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Segment Information - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2024 Segment
Disclosure of operating segments [line items] |
Number of reportable segment | 1

X
- Definition Number of reportable operating segments. + References No definition available. + Details
Name: | asnd_NumberOfReportableOperatingSegments
Namespace Prefix: | asnd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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_DisclosureOfOperatingSegmentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration