Disclosure Of Fair Value Measurement [Text Block]
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As at 2022-03-31 |
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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 | — | — | — | — | — | — |
9,861,000,000
USD
|
— | — | — | — |
11,166,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [abstract] | ||||||||||||||||||||||||
| Disclosure of fair value measurement of liabilities [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of liabilities [abstract] | ||||||||||||||||||||||||
| Disclosure of fair value measurement of liabilities [line items] | ||||||||||||||||||||||||
| Liabilities | — | — | — | — | — | — |
7,561,000,000
USD
|
— | — | — | — |
7,358,000,000
USD
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, liabilities [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 |
285,000,000
USD
|
838,000,000
USD
|
2,160,000,000
USD
|
5,056,000,000
USD
|
140,000,000
USD
|
1,875,000,000
USD
|
2,300,000,000
USD
|
3,933,000,000
USD
|
2,758,000,000
USD
|
215,000,000
USD
|
3,635,000,000
USD
|
3,808,000,000
USD
|
3,420,000,000
USD
|
173,000,000
USD
|
3,902,000,000
USD
|
929,000,000
USD
|
2,412,000,000
USD
|
82,000,000
USD
|
942,000,000
USD
|
3,502,000,000
USD
|
3,420,000,000
USD
|
3,436,000,000
USD
|
3,649,000,000
USD
|
147,000,000
USD
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |