FI - Quantitative information about level 3 liabilities at fair value (Details 15)
SFr in Millions, Pure in Millions
Dec. 31, 2021
CHF (SFr)
Dec. 31, 2020
CHF (SFr)
Liabilities    
Due to banks SFr 477 SFr 413
Customer deposits 3,700 4,343
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions 13,213 13,594
Obligation to return securities received as collateral 15,017 50,773
Trading liabilities 27,535 45,871
Short-term borrowings 10,690 10,740
Long-term debt 68,722 70,976
Other liabilities 2,592 7,780
Recurring basis    
Liabilities    
Due to banks 477 413
Customer deposits 3,700 4,343
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions 13,213 13,594
Obligation to return securities received as collateral 15,017 50,773
Trading liabilities 27,535 45,871
Short-term borrowings 10,690 10,740
Long-term debt 68,722 70,976
Other liabilities 2,592 7,780
Total liabilities at fair value 141,946 204,490
Recurring basis | Long-term debt - of which structured notes over one year and up to two years    
Liabilities    
Long-term debt 12,500 12,920
Recurring basis | Long-term debt - of which structured notes over two years    
Liabilities    
Long-term debt 30,486 33,856
Recurring basis | Long-term debt - of which other debt instruments over two years    
Liabilities    
Long-term debt 5,077  
Recurring basis | Long-term debt - of which high-trigger instruments    
Liabilities    
Long-term debt 10,702 10,586
Recurring basis | Debt securities    
Liabilities    
Trading liabilities 7,677  
Recurring basis | Debt securities | Debt securities issued by foreign governments    
Liabilities    
Trading liabilities 3,635  
Recurring basis | Debt securities | Corporate debt securities    
Liabilities    
Trading liabilities 3,955  
Recurring basis | Equity securities    
Liabilities    
Trading liabilities 9,012 20,694
Recurring basis | Short positions    
Liabilities    
Trading liabilities 16,689  
Recurring basis | Derivative instruments    
Liabilities    
Trading liabilities 10,846 17,745
Recurring basis | Level 3    
Liabilities    
Due to banks 0 0
Customer deposits 394 448
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions 0 0
Obligation to return securities received as collateral 14 101
Trading liabilities 2,809 4,246
Short-term borrowings 1,032 701
Long-term debt 9,676 7,268
Other liabilities 518 1,271
Total liabilities at fair value 14,443 14,035
Recurring basis | Level 3 | Option model    
Liabilities    
Short-term borrowings SFr 905 SFr 508
Recurring basis | Level 3 | Option model | Measurement Input, Buyback probability [Member] | Minimum    
Liabilities    
Short-term borrowings, measurement input 50 50
Recurring basis | Level 3 | Option model | Measurement Input, Buyback probability [Member] | Maximum    
Liabilities    
Short-term borrowings, measurement input 100 100
Recurring basis | Level 3 | Option model | Measurement Input, Buyback probability [Member] | Weighted average    
Liabilities    
Short-term borrowings, measurement input 72 66
Recurring basis | Level 3 | Option model | Measurement Input, Correlation [Member] | Minimum    
Liabilities    
Short-term borrowings, measurement input (50) (50)
Recurring basis | Level 3 | Option model | Measurement Input, Correlation [Member] | Maximum    
Liabilities    
Short-term borrowings, measurement input 100 100
Recurring basis | Level 3 | Option model | Measurement Input, Correlation [Member] | Weighted average    
Liabilities    
Short-term borrowings, measurement input 70 56
Recurring basis | Level 3 | Option model | Measurement Input, Fund gap risk [Member] | Minimum    
Liabilities    
Short-term borrowings, measurement input 0 0
Recurring basis | Level 3 | Option model | Measurement Input, Fund gap risk [Member] | Maximum    
Liabilities    
Short-term borrowings, measurement input 3 2
Recurring basis | Level 3 | Option model | Measurement Input, Fund gap risk [Member] | Weighted average    
Liabilities    
Short-term borrowings, measurement input 1 0
Recurring basis | Level 3 | Option model | Measurement Input, Gap risk [Member] | Minimum    
Liabilities    
Short-term borrowings, measurement input 0  
Recurring basis | Level 3 | Option model | Measurement Input, Gap risk [Member] | Maximum    
Liabilities    
Short-term borrowings, measurement input 3  
Recurring basis | Level 3 | Option model | Measurement Input, Gap risk [Member] | Weighted average    
Liabilities    
Short-term borrowings, measurement input 1  
Recurring basis | Level 3 | Option model | Measurement Input, Volatility [Member] | Minimum    
Liabilities    
Short-term borrowings, measurement input 0 3
Recurring basis | Level 3 | Option model | Measurement Input, Volatility [Member] | Maximum    
Liabilities    
Short-term borrowings, measurement input 163 158
Recurring basis | Level 3 | Option model | Measurement Input, Volatility [Member] | Weighted average    
Liabilities    
Short-term borrowings, measurement input 16 30
Recurring basis | Level 3 | Option model | Measurement Input, Unadjusted NAV [Member] | Minimum    
Liabilities    
Short-term borrowings, measurement input 101  
Recurring basis | Level 3 | Option model | Measurement Input, Unadjusted NAV [Member] | Maximum    
Liabilities    
Short-term borrowings, measurement input 440  
Recurring basis | Level 3 | Option model | Measurement Input, Unadjusted NAV [Member] | Weighted average    
Liabilities    
Short-term borrowings, measurement input 358  
Recurring basis | Level 3 | Valuation Technique, Discounted Cash Flow [Member]    
Liabilities    
Short-term borrowings SFr 24 SFr 58
Recurring basis | Level 3 | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Minimum    
Liabilities    
Short-term borrowings, measurement input 0 (4)
Recurring basis | Level 3 | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Maximum    
Liabilities    
Short-term borrowings, measurement input 181 992
Recurring basis | Level 3 | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Weighted average    
Liabilities    
Short-term borrowings, measurement input 51 722
Recurring basis | Level 3 | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Minimum    
Liabilities    
Short-term borrowings, measurement input   35
Recurring basis | Level 3 | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Maximum    
Liabilities    
Short-term borrowings, measurement input   40
Recurring basis | Level 3 | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Weighted average    
Liabilities    
Short-term borrowings, measurement input   39
Recurring basis | Level 3 | Price    
Liabilities    
Short-term borrowings SFr 73  
