XML 147 R135.htm IDEA: XBRL DOCUMENT v3.23.1

Equity settled share-based transactions - Granted under the Option Schemes (Details) - Share options	12 Months Ended
	Dec. 31, 2022 yr $ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Options exercisable period | yr	7
First anniversary
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price, share options granted | $ / shares	$ 0.01
Vesting percentage	33.33%
Twenty three months
Disclosure of terms and conditions of share-based payment arrangement [line items]
Monthly vesting percentage	2.77%
Third anniversary
Disclosure of terms and conditions of share-based payment arrangement [line items]
Monthly vesting percentage	2.96%

X

- Definition

The option life of share options granted.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 47
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_DescriptionOfOptionLifeShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

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

X

- Definition

The exercise price of share options granted.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 47
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_ExercisePriceShareOptionsGranted2019
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of vesting on monthly of award under share-based payment arrangement.

+ References

No definition available.

+ Details

Name:	pre_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsMonthlyVestingPercentage
Namespace Prefix:	pre_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of vesting of award under share-based payment arrangement.

+ References

No definition available.

+ Details

Name:	pre_IfrsShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsPercentage
Namespace Prefix:	pre_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=pre_ShareOptionSchemesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pre_IfrsVestingAxis=pre_IfrsShareBasedPaymentArrangementTrancheOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pre_IfrsVestingAxis=pre_IfrsShareBasedPaymentArrangementTrancheTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	pre_IfrsVestingAxis=pre_IfrsShareBasedPaymentArrangementTrancheThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: