Investment securities - Proceeds/realized gains/losses (Details 4) - CHF (SFr) SFr in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Proceeds from sales, realized gains and realized losses from available-for-sale securities | |||
| Proceeds from sales | SFr 0 | SFr 629 | SFr 6 |
| Realized gains | 0 | 42 | 0 |
| Bank | |||
| Proceeds from sales, realized gains and realized losses from available-for-sale securities | |||
| Proceeds from sales | 0 | 629 | SFr 6 |
| Realized gains | SFr 0 | SFr 42 | |