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Significant Accounting Judgments and Estimates - Additional Information (Detail) € in Millions | Mar. 31, 2026 EUR (€)
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Disclosure of changes in accounting estimates [line items] |
Deferred tax assets recognized | € 690.4

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- Definition Tax effect from deferred tax asset recognized. + References No definition available. + Details
Name: | asnd_TaxEffectFromDeferredTaxAssetRecognized
Namespace Prefix: | asnd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfChangesInAccountingEstimatesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration