v3.26.1
Litigation, regulatory and similar matters (Detail)
$ in Millions
 6 Months Ended
Jun. 30, 2026
USD ($)
Disclosure Of Other Provisions [Line Items]  
Balance as of 31 December 2025 $ 3,217
Increase in provisions recognized in the income statement 843
Release of provisions recognized in the income statement (157)
Provisions used in conformity with designated purpose (818)
Foreign currency translation and other movements 13
Balance as of 30 June 2026 3,098
Litigation, regulatory and similar matters  
Disclosure Of Other Provisions [Line Items]  
Balance as of 31 December 2025 2,109
Increase in provisions recognized in the income statement 326
Release of provisions recognized in the income statement (61)
Provisions used in conformity with designated purpose (451)
Foreign currency translation and other movements 12
Balance as of 30 June 2026 1,935
Litigation, regulatory and similar matters | Global Wealth Management  
Disclosure Of Other Provisions [Line Items]  
Balance as of 31 December 2025 317
Increase in provisions recognized in the income statement 41
Release of provisions recognized in the income statement (48)
Provisions used in conformity with designated purpose (106)
Foreign currency translation and other movements (1)
Balance as of 30 June 2026 203
Litigation, regulatory and similar matters | Personal & Corporate Banking  
Disclosure Of Other Provisions [Line Items]  
Balance as of 31 December 2025 16
Increase in provisions recognized in the income statement 7
Release of provisions recognized in the income statement (6)
Provisions used in conformity with designated purpose 0
Foreign currency translation and other movements 0
Balance as of 30 June 2026 15
Litigation, regulatory and similar matters | Asset Management  
Disclosure Of Other Provisions [Line Items]  
Balance as of 31 December 2025 0
Increase in provisions recognized in the income statement 0
Release of provisions recognized in the income statement 0
Provisions used in conformity with designated purpose 0
Foreign currency translation and other movements 0
Balance as of 30 June 2026 0
Litigation, regulatory and similar matters | Investment Bank  
Disclosure Of Other Provisions [Line Items]  
Balance as of 31 December 2025 283
Increase in provisions recognized in the income statement 4
Release of provisions recognized in the income statement (1)
Provisions used in conformity with designated purpose (7)
Foreign currency translation and other movements (6)
Balance as of 30 June 2026 274
Litigation, regulatory and similar matters | Non-core and Legacy  
Disclosure Of Other Provisions [Line Items]  
Balance as of 31 December 2025 1,302
Increase in provisions recognized in the income statement 272
Release of provisions recognized in the income statement (5)
Provisions used in conformity with designated purpose (262)
Foreign currency translation and other movements 19
Balance as of 30 June 2026 1,326
Litigation, regulatory and similar matters | Group Items  
Disclosure Of Other Provisions [Line Items]  
Balance as of 31 December 2025 191
Increase in provisions recognized in the income statement 2
Release of provisions recognized in the income statement 0
Provisions used in conformity with designated purpose (76)
Foreign currency translation and other movements 0
Balance as of 30 June 2026 $ 118