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

The amount of valuation adjustments made on financial instruments which reflect the costs and benefits of funding associated with uncollateralized and partially collateralized derivative receivables and payables, and adjustment made to the measurement of derivative liabilities to reflect the own credit risk of the entity.

No definition available.

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

The amount of valuation adjustments made on financial instruments relating to liquidity.

No definition available.

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

The amount of valuation adjustments made on financial instruments relating to model uncertainty.

No definition available.

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

The amount of other valuation adjustments made on financial instruments.

No definition available.

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

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

No definition available.