v3.25.0.1
Stock Incentive Plans - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
May 02, 2023
Mar. 29, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Shares of common stock received for each restricted stock unit granted (in shares)     1    
Shares issued employee stock purchase plan (in shares)     4,000,000    
Average purchase price of shares purchased (in dollars per share)     $ 58.57    
Restricted stock units and performance stock units          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Compensation not yet recognized, other than options     $ 829    
Compensation not yet recognized, period for recognition     2 years 2 months 12 days    
Vested in period, fair value     $ 497 $ 525 $ 328
Performance stock units          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Award vesting period     3 years    
Employee Stock Option          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Award vesting period     4 years    
Stock options granted through 2018          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Expiration period     7 years    
Stock options granted subsequent to 2018          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Expiration period     10 years    
SARs          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Award vesting period     4 years    
Expiration period     10 years    
Stock options and SARs          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Compensation not yet recognized, period for recognition     2 years 2 months 26 days    
Compensation not yet recognized, options     $ 44    
Expected to vest (in shares)     7,000,000    
Employee Stock          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Number of shares authorized (in shares)     60,000,000    
Number of shares available for grant (in shares)     23,000,000    
Offering period     6 months    
Purchase price of common stock percent     90.00%    
Minimum          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Award vesting period     3 years    
Maximum          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Award vesting period     5 years    
Oak Street Health Inc. | Pre-combination services          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Replacement equity awards for pre-combination services (in shares) 3,900,000        
Signify Health, Inc. | Pre-combination services          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Replacement equity awards for pre-combination services (in shares)   3,200,000      
CVS Health 2017 Incentive Compensation Plan          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Number of shares authorized (in shares)     92,000,000    
Number of shares available for grant (in shares)     33,000,000    
Oak Street Health Plan          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Number of shares authorized (in shares)       7,000,000  
Signify Plan          
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]          
Number of shares authorized (in shares)       9,000,000