Statement Of Changes In Equity [Abstract]
| Concept |
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 |
As at 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 |
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 |
As at 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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
2019-01-01 to 2019-12-31 |
2019-01-01 to 2019-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
As at 2018-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
153,026,000,000
USD
|
610,000,000
USD
|
18,909,000,000
USD
|
— | — | — |
175,326,000,000
USD
|
171,966,000,000
USD
|
3,360,000,000
USD
|
641,000,000
USD
|
— | — | — |
142,616,000,000
USD
|
3,227,000,000
USD
|
155,310,000,000
USD
|
651,000,000
USD
|
709,000,000
USD
|
12,752,000,000
USD
|
— | — |
158,537,000,000
USD
|
— | — | — |
186,476,000,000
USD
|
— |
3,987,000,000
USD
|
— | — |
190,463,000,000
USD
|
172,431,000,000
USD
|
— |
657,000,000
USD
|
1,063,000,000
USD
|
14,451,000,000
USD
|
— | — |
3,888,000,000
USD
|
198,650,000,000
USD
|
202,538,000,000
USD
|
685,000,000
USD
|
1,260,000,000
USD
|
182,610,000,000
USD
|
16,615,000,000
USD
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — |
20,630,000,000
USD
|
— |
21,534,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
16,432,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Other comprehensive income | — | — | — | — | — | — | — | — | — | — | — |
6,073,000,000
USD
|
— |
1,842,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,034,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — | — | — | — | — | — | — | — | — | — | — |
26,703,000,000
USD
|
— |
23,376,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
14,398,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
348,000,000
USD
|
— | — | — | — | — |
6,321,000,000
USD
|
— | — | — | — |
6,669,000,000
USD
|
6,321,000,000
USD
|
7,581,000,000
USD
|
— | — | — | — | — | — |
7,270,000,000
USD
|
— | — | — |
311,000,000
USD
|
7,270,000,000
USD
|
— |
15,198,000,000
USD
|
— |
15,198,000,000
USD
|
537,000,000
USD
|
— | — |
15,735,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity |
13,000,000
USD
|
— | — | — | — | — |
5,000,000
USD
|
— | — | — | — |
18,000,000
USD
|
5,000,000
USD
|
19,000,000
USD
|
— | — | — | — | — | — |
566,000,000
USD
|
— | — | — |
585,000,000
USD
|
566,000,000
USD
|
— |
2,000,000
USD
|
— |
2,000,000
USD
|
11,000,000
USD
|
— | — |
13,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — |
58,000,000
USD
|
99,000,000
USD
|
250,000,000
USD
|
— | — | — | — |
250,000,000
USD
|
93,000,000
USD
|
19,000,000
USD
|
— | — | — | — | — | — |
230,000,000
USD
|
143,000,000
USD
|
— |
354,000,000
USD
|
— |
19,000,000
USD
|
— |
465,000,000
USD
|
— |
613,000,000
USD
|
— | — | — |
465,000,000
USD
|
— | — | — |
197,000,000
USD
|
49,000,000
USD
|
— | — | — | — | — | — | — |