XML 202 R125.htm IDEA: XBRL DOCUMENT
v3.26.1

Interests in equity-accounted investees - Summary of interests in associates and joint ventures (Details) - shares | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Direct beneficial interest (%) | Insighta |  |
Disclosure of associates [line items] |  |
Proportion of nominal value of issue capital held by the Company (%) |  | 35.00%
Proportion of voting rights held in associate (%) |  | 35.00%
Indirect beneficial interest (%) | Insighta |  |
Disclosure of associates [line items] |  |
Proportion of nominal value of issue capital held by the Company (%) |  | 0.00%
Proportion of voting rights held in associate (%) |  | 0.00%
Insighta |  |
Disclosure of associates [line items] |  |
Number of shares issued (in shares) | 2,000,000 |
Proportion of nominal value of issue capital held by the Company (%) |  | 35.00%
Proportion of voting rights held in associate (%) |  | 35.00%
Insighta | Direct beneficial interest (%) |  |
Disclosure of associates [line items] |  |
Proportion of nominal value of issue capital held by the Company (%) | 35.00% |
Proportion of voting rights held in associate (%) | 35.00% |
Insighta | Indirect beneficial interest (%) |  |
Disclosure of associates [line items] |  |
Proportion of nominal value of issue capital held by the Company (%) | 0.00% |
Proportion of voting rights held in associate (%) | 0.00% |
CERBACT Asia Holdings Pte. Ltd. (“CERBACT”) |  |
Disclosure of associates [line items] |  |
Number of shares issued (in shares) | 100 |
CERBACT Asia Holdings Pte. Ltd. (“CERBACT”) | Direct beneficial interest (%) |  |
Disclosure of associates [line items] |  |
Proportion of nominal value of issue capital held by the Company (%) | 0.00% | 0.00%
Proportion of voting rights held in associate (%) | 0.00% | 0.00%
CERBACT Asia Holdings Pte. Ltd. (“CERBACT”) | Indirect beneficial interest (%) |  |
Disclosure of associates [line items] |  |
Proportion of nominal value of issue capital held by the Company (%) | 0.00% | 26.04%
Proportion of voting rights held in associate (%) | 0.00% | 26.04%

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

X
- Definition The proportion of the voting rights in an associate held by the entity. [Refer: Total for all associates [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2025-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2025-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2025-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2025-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_ProportionOfVotingPowerHeldInAssociate
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares in the entity held by the entity or by its subsidiaries or associates. [Refer: Total for all associates [member]; Total for all subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 160 -Subparagraph a -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_160_a_vi&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph B10 -Subparagraph a -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B10_a_vi&doctype=Appendix&subtype=B -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 79 -Subparagraph a -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_79_a_vi&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_SharesInEntityHeldByEntityOrByItsSubsidiariesOrAssociates
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | pre_BeneficialInterestHeldAxis=pre_DirectBeneficialInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointVenturesAxis=pre_InsightaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pre_BeneficialInterestHeldAxis=pre_IndirectBeneficialInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=pre_InsightaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=pre_CerbactAsiaHoldingsPte.LtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |