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CECL (Details 14)
SFr in Millions
12 Months Ended
Dec. 31, 2022
CHF (SFr)
contract
Dec. 31, 2021
CHF (SFr)
contract
Dec. 31, 2020
CHF (SFr)
contract
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 16 21 20
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 306 SFr 481 SFr 292
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 264 SFr 465 SFr 260
Restructured loans, subsequently defaulted, Number of contracts | contract 0 4 4
Restructured loans, subsequently defaulted, Recorded Investment SFr 0 SFr 170 SFr 13
Consumer | Loans collateralized by securities      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 0 1 3
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 0 SFr 33 SFr 165
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 0 SFr 25 SFr 165
Restructured loans, subsequently defaulted, Number of contracts | contract 0 3 0
Restructured loans, subsequently defaulted, Recorded Investment SFr 0 SFr 156 SFr 0
Corporate and institutional | Real estate      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 1 1 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 102 SFr 2 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 82 SFr 2 SFr 0
Corporate and institutional | Commercial and industrial loans      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 15 18 17
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 204 SFr 402 SFr 127
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 182 SFr 394 SFr 95
Restructured loans, subsequently defaulted, Number of contracts | contract 0 1 4
Restructured loans, subsequently defaulted, Recorded Investment SFr 0 SFr 14 SFr 13
Corporate and institutional | Financial institutions      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 0 1 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 0 SFr 44 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 0 SFr 44 SFr 0
Bank      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 16 21 20
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 306 SFr 481 SFr 292
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 264 SFr 465 SFr 260
Restructured loans, subsequently defaulted, Number of contracts | contract 0 4 4
Restructured loans, subsequently defaulted, Recorded Investment SFr 0 SFr 170 SFr 13
Bank | Consumer | Loans collateralized by securities      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 0 1 3
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 0 SFr 33 SFr 165
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 0 SFr 25 SFr 165
Restructured loans, subsequently defaulted, Number of contracts | contract 0 3 0
Restructured loans, subsequently defaulted, Recorded Investment SFr 0 SFr 156 SFr 0
Bank | Corporate and institutional | Real estate      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 1 1 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 102 SFr 2 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 82 SFr 2 SFr 0
Bank | Corporate and institutional | Commercial and industrial loans      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 15 18 17
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 204 SFr 402 SFr 127
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 182 SFr 394 SFr 95
Restructured loans, subsequently defaulted, Number of contracts | contract 0 1 4
Restructured loans, subsequently defaulted, Recorded Investment SFr 0 SFr 14 SFr 13
Bank | Corporate and institutional | Financial institutions      
Restructured loans      
Restructured loans, Modifications, Number of contracts | contract 0 1 0
Restructured loans, Modifications, Pre-Modification Recorded Investment SFr 0 SFr 44 SFr 0
Restructured loans, Modifications, Post-Modification Recorded Investment SFr 0 SFr 44 SFr 0