Recurring basis | Level 3 | Price | Measurement Input, Price in percent [Member] | Minimum    
Liabilities    
Short-term borrowings, measurement input 34  
Recurring basis | Level 3 | Price | Measurement Input, Price in percent [Member] | Maximum    
Liabilities    
Short-term borrowings, measurement input 120  
Recurring basis | Level 3 | Price | Measurement Input, Price in percent [Member] | Weighted average    
Liabilities    
Short-term borrowings, measurement input 94  
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years    
Liabilities    
Long-term debt SFr 1,464 SFr 1,133
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model    
Liabilities    
Long-term debt   SFr 1,051
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Buyback probability [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 50 50
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Buyback probability [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 100 100
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Buyback probability [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 72 66
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Correlation [Member] | Minimum    
Liabilities    
Long-term debt, measurement input (50) (50)
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Correlation [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 100 100
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Correlation [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 69 55
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Fund gap risk [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 0 0
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Fund gap risk [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 3 2
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Fund gap risk [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 1 0
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Gap risk [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 0 0
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Gap risk [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 3 4
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Gap risk [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 1 1
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Volatility [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 0 0
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Volatility [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 163 158
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Volatility [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 16 24
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Unadjusted NAV [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 101  
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Unadjusted NAV [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 440  
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Option model | Measurement Input, Unadjusted NAV [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 358  
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Valuation Technique, Discounted Cash Flow [Member]    
Liabilities    
Long-term debt   SFr 48
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Minimum    
Liabilities    
Long-term debt, measurement input   35
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Maximum    
Liabilities    
Long-term debt, measurement input   189
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input   52
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Minimum    
Liabilities    
Long-term debt, measurement input   25
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Maximum    
Liabilities    
Long-term debt, measurement input   25
Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input   25
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years    
Liabilities    
Long-term debt SFr 6,318 SFr 5,526
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model    
Liabilities    
Long-term debt SFr 5,813 SFr 3,961
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Buyback probability [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 50 50
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Buyback probability [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 100 100
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Buyback probability [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 72 66
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Credit Spread [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 3  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Credit Spread [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 92  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Credit Spread [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 75  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Correlation [Member] | Minimum    
Liabilities    
Long-term debt, measurement input (50) (50)
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Correlation [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 100 100
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Correlation [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 75 55
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Fund gap risk [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 0  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Fund gap risk [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 3  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Fund gap risk [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 1  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Gap risk [Member] | Minimum    
Liabilities    
Long-term debt, measurement input   0
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Gap risk [Member] | Maximum    
Liabilities    
Long-term debt, measurement input   2
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Gap risk [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input   0
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Mean reversion [Member] | Minimum    
Liabilities    
Long-term debt, measurement input   (10)
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Mean reversion [Member] | Maximum    
Liabilities    
Long-term debt, measurement input   0
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Mean reversion [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input   (5)
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Volatility [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 0 0
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Volatility [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 163 158
