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Other financial liabilities designated at fair value (Detail) - USD ($) $ in Millions | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022
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Disclosure Of Financial Liabilities [Line Items] |  |  |
Financial liabilities related to unit-linked investment contracts | $ 15,124 | $ 14,243 | $ 13,221
Securities financing transactions | 13,295 | 9,707 | 15,333
Over-the-counter debt instruments and other | 7,703 | 1,809 | 1,684
Total other financial liabilities designated at fair value | 36,122 | $ 25,758 | $ 30,237
Credit Suisse |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |
Total other financial liabilities designated at fair value | $ 6,996 |  |

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