v3.26.1
FVM - Financial instruments not measured at fair value - Liabilities (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Amounts due to banks $ 27,345 $ 24,434
Payables from securities financing transactions measured at amortized cost 20,449 16,225
Cash collateral payables on derivative instruments 37,783 34,742
Customer deposits 790,201 796,330
Funding from UBS Group AG measured at amortized cost 110,727 110,614
Debt issued measured at amortized cost 109,939 100,207
Other financial liabilities measured at amortized cost excluding lease liabilities 13,900 13,100
Fair value    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Amounts due to banks 27,400 24,500
Payables from securities financing transactions measured at amortized cost 20,400 16,200
Cash collateral payables on derivative instruments 37,800 34,700
Customer deposits 791,000 796,700
Funding from UBS Group AG measured at amortized cost 114,300 114,600
Debt issued measured at amortized cost 110,700 100,600
Other financial liabilities measured at amortized cost excluding lease liabilities $ 13,900 $ 13,100