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Volatility [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 19 21
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Unadjusted NAV [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 101  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Unadjusted NAV [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 440  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Option model | Measurement Input, Unadjusted NAV [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 358  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member]    
Liabilities    
Long-term debt   SFr 1,380
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Consolidation, Eliminations [Member]    
Liabilities    
Long-term debt SFr 474  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Minimum    
Liabilities    
Long-term debt, measurement input   (14)
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Maximum    
Liabilities    
Long-term debt, measurement input   481
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input   58
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Consolidation, Eliminations [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 8  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Consolidation, Eliminations [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 702  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Consolidation, Eliminations [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 72  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Minimum    
Liabilities    
Long-term debt, measurement input   23
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Maximum    
Liabilities    
Long-term debt, measurement input   40
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input   38
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Price    
Liabilities    
Long-term debt SFr 9  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Price | Measurement Input, Price in percent [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 26  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Price | Measurement Input, Price in percent [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 26  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Price | Measurement Input, Price in percent [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 26  
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Market comparable    
Liabilities    
Long-term debt   SFr 9
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Market comparable | Measurement Input, Price Volatility [Member] | Minimum    
Liabilities    
Long-term debt, measurement input   27
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Market comparable | Measurement Input, Price Volatility [Member] | Maximum    
Liabilities    
Long-term debt, measurement input   46
Recurring basis | Level 3 | Long-term debt - of which structured notes over two years | Market comparable | Measurement Input, Price Volatility [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input   27
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years    
Liabilities    
Long-term debt SFr 1,854  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model    
Liabilities    
Long-term debt SFr 382  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model | Measurement Input, Buyback probability [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 50  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model | Measurement Input, Buyback probability [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 100  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model | Measurement Input, Buyback probability [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 72  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model | Measurement Input, Correlation [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 16  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model | Measurement Input, Correlation [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 30  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model | Measurement Input, Correlation [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 24  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model | Measurement Input, Price Volatility [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 9  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model | Measurement Input, Price Volatility [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 9  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Option model | Measurement Input, Price Volatility [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 9  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Price    
Liabilities    
Long-term debt SFr 1,472  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Price | Measurement Input, Price Volatility [Member] | Minimum    
Liabilities    
Long-term debt, measurement input 9  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Price | Measurement Input, Price Volatility [Member] | Maximum    
Liabilities    
Long-term debt, measurement input 35  
Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years | Price | Measurement Input, Price Volatility [Member] | Weighted average    
Liabilities    
Long-term debt, measurement input 9  
Recurring basis | Level 3 | Long-term debt - of which high-trigger instruments    
Liabilities    
Long-term debt SFr 0 SFr 0
Recurring basis | Level 3 | Debt securities    
Liabilities    
Trading liabilities 3  
Recurring basis | Level 3 | Debt securities | Debt securities issued by foreign governments    
Liabilities    
Trading liabilities 0  
Recurring basis | Level 3 | Debt securities | Corporate debt securities    
Liabilities    
Trading liabilities 3  
Recurring basis | Level 3 | Equity securities    
Liabilities    
Trading liabilities 22 55
Recurring basis | Level 3 | Short positions    
Liabilities    
Trading liabilities 25  
Recurring basis | Level 3 | Derivative instruments    
Liabilities    
Trading liabilities 2,784 4,191
Recurring basis | Level 3 | Derivative instruments | Interest rate derivatives    
Liabilities    
Trading liabilities 26 169
Recurring basis | Level 3 | Derivative instruments | Foreign exchange derivatives    
Liabilities    
Trading liabilities 57 72
Recurring basis | Level 3 | Derivative instruments | Credit derivatives    
Liabilities    
Trading liabilities   1,335
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Option model    
Liabilities    
Trading liabilities   SFr 12
