Statement Of Changes In Equity [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||
| Purchase of treasury shares |
—
USD
|
—
USD
|
10,000,000
USD
|
10,000,000
USD
|
3,513,000,000
USD
|
3,513,000,000
USD
|
3,513,000,000
USD
|
1,214,000,000
USD
|
6,000,000
USD
|
6,000,000
USD
|
1,214,000,000
USD
|
1,214,000,000
USD
|
28,000,000
USD
|
10,286,000,000
USD
|
28,000,000
USD
|
10,286,000,000
USD
|
10,286,000,000
USD
|