Variable interest entities (VIE) - Consolidated (Details 7)
SFr in Millions
 12 Months Ended
Dec. 31, 2021
CHF (SFr)
day
Dec. 31, 2020
CHF (SFr)
Dec. 31, 2019
CHF (SFr)
Dec. 31, 2018
CHF (SFr)
VIE Disclosures        
Percentage of control in which Group is determined to have power (percent) 50.00%      
Minimum percentage of outstanding issuances held by primary beneficiary used under the previous consolidation model 50.00%      
Cash and due from banks [1] SFr 164,818 SFr 139,112 SFr 101,879 SFr 100,047
Central bank funds sold, securities purchased under resale agreements and securities borrowing transactions 103,906 92,276    
Trading assets 111,141 157,338    
Investment securities 1,005 607    
Other investments 5,826 5,412    
Net loans 291,686 291,908    
Other assets 41,231 39,637    
of which loans held-for-sale 7,924 7,046    
Premises and equipment 4,893 4,776    
Assets 755,833 818,965    
Customer deposits 392,819 390,921    
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions 35,274 36,994    
Trading liabilities 27,535 45,871    
Short-term borrowings 19,393 20,868    
Long-term debt 166,896 161,087    
Other liabilities 22,644 31,434    
Liabilities SFr 711,603 776,024    
CP Conduit        
VIE Disclosures        
Average maturity of CP (in days) | day 226      
Consolidated VIEs        
VIE Disclosures        
Cash and due from banks SFr 108 90    
Trading assets 1,822 2,164    
Other investments 1,015 1,251    
Net loans 1,400 900    
Other assets 1,496 1,876    
of which loans held-for-sale 74 472    
Premises and equipment 27 34    
Assets 5,841 6,281    
Customer deposits 0 1    
Trading liabilities 8 10    
Short-term borrowings 4,352 4,178    
Long-term debt 1,391 1,746    
Other liabilities 231 208    
Liabilities 5,982 6,143    
Consolidated VIEs | CP Conduit        
VIE Disclosures        
Cash and due from banks 1 0    
Trading assets 0 0    
Other investments 0 0    
Net loans 1,022 653    
Other assets 31 21    
of which loans held-for-sale 0 0    
Premises and equipment 0 0    
Assets 1,054 674    
Customer deposits   0    
Trading liabilities 0 0    
Short-term borrowings 4,337 4,178    
Long-term debt 0 0    
Other liabilities 67 53    
Liabilities 4,404 4,231    
Consolidated VIEs | Financial intermediation - Securitizations        
VIE Disclosures        
Cash and due from banks 42 23    
Trading assets 1,158 1,255    
Other investments 0 0    
Net loans 317 0    
Other assets 604 979    
of which loans held-for-sale 50 462    
Premises and equipment 0 0    
Assets 2,121 2,257    
Customer deposits   0    
Trading liabilities 0 0    
Short-term borrowings 0 0    
Long-term debt 1,342 1,701    
Other liabilities 1 1    
Liabilities 1,343 1,702    
Consolidated VIEs | Financial intermediation - Funds        
VIE Disclosures        
Cash and due from banks 25 22    
Trading assets 54 50    
Other investments 65 129    
Net loans 0 51    
Other assets 78 15    
of which loans held-for-sale 23 10    
Premises and equipment 0 0    
Assets 222 267    
Customer deposits   0    
Trading liabilities 0 0    
Short-term borrowings 15 0    
Long-term debt 0 0    
Other liabilities 20 3    
Liabilities 35 3    
Consolidated VIEs | Financial intermediation - Loans        
VIE Disclosures        
Cash and due from banks 27 37    
Trading assets 610 840    
Other investments 789 920    
Net loans 28 29    
Other assets 108 82    
of which loans held-for-sale 0 0    
Premises and equipment 27 30    
Assets 1,562 1,908    
Customer deposits   0    
Trading liabilities 8 10    
Short-term borrowings 0 0    
Long-term debt 3 10    
Other liabilities 60 73    
Liabilities 71 93    
Consolidated VIEs | Financial intermediation - Other        
VIE Disclosures        
Cash and due from banks 13 8    
Trading assets 0 19    
Other investments 161 202    
Net loans 33 167    
Other assets 675 779    
of which loans held-for-sale 1 0    
Premises and equipment 0 4    
Assets 882 1,175    
Customer deposits   1    
