Name:	ifrs-full_DisclosureOfBusinessCombinationsLineItems
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Data Type:	xbrli:stringItemType
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Period Type:	duration

The amount of any gain recognised in a business combination in which the net of the identifiable assets acquired and the liabilities assumed exceeds the aggregate of the consideration transferred, non-controlling interest in the acquiree and fair value of the acquirer's previously held equity interest in the acquiree. [Refer: Business combinations [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2023-01-01
-Paragraph B64
-Subparagraph n
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B64_n_i&doctype=Appendix&subtype=B
-URIDate 2023-03-23

Name:	ifrs-full_GainRecognisedInBargainPurchaseTransaction
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount recognised as of the acquisition date for additional litigation provisions.

No definition available.

Name:	ubs_AdditionalLitigationProvisionsRecognisedAsOfAcquisitionDate
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount recognised as of the acquisition date for additional provisions and contingent liabilities.

No definition available.

Name:	ubs_AdditionalProvisionsAndContingentLiabilitiesRecognisedAsOfAcqusitionDate
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of contingent liabilities for certain obligations in rspect of litigation recognised in a business combination.

No definition available.

Name:	ubs_ContingentLiabilitiesLitigationRecognisedInBusinessCombination
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of contingent liabilities for certain obligations in rspect of litigation recognised in a business combination as of acquisition date, before measurement period adjustments remeasurement made in the second quater of 2024.

No definition available.

Name:	ubs_ContingentLiabilitiesLitigationRecognisedInBusinessCombinationAsOfAcquisitionDateBeforeMeasurementPeriodAdjustment
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The effect of measurement period adjustments remeasurement on retained earnings.

No definition available.

Name:	ubs_EffectOfIFRS3MeasurementPeriodAdjustmentRetainedEarnings
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of existing provisions of acquiree as of acquisition date.

No definition available.

Name:	ubs_ExistingProvisionsOfAcquireeAsOfAcquisitionDate
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The fair value amount of derivative loan commitments transferred to another entity.

No definition available.

Name:	ubs_FairValueOfDerivativeLoanCommitmentsTransferred
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The fair value of senior secured asset-based financing transferred to another entity, funded as of certain date.

No definition available.

Name:	ubs_FairValueOfSeniorSecuredAssetBasedFinancingTransferredFunded
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of gains / (losses) recognized from investment agreement conclusion and the assignment of the loan facilities.

No definition available.

Name:	ubs_GainsLossesFromInvestmentAgreementConclusionAndAssignmentOfLoanFacilities
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of fair value measurement period adjustments remeasurement of acquisition date fair values.

No definition available.

Name:	ubs_IFRS3MeasurementPeriodAdjustmentRemeasurementOfAcquisitionDateFairValues
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

The amount of fair value measurement period adjustments remeasurement of contingent liabilities related to litigation.

No definition available.

Name:	ubs_IFRS3MeasurementPeriodAdjustmentRemeasurementOfContingentLiablitiesLitigation
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The notional amount of derivative loan commitments transferred to another entity.

No definition available.

Name:	ubs_NotionalOfDerivativeLoanCommitmentsTransferred
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of extended one-year swingline facility.

No definition available.

Name:	ubs_OneYearSwinglineFacilityExtended
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of senior secured asset-based financing transferred to another entity.

No definition available.

Name:	ubs_SeniorSecuredAssetBasedFinancingTransferred
Namespace Prefix:	ubs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of senior secured asset-based financing transferred to another entity, funded as of certain date.

No definition available.