Related parties - Bank (Details 4) - Bank - CHF (SFr)
SFr in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Assets      
Net loans SFr 8,683 SFr 8,444  
Other assets 98 200  
Total assets 8,781 8,644  
Liabilities      
Due to banks/customer deposits 1,022 1,119  
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions 94 93  
Short-term borrowings 5,944 440  
Long-term debt 55,998 52,144  
Other liabilities 1,051 1,098  
Total liabilities 64,109 54,894  
Related party revenues and expenses      
Interest and dividend income (56) (39) SFr (5)
Interest expense (1,673) (1,618) (1,307)
Net interest income (1,729) (1,657) (1,312)
Commissions and fees 102 114 80
Other revenues 212 104 104
Net revenues (1,415) (1,439) (1,128)
Total operating expenses 2,089 1,967 SFr 1,867
Related party guarantees      
Revocable loan commitments 87 88  
Credit guarantees and similar instruments      
Related party guarantees      
Guarantees SFr 4 SFr 4