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Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2020
Feb. 08, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2020    
Document Transition Report false    
Entity File Number 001-01011    
Entity Registrant Name CVS HEALTH CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 05-0494040    
Entity Address, Address Line One One CVS Drive,    
Entity Address, City or Town Woonsocket,    
Entity Address, State or Province RI    
Entity Address, Postal Zip Code 02895    
City Area Code (401)    
Local Phone Number 765-1500    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol CVS    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 84,719,366,378
Entity Common Stock, Shares Outstanding   1,311,354,926  
Documents Incorporated by Reference
The following materials are incorporated by reference into this Form 10-K:
Information contained in the definitive proxy statement for CVS Health Corporation’s 2021 Annual Meeting of Stockholders, to be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year ended December 31, 2020 (the “Proxy Statement”), is incorporated by reference in Parts III and IV to the extent described therein.
    
Entity Central Index Key 0000064803    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Amendment Flag false