Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2020-12-31 |
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As at 2020-01-01 |
As at 2019-12-31 |
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As at 2019-12-31 |
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As at 2018-12-31 |
As at 2018-12-31 |
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| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [abstract] | |||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of assets [line items] | |||||||||||||||||||||||||||||||
| Assets | — | — | — | — | — | — | — |
3 377,5
USD
|
— | — | — | — | — | — |
4 012,6
USD
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [abstract] | |||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of equity [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of equity [abstract] | |||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of equity [line items] | |||||||||||||||||||||||||||||||
| Equity |
4,806,000,000
USD
|
449,000,000
USD
|
7,000,000
USD
|
1 687,1
USD
|
1 119,7
USD
|
87,000,000
USD
|
201,000,000
USD
|
1 164,6
USD
|
373,000,000
USD
|
374,000,000
USD
|
1 531,1
USD
|
1 561,7
USD
|
457,000,000
USD
|
3 184,7
USD
|
1 607,4
USD
|
1 531,1
USD
|
201,000,000
USD
|
7,000,000
USD
|
87,000,000
USD
|
563,000,000
USD
|
235,000,000
USD
|
426,000,000
USD
|
551,000,000
USD
|
279,000,000
USD
|
201,000,000
USD
|
1 631,5
USD
|
1 674,1
USD
|
3 184,6
USD
|
9,000,000
USD
|
87,000,000
USD
|
1 457,8
USD
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |