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Derivatives and hedging activities - Movements (Details 2) - CHF (SFr) SFr in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Fair value hedges | Interest rate derivatives | Interest and dividend income [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Hedged items | SFr 1,115 | SFr 1,756 | SFr (288) | SFr 2,871 | SFr 868
Derivatives designated as hedging instruments | (1,050) | (1,679) | 264 | (2,729) | (832)
Cash flow hedges |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Expected reclassification of net gains/(losses) from AOCI into earnings during the next 12 months | (437) |  |  |  |
Cash flow hedges | Interest rate derivatives |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax | (171) | (650) | (23) | (821) | (119)
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 | 173 | 4 | 7 | 177 | 10
Cash flow hedges | Foreign exchange derivatives |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax | (36) | (14) | 0 | (50) | 4
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | (16) | (6) | 15 | (22) | 25
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 | (16) | (6) | 15 | (22) | 25
Net investment hedges | Foreign exchange derivatives |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax | SFr 68 | SFr (122) | SFr 7 | (54) | (255)
Bank | Fair value hedges | Interest rate derivatives | Interest and dividend income [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Hedged items |  |  |  | 2,508 | 776
Derivatives designated as hedging instruments |  |  |  | (2,370) | (740)
Bank | Cash flow hedges |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Expected reclassification of net gains/(losses) from AOCI into earnings during the next 12 months |  |  |  | (437) |
Bank | Cash flow hedges | Interest rate derivatives |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax |  |  |  | (821) | (119)
Bank | 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 |  |  |  | 177 | 10
Bank | Cash flow hedges | Foreign exchange derivatives |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax |  |  |  | (50) | 4
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax |  |  |  | (22) | 25
Bank | 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 |  |  |  | (22) | 25
Bank | Net investment hedges | Foreign exchange derivatives |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax |  |  |  | SFr (57) | SFr (248)

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