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Option model | Measurement Input, Credit Spread [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   13
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Option model | Measurement Input, Credit Spread [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   865
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Option model | Measurement Input, Credit Spread [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   250
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Option model | Measurement Input, Correlation [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   49
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Option model | Measurement Input, Correlation [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   50
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Option model | Measurement Input, Correlation [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   50
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member]    
Liabilities    
Trading liabilities   SFr 738
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   0
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   1,468
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Credit Spread [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   391
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Correlation [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   37
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Correlation [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   45
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Correlation [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   44
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Default Rate [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   0
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Default Rate [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   7
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Default Rate [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   3
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Discount Rate [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   6
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Discount Rate [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   19
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Discount Rate [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   14
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Funding spread [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   55
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Funding spread [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   183
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Funding spread [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   120
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Loss Severity [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   0
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Loss Severity [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   100
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Loss Severity [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   68
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Prepayment Rate [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   0
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Prepayment Rate [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   9
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Prepayment Rate [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   7
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   12
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   81
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Valuation Technique, Discounted Cash Flow [Member] | Measurement Input, Recovery rate [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   38
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Market comparable    
Liabilities    
Trading liabilities   SFr 520
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Market comparable | Measurement Input, Price Volatility [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input   84
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Market comparable | Measurement Input, Price Volatility [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input   116
Recurring basis | Level 3 | Derivative instruments | Credit derivatives | Market comparable | Measurement Input, Price Volatility [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input   99
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products    
Liabilities    
Trading liabilities 1,787 SFr 2,010
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model    
Liabilities    
Trading liabilities SFr 1,696  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Buyback probability [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input 50 50
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Buyback probability [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input 100 100
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Buyback probability [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input 72 66
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Correlation [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input (50) (50)
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Correlation [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input 100 100
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Correlation [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input 67 58
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Volatility [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input (1) (2)
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Volatility [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input 163 158
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Volatility [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input 17 27
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Unadjusted NAV [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input 101  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Unadjusted NAV [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input 440  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Unadjusted NAV [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input 358  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Dividend yield [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input 0  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Dividend yield [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input 7  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Option model | Measurement Input, Dividend yield [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input 4  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Price    
