XML 100 R90.htm IDEA: XBRL DOCUMENT
v3.21.2

Currency translation rates (Detail) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
1 CHF |  |  |  |  |  |  |
Foreign Exchange Rates [Line Items] |  |  |  |  |  |  |
Closing exchange rate |  | 1.08 | 1.06 | 1.06 | 1.08 | 1.06 | 1.13
Average rate | [1] | 1.10 | 1.09 | 1.04 | 1.09 | 1.04 |
1 EUR |  |  |  |  |  |  |
Foreign Exchange Rates [Line Items] |  |  |  |  |  |  |
Closing exchange rate |  | 1.19 | 1.17 | 1.12 | 1.19 | 1.12 | 1.22
Average rate | [1] | 1.20 | 1.20 | 1.11 | 1.20 | 1.11 |
1 GBP |  |  |  |  |  |  |
Foreign Exchange Rates [Line Items] |  |  |  |  |  |  |
Closing exchange rate |  | 1.38 | 1.38 | 1.24 | 1.38 | 1.24 | 1.37
Average rate | [1] | 1.39 | 1.38 | 1.24 | 1.39 | 1.26 |
100 JPY |  |  |  |  |  |  |
Foreign Exchange Rates [Line Items] |  |  |  |  |  |  |
Closing exchange rate |  | 0.90 | 0.90 | 0.93 | 0.90 | 0.93 | 0.97
Average rate | [1] | 0.91 | 0.93 | 0.93 | 0.92 | 0.93 |
[1] | <div>Monthly income statement items of operations with a functional currency other than the US dollar are translated into US dollars using month-end rates. Disclosed average rates for a quarter represent an average of three month-end rates, weighted according to the income and expense volumes of all operations of the Group with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for the Group.</div>

X
- Definition The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_AverageForeignExchangeRate
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ClosingForeignExchangeRate
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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_ForeignExchangeRatesLineItems
Namespace Prefix: | ubs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ubs_CurrencyTranslationRateAxis=ubs_CHFCurrencyExchangeRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ubs_CurrencyTranslationRateAxis=ubs_EURCurrencyExchangeRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ubs_CurrencyTranslationRateAxis=ubs_GBPCurrencyExchangeRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ubs_CurrencyTranslationRateAxis=ubs_JPYCurrencyExchangeRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |