Trading revenues (Details) - CHF (SFr)
SFr in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Trading revenues      
Trading revenues SFr 2,431 SFr 3,295 SFr 1,739
Interest rate products      
Trading revenues      
Trading revenues 1,286 (1) 96
Foreign exchange products      
Trading revenues      
Trading revenues 1,585 2,473 668
Equity/index-related products      
Trading revenues      
Trading revenues 1,390 422 1,071
Credit products      
Trading revenues      
Trading revenues (1,826) 192 (513)
Commodity, emission and energy products      
Trading revenues      
Trading revenues (12) 132 144
Other trading securities      
Trading revenues      
Trading revenues 8 77 273
Bank      
Trading revenues      
Trading revenues 2,371 3,178 1,773
Bank | Interest rate products      
Trading revenues      
Trading revenues 1,257 (91) 67
Bank | Foreign exchange products      
Trading revenues      
Trading revenues 1,580 2,482 656
Bank | Equity/index-related products      
Trading revenues      
Trading revenues 1,365 387 1,146
Bank | Credit products      
Trading revenues      
Trading revenues (1,826) 192 (513)
Bank | Commodity, emission and energy products      
Trading revenues      
Trading revenues (12) 132 144
Bank | Other trading securities      
Trading revenues      
Trading revenues SFr 7 SFr 76 SFr 273