XML 160 R148.htm IDEA: XBRL DOCUMENT v3.23.1

Financial instruments-Fair values and risk management - Credit risk (Details) - customer	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of major customers [line items]
Percentage of total trade receivables	56.00%	46.00%
Overall expected loss rate	0.13%	0.80%
Largest customer
Disclosure of major customers [line items]
Percentage of total trade receivables	73.00%	69.00%
Five largest customers
Disclosure of major customers [line items]
Number of largest customers	5

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

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X

- Definition

The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-IssueDate 2022-03-24
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-URIDate 2022-03-24

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Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of customers.

+ References

No definition available.

+ Details

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Namespace Prefix:	pre_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of the entity's trade receivables.

+ References

No definition available.

+ Details

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

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: