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Commitments and Contingencies (Details) $ in Millions	1 Months Ended			9 Months Ended	15 Months Ended
	Jul. 31, 2025 USD ($)	Apr. 30, 2025 USD ($)	Aug. 31, 2022 USD ($)	Sep. 30, 2025 USD ($) lease state	Sep. 30, 2025 claim state lease
Commitments and Contingencies Disclosure [Abstract]
Guarantor obligations, number of leases | lease				60	60
Settlement Framework
Loss Contingencies [Line Items]
Number of states that elected to join the settlement | state				45	45
Number of states under separate settlement agreements | state				4	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
Penalties awarded	$ 542
U.S. ex rel. Bassan et al. v. Omnicare, Inc. and CVS Health Corp. | Omnicare, Inc and CVS Health Corporation
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
United States Ex Rel. Behnke v. CVS Caremark Corporation, Et Al.
Loss Contingencies [Line Items]
Damages awarded				$ 291

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