Statement Of Cash Flows [Abstract]
| Concept |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-01-01 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-01-01 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2019-01-01 |
|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||
| Cash flows from (used in) operating activities | — |
3,424,000,000
USD
|
— | — |
1,928,000,000
USD
|
— |
2,430,000,000
USD
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||
| Other cash payments to acquire interests in joint ventures, classified as investing activities | — |
10,000,000
USD
|
— | — | — | — |
3,000,000
USD
|
— | — |
| Proceeds from government grants, classified as investing activities | — |
53,000,000
USD
|
— | — |
20,000,000
USD
|
— |
5,000,000
USD
|
— | — |
| Cash advances and loans made to other parties, classified as investing activities | — |
1,000,000
USD
|
— | — |
1,000,000
USD
|
— |
9,000,000
USD
|
— | — |
| Cash receipts from repayment of advances and loans made to other parties, classified as investing activities | — | — | — | — |
1,000,000
USD
|
— |
2,000,000
USD
|
— | — |
| Dividends received, classified as investing activities | — |
3,000,000
USD
|
— | — |
1,000,000
USD
|
— |
9,000,000
USD
|
— | — |
| Other inflows (outflows) of cash, classified as investing activities | — |
2,000,000
USD
|
— | — |
2,000,000
USD
|
— |
19,000,000
USD
|
— | — |
| Cash flows from (used in) investing activities | — |
905,000,000
USD
|
— | — |
624,000,000
USD
|
— |
665,000,000
USD
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||
| Payments from changes in ownership interests in subsidiaries that do not result in loss of control | — |
38,000,000
USD
|
— | — |
66,000,000
USD
|
— |
71,000,000
USD
|
— | — |
| Proceeds from borrowings, classified as financing activities | — |
2,325,000,000
USD
|
— | — |
1,218,000,000
USD
|
— |
2,805,000,000
USD
|
— | — |
| Repayments of borrowings, classified as financing activities | — |
3,403,000,000
USD
|
— | — |
1,304,000,000
USD
|
— |
3,035,000,000
USD
|
— | — |
| Payments of lease liabilities, classified as financing activities | — |
33,000,000
USD
|
— | — |
33,000,000
USD
|
— |
37,000,000
USD
|
— | — |
| Other inflows (outflows) of cash, classified as financing activities | — | — | — | — | — | — |
1,000,000
USD
|
— | — |
| Cash flows from (used in) financing activities | — |
2,707,000,000
USD
|
— | — |
1,107,000,000
USD
|
— |
1,415,000,000
USD
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||
| Effect of exchange rate changes on cash and cash equivalents | — |
12,000,000
USD
|
— | — |
7,000,000
USD
|
— |
6,000,000
USD
|
— | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
200,000,000
USD
|
— | — |
204,000,000
USD
|
— |
356,000,000
USD
|
— | — |
| Cash and cash equivalents |
1,027,000,000
USD
|
— |
1,627,000,000
USD
|
1,627,000,000
USD
|
— |
1,423,000,000
USD
|
— |
1,423,000,000
USD
|
1,067,000,000
USD
|