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

- References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2025-01-01
-Paragraph 51
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_51_a&doctype=Standard
-URIDate 2025-03-27

Name:	ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Exercise Price Of Outstanding Share Options And Other Equity Instruments In Share-Based Payment Arrangement

No definition available.

Name:	sqns_ExercisePriceOfOutstandingShareOptionsAndOtherEquityInstrumentsInShareBasedPaymentArrangement
Namespace Prefix:	sqns_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Selling Price Multiple, Share Options And Other Equity Instruments Granted

No definition available.

Name:	sqns_SellingPriceMultipleShareOptionsAndOtherEquityInstrumentsGranted
Namespace Prefix:	sqns_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Selling Price Multiple, Share Options And Other Equity Instruments Granted, Option 1

No definition available.

Name:	sqns_SellingPriceMultipleShareOptionsAndOtherEquityInstrumentsGrantedOption1
Namespace Prefix:	sqns_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period 2

No definition available.

Name:	sqns_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod2
Namespace Prefix:	sqns_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Share-Based Compensation Arrangement By Share-Based Payment Award, Change In Compensation Cost, Percentage

No definition available.

Name:	sqns_ShareBasedCompensationArrangementByShareBasedPaymentAwardChangeInCompensationCostPercentage
Namespace Prefix:	sqns_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Weighted Average Fair Value At Measurement Date, Share Options And Other Equity Instruments Granted

No definition available.

Name:	sqns_WeightedAverageFairValueAtMeasurementDateShareOptionsAndOtherEquityInstrumentsGranted
Namespace Prefix:	sqns_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Weighted Average Remaining Contractual Life Of Outstanding Share Options And Other Equity Instruments In Share-Based Payment Arrangement

No definition available.

Name:	sqns_WeightedAverageRemainingContractualLifeOfOutstandingShareOptionsAndOtherEquityInstrumentsInShareBasedPaymentArrangement
Namespace Prefix:	sqns_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Weighted Average Share Price of Share Options And Other Equity Instruments In Share-Based Payment Arrangement, Change As Percentage

No definition available.

Name:	sqns_WeightedAverageSharePriceofShareOptionsAndOtherEquityInstrumentsInShareBasedPaymentArrangementChangeAsPercentage
Namespace Prefix:	sqns_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=sqns_Warrant1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	sqns_TitleOfIndividual1Axis=sqns_ConsultantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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