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FVM - Movements of level 3 instruments - Assets (Detail) - Level 3 - USD ($) $ in Billions | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Investment fund units |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | $ 0.3 |
Balance at the end of the period | 0.8 |
Corporate and municipal bonds |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.8 |
Balance at the end of the period | 1.4 |
Equity instruments |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.9 |
Balance at the end of the period | 3.5 |
Auction rate securities |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 1.3 |
Balance at the end of the period | 1.3 |
Financial assets at fair value held for trading |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 1.5 | $ 2.3
Credit Suisse assets acquired | 2.2 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | (0.5) | (0.1)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | (0.5) | (0.2)
Purchases | 0.5 | 0.3
Sales | (1.1) | (1.3)
Issuances | 0.7 | 1.0
Settlements | (0.0) | (0.0)
Transfers into Level 3 | 0.1 | 0.1
Transfers out of Level 3 | (0.3) | (0.3)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 3.1 | 1.9
Financial assets at fair value held for trading | Investment fund units |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.1 | 0.0
Credit Suisse assets acquired | 0.1 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | 0.0 | 0.0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | 0.0 | 0.0
Purchases | 0.0 | 0.0
Sales | (0.0) | (0.0)
Issuances | 0.0 | 0.0
Settlements | (0.0) | (0.0)
Transfers into Level 3 | 0.0 | 0.0
Transfers out of Level 3 | (0.0) | (0.0)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 0.1 | 0.0
Financial assets at fair value held for trading | Corporate and municipal bonds |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.5 | 0.6
Credit Suisse assets acquired | 1.1 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | (0.4) | 0.0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | (0.4) | 0.0
Purchases | 0.3 | 0.2
Sales | (0.6) | (0.1)
Issuances | 0.0 | 0.0
Settlements | (0.0) | (0.0)
Transfers into Level 3 | 0.0 | 0.0
Transfers out of Level 3 | (0.0) | (0.0)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 1.0 | 0.7
Financial assets at fair value held for trading | Loans |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.6 | 1.4
Credit Suisse assets acquired | 0.2 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | 0.0 | (0.1)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | 0.0 | (0.1)
Purchases | 0.0 | 0.0
Sales | (0.3) | (1.2)
Issuances | 0.7 | 1.0
Settlements | (0.0) | (0.0)
Transfers into Level 3 | 0.0 | 0.0
Transfers out of Level 3 | (0.2) | (0.2)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 1.0 | 1.0
Derivative financial instruments |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 1.5 | 1.1
Credit Suisse assets acquired | 1.4 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | (0.1) | 0.5
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | (0.1) | 0.6
Purchases | 0.0 | 0.0
Sales | (0.0) | (0.0)
Issuances | 0.5 | 0.5
Settlements | (0.3) | (0.4)
Transfers into Level 3 | 0.1 | 0.2
Transfers out of Level 3 | (0.2) | (0.2)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 3.0 | 1.8
Derivative financial instruments | Interest rate contracts |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.5 | 0.5
Credit Suisse assets acquired | 0.2 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | 0.1 | 0.1
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | 0.1 | 0.1
Purchases | 0.0 | 0.0
Sales | (0.0) | (0.0)
Issuances | 0.1 | 0.0
Settlements | (0.0) | (0.1)
Transfers into Level 3 | 0.0 | 0.1
Transfers out of Level 3 | (0.0) | (0.1)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 0.8 | 0.4
Derivative financial instruments | Equity / index contracts |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.7 | 0.4
Credit Suisse assets acquired | 0.5 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | (0.1) | 0.3
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | (0.1) | 0.3
Purchases | 0.0 | 0.0
Sales | (0.0) | (0.0)
Issuances | 0.3 | 0.2
Settlements | (0.2) | (0.2)
Transfers into Level 3 | 0.0 | 0.0
Transfers out of Level 3 | (0.2) | (0.0)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 1.1 | 0.7
Derivative financial instruments | Credit derivative contracts |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.3 | 0.2
Credit Suisse assets acquired | 0.2 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | 0.0 | 0.1
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | 0.0 | 0.1
Purchases | 0.0 | 0.0
Sales | (0.0) | (0.0)
Issuances | 0.1 | 0.2
Settlements | (0.0) | (0.0)
Transfers into Level 3 | 0.0 | 0.1
Transfers out of Level 3 | (0.0) | (0.0)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 0.6 | 0.6
Financial assets at fair value not held for trading |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 3.7 | 4.2
Credit Suisse assets acquired | 11.6 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | (0.1) | 0.1
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | (0.2) | 0.1
Purchases | 0.7 | 0.6
Sales | (0.5) | (0.6)
Issuances | 0.0 | 0.0
Settlements | (0.0) | (0.0)
Transfers into Level 3 | 0.1 | 0.0
Transfers out of Level 3 | (0.1) | (0.1)
Foreign currency translation | 0.0 | (0.1)
Balance at the end of the period | 15.4 | 4.2
Financial assets at fair value not held for trading | Loans |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.7 | 0.9
Credit Suisse assets acquired | 7.1 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | (0.1) | 0.0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | (0.1) | 0.0
Purchases | 0.4 | 0.5
Sales | (0.1) | (0.2)
Issuances | 0.0 | 0.0
Settlements | (0.0) | (0.0)
Transfers into Level 3 | 0.0 | 0.0
Transfers out of Level 3 | (0.1) | (0.1)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 7.9 | 1.0
Financial assets at fair value not held for trading | Equity instruments |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 0.8 | 0.7
Credit Suisse assets acquired | 2.1 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | 0.0 | 0.0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | 0.0 | 0.0
Purchases | 0.2 | 0.0
Sales | (0.1) | (0.1)
Issuances | 0.0 | 0.0
Settlements | (0.0) | (0.0)
Transfers into Level 3 | 0.0 | 0.0
Transfers out of Level 3 | (0.0) | (0.0)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | 3.1 | 0.7
Financial assets at fair value not held for trading | Auction rate securities |  |
Disclosure Of Fair Value Measurement Of Assets [Line Items] |  |
Balance at the beginning of the period | 1.3 | 1.6
Credit Suisse assets acquired | 0.0 |
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income | 0.0 | 0.1
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period | 0.0 | 0.1
Purchases | 0.0 | 0.0
Sales | (0.0) | (0.0)
Issuances | 0.0 | 0.0
Settlements | (0.0) | (0.0)
Transfers into Level 3 | 0.0 | 0.0
Transfers out of Level 3 | (0.0) | (0.0)
Foreign currency translation | 0.0 | 0.0
Balance at the end of the period | $ 1.3 | $ 1.6

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