Tax - Balance sheet related (Details 2)
SFr in Millions
 12 Months Ended
Dec. 31, 2021
CHF (SFr)
Dec. 31, 2020
CHF (SFr)
Dec. 31, 2019
CHF (SFr)
Tax effect of temporary differences      
Compensation and benefits SFr 844 SFr 931  
Loans 485 653  
Investment securities 1,257 1,347  
Provisions 1,358 999  
Leasing 367 384  
Derivatives 58 53  
Real estate 258 175  
Net operating loss carry-forwards 7,120 5,425  
Net operating loss carry-forwards, after allocation of valuation allowances 881 1,070  
Goodwill and intangible assets 135 209  
Other 171 119  
Gross deferred tax assets before valuation allowance 12,053 10,295  
Less valuation allowance (6,072) (4,465) SFr (4,136)
Gross deferred tax assets net of valuation allowance 5,981 5,830  
Compensation and benefits (973) (666)  
Loans (305) (352)  
Investment securities (722) (523)  
Provisions (298) (333)  
Derivatives (218) (231)  
Leasing (358) (365)  
Real estate (46) (36)  
Other (108) (187)  
Gross deferred tax liabilities (3,028) (2,693)  
Net deferred tax assets 2,953 3,137  
Net deferred tax assets change (184)    
Net operating loss carry-forwards      
Due to expire within 1 year 70    
Due to expire within 2 to 5 years 4,782    
Due to expire within 6 to 10 years 9,092    
Due to expire within 11 to 20 years 6,154    
Amount due to expire 20,098    
Amount not due to expire 19,038    
Total net operating loss carry-forwards 39,136    
Movements in the valuation allowance      
Balance at beginning of period 4,465 4,136 4,021
Net changes 1,607 329 115
Balance at end of period 6,072 4,465 4,136
Tax benefits associated with share-based compensation      
Tax benefits recorded in the consolidated statements of operations 234 264 263
Movements in gross unrecognized tax benefits      
Balance at beginning of period 382 595 574
Increases in unrecognized tax benefits as a result of tax positions taken during a prior period 23 14 27
Decreases in unrecognized tax benefits as a result of tax positions taken during a prior period (35) (249) (64)
Increases in unrecognized tax benefits as a result of tax positions taken during the current period 54 90 105
Decreases in unrecognized tax benefits relating to settlements with tax authorities 0 (3) 0
Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (6) (17) (35)
Other (including foreign currency translation) 7 (48) (12)
Balance at end of period 425 382 595
of which, if recognized, would affect the effective tax rate 425 382 595
Interest and penalties      
Interest and penalties recognized in the consolidated statements of operations, Recoveries 3 (16) (10)
Interest and penalties recognized in the consolidated balance sheets 64 61 77
US      
Tax effect of temporary differences      
Less valuation allowance 0    
Net deferred tax assets 3,089 3,040  
Movements in the valuation allowance      
Balance at end of period SFr 0    
Net operating loss carryforward period as per US tax law (in years) 20    
Bank      
Tax effect of temporary differences      
Compensation and benefits SFr 832 916  
Loans 319 342  
Investment securities 1,257 1,347  
Provisions 1,357 999  
Leasing 228 254  
Derivatives 46 51  
Real estate 250 168  
Net operating loss carry-forwards 6,382 5,278  
Net operating loss carry-forwards, after allocation of valuation allowances 877 1,064  
Goodwill and intangible assets 135 209  
Other 151 107  
Gross deferred tax assets before valuation allowance 10,957 9,671  
Less valuation allowance (5,338) (4,323) (4,067)
Gross deferred tax assets net of valuation allowance 5,619 5,348  
Compensation and benefits (355) (304)  
Loans (131) (60)  
Investment securities (722) (523)  
Provisions (297) (332)  
Derivatives (218) (211)  
Leasing (216) (233)  
Real estate (38) (36)  
Other (98) (176)  
Gross deferred tax liabilities (2,075) (1,875)  
Net deferred tax assets 3,544 3,473  
Net deferred tax assets change 71    
Net operating loss carry-forwards      
Due to expire within 1 year 70    
Due to expire within 2 to 5 years 4,085    
Due to expire within 6 to 10 years 5,150    
Due to expire within 11 to 20 years 6,154    
Amount due to expire 15,459    
Amount not due to expire 19,025    
Total net operating loss carry-forwards 34,484    
Movements in the valuation allowance      
Balance at beginning of period 4,323 4,067 3,957
Net changes 1,015 256 110
Balance at end of period 5,338 4,323 4,067
Tax benefits associated with share-based compensation      
Tax benefits recorded in the consolidated statements of operations 227 252 256
Movements in gross unrecognized tax benefits      
Balance at beginning of period 382 595 574
Increases in unrecognized tax benefits as a result of tax positions taken during a prior period 23 14 27
Decreases in unrecognized tax benefits as a result of tax positions taken during a prior period (35) (249) (64)
Increases in unrecognized tax benefits as a result of tax positions taken during the current period 54 90 105
Decreases in unrecognized tax benefits relating to settlements with tax authorities 0 (3) 0
Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (6) (17) (35)
Other (including foreign currency translation) 7 (48) (12)
Balance at end of period 425 382 595
of which, if recognized, would affect the effective tax rate 425 382 595
Interest and penalties      
Interest and penalties recognized in the consolidated statements of operations, Recoveries 3 (16) (10)
Interest and penalties recognized in the consolidated balance sheets 64 61 SFr 77
Bank | US      
Tax effect of temporary differences      
Less valuation allowance 0 0  
Net deferred tax assets 3,089 3,040  
Movements in the valuation allowance      
Balance at beginning of period 0    
Balance at end of period SFr 0 SFr 0