Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
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As at 2021-03-31 |
As at 2020-04-01 |
As at 2020-04-01 |
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As at 2020-04-01 |
As at 2020-04-01 |
As at 2020-04-01 |
As at 2020-04-01 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2019-04-01 |
As at 2019-04-01 |
As at 2019-04-01 |
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As at 2019-04-01 |
As at 2019-04-01 |
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| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 |
19,207,000,000
USD
|
17,978,000,000
USD
|
3,119,000,000
USD
|
96,000,000
USD
|
1,756,000,000
USD
|
38,000,000
USD
|
3,081,000,000
USD
|
1,574,000,000
USD
|
96,000,000
USD
|
18,221,000,000
USD
|
6,000,000
USD
|
2,275,000,000
USD
|
18,826,000,000
USD
|
2,281,000,000
USD
|
6,000,000
USD
|
2,275,000,000
USD
|
18,221,000,000
USD
|
2,281,000,000
USD
|
1,574,000,000
USD
|
96,000,000
USD
|
18,826,000,000
USD
|
96,000,000
USD
|
18,718,000,000
USD
|
1,559,000,000
USD
|
2,480,000,000
USD
|
17,893,000,000
USD
|
14,000,000
USD
|
2,494,000,000
USD
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |