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Short-term deposits and cash and cash equivalents - Narrative (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Cash and cash equivalents [abstract]
Short term deposits weighted average interest rate point in time		5.15%
Short-term deposits	$ 0	$ 0

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- References

No definition available.

+ Details

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

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- Definition

The amount of short-term deposits held by the entity that are not classified as cash equivalents. [Refer: Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Definition

Short Term Deposits Weighted Average Interest Rate Point In Time

+ References

No definition available.

+ Details

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Namespace Prefix:	pre_
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Balance Type:	na
Period Type:	instant