Trading liabilities 0 0    
Short-term borrowings 0 0    
Long-term debt 46 35    
Other liabilities 83 78    
Liabilities 129 114    
Bank        
VIE Disclosures        
Cash and due from banks [2] 164,026 138,207 SFr 101,044 SFr 99,314
Central bank funds sold, securities purchased under resale agreements and securities borrowing transactions 103,906 92,276    
Trading assets 111,299 157,511    
Investment securities 1,003 605    
Other investments 5,788 5,379    
Net loans 300,358 300,341    
Other assets 36,715 36,574    
of which loans held-for-sale 7,924 7,046    
Premises and equipment 4,424 4,358    
Assets 759,214 822,831    
Customer deposits 393,841 392,039    
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions 35,368 37,087    
Trading liabilities 27,539 45,871    
Short-term borrowings 25,336 21,308    
Long-term debt 160,695 160,279    
Other liabilities 21,309 30,340    
Liabilities SFr 711,127 775,772    
Bank | CP Conduit        
VIE Disclosures        
Average maturity of CP (in days) | day 226      
Bank | Consolidated VIEs        
VIE Disclosures        
Cash and due from banks SFr 108 90    
Trading assets 1,822 2,164    
Other investments 1,015 1,251    
Net loans 1,400 900    
Other assets 1,482 1,858    
of which loans held-for-sale 74 472    
Premises and equipment 12 17    
Assets 5,827 6,263    
Customer deposits 0 1    
Trading liabilities 8 10    
Short-term borrowings 4,352 4,178    
Long-term debt 1,391 1,746    
Other liabilities 233 207    
Liabilities 5,984 6,142    
Bank | Consolidated VIEs | CP Conduit        
VIE Disclosures        
Cash and due from banks 1 0    
Trading assets 0 0    
Other investments 0 0    
Net loans 1,022 653    
Other assets 31 21    
of which loans held-for-sale 0 0    
Premises and equipment 0 0    
Assets 1,054 674    
Customer deposits   0    
Trading liabilities 0 0    
Short-term borrowings 4,337 4,178    
Long-term debt 0 0    
Other liabilities 67 53    
Liabilities 4,404 4,231    
Bank | Consolidated VIEs | Financial intermediation - Securitizations        
VIE Disclosures        
Cash and due from banks 42 23    
Trading assets 1,158 1,255    
Other investments 0 0    
Net loans 317 0    
Other assets 604 979    
of which loans held-for-sale 50 462    
Premises and equipment 0 0    
Assets 2,121 2,257    
Customer deposits   0    
Trading liabilities 0 0    
Short-term borrowings 0 0    
Long-term debt 1,342 1,701    
Other liabilities 1 1    
Liabilities 1,343 1,702    
Bank | Consolidated VIEs | Financial intermediation - Funds        
VIE Disclosures        
Cash and due from banks 25 22    
Trading assets 54 50    
Other investments 65 129    
Net loans 0 51    
Other assets 78 15    
of which loans held-for-sale 23 10    
Premises and equipment 0 0    
Assets 222 267    
Customer deposits   0    
Trading liabilities 0 0    
Short-term borrowings 15 0    
Long-term debt 0 0    
Other liabilities 20 3    
Liabilities 35 3    
Bank | Consolidated VIEs | Financial intermediation - Loans        
VIE Disclosures        
Cash and due from banks 27 37    
Trading assets 610 840    
Other investments 789 920    
Net loans 28 29    
Other assets 95 65    
of which loans held-for-sale 0 0    
Premises and equipment 12 13    
Assets 1,549 1,891    
Customer deposits   0    
Trading liabilities 8 10    
Short-term borrowings 0 0    
Long-term debt 3 10    
Other liabilities 61 72    
Liabilities 72 92    
Bank | Consolidated VIEs | Financial intermediation - Other        
VIE Disclosures        
Cash and due from banks 13 8    
Trading assets 0 19    
Other investments 161 202    
Net loans 33 167    
Other assets 674 778    
of which loans held-for-sale 1 0    
Premises and equipment 0 4    
Assets 881 1,174    
Customer deposits   1    
Trading liabilities 0 0    
Short-term borrowings 0 0    
Long-term debt 46 35    
Other liabilities 84 78    
Liabilities SFr 130 SFr 114    
[1] Includes restricted cash.
[2] Includes restricted cash.