Represents compensatory damages sought from the reporting entity in a lawsuit.

No definition available.

Name:	cvs_CompensatoryDamagesSoughtInLawsuits
Namespace Prefix:	cvs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Fine Paid by the Company for the Settlement with the U.S. Attorney's Office for the Middle District of Florida, resolving alleged violations of the Controlled Substances Act.

+ References

No definition available.

+ Details

Name:	cvs_FinePaidbytheCompanyfortheSettlementwiththeU.S.AttorneysOfficefortheMiddleDistrictofFlorida
Namespace Prefix:	cvs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the number of store leases guaranteed by the reporting entity.

+ References

No definition available.

+ Details

Name:	cvs_GuaranteedStoreLeases
Namespace Prefix:	cvs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of competitors against whom putative class action has been filed by independent pharmacies.

+ References

No definition available.

+ Details

Name:	cvs_NumberOfCompetitorsAgainstWhomPutativeActionsAreFiled
Namespace Prefix:	cvs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of independent pharmacies which have filed putative class action against the reporting entity.

+ References

No definition available.

+ Details

Name:	cvs_NumberOfPharmaciesFilingPutativeAction
Namespace Prefix:	cvs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of states participating in multi-state investigation under Federal Trade Commission Act.

+ References

No definition available.

+ Details

Name:	cvs_NumberOfStatesParticipatingInMultistateInvestigations
Namespace Prefix:	cvs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Year the Last Lease Expires

+ References

No definition available.

+ Details

Name:	cvs_YeartheLastLeaseExpires
Namespace Prefix:	cvs_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of defendants named in a legal action.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingencyNumberOfDefendants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=cvs_LaurielloLawsuitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=cvs_MultiStateInvestigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingencies (Details) $ in Millions	1 Months Ended		6 Months Ended
Commitments and Contingencies (Details) $ in Millions	Mar. 31, 2010 state	Oct. 31, 2003 competitor entity pharmacy	Jun. 30, 2015 USD ($) store_lease	May. 13, 2015 USD ($)
Loss contingencies
Number of store leases guaranteed \| store_lease			72
Year the Last Lease Expires			2026
Number of pharmacies filing putative action \| pharmacy		2
Number of competitors against whom putative actions are filed \| competitor		2
Number of Caremark entities named as defendants \| entity		2
Number of stores Drug Enforcement Agency revoked licenses in October 2012				$ 22
Lauriello Lawsuit
Loss contingencies
Lauriello lawsuit, amount sought in compensatory damages plus other non-specified damages			$ 3,200
Multi-state investigation under FTC
Loss contingencies
Number of states participating in multi-state investigation \| state	28