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Commitments and Contingencies (Details)
$ in Millions
 1 Months Ended 12 Months Ended
Jul. 31, 2025
USD ($)
Apr. 30, 2025
USD ($)
Aug. 31, 2022
USD ($)
Jun. 30, 2025
state
claim
lease
Commitments and Contingencies Disclosure [Abstract]        
Guarantor obligations, number of leases | lease       60
Settlement Framework        
Loss Contingencies [Line Items]        
Number of states that elected to join the settlement | state       45
Number of states under separate settlement agreements | state       4
Federal Court in Ohio Judgment | Pending Litigation        
Loss Contingencies [Line Items]        
Legal settlement awarded to other party     $ 651  
Legal settlement, period of payment     15 years  
U.S. ex rel. Bassan et al. v. Omnicare, Inc. and CVS Health Corp. | Omnicare, Inc.        
Loss Contingencies [Line Items]        
Damages awarded   $ 136    
Damages awarded per statute   $ 407    
U.S. ex rel. Bassan et al. v. Omnicare, Inc. and CVS Health Corp. | Omnicare, Inc. | Subsequent Event        
Loss Contingencies [Line Items]        
Penalties awarded $ 542      
U.S. ex rel. Bassan et al. v. Omnicare, Inc. and CVS Health Corp. | Omnicare, Inc and CVS Health Corporation | Subsequent Event        
Loss Contingencies [Line Items]        
Penalties awarded $ 165      
Stockholder Matters, Class Action Complaints        
Loss Contingencies [Line Items]        
Number of claims filed | claim       2
In re CVS Health Corporation Derivative Litigation        
Loss Contingencies [Line Items]        
Number of claims filed | claim       2
In re CVS Health Corporation Stockholder Derivative Litigation        
Loss Contingencies [Line Items]        
Number of claims filed | claim       2
In re CVS Health Corporation Stockholder Derivative Litigation and Davidow v. Lynch, et al.        
Loss Contingencies [Line Items]        
Number of claims filed | claim       3