CECL (Details 14)
SFr in Millions
12 Months Ended
Dec. 31, 2021
CHF (SFr)
contract
Dec. 31, 2020
CHF (SFr)
contract
Dec. 31, 2019
CHF (SFr)
contract
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 21 20 26
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 481 SFr 292 SFr 179
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 465 SFr 260 SFr 168
Restructured loans, subsequently defaulted, Number of contracts | contract 4 4 2
Restructured loans, subsequently defaulted, Recorded Investment SFr 170 SFr 13 SFr 15
Consumer | Mortgages      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 0 0 1
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 0 SFr 0 SFr 7
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 0 SFr 0 SFr 7
Restructured loans, subsequently defaulted, Number of contracts | contract 0 0 1
Restructured loans, subsequently defaulted, Recorded Investment SFr 0 SFr 0 SFr 13
Consumer | Loans collateralized by securities      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 1 3 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 33 SFr 165 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 25 SFr 165 SFr 0
Restructured loans, subsequently defaulted, Number of contracts | contract 3 0 0
Restructured loans, subsequently defaulted, Recorded Investment SFr 156 SFr 0 SFr 0
Corporate and institutional | Real estate      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 1 0 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 2 SFr 0 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 2 SFr 0 SFr 0
Corporate and institutional | Commercial and industrial loans      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 18 17 25
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 402 SFr 127 SFr 172
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 394 SFr 95 SFr 161
Restructured loans, subsequently defaulted, Number of contracts | contract 1 4 1
Restructured loans, subsequently defaulted, Recorded Investment SFr 14 SFr 13 SFr 2
Corporate and institutional | Financial institutions      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 1 0 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 44 SFr 0 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 44 SFr 0 SFr 0
Bank      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 21 20 26
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 481 SFr 292 SFr 179
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 465 SFr 260 SFr 168
Restructured loans, subsequently defaulted, Number of contracts | contract 4 4 2
Restructured loans, subsequently defaulted, Recorded Investment SFr 170 SFr 13 SFr 15
Bank | Consumer | Mortgages      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 0 0 1
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 0 SFr 0 SFr 7
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 0 SFr 0 SFr 7
Restructured loans, subsequently defaulted, Number of contracts | contract 0 0 1
Restructured loans, subsequently defaulted, Recorded Investment SFr 0 SFr 0 SFr 13
Bank | Consumer | Loans collateralized by securities      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 1 3 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 33 SFr 165 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 25 SFr 165 SFr 0
Restructured loans, subsequently defaulted, Number of contracts | contract 3 0 0
Restructured loans, subsequently defaulted, Recorded Investment SFr 156 SFr 0 SFr 0
Bank | Corporate and institutional | Real estate      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 1 0 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 2 SFr 0 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 2 SFr 0 SFr 0
Bank | Corporate and institutional | Commercial and industrial loans      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 18 17 25
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 402 SFr 127 SFr 172
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 394 SFr 95 SFr 161
Restructured loans, subsequently defaulted, Number of contracts | contract 1 4 1
Restructured loans, subsequently defaulted, Recorded Investment SFr 14 SFr 13 SFr 2
Bank | Corporate and institutional | Financial institutions      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 1 0 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 44 SFr 0 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 44 SFr 0 SFr 0