Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
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As at 2023-03-31 |
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| Disclosure of fair value measurement [text block] | — |
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| 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 |
34 586
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
33 253
EUR
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 |
10 577
EUR
|
— |
113,000,000
EUR
|
5 870
EUR
|
268,000,000
EUR
|
3 231
EUR
|
10 464
EUR
|
-
EUR
|
750,000,000
EUR
|
870,000,000
EUR
|
524,000,000
EUR
|
8 672
EUR
|
106,000,000
EUR
|
5 486
EUR
|
2 690
EUR
|
-
EUR
|
272,000,000
EUR
|
8 778
EUR
|
3,000,000
EUR
|
741,000,000
EUR
|
520,000,000
EUR
|
8 997
EUR
|
406,000,000
EUR
|
9 102
EUR
|
2 663
EUR
|
5 445
EUR
|
-
EUR
|
1 134
EUR
|
1,000,000
EUR
|
105,000,000
EUR
|
650,000,000
EUR
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |