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Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2011
Feb. 10, 2012
Jun. 30, 2011
Document and Entity Information      
Entity Registrant Name CVS CAREMARK CORP    
Entity Central Index Key 0000064803    
Document Type 10-K    
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 Public Float     $ 50,513,379,248
Entity Common Stock, Shares Outstanding   1,302,378,570  
Document Fiscal Year Focus 2011    
Document Fiscal Period Focus FY