The amount of contingent liabilities recognised in a business combination. [Refer: Classes of contingent liabilities [domain]; Total for all business combinations [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2025-01-01
-Paragraph B67
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67_c&doctype=Appendix&subtype=B
-URIDate 2025-03-27

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- Definition

The increase (decrease) in contingent liabilities recognised in a business combination. [Refer: Contingent liabilities recognised in business combination; Total for all business combinations [member]; Classes of contingent liabilities [domain]]

+ References

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- Definition

The amount of client assets seized by the court.

+ References

No definition available.

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- Definition

The amount of compensatory claim to be paid.

+ References

No definition available.

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- Definition

Damages award announced in the verdict of the Geneva criminal court.

+ References

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- 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.

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- Definition

The amount of estimated losses not covered by existing provisions.

+ References

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- Definition

Fine decision Swiss Federal Criminal Court.

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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

No definition available.

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- Definition

The minimum amount of total claims against all defendants.

+ References

No definition available.

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- Definition

Revised damages award announced in the verdict of the Singapore International Commercial Court.

+ References

No definition available.

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Litigation, regulatory and similar matters (Narrative) (Detail) SFr in Millions, $ in Millions, € in Billions	6 Months Ended
	Jun. 30, 2026 CHF (SFr)	Jun. 30, 2026 EUR (€)	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
IFRS 3 acquisition-related contingent liabilities			$ 316	$ 531
Increase / (decrease) in IFRS 3 acquisition-related contingent liabilities			(200)
Minimum
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Estimated losses not covered by existing provisions			0
Maximum
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Estimated losses not covered by existing provisions			1,500
Madoff \| claims filed in Luxembourg by liquidators of two Luxembourg funds against UBS entities, non-UBS entities and certain individuals \| UBS
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Minimum total claims against all defendants \| €		€ 2.1
Madoff \| claims filed in the US by BMIS Trustee against UBS entities and various other parties \| UBS
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Minimum total claims against all defendants			2,000
Amounts claimed			125
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
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
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
Customer account matters \| Former relationship manager \| Credit Suisse
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Damage award Geneva criminal court			130
Customer account matters \| Singapore civil lawsuits \| Credit Suisse
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Revised damage award Singapore International Commercial Court			$ 461
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