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Equity (Details) - Schedule of Composition of Share Capital (Parentheticals) | Dec. 31, 2022 ₪ / shares
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Schedule of Composition of Share Capital [Abstract] |
Authorized No. of shares, Ordinary Shares, par value | ₪ 0.01
Issued and paid-up No. of shares, Ordinary Shares, par value | ₪ 0.01

X
- Definition The nominal value per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 79 -Subparagraph a -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_79_a_iii&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_ParValuePerShare
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The nominal value per share. + References No definition available. + Details
Name: | synx_IssuedAndPaidUpOrdinarySharesParValue
Namespace Prefix: | synx_
Data Type: | dtr:perShareItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | synx_ScheduleOfCompositionOfShareCapitalAbstract
Namespace Prefix: | synx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration