Document and Entity Information
 12 Months Ended
Dec. 31, 2021
shares
Entity Information [Line Items]  
Document Type 20-F
Document Annual Report true
Document Period End Date Dec. 31, 2021
Document Transition Report false
Document Shell Company Report false
Document Registration Statement false
Document Accounting Standard U.S. GAAP
Entity File Number 001-15244
Entity Registrant Name Credit Suisse Group AG
Entity Incorporation, State or Country Code V8
Entity Address, Address Line One Paradeplatz 8
Entity Address, City or Town Zurich
Entity Address, Postal Zip Code 8001
Entity Address, Country CH
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 2,569,684,509
Entity Central Index Key 0001159510
Amendment Flag false
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2021
Document Fiscal Period Focus FY
ICFR Auditor Attestation Flag true
Auditor Name PricewaterhouseCoopers AG
Auditor Location Zurich, Switzerland
Auditor Firm ID 1358
Business Contact [Member]  
Entity Information [Line Items]  
Contact Personnel Name David R. Mathers
Entity Address, Address Line One Paradeplatz 8
Entity Address, City or Town Zurich
Entity Address, Postal Zip Code 8001
Entity Address, Country CH
City Area Code +41 44
Local Phone Number 333 1111
American Depositary Shares each representing one Share [Member]  
Entity Information [Line Items]  
Title of 12(b) Security American Depositary Shares each representing one Share
Trading Symbol CS
Security Exchange Name NYSE
Bank  
Entity Information [Line Items]  
Document Type 20-F
Document Annual Report true
Document Period End Date Dec. 31, 2021
Document Transition Report false
Document Shell Company Report false
Document Registration Statement false
Document Accounting Standard U.S. GAAP
Entity File Number 001-33434
Entity Registrant Name Credit Suisse AG
Entity Incorporation, State or Country Code V8
Entity Address, Address Line One Paradeplatz 8
Entity Address, City or Town Zurich
Entity Address, Postal Zip Code 8001
Entity Address, Country CH
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 4,399,680,200
Entity Central Index Key 0001053092
Amendment Flag false
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2021
Document Fiscal Period Focus FY
ICFR Auditor Attestation Flag true
Auditor Name PricewaterhouseCoopers AG
Auditor Location Zurich, Switzerland
Auditor Firm ID 1358
Bank | Business Contact [Member]  
Entity Information [Line Items]  
Contact Personnel Name David R. Mathers
Entity Address, Address Line One Paradeplatz 8
Entity Address, City or Town Zurich
Entity Address, Postal Zip Code 8001
Entity Address, Country CH
City Area Code +41 44
Local Phone Number 333 1111
Bank | Credit Suisse FI Large Cap Growth Enhanced ETNs due June 13, 2024 [Member]  
Entity Information [Line Items]  
Title of 12(b) Security Credit Suisse FI Large Cap Growth Enhanced ETNs due June 13, 2024 Linked to the Russell 1000® Growth Index Total Return
Trading Symbol FLGE
Security Exchange Name NYSEArca
Bank | Credit Suisse X-Links Gold Shares Covered Call ETNs due February 2, 2033 [Member]  
Entity Information [Line Items]  
Title of 12(b) Security Credit Suisse X-Links® Gold Shares Covered Call ETNs due February 2, 2033
Trading Symbol GLDI
Security Exchange Name NASDAQ
Bank | Credit Suisse X-Links Silver Shares Covered Call ETNs due April 21, 2033 [Member]  
Entity Information [Line Items]  
Title of 12(b) Security Credit Suisse X-Links® Silver Shares Covered Call ETNs due April 21, 2033
Trading Symbol SLVO
Security Exchange Name NASDAQ
Bank | Credit Suisse S&P MLP Index ETNs due December 4, 2034 [Member]  
Entity Information [Line Items]  
Title of 12(b) Security Credit Suisse S&P MLP Index ETNs due December 4, 2034 Linked to the S&P MLP Index
Trading Symbol MLPO
Security Exchange Name NYSEArca
Bank | Credit Suisse X-Links Monthly Pay 2xLeveraged Mortgage REIT ETNs due July 11, 2036 [Member]  
Entity Information [Line Items]  
Title of 12(b) Security Credit Suisse X-Links® Monthly Pay 2xLeveraged Mortgage REIT ETNs due July 11, 2036
Trading Symbol REML
Security Exchange Name NYSEArca
Bank | Credit Suisse X-Links Crude Oil Shares Covered Call ETNs due April 24, 2037 [Member]  
Entity Information [Line Items]  
Title of 12(b) Security Credit Suisse X-Links® Crude Oil Shares Covered Call ETNs due April 24, 2037
Trading Symbol USOI
Security Exchange Name NASDAQ
Bank | Credit Suisse FI Enhanced Europe 50 ETNs due May 11, 2028 [Member]  
Entity Information [Line Items]  
Title of 12(b) Security Credit Suisse FI Enhanced Europe 50 ETNs due May 11, 2028 Linked to the STOXX® Europe 50 USD (Gross Return) Index
Trading Symbol FEUL
Security Exchange Name NYSEArca