Liabilities    
Trading liabilities SFr 63  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Vendor price | Measurement Input, Price Volatility [Member] | Minimum    
Liabilities    
Trading liabilities, measurement input 0  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Vendor price | Measurement Input, Price Volatility [Member] | Maximum    
Liabilities    
Trading liabilities, measurement input 849  
Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products | Vendor price | Measurement Input, Price Volatility [Member] | Weighted average    
Liabilities    
Trading liabilities, measurement input 2  
Nonrecurring basis    
Liabilities    
Other liabilities SFr 21 SFr 14
Other liabilities of which commitments held-for-sale 21 14
Total liabilities at fair value 21 14
Nonrecurring basis | Level 3    
Liabilities    
Other liabilities 21 14
Other liabilities of which commitments held-for-sale 21 14
Total liabilities at fair value SFr 21 SFr 14
Nonrecurring basis | Level 3 | Other liabilities - of which failed sales | Market comparable | Measurement Input, Price Volatility [Member] | Minimum    
Liabilities    
Other Liabilities, commitments held-for-sale, measurement input 80 83
Nonrecurring basis | Level 3 | Other liabilities - of which failed sales | Market comparable | Measurement Input, Price Volatility [Member] | Maximum    
Liabilities    
Other Liabilities, commitments held-for-sale, measurement input 97 98
Nonrecurring basis | Level 3 | Other liabilities - of which failed sales | Market comparable | Measurement Input, Price Volatility [Member] | Weighted average    
Liabilities    
Other Liabilities, commitments held-for-sale, measurement input 83 89
Bank    
Liabilities    
Due to banks SFr 477 SFr 413
Customer deposits 3,700 4,343
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions 13,307 13,688
Obligation to return securities received as collateral 15,017 50,773
Trading liabilities 27,539 45,871
Short-term borrowings 10,690 10,740
Long-term debt 67,788 70,243
Other liabilities 2,568 7,756
Bank | Recurring basis    
Liabilities    
Due to banks 477 413
Customer deposits 3,700 4,343
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions 13,307 13,688
Obligation to return securities received as collateral 15,017 50,773
Trading liabilities 27,539 45,871
Short-term borrowings 10,690 10,740
Long-term debt 67,788 70,243
Other liabilities 2,568 7,756
Total liabilities at fair value 141,086 203,827
Bank | Recurring basis | Long-term debt - of which structured notes over one year and up to two years    
Liabilities    
Long-term debt 12,500 12,920
Bank | Recurring basis | Long-term debt - of which structured notes over two years    
Liabilities    
Long-term debt 30,486 33,856
Bank | Recurring basis | Long-term debt - of which other debt instruments over two years    
Liabilities    
Long-term debt 5,077  
Bank | Recurring basis | Long-term debt - of which high-trigger instruments    
Liabilities    
Long-term debt 10,708 10,627
Bank | Recurring basis | Long-term debt - of which other subordinated bonds    
Liabilities    
Long-term debt 7,133  
Bank | Recurring basis | Debt securities    
Liabilities    
Trading liabilities 7,677  
Bank | Recurring basis | Debt securities | Debt securities issued by foreign governments    
Liabilities    
Trading liabilities 3,635  
Bank | Recurring basis | Debt securities | Corporate debt securities    
Liabilities    
Trading liabilities 3,955  
Bank | Recurring basis | Equity securities    
Liabilities    
Trading liabilities 9,016 20,694
Bank | Recurring basis | Short positions    
Liabilities    
Trading liabilities 16,693  
Bank | Recurring basis | Derivative instruments    
Liabilities    
Trading liabilities 10,846 17,745
Bank | Recurring basis | Level 3    
Liabilities    
Due to banks 0 0
Customer deposits 394 448
Central bank funds purchased, securities sold under repurchase agreements and securities lending transactions 0 0
Obligation to return securities received as collateral 14 101
Trading liabilities 2,809 4,246
Short-term borrowings 1,032 701
Long-term debt 9,676 7,286
Other liabilities 517 1,250
Total liabilities at fair value 14,442 14,032
Bank | Recurring basis | Level 3 | Long-term debt - of which structured notes over one year and up to two years    
Liabilities    
Long-term debt 1,464 1,133
Bank | Recurring basis | Level 3 | Long-term debt - of which structured notes over two years    
Liabilities    
Long-term debt 6,318 5,526
Bank | Recurring basis | Level 3 | Long-term debt - of which other debt instruments over two years    
Liabilities    
Long-term debt 1,854  
Bank | Recurring basis | Level 3 | Long-term debt - of which high-trigger instruments    
Liabilities    
Long-term debt 0 0
Bank | Recurring basis | Level 3 | Long-term debt - of which other subordinated bonds    
Liabilities    
Long-term debt 0  
Bank | Recurring basis | Level 3 | Debt securities    
Liabilities    
Trading liabilities 3  
Bank | Recurring basis | Level 3 | Debt securities | Debt securities issued by foreign governments    
Liabilities    
Trading liabilities 0  
Bank | Recurring basis | Level 3 | Debt securities | Corporate debt securities    
Liabilities    
Trading liabilities 3  
Bank | Recurring basis | Level 3 | Equity securities    
Liabilities    
Trading liabilities 22 55
Bank | Recurring basis | Level 3 | Short positions    
Liabilities    
Trading liabilities 25  
Bank | Recurring basis | Level 3 | Derivative instruments    
Liabilities    
Trading liabilities 2,784 4,191
Bank | Recurring basis | Level 3 | Derivative instruments | Interest rate derivatives    
Liabilities    
Trading liabilities 26 169
Bank | Recurring basis | Level 3 | Derivative instruments | Foreign exchange derivatives    
Liabilities    
Trading liabilities 57 72
Bank | Recurring basis | Level 3 | Derivative instruments | Credit derivatives    
Liabilities    
Trading liabilities   1,335
Bank | Recurring basis | Level 3 | Derivative instruments | Equity/Index-related products    
Liabilities    
Trading liabilities 1,787 2,010
Bank | Nonrecurring basis    
Liabilities    
Other liabilities 21 14
Other liabilities of which commitments held-for-sale 21 14
Total liabilities at fair value 21 14
Bank | Nonrecurring basis | Level 3    
Liabilities    
Other liabilities 21 14
Other liabilities of which commitments held-for-sale 21 14
Total liabilities at fair value SFr 21 SFr 14