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Litigation, regulatory and similar matters (Narrative) (Detail) - 6 months ended Jun. 30, 2023 € in Thousands, $ in Thousands, £ in Millions, SFr in Millions | CHF (SFr) d | EUR (€) d | GBP (£) d | USD ($) d | USD ($)
--- | --- | --- | --- | --- | ---
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Acquisition-related contingent liabilities (IFRS 3, Business Combinations) |  |  |  |  | $ 2,992,000
Inquiries regarding cross-border wealth management businesses | Investigations in France |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Fine decision French Court | € |  | € 3,700,000 |  |  |
Civil damages award announcement of the French Court | € |  | 800,000 |  |  |
Provision recorded to cover pending legal case |  | 1,100,000 |  |  | $ 1,200,000
Inquiries regarding cross-border wealth management businesses | Investigations in France involving UBS AG |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Bail ("caution") ordered to be paid | € |  | 1,100,000 |  |  |
Fine decision French Court of Appeal | € |  | 3,750 |  |  |
Bail ("caution") ordered to be confiscated, verdict of the French Court of Appeal | € |  | 1,000,000 |  |  |
Civil damages award, verdict of the French Court of Appeal | € |  | 800,000 |  |  |
Civil damages award deducted from the bail, announcement of the French Court of Appeal | € |  | 99,000 |  |  |
Claims related to sales of residential mortgage-backed securities and mortgages |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Settlement made |  |  |  | $ 1,435,000 |
Madoff | claims filed in Luxembourg by liquidators of two Luxembourg funds against UBS entities, non-UBS entities and certain individuals |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Minimum total claims against all defendants | € |  | 2,100,000 |  |  |
Madoff | claims filed in the US by BMIS Trustee against UBS entities and various other parties |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Amounts claimed |  |  |  | 125,000 |
Minimum total claims against all defendants |  |  |  | 2,000,000 |
Foreign exchange, LIBOR and benchmark rates, and other trading practices |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Fine provided in announcement of the European Commission | € |  | € 172,000 |  |  |
Foreign exchange, LIBOR and benchmark rates, and other trading practices - Foreign exchange-related civil litigation | Claims under the Commodity Exchange Act |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Settlement made |  |  |  | $ 141,000 |
Mortgage-related matters | DOJ RMBS settlement | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Increase of customer relief per annum | 5.00% | 5.00% | 5.00% | 5.00% |
Mortgage-related matters | Action brought by Asset Backed Securities Corporation Home Equity Loan Trust, Series 2006-HE7 | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Amounts claimed |  |  |  | $ 374,000 |
Mortgage-related matters | Action brought by Home Equity Asset Trust, Series 2006-8 | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Amounts claimed |  |  |  | 436,000 |
Mortgage-related matters | Action brought by Home Equity Asset Trust 2007-1 | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Amounts claimed |  |  |  | 420,000 |
Mortgage-related matters | Action brought by Home Equity Asset Trust 2007-2 | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Amounts claimed |  |  |  | 495,000 |
Mortgage-related matters | Action brought by Home Equity Asset Trust, Series 2007-3 | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Amounts claimed |  |  |  | 206,000 |
Mortgage-related matters | Action brought by Home Equity Mortgage Trust | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Settlement made |  |  |  | 500,000 |
Mortgage-related matters | Action brought by Home Equity Mortgage Trust, Series 2006-1, 2006-3, 2006-4 | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Amounts claimed |  |  |  | 730,000 |
Mortgage-related matters | Action brought by Home Equity Mortgage Trust, Series 2006-5 | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Amounts claimed |  |  |  | 500,000 |
Rates-related matters | Foreign exchange trading business | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Fine provided in announcement of the European Commission | € |  | € 83,300 |  |  |
Rates-related matters | SSA bonds trading business | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Fine provided in announcement of the European Commission | € |  | € 11,900 |  |  |
Customer account matters | Former relationship manager | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Damage award Geneva criminal court |  |  |  | 130,000 |
Customer account matters | Singapore civil lawsuits | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Amounts claimed |  |  |  | 750,000 |
Customer account matters | Bermuda civil lawsuits | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Civil damage award Supreme Court of Bermuda |  |  |  | $ 607,350 |
Time to pay awarded damages to escrow account | d | 42 | 42 | 42 | 42 |
Bermuda statutory rate | 3.50% | 3.50% | 3.50% | 3.50% |
Mozambique matter | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Settlement made |  |  |  | $ 175,500 |
Civil penalty paid |  |  |  | 65,000 |
Disgorgement and pre-judgment interest paid |  |  |  | 34,000 |
Sanctions paid |  |  |  | 275,000 |
Restitution paid |  |  |  | 22,600 |
Net penalty paid |  |  |  | 175,600 |
Penalty paid |  |  |  | 200,000 |
Debt forgiven |  |  |  | $ 200,000 |
Bulgarian former client matter | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Fine decision Swiss Federal Criminal Court | SFr | SFr 2 |  |  |  |
Client assets seized decision Swiss Federal Criminal Court | SFr | 12 |  |  |  |
Compensatory claim ordered decision Swiss Federal Criminal Court | SFr | SFr 19 |  |  |  |
SCFF | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Business relationships to be reviewed | 500 | 500 | 500 | 500 |
Highest-ranking managers to have their responsibilities defined | 600 | 600 | 600 | 600 |
Archegos | Credit Suisse |  |  |  |  |
Disclosure Of Litigation Regulatory And Similar Matters [Line Items] |  |  |  |  |
Civil penalty agreed to be paid |  |  |  | $ 269,000 |
Penalty agreed to be paid | £ |  |  | £ 87 |  |

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