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Litigation, regulatory and similar matters (Detail 1) $ in Millions | 3 Months Ended
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Jun. 30, 2021 USD ($)
Disclosure Of Other Provisions [Line Items] |  |
Balance at the beginning of period | $ 2,481 |
Increase in provisions recognized in the income statement | 267 |
Release of provisions recognized in the income statement | (34) |
Provisions used in conformity with designated purpose | (82) |
Foreign currency translation / unwind of discount | 13 |
Balance at the end of period | 2,646 |
Litigation, regulatory and similar matters |  |
Disclosure Of Other Provisions [Line Items] |  |
Balance at the beginning of period | 2,072 | [1],[2]
Increase in provisions recognized in the income statement | 87 | [1],[2]
Release of provisions recognized in the income statement | (24) | [1],[2]
Provisions used in conformity with designated purpose | (27) | [1],[2]
Foreign currency translation / unwind of discount | 11 | [1],[2]
Balance at the end of period | 2,119 | [1],[2]
Litigation, regulatory and similar matters | Global Wealth Management |  |
Disclosure Of Other Provisions [Line Items] |  |
Balance at the beginning of period | 810 | [2]
Increase in provisions recognized in the income statement | 20 | [2]
Release of provisions recognized in the income statement | (11) | [2]
Provisions used in conformity with designated purpose | (27) | [2]
Foreign currency translation / unwind of discount | 8 | [2]
Balance at the end of period | 800 | [2]
Litigation, regulatory and similar matters | Personal & Corporate Banking |  |
Disclosure Of Other Provisions [Line Items] |  |
Balance at the beginning of period | 109 | [2]
Increase in provisions recognized in the income statement | 0 | [2]
Release of provisions recognized in the income statement | (11) | [2]
Provisions used in conformity with designated purpose | 0 | [2]
Foreign currency translation / unwind of discount | 2 | [2]
Balance at the end of period | 100 | [2]
Litigation, regulatory and similar matters | Asset Management |  |
Disclosure Of Other Provisions [Line Items] |  |
Balance at the beginning of period | 1 | [2]
Increase in provisions recognized in the income statement | 0 | [2]
Release of provisions recognized in the income statement | 0 | [2]
Provisions used in conformity with designated purpose | 0 | [2]
Foreign currency translation / unwind of discount | 0 | [2]
Balance at the end of period | 1 | [2]
Litigation, regulatory and similar matters | Investment Bank |  |
Disclosure Of Other Provisions [Line Items] |  |
Balance at the beginning of period | 217 | [2]
Increase in provisions recognized in the income statement | 66 | [2]
Release of provisions recognized in the income statement | (2) | [2]
Provisions used in conformity with designated purpose | 0 | [2]
Foreign currency translation / unwind of discount | 1 | [2]
Balance at the end of period | 282 | [2]
Litigation, regulatory and similar matters | Group Functions |  |
Disclosure Of Other Provisions [Line Items] |  |
Balance at the beginning of period | 935 | [2]
Increase in provisions recognized in the income statement | 1 | [2]
Release of provisions recognized in the income statement | 0 | [2]
Provisions used in conformity with designated purpose | 0 | [2]
Foreign currency translation / unwind of discount | 0 | [2]
Balance at the end of period | $ 936 | [2]
[1] | <div>Comprises provisions for losses resulting from legal, liability and compliance risks</div>
[2] | <div>Provisions, if any, for matters described in this Note are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this Note are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this Note in item 5 are allocated between the Investment Bank and Group Functions.</div>

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