Revenue from contracts with customers (Details 2) - CHF (SFr) SFr in Millions |
3 Months Ended | ||||
|---|---|---|---|---|---|
Dec. 31, 2021 |
Sep. 30, 2021 |
Jun. 30, 2021 |
Mar. 31, 2021 |
Dec. 31, 2020 |
|
| Contract balances [Line Items] | |||||
| Accounts Receivable, Net | SFr 865 | SFr 1,001 | |||
| Contract with Customer, Liability | 55 | 48 | |||
| Contract with Customer, Liability, Revenue Recognized | 9 | SFr 10 | SFr 18 | SFr 8 | |
| Bank | |||||
| Contract balances [Line Items] | |||||
| Accounts Receivable, Net | 865 | 993 | |||
| Contract with Customer, Liability | 55 | SFr 48 | |||
| Contract with Customer, Liability, Revenue Recognized | SFr 9 | SFr 10 | SFr 18 | SFr 8 | |