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Capital Structure and Financial Matters - Loss of subscribed share capital (Details) | Dec. 31, 2018
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Capital Structure and Financial Matters |
Minimum percentage of lost subscribed share capital | 50.00%

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- Definition Minimum percentage of lost subscribed share capital + References No definition available. + Details
Name: | evax_MinimumPercentageOfLostSubscribedShareCapital
Namespace Prefix: | evax_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | ifrs-full_DisclosureOfClassesOfShareCapitalAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration