XML 177 R154.htm IDEA: XBRL DOCUMENT
v3.23.1

Acquisition of ACT Group - Summary of Acquisition Date Fair Value of Each Major Class of Consideration Transferred (Parenthetical) (Details) | Dec. 31, 2022 shares
--- | ---
ACT Genomics Holdings Company Limited [Member] |
Disclosure of detailed information about business combination [line items] |
Ordinary shares issued or issuable | (19,891,910)

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

X
- Definition The number of instruments or interests issued or issuable at acquisition date for equity interests of the acquirer transferred as consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2022-03-24 -Paragraph B64 -Subparagraph f -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2022-en-r&anchor=para_B64_f_iv&doctype=Appendix&subtype=B -URIDate 2022-03-24 + Details
Name: | ifrs-full_NumberOfInstrumentsOrInterestsIssuedOrIssuable
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=pre_ActGenomicsHoldingsCompanyLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |