Investment securities - Maturities of amortized costs/FV/Avg yield (Details 6) - CHF (SFr)
SFr in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Due within 1 year, amortized cost |
SFr 154
|
|
| Due from 1 to 5 years, amortized cost |
95
|
|
| Due from 5 to 10 years, amortized cost |
764
|
|
| Total, amortized cost, before allowance for credit losses |
1,013
|
SFr 596
|
| Due within 1 year, fair value |
154
|
|
| Due from 1 to 5 years, fair value |
95
|
|
| Due from 5 to 10 years, fair value |
756
|
|
| Total, fair value |
SFr 1,005
|
607
|
| Due within 1 year, average yield (as a percent) |
0.03%
|
|
| Due from 1 to 5 years, average yield (as a percent) |
0.05%
|
|
| Due from 5 to 10 years, average yield (as a percent) |
0.07%
|
|
| Total, average yield (as a percent) |
0.06%
|
|
| Bank |
|
|
| Debt Securities, Available-for-sale [Line Items] |
|
|
| Due within 1 year, amortized cost |
SFr 154
|
|
| Due from 1 to 5 years, amortized cost |
93
|
|
| Due from 5 to 10 years, amortized cost |
764
|
|
| Total, amortized cost, before allowance for credit losses |
1,011
|
595
|
| Due within 1 year, fair value |
154
|
|
| Due from 1 to 5 years, fair value |
93
|
|
| Due from 5 to 10 years, fair value |
756
|
|
| Total, fair value |
SFr 1,003
|
SFr 605
|
| Due within 1 year, average yield (as a percent) |
0.03%
|
|
| Due from 1 to 5 years, average yield (as a percent) |
0.02%
|
|
| Due from 5 to 10 years, average yield (as a percent) |
0.07%
|
|
| Total, average yield (as a percent) |
0.06%
|
|