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Assets under management (Details) - CHF (SFr)
SFr in Billions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Assets under management [Line Items]      
Assets in collective investment instruments managed by Credit Suisse SFr 196.7 SFr 231.8  
Assets with discretionary mandates 244.1 294.8  
Other assets under management 852.8 1,087.4  
Assets under management (including double counting) 1,293.6 1,614.0 SFr 1,511.9
of which double counting 32.1 46.2  
Bank      
Assets under management [Line Items]      
Assets in collective investment instruments managed by Credit Suisse 194.6 228.9  
Assets with discretionary mandates 244.1 294.8  
Other assets under management 852.8 1,087.3  
Assets under management (including double counting) 1,291.5 1,611.0 SFr 1,507.0
of which double counting SFr 31.9 SFr 45.9