Document and Entity Information	12 Months Ended
	Dec. 31, 2011
Document and Entity Information
Entity Registrant Name	CREDIT SUISSE GROUP AG
Entity Central Index Key	0001159510
Document Type	20-F
Document Period End Date	Dec. 31, 2011
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	1,220,322,988
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY