Statement Of Changes In Equity [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 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 changes in equity [abstract] | |||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||
| Equity |
1 336,4
USD
|
4,045,000,000
USD
|
3,211,000,000
USD
|
— | — |
1 419,3
USD
|
1 419,3
USD
|
5,000,000
USD
|
— | — | — | — |
1 324,1
USD
|
3,237,000,000
USD
|
1 769,1
USD
|
5,000,000
USD
|
— |
7,692,000,000
USD
|
— | — |
1 769,1
USD
|
— |
1 598,8
USD
|
4,957,000,000
USD
|
3,260,000,000
USD
|
1 429,6
USD
|
5,000,000
USD
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — |
4,938,000,000
USD
|
— | — | — | — |
4,938,000,000
USD
|
4,938,000,000
USD
|
3,842,000,000
USD
|
— | — | — | — |
3,842,000,000
USD
|
— | — | — | — |
3,842,000,000
USD
|
— | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — |
3,647,000,000
USD
|
— |
2,735,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — | — | — |
3,647,000,000
USD
|
8,585,000,000
USD
|
— | — | — | — |
8,585,000,000
USD
|
4,938,000,000
USD
|
1,107,000,000
USD
|
— | — | — | — |
3,842,000,000
USD
|
— |
2,735,000,000
USD
|
— | — |
1,107,000,000
USD
|
— | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — |
5,118,000,000
USD
|
— | — | — | — | — |
5,118,000,000
USD
|
— | — | — | — | — |
2,841,000,000
USD
|
— | — | — | — |
2,841,000,000
USD
|
— | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — |
64,000,000
USD
|
— | — | — |
64,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
73,000,000
USD
|
— |
73,000,000
USD
|
— | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — |
90,000,000
USD
|
— | — | — |
90,000,000
USD
|
— | — | — | — | — | — | — | — | — | — |
96,000,000
USD
|
— |
96,000,000
USD
|
— | — | — | — | — |