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v3.23.1

Income tax expense/(credit) - Deferred tax assets not recognized (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income tax expense/(credit) |  |  |
Tax Losses Utilized | $ 62,586,553 | $ 0 | $ 3,050,828

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

X
- Definition The amount of tax losses utilized. + References No definition available. + Details
Name: | pre_TaxLossesUtilized
Namespace Prefix: | pre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration