XML 68 R58.htm IDEA: XBRL DOCUMENT
v3.21.2

FVM - Fair value measurement (Narrative) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2021
Disclosure Of Fair Value Measurement [Line Items] |  |
Gains / (losses) from own credit on financial liabilities designated at fair value, before tax | $ 118 |
Statement that there were no transfers between Level 1 and Level 2 of fair value hierarchy, assets |  | During the first six months of 2021, assets and liabilities transferred from Level 2 to Level 1, or from Level 1 to Level 2, that were held for the entire reporting period, were not material.
Statement that there were no transfers between Level 1 and Level 2 of fair value hierarchy, liabilities |  | During the first six months of 2021, assets and liabilities transferred from Level 2 to Level 1, or from Level 1 to Level 2, that were held for the entire reporting period, were not material.

X
- Definition The amount of other comprehensive income, before tax, related to change in the fair value of financial liability attributable to change in the credit risk of the liability. [Refer: Other comprehensive income, before tax; Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_7&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 91 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_91_b&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_OtherComprehensiveIncomeBeforeTaxChangeInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiability
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The statement that there were no transfers between Level 1 and Level 2 of the fair value hierarchy of assets during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2020-01-01 -Paragraph 93 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2020-en-r&anchor=para_93_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_StatementThatThereWereNoTransfersBetweenLevel1AndLevel2OfFairValueHierarchyAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The statement that there were no transfers between Level 1 and Level 2 of the fair value hierarchy of liabilities during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 13 -IssueDate 2020-01-01 -Paragraph 93 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2020-en-r&anchor=para_93_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_StatementThatThereWereNoTransfersBetweenLevel1AndLevel2OfFairValueHierarchyLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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