073,000,000
USD
|
— |
| Assets less current liabilities [abstract] |