TFA - Carrying amounts for sale treatmen not achieved (Details 5) - CHF (SFr)
SFr in Millions
Dec. 31, 2021
Dec. 31, 2020
RMBS | Other assets    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Assets, transfer of financial interest, sale treatment not achieved SFr 257 SFr 0
RMBS | Other liabilities    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Liability to SPE, transfer of financial interest, sale treatment not achieved (257) 0
Other asset-backed financings | Trading assets    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Assets, transfer of financial interest, sale treatment not achieved 557 496
Other asset-backed financings | Other assets    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Assets, transfer of financial interest, sale treatment not achieved 200 246
Other asset-backed financings | Other liabilities    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Liability to SPE, transfer of financial interest, sale treatment not achieved (757) (742)
Bank | RMBS | Other assets    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Assets, transfer of financial interest, sale treatment not achieved 257 0
Bank | RMBS | Other liabilities    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Liability to SPE, transfer of financial interest, sale treatment not achieved (257) 0
Bank | Other asset-backed financings | Trading assets    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Assets, transfer of financial interest, sale treatment not achieved 557 496
Bank | Other asset-backed financings | Other assets    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Assets, transfer of financial interest, sale treatment not achieved 200 246
Bank | Other asset-backed financings | Other liabilities    
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved    
Liability to SPE, transfer of financial interest, sale treatment not achieved SFr (757) SFr (742)