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Derivatives and hedging activities - Movements (Details 2) - CHF (SFr) SFr in Millions | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Fair value hedges | Interest rate derivatives | Interest and dividend income [Member] |  |
Derivative Instruments, Gain (Loss) |  |
Hedged items | SFr 392 | SFr 2,508
Derivatives designated as hedging instruments | (400) | (2,370)
Cash flow hedges |  |
Derivative Instruments, Gain (Loss) |  |
Expected reclassification of net gains/(losses) from AOCI into earnings during the next 12 months | (515) |
Cash flow hedges | Interest rate derivatives |  |
Derivative Instruments, Gain (Loss) |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax | 342 | (821)
Cash flow hedges | Interest rate derivatives | Interest and dividend income [Member] |  |
Derivative Instruments, Gain (Loss) |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 104 | 177
Cash flow hedges | Foreign exchange derivatives |  |
Derivative Instruments, Gain (Loss) |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax | 17 | (50)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | (10) | (22)
Cash flow hedges | Foreign exchange derivatives | Other Expense [Member] |  |
Derivative Instruments, Gain (Loss) |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | (10) | (22)
Net investment hedges | Foreign exchange derivatives |  |
Derivative Instruments, Gain (Loss) |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax | (81) | (57)
Net investment hedges | Foreign exchange derivatives | Other Income [Member] |  |
Derivative Instruments, Gain (Loss) |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | SFr 4 | SFr 0

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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986 + Details
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