CECL (Details 12) - CHF (SFr)
SFr in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Origination in current year |
SFr 5
|
SFr 0
|
| Origination in current year-2 |
0
|
70
|
| Origination in current year-3 |
63
|
2
|
| Origination in current year-4 |
2
|
4
|
| Origination 5 years or more |
2
|
0
|
| Total term positions |
72
|
76
|
| Revolving positions |
970
|
934
|
| Other financial assets held at amortized cost, total |
1,042
|
1,010
|
| Investment grade | AAA to BBB |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Origination in current year |
0
|
0
|
| Origination in current year-2 |
0
|
0
|
| Origination in current year-3 |
0
|
0
|
| Origination in current year-4 |
0
|
0
|
| Origination 5 years or more |
0
|
0
|
| Total term positions |
0
|
0
|
| Revolving positions |
0
|
0
|
| Other financial assets held at amortized cost, total |
0
|
0
|
| Non-investment grade | BB to C |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Origination in current year |
5
|
0
|
| Origination in current year-2 |
0
|
70
|
| Origination in current year-3 |
63
|
2
|
| Origination in current year-4 |
2
|
4
|
| Origination 5 years or more |
2
|
0
|
| Total term positions |
72
|
76
|
| Revolving positions |
970
|
934
|
| Other financial assets held at amortized cost, total |
1,042
|
1,010
|
| Non-investment grade | D |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Origination in current year |
0
|
0
|
| Origination in current year-2 |
0
|
0
|
| Origination in current year-3 |
0
|
0
|
| Origination in current year-4 |
0
|
0
|
| Origination 5 years or more |
0
|
0
|
| Total term positions |
0
|
0
|
| Revolving positions |
0
|
0
|
| Other financial assets held at amortized cost, total |
0
|
0
|
| Bank |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Origination in current year |
5
|
0
|
| Origination in current year-2 |
0
|
70
|
| Origination in current year-3 |
63
|
2
|
| Origination in current year-4 |
2
|
4
|
| Origination 5 years or more |
2
|
0
|
| Total term positions |
72
|
76
|
| Revolving positions |
970
|
934
|
| Other financial assets held at amortized cost, total |
1,042
|
1,010
|
| Bank | Investment grade | AAA to BBB |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Origination in current year |
0
|
0
|
| Origination in current year-2 |
0
|
0
|
| Origination in current year-3 |
0
|
0
|
| Origination in current year-4 |
0
|
0
|
| Origination 5 years or more |
0
|
0
|
| Total term positions |
0
|
0
|
| Revolving positions |
0
|
0
|
| Other financial assets held at amortized cost, total |
0
|
0
|
| Bank | Non-investment grade | BB to C |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Origination in current year |
5
|
0
|
| Origination in current year-2 |
0
|
70
|
| Origination in current year-3 |
63
|
2
|
| Origination in current year-4 |
2
|
4
|
| Origination 5 years or more |
2
|
0
|
| Total term positions |
72
|
76
|
| Revolving positions |
970
|
934
|
| Other financial assets held at amortized cost, total |
1,042
|
1,010
|
| Bank | Non-investment grade | D |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Origination in current year |
0
|
0
|
| Origination in current year-2 |
0
|
0
|
| Origination in current year-3 |
0
|
0
|
| Origination in current year-4 |
0
|
0
|
| Origination 5 years or more |
0
|
0
|
| Total term positions |
0
|
0
|
| Revolving positions |
0
|
0
|
| Other financial assets held at amortized cost, total |
SFr 0
|
SFr 0
|